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design of study on optimal conditions of high purity poly ferric chloride in china

  • Study on optimal conditions of poly ferric chloride

    2021-1-1 · Study on optimal conditions of poly ferric chloride (PFC) dosage treating tannery wastewater Author links open overlay panel Thanh Tran a b c Duc Anh Le a b d Nguyen Hong Hai a b c Tran Phi Hung a e Nguyen Cong Danh a e Lam Van Tan a f Vo Thi Dieu Hien e Xuan-Thanh Bui b c g

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  • Optimal design and characterization of sulfide

    2017-2-1 · Optimal design and characterization of sulfide-modified nanoscale zerovalent iron for diclofenac removal ... In this study, sulfidation was adopted to enhance diclofenac (DCF, an emerging groundwater pollutant) removal under aerobic conditions in the presence of common anions. ... 85%), anhydrous ferric chloride (FeCl 3, 99.9%), sodium ...

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  • Feasibility and optimization of wastewater treatment by ...

    2020-11-17 · Regarding the aim of our study, the experiment was divided into two phases. Batch tests were applied to select an optimal chemical coagulant from polyalumin-ium chloride (PAC), polyaluminium ferric chloride (PAFC), poly ferric sulfate (PFS) (individual or couple with poly acrylamide [PAM]) during the first phase. At the second

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  • Comparison of poly ferric chloride and poly titanium ...

    2021-1-28 · The current study investigated the efficiency of poly ferric chloride (PFC) and poly titanium tetrachloride (PTC) in coagulation-flocculation process for treatment of paper and cardboard wastewater. The effect of pH (5–11), coagulant concentrations (100–1000 mg/L), mixing rate (10–60 rpm), mixing time (5–25 min), and settling time (5–30 min) were examined.

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  • Optimal conditions of Al and Fe extraction from

    2021-4-28 · In this study, silver nanowires (AgNWs) were prepared by the polyol method using silver nitrate (AgNO3) as the silver source and polyvinylpyrrolidone (PVP) as the structure-directing agent under different reaction conditions. In order to obtain AgNWs with good uniformity and electrical conductivity, the orthogonal experiment method was adopted to design an experimental scheme.

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  • Characteristic of silver nanowires prepared by polyol ...

    2019-12-1 · Manganese-zinc chloride waste liquor (MZCWL) produced during cobalt smelting is a significant source for the preparation of high-purity manganese sulfate. The key to recover manganese from MZCWL is the separation of Zn(II). Conventional methods for zinc removal are unsatisfactory due to similar physicochemical properties of zinc and manganese.

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  • Removal of Zn(II) from manganese-zinc chloride waste ...

    2020-8-20 · In this study, it was found that the response surface methodology can be used to find the optimal conditions of the system, taking into account the variables affecting the response. Additional tests were performed to make better use of the optimal treatment. 3.2 Properties of fermented extract in optimum conditions 3.2.1 Antimicrobial properties

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  • Gamma‐aminobutyric acid production by

    2020-8-1 · High rate Arsenic (As (V)) removal from contaminated water resources was investigated by simultaneous presence of poly titanium chloride (PTC) and Fe 2 O 3-Mn 2 O 3 nanocomposite in the enhanced coagulation process along with precipitated flocs recirculation. In this study, the synthesis of Fe 2 O 3-Mn 2 O 3 and PTC and their characteristics, the effective parameters in the enhanced ...

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  • Simultaneous presence of poly titanium chloride and

    2021-5-1 · In this study, based on previous research on the separation of acetonitrile or pyridine from water and the various separation methods, AED and APSD are used to separate acetonitrile–pyridine–water ternary mixtures through the optimization and comparison of the two methods to choose the optimal separation scheme. Table 1.

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  • Feasibility and optimization of wastewater treatment by ...

    2020-11-17 · Regarding the aim of our study, the experiment was divided into two phases. Batch tests were applied to select an optimal chemical coagulant from polyalumin-ium chloride (PAC), polyaluminium ferric chloride (PAFC), poly ferric sulfate (PFS) (individual or couple with poly acrylamide [PAM]) during the first phase. At the second

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  • The fern cavitation catapult: mechanism and design ...

    2016-1-1 · In what follows, we present a detailed study of the three stages of spore ejection (§§3.1–3.3) and use this quantitative information to evaluate how optimal the design of the catapult is (Discussion). The details of the models and the refilling dynamics of the …

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  • Study of Esterification Waste water Treatment by

    2018-12-12 · In this study, the Esterification wastewater was treated by three kinds of flocculants (poly aluminum chloride (PAC), polymeric ferric sulfate (PFS), poly aluminum ferric chloride (PAFC)), the influences of flocculent concentration, temperature and pH on …

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  • Evaluation of Ferric Chloride as a Coagulant for Cork ...

    2019-5-25 · The optimal conditions found for the settling process were not the same as those that had been determined in the first part of the study for the elimination of organic matter. Finally, taking into account economic and practical reasons, the Talmadge−Fitch method is used to apply the results to the design of a clarifier−thickener unit to ...

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  • Comprehensive reutilization of iron in iron ore tailings ...

    2020-6-23 · A large number of iron ore tailings (IOTs) are produced in steel industry, posing threat to the environment during its storage and disposal. To effectively reutilize Fe in IOTs, we propose a comprehensive utilization scheme: (1) most Fe in IOTs is extracted by concentrated hydrochloric acid to form FeCl3 flocculants; (2) after separation from the FeCl3 flocculants, a small amount of Fe is ...

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  • Flocculation of a High-Turbidity Kaolin Suspension Using ...

    2019-2-18 · coagulants, such as aluminum sulfate, poly (ferric chloride) and poly (aluminum chloride) [7], which have been used in high-turbidity water purification. However, the application of inorganic coagulants in high-turbidity water treatment is restricted by the excessive amount needed, the uneconomical cost, and residual chemicals [8].

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  • Advances and approaches for chemical recycling of

    2020-4-20 · Optimal reaction conditions were found to be at 425°C for 2–4 hr or 450 °C for 0.5–1 hr, in which case up to 91 wt% of the PP was converted into oil. The composition of the oil was found to be olefins, paraffins, cycloalkanes, and aromatics.

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  • Corrosion inhibition of copper in ferric chloride ...

    2020-11-18 · Ferric chloride (FeCl3) has widespread use as an etchant in the PCB industry and for photochemical machining. Although the corrosion process of copper in …

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  • Optimization of culture conditions for short-term ...

    2018-1-17 · Gonocytes give rise to spermatogonial stem cells, and thereby play an essential role in establishing spermatogenesis. Optimized culture conditions for gonocytes provide an opportunity for their study and in vitro manipulation for potential application in reproductive technologies. Using six experiments in a step-wise design, we examined the effects of several culture conditions on the ...

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  • Dendropanax morbifera Leaf Polyphenolic Compounds:

    2020-2-1 · 2.3. RSM Experimental Design RSM was used to establish the optimum extraction conditions for DMLE. A central composite design was applied based on the results of a preliminary study. The ranges of optimal conditions for each leaf sample were determined with regards to the independent variables (Xn) of the extraction

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  • Dendropanax morbifera Leaf Polyphenolic Compounds:

    2020-2-1 · 2.3. RSM Experimental Design RSM was used to establish the optimum extraction conditions for DMLE. A central composite design was applied based on the results of a preliminary study. The ranges of optimal conditions for each leaf sample were determined with regards to the independent variables (Xn) of the extraction

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  • Improvement of the process of removing phosphorus

    2019-6-1 · At optimal operating conditions of Fe:P (w/w) ratio = 2.40, pH = 6.48 and FMS = 100 rev min − 1, 97.85% removal of phosphorus was achieved. Moreover, compared with the one-off dosage, the three-step process treatment can save 50% of the cost in terms of ferric chloride when treating the same amount of distillery effluent.

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  • Optimization of culture conditions for short-term ...

    2018-1-17 · Gonocytes give rise to spermatogonial stem cells, and thereby play an essential role in establishing spermatogenesis. Optimized culture conditions for gonocytes provide an opportunity for their study and in vitro manipulation for potential application in reproductive technologies. Using six experiments in a step-wise design, we examined the effects of several culture conditions on the ...

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  • Isolation, identification, and fenvalerate-degrading ...

    2021-1-10 · [20] was used to determine the optimal conditions for degrading fenvalerate by strain CY-012. With single fac-tor tests and the Plackett–Burman (PB) experimental design, three selected factors that significantly affected the fenvalerate degradation activity of strain CY-012 were represented at suboptimal (1), optimal (0) and

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  • Progresses in Synthesis of Polycarboxylate

    2020-7-3 · The prerequisite to synthesize PCE was to prepare new macromonomers with controlled molecular mass, adjustable hydrophilic-lipophilic groups, long-chain alkyl groups, and large terminal hydroxyl groups as well. Structural modifications in the molecular scale of polycarboxylate superplasticizer (PCE) would lead to changes in properties of dispersion and water retention as well …

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  • Role of Functional Beverages on Sport Performance

    2018-10-10 · 1. Introduction. Functional foods are defined by the European Commission as “a food product that can only be considered functional if together with the basic nutritional impact it has beneficial effects on one or more function of the human organism thus either improving the general physical conditions or/and decreasing the risk of the evolution of disease” [].

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  • A residue-free approach to water disinfection using ...

    2021-7-1 · Under flow conditions, high (1,000 ppm) and low (5 ppm) chlorine concentrations failed to produce an appreciable reduction in E. coli levels (0.37 log 10 and 0.44 log 10, respectively).

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  • A Study on Ceramsite Production Using Dredging Sea

    Dredging sea mud produced during the coastal infrastructure construction has been gradually becoming an environmental problem in China. Making ceramsite is an attractive way to convert the waste sea mud to resources used for many industrial sectors. However, the imapct of preheating and sintering conditions on the ceramsite properties and the biofilm formation capacity of the ceramsite are ...

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  • Optimization of the spherical integrity for sustained ...

    2020-12-10 · Optimization of spherical integrity by the Taguchi method. Calcium alginate microcarriers were prepared by the Taguchi method (Supplementary …

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  • Study on the Electro-Osmosis Characteristics of Soft

    2020-9-15 · Chemical electro-osmosis with an injected saline solution can be described as an efficient method for adjusting the soil microstructure and improving soil conductivity, and the effect of electro-osmotic consolidation on soft foundations can also be improved by this novel technology in regard to foundation treatment. To better study the electro-osmotic characteristics of soft clay from Taizhou ...

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  • Study of the coagulation process in wastewater

    The optimal conditions were as follows: Coagulant dosage of 871 mg/L, flocculent dosage of 22.3 mg/L and pH 8.35. The study of dairy effluents treatment by EC was carried out using aluminum electrodes. The analysis of the filtrates showed that the COD was reduced to 61% while the removal of phosphorus, nitrogen contents and turbidity were 89 ...

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  • Optimization and economic evaluation of modified ...

    2018-10-17 · Chemicals. Poly-aluminum chloride (Al 2 (OH) n Cl 6−n.YH 2 O, Al 2 O 3 = 30%wt, basicity = 65% and pH = 3) was used as a coagulant and anionic (A 300), cationic (C 270) and nonionic polymers, as the coagulant aids were provided from AquaTech Company, Switzerland.. Preparation of solution. In order to prepare a 10 percent clear solution for coagulant, 10 g of PAC was dissolved to 100 mL of ...

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  • Isolation, identification, and fenvalerate-degrading ...

    2021-1-10 · [20] was used to determine the optimal conditions for degrading fenvalerate by strain CY-012. With single fac-tor tests and the Plackett–Burman (PB) experimental design, three selected factors that significantly affected the fenvalerate degradation activity of strain CY-012 were represented at suboptimal (1), optimal (0) and

    Get Price
  • Yuanyuan Yu, Yongjun Sun * , Jun Zhou, Aowen Chen and ...

    2021-6-23 · were purchased from Sinopharm Chemical Reagent Co., Ltd. (China). Sodium hydroxide (NaOH) is of analytical grade and was purchased from Nanjing Chemical Reagent Co., Ltd. (China). Copper chloride (CuCl2 2H2O) is analytically pure and was purchased from Nanjing Shengjian Quanhua Glass Instrument Co., Ltd. (China). High purity nitrogen

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  • The Impact of Zeta Potential on the Physical

    2006-5-3 · The physical properties of natural organic matter (NOM) flocs, such as size, growth rate, and strength, were investigated using a laser diffraction particle sizing device. Conditions were set such that varying carbon coagulant ratio and zeta potential could both be investigated. Results demonstrated a link between zeta potential and coagulation and flocculation performance, with the production ...

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  • Optimal Extraction of Gallic Acid from Suaeda glauca

    The ultrasound-assisted extraction (UAE) was initially applied to extract gallic acid from Suaeda glauca Bge. using 70% ethanol as extraction solvent. Temperature, liquid-solid ratio, and extraction time were optimized by response surface methodology (RSM), obtaining maximum levels of gallic acid (6.30 mg·g −1 ) at 51°C, 19.52 mL·g−1, and 42.68 min, respectively.

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  • Toward the Design of High‐performance

    He moved to China University of Petroleum (East China) in 2018 and now he is a professor there. His research interests focus on the design and controlled synthesis of carbon nanomaterials such as carbon nanotubes and graphene, and their applications in energy related areas such as supercapacitors, Li ion batteries and full cells.

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  • Microalgae Chlorella vulgaris biomass harvesting by ...

    2018-6-28 · Microalgal biomass harvesting using traditional chemicals is costly for the production of biofuels, hindering the scale-up process of the technology. Thus, the search for a cost-effective microalgal harvesting method is extremely important. Using chitosan as a natural flocculant to harvest microalgal biomass seems to be an efficient and convenient solution.

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  • Conducting Polymers in Sensor Design | IntechOpen

    A single phase high-T c ceramic was obtained by a solid state reaction using predetermined firing conditions, although a transmission electron microscopy (TEM) study showed a small amount of glass ...

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  • Effect of Ferric Carboxymaltose on Exercise Capacity in ...

    The aim of the present EFFECT-HF study (Effect of Ferric Carboxymaltose on Exercise Capacity in Patients ... Study Design The EFFECT-HF study was a prospective randomized con-trolled, multicenter, open-label trial with blinded end-point ... diluted in 100 mL of sterile 0.9% sodium chloride solution

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  • Efficient fermentative production of polymer-grade d ...

    2016-1-12 · Results. In this study, we developed a process for high-optical-purity d-lactate production using an engineered alkaliphilic Bacillus strain. First, the native l-lactate dehydrogenase gene (ldh) was knocked out, and the d-lactate dehydrogenase gene from Lactobacillus delbrueckii was introduced to construct a d-lactate producer.The key gene responsible for exopolysaccharide biosynthesis (epsD ...

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  • Electrochemical fabrication of FeSx films with high ...

    under various conditions.30 2. Experimental section 2.1 Chemicals and materials Laboratory equipment and chemicals include ethylene glycol (EG, 99%), choline chloride (ChCl, 99%), ferric chloride hexa-hydrate(FeCl 36H 2O,98%),thiourea(CH 4N 2S,99%),potassium hydroxide (KOH, 95%) are purchased from Aladdin Ltd. (Shanghai, China) and used as ...

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  • Yuanyuan Yu, Yongjun Sun * , Jun Zhou, Aowen Chen and ...

    2021-6-23 · were purchased from Sinopharm Chemical Reagent Co., Ltd. (China). Sodium hydroxide (NaOH) is of analytical grade and was purchased from Nanjing Chemical Reagent Co., Ltd. (China). Copper chloride (CuCl2 2H2O) is analytically pure and was purchased from Nanjing Shengjian Quanhua Glass Instrument Co., Ltd. (China). High purity nitrogen

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  • Assessment of antioxidant properties of membrane ...

    The lowest MW fraction (less than 1 kDa) contributed to the highest DPPH, superoxide, hydroxyl and metal chelation activity because influence of low MW and high content of hydrophobic amino acid in peptide chain. Results from this study indicated that MMPH peptides donate protons to free radicals be …

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  • Microdroplets as Microreactors for Fast Synthesis of ...

    2018-12-24 · The formation of amide bonds is one of the most valuable transformations in organic synthesis. Beckmann rearrangement is a well-known method for producing secondary amides from ketoximes. This study demonstrates the rapid synthesis of ketoximes and amides in microdroplets. Many factors are found to affect the yield, such as microdroplet generation devices, temperature, catalysts, …

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  • Resource Recycling of Mn-Rich Sludge: Effective

    2021-3-16 · Groundwater treatment sludge is a Fe/Mn-rich waste generated in mass production in a groundwater treatment plant for potable water production. The conventional disposal of sludge, such as direct discharge into river/lake, sea, and landfill, is not environmentally sustainable. Herein, a novel method was proposed to effectively separate Fe/Al and recover Mn via a combined hydrochloric acid ...

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  • Nanofluid of magnetic‐activated charcoal and

    2016-11-2 · Our study site was the Cretaceous chalk cliffs in East Sussex, United Kindgom (), where cliff retreat has generated wide coastal platforms characterized by abundant bands of chemically inert and erosionally resistant flint (Fig. 2 A and B).Both the lithology and structure of the chalk are relatively uniform along the examined coast, although there are known subtle variations in jointing ...

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  • Recent acceleration in coastal cliff retreat rates on the ...

    The microalga Dunaliella salina is the best commercial source of natural β-carotene. Additionally, different species of Dunaliella can accumulate significant amounts of valuable fine chemicals such as carotenoids, glycerol, lipids, vitamins, minerals and proteins. They also have a large potential for biotechnological processes such as expressing of foreign proteins and treatment of wastewater.

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  • Efficient fermentative production of polymer-grade d ...

    2016-1-12 · Results. In this study, we developed a process for high-optical-purity d-lactate production using an engineered alkaliphilic Bacillus strain. First, the native l-lactate dehydrogenase gene (ldh) was knocked out, and the d-lactate dehydrogenase gene from Lactobacillus delbrueckii was introduced to construct a d-lactate producer.The key gene responsible for exopolysaccharide biosynthesis (epsD ...

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  • 1437 h 1437.

    a 25 ml volumetric flask. Then ferric chloride solution (0.5 ml, 0.10 mol/L), potassium ferricyanide solution (0.5 ml, 0.008 mol/L), and hydrochloric acid solution (0.5 ml, 0.10 mol/L) were added, respectively. The mix-ture was finally diluted with ethanol (60%) to a defined volume (25 …

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  • HIGH-TEMPERATURE CHARACTERISTICS OF STAINLESS

    high-temperature service, strength at temperature is related to time at temperature. Allowable Deformation Another factor to consider in designing for high-temperature service is the amount of deformation that can be permitted during the total service life. This factor determines which of two high-temperature strength properties

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  • MATERIALS SCIENCE, MULTIDISCIPLINARY

    The leaching of nickeliferous laterite with ferric chloride Article The melting of corundum (Al2O3) under high pressure conditions Article The problem of fiber pullout Article The stability of NiTi-Pd and NiTi-Hf high temperature shape memory alloys Proceedings Paper

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  • Resource Recycling of Mn-Rich Sludge: Effective

    2021-3-16 · Groundwater treatment sludge is a Fe/Mn-rich waste generated in mass production in a groundwater treatment plant for potable water production. The conventional disposal of sludge, such as direct discharge into river/lake, sea, and landfill, is not environmentally sustainable. Herein, a novel method was proposed to effectively separate Fe/Al and recover Mn via a combined hydrochloric acid ...

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  • NIMO-CKD-UK: a real-world, observational study of

    2020-12-10 · Intravenous iron is often used to treat iron deficiency anaemia in non-dialysis chronic kidney disease (ND-CKD), but the optimal dosing regimen remains unclear. We evaluated the impact of high- versus low-dose intravenous iron isomaltoside on the probability of retreatment with intravenous iron in iron-deficient ND-CKD patients. This real-world, prospective, observational study collected data ...

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  • Novel LC–MS/MS method for analysis of metformin

    2019-7-9 · Highly sensitive and selective liquid chromatography/tandem mass spectrometry (LC–MS/MS) method was developed and validated for the simultaneous estimation of the recently approved oral hypoglycemic mixture; metformin (MET) and canagliflozin (CFZ) in human plasma using propranolol HCl (PPL) and tadalafil (TDF) as internal standards (IS), respectively.

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  • Study on the Appropriate Production Parameters of a

    2020-2-11 · The change regulations of the smelting parameters in a gas-injection blast furnace are investigated using theoretical calculations. The results show that when the volume of gas injected, the oxygen enrichment rate and the theoretical combustion temperature of tuyere are 600 m 3 /tHM, 10% and 1950~2200 ∘ C, respectively, the conditions meet the smelting requirements of a blast furnace. With ...

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  • Risk-Based Process Safety Design

    2011-12-15 · example, a process might use substance chloride, which is known to react vigor-ously with water. If water is not present at the site, there is no need to address that reaction scenario in ERS design. If water is on-site, but is not used in the same process as chloride there is still no need to address B in ERS design. If wa-

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  • DESIGN AND SELECTION OF PLASTIC PRESSURE PIPE

    2016-3-1 · conditions that may occur during the life of the pipe. Both AWWA M55 PE Pipe—Design and Installation and AWWA M23 PVC Pipe—Design and Installation employ this type of analysis method. The magnitude of the pressure surge caused by sudden changes in the velocity of the flow in a …

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  • 1437 h 1437.

    a 25 ml volumetric flask. Then ferric chloride solution (0.5 ml, 0.10 mol/L), potassium ferricyanide solution (0.5 ml, 0.008 mol/L), and hydrochloric acid solution (0.5 ml, 0.10 mol/L) were added, respectively. The mix-ture was finally diluted with ethanol (60%) to a defined volume (25 …

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  • Optimal dietary copper requirements and relative ...

    2020-5-22 · The objective of this study was to determine the effects of supplementing Cu on growth performance, Cu metabolism and Cu-related enzyme activities of weanling pigs fed diets with two different Cu sources, and to estimate optimal Cu requirements and relative bioavailability from these two sources for pigs. Weanling pigs were allocated to 14 treatments arranged factorially, including 6 …

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  • Catalyst design by scanning probe block copolymer ...

    2018-4-10 · It is a major challenge in catalysis to uncover structure–performance relationships that drive the design and optimization of high-performance/low-cost catalysts. When one considers the number of potential elemental combinations for catalysts and then includes variables, such as particle size and elemental stoichiometry, the number of possibilities is daunting.

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  • Study on the Appropriate Production Parameters of a

    2020-2-11 · The change regulations of the smelting parameters in a gas-injection blast furnace are investigated using theoretical calculations. The results show that when the volume of gas injected, the oxygen enrichment rate and the theoretical combustion temperature of tuyere are 600 m 3 /tHM, 10% and 1950~2200 ∘ C, respectively, the conditions meet the smelting requirements of a blast furnace. With ...

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  • Nanomole-scale high-throughput chemistry for the

    2015-1-2 · With these conditions, high-purity product samples were successfully prepared for 54 of the 96 functionality-rich substrate combinations (Fig. 1C and table S4) when run on a 500-μmol scale (~25 mg) (25, 26). This chemistry was generally tolerant of polar functional groups and heterocycles; however, nearly half of the 96 reactions failed to ...

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  • Efficacy of halopeRIdol to decrease the burden of

    Introduction Delirium in critically ill adults is associated with prolonged hospital stay, increased mortality and greater cognitive and functional decline. Current practice guideline recommendations advocate the use of non-pharmacological strategies to reduce delirium. The routine use of scheduled haloperidol to treat delirium is not recommended given a lack of evidence regarding its ability ...

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  • Frontiers | High-Level Extracellular Expression of a

    2021-3-11 · N-acetyl-β-D glucosamine (GlcNAc) is wildly used in cosmetics, nutraceuticals and pharmaceuticals. The traditional chemical process for GlcNAc production from chitin causes serious acidic pollution. Therefore, the enzymatic hydrolysis becomes a great promising and alternative strategy to produce GlcNAc. β-N-acetylglucosaminidase (NAGase) can hydrolyze chitin to produce GlcNAc.

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  • A research on effectiveness of training & development ...

    The results indicated that the optimal conditions of 3:10 (w/v) high solid-liquid ratio bioleaching process were inoculation… In this study the mixed culture of acidophilic bacteria …

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  • Optimizing Coagulation Process for Low to High

    Approach: In this study, the effectiveness of aluminum sulfate and ferric chloride was evaluated at different pH values and coagulant dosage to find optimal operational conditions for low to high turbidity waters. The influence of lime, as a coagulant aid, on coagulation process was also studied.

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  • Optimization of selective acid hydrolysis of cellulose

    2021-7-3 · Full Article. Optimization of Selective Acid Hydrolysis of Cellulose for Microcrystalline Cellulose using FeCl 3. Jinbao Li, a,b, * Xiangrong Zhang, a, * Meiyun Zhang, a Huijuan Xiu, a and Hang He a,b In the process of acid hydrolysis of cellulose, hydrolyzing the amorphous regions while retaining the crystalline regions is the key technology for obtaining microcrystalline cellulose products.

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  • Effect of Extraction Solvents and Drying Conditions on ...

    2018-2-9 · Two experiments with factorial design of type 3 × 4 was carried out to study the effect of two factors, the drying method (X 1) and type of solvent (X 2), on four different responses (TPC, TFC, DPPH and FRAP) of red- and yellow-fleshed watermelon rind powders. Three drying methods (hot-air drying at 40 and 60°C and freeze-drying) and four

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  • 1437 h 1437.

    a 25 ml volumetric flask. Then ferric chloride solution (0.5 ml, 0.10 mol/L), potassium ferricyanide solution (0.5 ml, 0.008 mol/L), and hydrochloric acid solution (0.5 ml, 0.10 mol/L) were added, respectively. The mix-ture was finally diluted with ethanol (60%) to a defined volume (25 …

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  • Reactor Project: Ammonia Synthesis

    1997-10-17 · Ammonia synthesis optimization is a topic of high interest in industry as the market continues to expand and demand increases. This proposed process is designed to produce 1,016 metric tons/day of ammonia at a feed of 5,500 kmol/hr while maintaining the best compromise between production and purity.

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  • Publications - Australian Centre for Research on ...

    2021-6-15 · Developments in the design and usage of high performance ion-exchange columns. Plenary lecture at 39th International Symposium on High Performance Liquid Phase Separations and Related Techniques (HPLC 2013), Amsterdam, The Netherlands, 16-20 June 2013. PR Haddad. Recent developments in the separation of inorganic ions by ion chromatography and ...

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  • Efficient fermentative production of polymer-grade d ...

    2018-10-24 · An experiment and simulation study of the effect of using liquid additives on the selective non-catalytic reduction (SNCR) process is presented, providing a novel way for plants reducing NO X emissions. An experimental study is conducted in an entrained flow reactor, and CHEMKIN is applied for simulation study.

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  • Experiment and simulation study of the effect of

    Effect of Different Temperatures on the Activity of Salivary Amylase on Starch Materials Required. Three series of test tubes having iodine solution in each, test tubes, ice cubes, water, 15 ml 1% starch solution + 3 ml 1% NaCl, saliva solution, droppers, thermometer, Bunsen burner and wire gauze.

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  • Study the effect of different temperatures & 3

    2020-9-18 · Further investigation showed that high tray temperatures in the bottom of the column minimized any reduction in the kinetic rate for CO 2 absorption. Due to heats of reaction, bottom tray temperatures were raised 30-40C above the gas feed temperatures, creating near equilibrium conditions. The top section of the absorber was mostly

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  • Pharmacological Activities and Mechanisms of Hirudin

    2021-4-16 · Hirudin is an effective natural thrombin inhibitor, however, the low production of natural hirudin limits its research and application. With the development of bioengineering technology, recombinant hirudin (rH) was synthesized by genetic engineering, which possesses similar chemical structure and pharmacological activity to natural hirudin.

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  • Frontiers | A Technical System for the Large-Scale ...

    2021-5-12 · To optimize the major UAE conditions that affecting the yield of ZNC, RSM was employed under CCD mode. The concentrations of ZNC used in the design matrix are shown in Table 1, and the model that can be used to navigate the design space was further analyzed using Design Expert 12.0.3.0 software (trial version). The model was as follows:

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  • Dr Tomas Ramirez Reina | University of Surrey

    2016-8-26 · Under the optimal conditions of a pulse duty cycle of 0.3, current density of 35 mA/cm 2, pulse frequency of 3.0 kHz, electrode distance of 1.0 cm, and reaction time of 40 min, the removal efficiencies of chemical oxygen demand (COD), oils and greases, turbidity, total suspended solids, and polyacrylamide reach 98.3, 99.0, 98.8, 98.1 and 94.3% ...

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  • Treatment of oilfield produced water with ...

    2017-7-24 · Flocculation is one of the most effective methods of oilfield wastewater treatment. It is a physical–chemical treatment process that uses continuously recycled media and a variety of additives to improve the settling properties of SSs through improved floc bridging (Borchate et al. 2014).Flocculation is employed for the treatment of high-phosphorus hematite flotation wastewater with a ...

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  • The flocculation mechanism and treatment of oily ...

    Research on the application of new nanomaterial -Al2O3 in industrial product modelling design by Wei Bi, Zidong He Abstract: Gamma-Al2O3 is one of many aluminas. It has a series of remarkable characteristics, such as porosity, large specific surface area, high activity, and good thermal stability.

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  • International Journal of Nanotechnology (IJNT ...

    2020-4-9 · Invertases catalyze the hydrolysis of sucrose into fructose and glucose and can be employed as an alternative in producing high fructose syrup. In this study, we reported the heterologous expression of an invertase gene (GspInv) of Gongronella sp. w5 in Komagataella pastoris. GspInv activity reached 147.6 ± 0.4 U/mL after 5 days of methanol induction. GspInv is invertase with a high specific ...

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  • Frontiers | Identification and Immobilization of an ...

    Hashim, Nur Hasyimah (2019) Study Of Metal Impregnated Zno Thin Film As Thermal Interface For High Power Led Applications. Masters thesis, Universiti Sains Malaysia. Kanagaraj, Dheepan Chakravarthii Musiri (2019) Parametric Study Of Microchannel Substrates For High Power Led Applications. PhD thesis, Universiti Sains Malaysia.

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  • Welcome to [email protected] - USM Research and

    2017-1-18 · The optimal conditions obtained were 60 min of milling in case of dry ball milling while 10 repeated milling operations were required in case of wet disk milling. Maximum glucose (89.4%) and xylose (54.3%) were obtained with conventional ball milling method as compared to 78.5% glucose and 41.5% xylose with wet disk milling method.

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  • Recent updates on different methods of pretreatment

    Citrus contains a range of highly beneficial bioactive compounds, such as polyphenols, carotenoids, and vitamins that show antimicrobial and antioxidant properties and help in building the body's immune system. On consumption or processing,

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  • Membrane Processes

    2004-10-14 · dosage of > 20 mg/L for ferric chloride, > 60 mg/L for alum and < 18 mg/L for poly-aluminum chloride for effective pretreatment. Their results demonstrated reduced membrane fouling for both under-dose and optimal dosages of coagulants. Incorporating a sedimentation unit as a part of pretreatment was found to improve the membrane performance.

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  • Frontiers | A Technical System for the Large-Scale ...

    2021-5-12 · To optimize the major UAE conditions that affecting the yield of ZNC, RSM was employed under CCD mode. The concentrations of ZNC used in the design matrix are shown in Table 1, and the model that can be used to navigate the design space was further analyzed using Design Expert 12.0.3.0 software (trial version). The model was as follows:

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  • Treatment of oilfield produced water with ...

    2016-8-26 · Under the optimal conditions of a pulse duty cycle of 0.3, current density of 35 mA/cm 2, pulse frequency of 3.0 kHz, electrode distance of 1.0 cm, and reaction time of 40 min, the removal efficiencies of chemical oxygen demand (COD), oils and greases, turbidity, total suspended solids, and polyacrylamide reach 98.3, 99.0, 98.8, 98.1 and 94.3% ...

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  • Prospects of Using Biocatalysis for the Synthesis and ...

    2021-5-7 · 2. Biodegradability of Polymers. With the awareness of the problem of accumulating plastic waste, the polymers used began to be classified into four categories, taking into account their biodegradability and the feedstock for their production (Table 1) [].Plastics can be produced either from renewable resources and the monomers of plant, microbial or animal nature, or from fossil resources ...

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  • Frontiers | Studying the Impact of Different Field ...

    2021-5-12 · Chenopodium quinoa Willd (quinoa) has acquired an increased agronomical and nutritional relevance due to the capacity of adaptation to different environments and the exceptional nutritional properties of their seeds. These include high mineral and protein contents, a balanced amino acid composition, an elevated antioxidant capacity related to the high phenol content, and the absence of …

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  • Extraction optimization and influences of drying methods ...

    2017-8-24 · RESEARCH ARTICLE Extraction optimization and influences of drying methods on antioxidant activities of polysaccharide from cup plant (Silphiumperfoliatum L.) Hong-Mei Shang1,2☯, Hai-Zhu Zhou1,2☯, Ran Li1, Meng-Ying Duan1, Hong-Xin Wu3, Yu- Jie Lou1,2* 1 College of Animal Science and Technology, Jilin Agricultural University, Jilin, Changchun, China, 2 Key

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  • The flocculation mechanism and treatment of oily ...

    2017-7-24 · Flocculation is one of the most effective methods of oilfield wastewater treatment. It is a physical–chemical treatment process that uses continuously recycled media and a variety of additives to improve the settling properties of SSs through improved floc bridging (Borchate et al. 2014).Flocculation is employed for the treatment of high-phosphorus hematite flotation wastewater with a ...

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  • IOP Conference Series: Materials Science and

    2020-1-21 · From the analysis, activated carbon with sodium chloride activation was a high surface area of 148.6 m 2 /g and a low porosity of 25.72 °A. From the experiments were found that pH for adsorption of 2, absorption time 90 minutes, concentrations used in the adsorption of 50 ppm and the adsorption temperature 30 °C were optimum for dye adsorption.

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  • Synthesis and characterization of calcium carbonate ...

    2020-4-21 · In this study, a procedure for producing calcium carbonate whisker through yellow phosphorus slag carbonation without adding any crystal control agents was proposed. The influence of process parameters on the crystal phase and morphology of the product was discussed. The content of aragonite in the product was more than 90% under optimal conditions. The whiteness of the product …

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  • Pain Management Questions and Answers | Study.com

    A student performed the synthesis of aspirin using a water bath at 90C instead of 50C. The final product was tested for the presence of phenols with ferric chloride. This test was negative (no colo...

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