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design of study on optimal conditions of 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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  • Efficiency Comparison of PolyDADMAC Coagulant

    2017-11-1 · The aim of this study was to evaluate and compare of PolyDADMAC with ferric chloride as a coagulant on the removal of turbidity, Coliform and Organic matter from Ahvaz drinking water. Materials and Methods: This study was carried out in a lab scale and using a …

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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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  • A study on the multifunction of ferrous chloride in the ...

    2009-9-30 · It can be found from Fig. 2(a1), (b1) and (c1) that particulates with diameter of about 0.3 μm distributed on the wall of the macrovoids, in addition, such an observation became more obvious as the additive usage increased from 4 to 9 wt%. Compared with Fig. 2(b2), Fig. 2(c1) indicates that the particulates even can be observed in the cellular structure when the additive usage increased to 9 wt%.

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  • Reaction mode between Si and Fe and evaluation of

    2007-1-1 · A kind of Fe-polysilicate polymer, poly-silicic-ferric (PSF) coagulant was prepared by co-polymerization (hydroxylation of mixture of Fe 3+ and fresh polysilicic acid (PS)), in which PSF0.5, PSF1 or PSF3 denotes Si/Fe molar ratio of 0.5, 1 or 3, respectively. The effects of Si/Fe ratio and reaction time (co-polymerization time or aging time) on the reaction mode between Si and Fe were studies ...

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  • Feasibility and optimization of wastewater treatment by ...

    2020-11-17 · Conditions optimization was realized by single factor analysis and orthogonal test designs. The objectives of this study are to (1) select an optimal coagulant for CEPT process; (2) evaluate the influence of agitation, coagulation time, set - tling time, pH and dosage thus determining an optimal working conditions combination. 2. Material and ...

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  • Study on Environmental Materials with Treatment of

    This study aimed at, pre-treatment of sweet potato starch wastewater and acquisition the application conditions of environmental materials though coagulation precipitation. The removal rates of COD and turbidity were investigated by process to find kind and quantity of suitable coagulant, quantity of coagulate aids, pH and setting time. The results showed that poly aluminum ferric chloride ...

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  • Mechanistic insights into the effect of poly ferric ...

    2021-2-1 · 1. Introduction. Poly ferric sulfate (PFS), the polymerized iron salts, can provide a variety of nucleic hydroxyl high-valence complex ions and hydrolyze to the highly cross-linked hydrophobic multinucleate and multichain-hydroxyl polymers after dissolving in aqueous phase, making it possess the high coagulation efficiency (Jiang et al., 1998; Zouboulis et al., 2008).

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  • Removal of silver nanoparticles by coagulation

    2013-10-15 · In the aluminum sulfate and ferric chloride coagulation systems, the water parameters slightly affected the AgNP removal. However, in the poly aluminum chloride and polyferric sulfate coagulation systems, the optimal removal efficiencies were achieved at pH 7.5, while higher or lower of pH could reduce the AgNP removal.

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  • Characteristic of silver nanowires prepared by polyol ...

    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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  • Reaction mode between Si and Fe and evaluation of

    2007-1-1 · A kind of Fe-polysilicate polymer, poly-silicic-ferric (PSF) coagulant was prepared by co-polymerization (hydroxylation of mixture of Fe 3+ and fresh polysilicic acid (PS)), in which PSF0.5, PSF1 or PSF3 denotes Si/Fe molar ratio of 0.5, 1 or 3, respectively. The effects of Si/Fe ratio and reaction time (co-polymerization time or aging time) on the reaction mode between Si and Fe were studies ...

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  • (PDF) Effectiveness of poly Aluminium ferric chloride

    Effectiveness of poly Aluminium ferric chloride for turbidity and color removal from low to medium turbid water. 2014. Afshin Ebrahimi. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER.

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  • Feasibility and optimization of wastewater treatment by ...

    2020-11-17 · Conditions optimization was realized by single factor analysis and orthogonal test designs. The objectives of this study are to (1) select an optimal coagulant for CEPT process; (2) evaluate the influence of agitation, coagulation time, set - tling time, pH and dosage thus determining an optimal working conditions combination. 2. Material and ...

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  • Optimal conditions of Al and Fe extraction from

    2012-8-9 · D-optimal design was used to study the effect of T, t, and r on Al and Fe concentrations as two responses. The D-optimal design was specifically constructed for this experiment. There were three parameters used in this design, which were temperature, T (°C), time, t (min), and ratio of soil to extractant, r (mg/l).

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  • Study on Environmental Materials with Treatment of

    This study aimed at, pre-treatment of sweet potato starch wastewater and acquisition the application conditions of environmental materials though coagulation precipitation. The removal rates of COD and turbidity were investigated by process to find kind and quantity of suitable coagulant, quantity of coagulate aids, pH and setting time. The results showed that poly aluminum ferric chloride ...

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  • Evaluation of ferric chloride and electroflocculation of ...

    2020-2-1 · In this study, the different harvesting methods of Chlorella pyrenoidosa such as centrifugation, filtration, and flocculation with parameters such as pH, presence of alum and FeCl 3 also studied were compared based on harvesting efficiency. Among these methods, flocculation using FeCl 3 and electroflocculation using iron electrodes showed highest efficiencies of 98.5 and 95 %, respectively.

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

    2019-5-25 · This is a two-part work on the chemistry of iron(III) as coagulant in the treatment of cork processing wastewater. The main aim of the first part was to determine the removal of organic matter as measured by reductions in chemical oxygen demand (COD), polyphenols (P), and aromatic compounds (A) that can be obtained using this physicochemical process. To this end, jar-test experiments were …

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  • Alum and Ferric Chloride: Pros, Cons, and Substitutes

    2017-10-18 · ATS 835 is a great replacement for alum because it does an amazing job, but with a much, much smaller dose. For example, a water treater who feeds 25 parts of alum (or a related product) might get away with feeding just 2-3 parts of ATS 835. And because ATS 835 is completely soluble, it will hardly increase solids due to the coagulant.

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  • Characterisation and coagulation performance of ...

    2017-1-14 · A new type of coagulant, polysilicate-ferric-zinc (PSFZn) with different Fe/Zn molar ratios, was synthesised using water glass (industrial grade, w(SiO2) = 21 mass %, ρ = 1.34 × 103 kg m−3, modulus = 3.2), FeSO4 · 7H2O, ZnSO4, and NaClO3 by way of co-polymerisation in the same (Fe + Zn)/Si molar ratio based on polysilicate-ferric (PSF). The effect of the Fe/Zn molar ratios on the ...

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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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  • (PDF) Effectiveness of poly Aluminium ferric chloride

    Effectiveness of poly Aluminium ferric chloride for turbidity and color removal from low to medium turbid water. 2014. Afshin Ebrahimi. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER.

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  • Global (United States, European Union and China)

    2019-4-25 · Global (United States, European Union and China) Poly Ferric Chloride (PFC) Market Research Report 2019-2025 is a market research report available at US 3280 for a Single User PDF License from RnR Market Research Reports Library.

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  • Poly Ferric Chloride PFC Market report points out

    The Poly Ferric Chloride (PFC) market report provides a detailed analysis of global market size, value chain optimization, segmentation market growth, market share, competitive Landscape, regional and country-level market size, sales analysis, impact of domestic and global market players, trade regulations, recent developments, opportunities analysis, strategic market growth analysis, product ...

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  • Reaction mode between Si and Fe and evaluation of

    2007-1-1 · A kind of Fe-polysilicate polymer, poly-silicic-ferric (PSF) coagulant was prepared by co-polymerization (hydroxylation of mixture of Fe 3+ and fresh polysilicic acid (PS)), in which PSF0.5, PSF1 or PSF3 denotes Si/Fe molar ratio of 0.5, 1 or 3, respectively. The effects of Si/Fe ratio and reaction time (co-polymerization time or aging time) on the reaction mode between Si and Fe were studies ...

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  • Feasibility and optimization of wastewater treatment by ...

    2020-11-17 · Conditions optimization was realized by single factor analysis and orthogonal test designs. The objectives of this study are to (1) select an optimal coagulant for CEPT process; (2) evaluate the influence of agitation, coagulation time, set - tling time, pH and dosage thus determining an optimal working conditions combination. 2. Material and ...

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  • Ferric chloride in China, Ferric chloride Manufacturers ...

    Find listing of companies trading Ferric chloride in China. Join the list of leading China Ferric chloride, manufacturers, suppliers, exporters & wholesalers offering wide spectrum of Ferric chloride at …

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  • ferric chloride made in china, ferric chloride made in ...

    ferric chloride made in china, Wholesale Various High Quality ferric chloride made in china Products from Global Sodium Tripolyphosphate Suppliers and ferric chloride made in china …

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  • ferric chloride powder on sale - China quality ferric ...

    Brown Powder Poly Aluminium Ferric Chloride CAS No 10028-22-5 Eco - Friend. Delivery Time:7-10 working daysCertification:ISO9001:2008Brown Powder Poly Aluminium Ferric Chloride CAS No 10028-22-5 Eco - Friend Product feature: PFS refers to efficient molysite type of inorgan...

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  • Wholesale Ferric Chloride - Find Reliable Ferric

    Wholesale ferric chloride products from ferric chloride wholesalers, You can wholesale chromium, wholesale polyvinyl chloride resin and more on Made-in-China.com.

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  • Simultaneous presence of poly titanium chloride and

    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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  • Characteristic of silver nanowires prepared by polyol ...

    2021-5-18 · In this study, silver nanowires (AgNWs) were prepared by the polyol method using silver nitrate (AgNO ... of ferric chloride (FeCl 3), and the AgNWs exhibit optimal morphology with the diameter ranging from 60 to 200 nm. The ... In order to obtain the optimal experimental conditions for the preparation of AgNWs, the orthogonal experiment

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  • (PDF) Effectiveness of poly Aluminium ferric chloride

    Effectiveness of poly Aluminium ferric chloride for turbidity and color removal from low to medium turbid water. 2014. Afshin Ebrahimi. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER.

    Get Price
  • ferric chloride made in china, ferric chloride made in ...

    ferric chloride made in china, Wholesale Various High Quality ferric chloride made in china Products from Global Sodium Tripolyphosphate Suppliers and ferric chloride made in china …

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  • Optimal conditions of Al and Fe extraction from

    2012-8-9 · D-optimal design was used to study the effect of T, t, and r on Al and Fe concentrations as two responses. The D-optimal design was specifically constructed for this experiment. There were three parameters used in this design, which were temperature, T (°C), time, t (min), and ratio of soil to extractant, r (mg/l).

    Get Price
  • (PDF) Optimal conditions of Al and Fe extraction from ...

    Optimal conditions of Al and Fe extraction from laterite soil using D-optimal design. The Environmentalist, 2012. Yusri Yusup. Tjoon Teng. Abbas Fadhl Mubarek Al-karkhi. Yusri Yusup. Tjoon Teng. Abbas Fadhl Mubarek Al-karkhi. Download PDF. Download Full PDF Package. This …

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  • Study on Environmental Materials with Treatment of

    This study aimed at, pre-treatment of sweet potato starch wastewater and acquisition the application conditions of environmental materials though coagulation precipitation. The removal rates of COD and turbidity were investigated by process to find kind and quantity of suitable coagulant, quantity of coagulate aids, pH and setting time. The results showed that poly aluminum ferric chloride ...

    Get Price
  • 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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  • 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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  • Characterisation and coagulation performance of ...

    2017-1-14 · A new type of coagulant, polysilicate-ferric-zinc (PSFZn) with different Fe/Zn molar ratios, was synthesised using water glass (industrial grade, w(SiO2) = 21 mass %, ρ = 1.34 × 103 kg m−3, modulus = 3.2), FeSO4 · 7H2O, ZnSO4, and NaClO3 by way of co-polymerisation in the same (Fe + Zn)/Si molar ratio based on polysilicate-ferric (PSF). The effect of the Fe/Zn molar ratios on the ...

    Get Price
  • 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 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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  • Study on the effect of chitosan conditioning on sludge ...

    2019-2-1 · For example, Zhu et al. (Zhu et al. 2007) studied the treatment of excess sludge with PAM (polyacrylamide) - PAFC (polymeric ferric chloride), and found that when the total dosage of flocculants was 190 mg/L, the moisture content in sludge decreased from 97% to 79%, and the sludge volume decreased by 86%.

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  • Comparison of ferric chloride and aluminum sulfate

    2016-7-14 · The results showed that ferric chloride of 20 mg/L and aluminum sulfate of 30 mg/L were the optimal dosages for total phosphorus (TP) removal, and the TP removal efficiency was over 80%. In long-term continuous operations, both ferric chloride and aluminum sulfate effectively mitigated membrane fouling, with the corresponding growth rate of ...

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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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  • Feasibility and optimization of wastewater treatment

    The optimal working condition could be at pH 7.0, settling time 15 min, and velocity gradient of 174.80 and 15.56 s−1 for mixing and reaction phase respectively. While the coagulant dosage depends on raw water attributes, which had a decisive effect on CEPT treatment performances. However, the three coagulants behaved poorly in nitrogen removal.

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  • Global Poly Aluminium Ferric Chloride (PAFC) Market ...

    The global Poly Aluminium Ferric Chloride (PAFC) market is valued at xx million US in 2017 and is expected to reach xx million US by the end of 2025, growing at a CAGR of xx.x % between 2018 and 2025. The major manufacturers covered in this report. Pencco. Kemira.

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  • Influence of solvent used on oxidative polymerization

    Poly(3-hexylthiophene) was successful synthesized by oxidative polymerization with anhydrous ferric chloride, using dichloromethane as solvent. A large difference of molecular weight is observed by this polymer in relation to poly(3-hexylthiophene) synthesized by the same conditions…

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  • Evaluation of the Tenax trap in the Sample Analysis at ...

    2.1. Design of SAM-Like Experiments In order to simulate the reactions occurring in the SAM Tenax trap that might result in the formation of chlorinated hydrocarbons, we conducted analogue experiments using commercial instruments operated under “SAM-like” conditions. While many aspects of these analogue experiments were similar to the SAM

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  • Determination of Curcuma longa L. (Turmeric) Leaf ...

    Curcuma longa L. (turmeric) has been used as a functional food material, but other parts of it such as leaves are wasted as a byproduct. This work concentrated on developing turmeric leaves as a functional food material by establishing its optimal extraction condition. Response surface methodology was applied to optimize turmeric leaf extraction conditions.

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  • The Researches on Preparation of Polysilicate

    Introducing the main compositions and properties of fly ash, and review extraction methods of Si,Al and Fe from fly ash, compare the molecular structure and water treatment results among polysilicate flocculants, PFS and PAM, describe preparation methods, conditions and water treatment results of the polysilicate flocculants with the extracts.

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  • Some Studies on the Treatment of Industrial Waste

    2019-5-1 · The chemical formula of ferric chloride is FeCl3 (molecular weight 162.2 g/mole, density 2.90 g/cm3). Ferric chloride is produced as a solution from the oxidation of ferrous chloride with chlorine and it has the unusual distinction of being one of the purest and most concentrated forms of iron commercially available for water treatment.

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  • Investigation on Surface Roughness of Inconel 718 in ...

    2017-1-29 · The present work is focused on estimating the optimal machining parameters required for photochemical machining (PCM) of an Inconel 718 and effects of these parameters on surface topology. An experimental analysis was carried out to identify optimal values of parameters using ferric chloride (FeCl 3 ) as an etchant. The parameters considered in this analysis are concentration of etchant ...

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  • Food & Function - RSC Publishing Home

    (TEA) and ferric chloride were purchased from Sigma-Aldrich (St Louis, MO, USA). Trifluoroacetic acid, acetonitrile, metha-nol and absolute ethanol were of HPLC grade. All other chemi-cals were of analytical grade. 2.2 Experimental design In this study, wheat bread and gluten-free bread were co-

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  • Microalgae Chlorella vulgaris biomass harvesting by ...

    In optimal conditions, a linear calibration graph was achieved in the concentration range of 0.2–30 ng·mL −1 with a determination coefficient (R 2) of 0.9953. The detection limit, the enhancement factor, inter- and intra-day relative standard deviations (for six consecutive extractions at the concentration level of 10 ng·mL −1 ) were 0.04 ng·mL −1 , 100, 2.38% and 1.52%, respectively.

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  • A study on the mechanism of oxidized quinoline

    2018-6-28 · The objectives of this study were: (1) to evaluate chitosan flocculation performance in the harvesting of C. vulgaris biomass and determine its optimal dose, (2) to disclose the sedimentation properties of C. vulgaris biomass flocculated by chitosan, (3) to reveal the recyclability of the spent medium from flocculation to regrow microalgae and ...

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  • SciELO - Brasil - EFFECTIVENESS OF PHOSPHORUS

    2020-3-27 · It has been reported that excessive Fe 2+ ions could compete with organic pollutants for the active sites of sulfate radicals because of their reducibility. 23 When highly water-soluble (26.3 g/100 g H 2 O at 20 °C) ferrous sulfate was added into a PS solution, PS immediately started to release sulfate radicals and the pH decreased. Due to the high oxidation potential of the sulfate radicals ...

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  • Immobilized Microbial Catalytic Oxidation Preparation

    Abstract. The present study evaluated the phosphorus removal in a Sequencing Batch Reactor (SBR - 2,500L) used to treat the wastewater from an office building in two steps: phase I-Enhanced biological phosphorus removal (EBPR) and phase II-co-precipitation using FeCl 3 as precipitant. The raw sewage presented a high organic load variation ranging from 0.11 (phase I) to 0.66 (phase II) kgCOD.m ...

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  • Genome-resolved metagenomics reveals role of iron ...

    2019-3-19 · A novel inorganic polymer flocculant, biopolymeric ferric sulfate (BPFS), was prepared by immobilization technology of microorganisms and by oxidation of ferrous sulfate using domestic Thiobacillus ferrooxidans ( T. f ) under acidic condition. T. f was isolated on the agarose single-plate medium, which exhibited an unusual trait on the utilization of low concentration of the nitrogen source ...

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  • Frontiers | Uncovering Competitive and Restorative

    2021-5-28 · A recent study of 277 isolated Actinobacteria strains belonging to 17 genera found that 39.4% display a capacity for reducing FeCl 3 under oxic and initially neutral pH conditions, and living ...

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  • Multiple response optimization of the coagulation

    2016-5-18 · The objective of this study was to develop a multi-responses optimization method by an integrated UD-RSM experimental design for the coagulation process to improve the effluent quality from a …

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  • (PDF) Effect of ferric and ferrous iron addition on ...

    In this study we investigated the impact of ferric chloride 2011a; Geluwe et al., 2011). Biomass flocs usually form a cake (Fe(III)) and ferrous sulphate (Fe(II)) addition on phosphorus on the membrane surface since they are generally much removal and membrane fouling in MBRs to which molar ratios larger than the membrane pore size.

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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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  • SciELO - Brasil - EFFECTIVENESS OF PHOSPHORUS

    Thus, the present study aimed to evaluate the biological phosphorus removal and the co-precipitation treatment using ferric chloride (FeCl 3) to enhance phosphorus removal from sewage in an SBR. In addition, the activity of phosphorus-accumulating organisms (PAOs/DPAOs) and the possibility of metabolic activity inhibition due to FeCl 3 addition ...

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  • The impact of anionic polyacrylamide (APAM) on ...

    The results indicated that the optimal dosage of APAM had positive impacts on membrane fouling control, membrane cleaning and effluent quality. According to the flux decline curve, scanning electron microscopy and contact angle characterization, the optimal dosage of APAM was determined to be 0.1 mg/L coupled with 2 mg/L (as Al 3+ ) poly ...

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  • Immobilized Microbial Catalytic Oxidation Preparation

    1997-2-27 · Research aimed at understanding polychlorinated dibenzo-p-dioxin (PCDD) and dibenzofuran (PCDF) formation in combustion and incineration processes constitutes an important component in developing strategies for controlling their emission. Incinerator ashes from six different process sources have been examined and characterized in terms of their behavior with respect to …

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  • Polychlorinated Dibenzo-p-dioxins and Dibenzofurans ...

    2021-3-11 · Ferric chloride hexahydrate (FeCl 3 ⋅ 6H 2 O), ethylene glycol (CH 2 (OH) ⋅ CH 2 OH), and anhydrous sodium acetate (CH 3 COONa) were procured from S D Fine-Chem India. APTES was purchased from ...

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  • Study on the isoprene-producing co-culture system of ...

    2018-6-28 · The objectives of this study were: (1) to evaluate chitosan flocculation performance in the harvesting of C. vulgaris biomass and determine its optimal dose, (2) to disclose the sedimentation properties of C. vulgaris biomass flocculated by chitosan, (3) to reveal the recyclability of the spent medium from flocculation to regrow microalgae and ...

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  • Modeling and Optimization of New Flocculant Dosage

    2015-6-9 · use of a genetic algorithm with RSM to find the optimal parameters and to investigate the promoted effectiveness of predication for removal of pollutants from wastewater. 2. Materials and Methods 2.1. Materials Acrylamide (AM) was purchased from Amresco (Solon, OH, USA). Ferric chloride …

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  • Optimal Solution of Transportation Problem Using

    2012-7-2 · The results of mathematical modeling show that the optimal conditions for the preparation of MMP-1-loaded NPs were as follows: 7 min for the duration time of homogenization, 4.5 krpm for the agitation speed of homogenization and 0.4 for the volume …

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  • Preparation and optimization of matrix

    2009-5-12 · Sodium hydroxide (NaOH), ammonium persulfate and methylene chloride (DCM) were obtained from Merck (Germany). Fumaryl chloride was purified by distillation at 161 °C under ambient pressure. Anhydrous DCM was achieved by distillation under reflux conditions …

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  • An in vitro study of bare and poly(ethylene glycol)-co ...

    2015-8-27 · the need to obtain an optimal operation point for the equipment. In this paper the optimal dosage of Aluminum Sulfate(Al 2 (SO 4) 3 18H 2 O) is determined using a model of Artificial Neural Network (ANN) that, when faced with real time variations of turbidity is able to calculate an indicated dose of coagulant, with

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  • Determination of the Optimal Dosage of Aluminum

    2013-3-13 · Fluoride is a persistent and non-biodegradable pollutant that accumulates in soil, plants, wildlife and in human beings. Therefore, knowledge of its removal, using best technique with optimum efficiency is needed. The present survey highlights on efficacy of different materials for the removal of fluoride from water. The most important results of extensive studies on various key factors (pH ...

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  • A critical study on efficiency of different materials for ...

    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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  • Optimal dietary copper requirements and relative ...

    2019-7-11 · Organic compounds that contain nitrogen are very important intermediates in pharmaceutical and chemical industry. Hydroamination is the reaction that can form C–N bond with high atom economy. The research progress in metals catalyzed hydroamination of alkenes and alkynes from the perspective of reaction mechanism is categorized and summarized.

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  • Water Treatment Coagulation | Water Treatment |

    In order to study the effect of nutrients composition on the biological activity of the selected strains, three different nitrogen sources, ammonium nitrate (NH 4 NO 3), ammonium chloride (NH 4 Cl), and sodium nitrate (NaNO 3), were used at the same concentration of 4 g/L but, due to their nitrogen content, the corresponding C/N ratios were ...

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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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  • Cabeq 2011-01 verzija 3 - Srce

    ogy, conditions of enzyme reaction, and so on.16,17 In this study, RSM was adopted to optimize the process conditions for maximum production of the iron-polysaccharide complex. The amount (g) of w =20%Na 2 CO 3 aqueous solution (Z 1), the con-centration (w/%) of a FeCl 3 ·6H 2 O aqueous solu-tion (Z 2) and the temperature of the ferric ...

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  • Extraction optimization and influences of drying methods ...

    2017-8-24 · funded by China Postdoctoral Science Foundation and the National Natural Science Foundation of China (No. 31601972). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

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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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  • A critical study on efficiency of different materials for ...

    2013-3-13 · Fluoride is a persistent and non-biodegradable pollutant that accumulates in soil, plants, wildlife and in human beings. Therefore, knowledge of its removal, using best technique with optimum efficiency is needed. The present survey highlights on efficacy of different materials for the removal of fluoride from water. The most important results of extensive studies on various key factors (pH ...

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  • Xiaoguang Meng - Stevens Institute of Technology

    Development of water purification packets consisting of ferric iron and hypochlorite and a household filtration technique for removal of arsenic in drinking water and for disinfection. The technique was successfully demonstrated and implemented in Bangladesh in the early 2000s.

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  • Frontiers | Oxygen Sensing, Hypoxia Tracing and in

    2020-7-9 · Poly-γ-glutamic acid (γ-PGA) is an emerging biopolymer with various applications and γ-PGAs with different molecular weights exhibit distinctive properties. However, studies on the controllable molecular weights of biopolymers are limited. The purpose of this study is to achieve production of γ-PGAs with a wide range of molecular weights through manipulating the expression of γ-PGA ...

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  • Frontiers | Engineering Expression Cassette of pgdS

    Except for optimizing the Si-based materials themselves, advanced design of polymer binders plays a crucial role in ensuring the stable cycling of Si-based anodes and has attracted substantial attention. 27-31 Polymer binder occupies only a small proportion (<5 wt%) in the commercial LIBs electrodes, serving to glue all components (active ...

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  • Advances of polymer binders for silicon‐based anodes

    In order to study the effect of nutrients composition on the biological activity of the selected strains, three different nitrogen sources, ammonium nitrate (NH 4 NO 3), ammonium chloride (NH 4 Cl), and sodium nitrate (NaNO 3), were used at the same concentration of 4 g/L but, due to their nitrogen content, the corresponding C/N ratios were ...

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  • SCALLOP CULTURE IN CHINA - FAO

    2021-2-17 · Under normal conditions, the optimum larval density in the case of bay scallop is 8–10 individuals per millilitre. If the conditions, such as food supply, water exchange, etc., are kept at the optimal level, the density may be increased to 20 individuals per millilitre.

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  • Chemical Research in Chinese Universities

    The optimal conditions of the CL reaction were sulfuric acid 1.0×10-3 mol/L, Ru[(bpy) 3] 2+ 7.5×10-5 mol/L, Cu(III)/Ag(III) complexes 4.0×10-4 /5.0×10-4 mol/L, sample loop volume of 120 μL and flow rate of …

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  • Preparation and optimization of matrix

    2012-7-2 · Optimization analysis. Preparation of the NPs is a complex procedure as it involves several variables. Even slight changes may have significant impact on the quality of the final products [18, 19].In this study, RCCD and RSM were implemented to optimize the preparation procedure of the NPs, which made it possible to investigate a high number of independent variables at different levels with ...

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  • Frontiers | Polyhydroxybutyrate (PHB) Production

    2021-5-3 · Cupriavidus necator strain A-04 has shown 16S rRNA gene identity to the well-known industrial strain C. necator H16. Nevertheless, the cell characteristics and polyhydroxyalkanoate (PHA) production ability of C. necator strain A-04 were different from those of C. necator H16. This study aimed to express PHA biosynthesis genes of C. necator strain A-04 in Escherichia coli via an arabinose ...

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  • Density functional theory study of Li, Na, and Mg ...

    2016-6-9 · To extend the application range of these materials to ions beyond lithium-ions, we used van der Waals corrected density functional theory simulations to study the intercalation and diffusion of lithium (Li), sodium (Na), and magnesium (Mg) in the 2H structure of MoS 2 as a function of interlayer spacing. All three species exhibit an optimal ...

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  • Metabolic engineering of Escherichia coli for poly(3 ...

    2015-11-20 · Poly(3-hydroxybutyrate) (PHB), have been considered to be good candidates for completely biodegradable polymers due to their similar mechanical properties to petroleum-derived polymers and complete biodegradability. Escherichia coli has been used to simulate the distribution of metabolic fluxes in recombinant E. coli producing poly(3-hydroxybutyrate) (PHB).

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  • Screening, diagnosis and treatment of iron deficiency

    2018-10-12 · Study Study design and duration No. of patients treated Key inclusion criteria Dosing regimen Single dose of iron used Administration method Mean total iron dose Total no. of injections in FCM group; FAIR-HF (Anker et al.) 22. Double-blind, placebo-controlled, randomized; 24 weeks. FCM: 304. Placebo: 155. NYHA class II (LVEF ≤40%) or III ...

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  • Establishment of a method to determine the magnetic ...

    2012-12-6 · Ferric chloride was use to analyze the iron content. Potassium thiocyanide colorimetry showed a good linear relationship and was used to determine ferric ions in MNPs treated with hydrochloride acid at 100°C. Different concentration of 0.5 ml ferric chloride was mixed with an equal volume of 2N hydrochloride acid and boiled for 10 min.

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  • Design strategies of hybrid metallic nanoparticles for ...

    2016-8-17 · In this study, an evaporative vapor-phase polymerization approach was employed to fabricate vertically aligned poly(3, 4-ethylenedioxythiophene) (PEDOT) nanofibers on the surface of carbon cloth (CC). Optimized reaction conditions can obtain well distributed and uniform layers of high-aspect-ratio PEDOT nanofibers on CC.

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