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study on optimal conditions of poly ferric chloride features

  • Study on optimal conditions of poly ferric chloride

    2021-1-1 · Based on Table 3, at PFC conditions, it can be seen that the pH from 7.6 to 10.4 requires less amount of NaOH (approximately 9 ml of 1 N NaOH per 1 L of sample water) to balance than in optimal conditions of PAC flocculation. The amount of NaOH used increases the pH …

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  • Study on optimal conditions of poly ferric chloride

    Study on optimal conditions of poly ferric chloride (PFC) dosage treating tannery wastewater. Tannery wastewater was considered as a heavily industrial wastewater with very high amount of wastewater discharged everyday but not well-treating. The tanning wastewater from producing process contains various high strength toxic chemicals which could do ...

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  • Study on the degradation behavior and mechanism

    A kind of poly (lactic acid) (PLA) material with rapid degradation capacity was prepared with ferric chloride (FeCl 3 ), it's degradation rate was more than 10 times higher than that of pure PLA. FeCl 3 forms stable chemical bonds with C and O, which weakens the ester bond …

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  • A study on the multifunction of ferrous chloride in

    2009-9-30 · In this study, the multifunction of ferrous chloride in membrane preparation was investigated. Flat sheet membranes were developed using poly(vinylidene fluoride) (PVDF) and N,N-dimethylacetamide (DMAc) as membrane material and solvent, respectively, the specific details of membrane preparation and characterization are given in this paper.

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  • Preparation and coagulation performance of poly

    2011-3-1 · Poly-ferric-aluminum-silicate-sulfate (PFASS) with various (Al + Fe)/Si molar ratios was prepared from fly ash to evaluate their coagulation efficiencies in oily wastewater, and the structure and morphology of which were characterized by infrared spectra (FTIR), X-ray diffraction (XRD) and transmission electron microscopy (TEM).Therefore, the results indicate that 16:1 (Al + Fe)/Si mole …

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  • Study on optimal conditions and adsorption kinetics of ...

    2013-5-27 · Study on optimal conditions and adsorption kinetics of copper from water by collodion membrane cross-linked poly-γ-glutamic acid Xiangting Wu*,†, Aiyin Wang **, Xiaojie Zheng ***, Guoxing Li**, Xinjiao Dong *, and Mingjiang Wu* *College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, P. R. China

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  • Simultaneous presence of poly titanium chloride

    2020-8-1 · As In the optimal coagulant dosage, As(V) removal efficiency by PTC coagulant was 93.46 % and in simultaneous presence of coagulant-nanocomposite (PTC + Fe 2 O 3-Mn 2 O 3), As(V) removal efficiency increased to 99.96 % in optimal conditions and the amount of residual As(V) (Fig. 4b) was less than 0.1 μg/L. which was below As limits for drinking water in accordance with the WHO guideline (10 μg/L) . However, in the absence of nanocomposite, the residual As(V) in optimal conditions …

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  • Novel insight into sludge dewaterability mechanism

    2020-3-1 · Response surface methodology experiments found that the optimal operating conditions were at an AMD temperature of 42.6 °C, an AMD reaction time of 240.00 min, a PAFC dose of 150.00 mg/g dry solid, and filter pressure of 5.37 MPa. Under these optimal conditions, the water content of the dewatered cake was reduced by 54.54 wt%.

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  • Characterization and coagulation–flocculation

    2016-1-1 · Thus, poly-ferric chloride (PFC), poly-ferric sulfate (PFS) have been developed worldwide since the 1960s . They are applied in the treatment of both municipal and industrial wastewater , . The main method which is used to prepare composite coagulants is through adding other additive compounds to inorganic coagulants, and so their coagulation ...

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  • Preparation and coagulation performance of poly

    2011-3-1 · Poly-ferric-aluminum-silicate-sulfate (PFASS) with various (Al + Fe)/Si molar ratios was prepared from fly ash to evaluate their coagulation efficiencies in oily wastewater, and the structure and morphology of which were characterized by infrared spectra (FTIR), X-ray diffraction (XRD) and transmission electron microscopy (TEM).Therefore, the results indicate that 16:1 (Al + Fe)/Si mole …

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  • Study on optimal conditions and adsorption kinetics of ...

    2013-5-27 · Study on optimal conditions and adsorption kinetics of copper from water by collodion membrane cross-linked poly-γ-glutamic acid Xiangting Wu*,†, Aiyin Wang **, Xiaojie Zheng ***, Guoxing Li**, Xinjiao Dong *, and Mingjiang Wu* *College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, P. R. China

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  • Fabrication and characterization of poly(ferric chloride ...

    2014-4-2 · Derived mainly from processes including bleaching, rinsing, dyeing, printing and starching, the printing, and dyeing, wastewater was characterized by high chromaticity, large emission, complex composition, high levels of organic pollutants, and poor biodegradability [1–3].Due to the presence of toxic (hazardous) substances in dyeing wastewater and its severe contamination to the environment ...

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  • Evaluation of optimum conditions for pachyman

    2016-9-23 · This study aimed to optimize the preparation conditions of pachyman (PHY)-loaded poly(d,l-lactic acid) (PLA) (PHYP) nanospheres by response surface methodology, explore their characteristics, and assess their effects on splenic lymphocytes.Double emulsion solvent evaporation was used to synthesize PHYP nanospheres, and the optimal preparation conditions were identified as a …

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  • Ferrics, Alums & Polymers Polyethylene ... - Poly

    2016-7-24 · The results showed that after using the poly aluminum chloride, ferrous sulfate, ferric chloride and aluminum sulfate coagulants, in the turbidity of 200, 100, 50, 20, 10 NTU, the pH level have reduced in a way that by increasing each mg/l poly aluminum chloride, ferrous sulfate, ferric chloride about 0.01 unit pH have reduced.

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  • ISSN: 0975-766X CODEN: IJPTFI Available Online through ...

    2019-7-23 · Optimal Corrosion Control Treatment Evaluation Technical Recommendations for Primacy Agencies and Public Water Systems Office of Water (4606M) EPA 816-B-16-003

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  • Optimal Corrosion Control Treatment Evaluation

    AbstractCoagulation is one of the effective pretreatment stages in membrane filtration of wastewaters to produce clean water. Using a suitable coagulant, one can mitigate membrane fouling. Membrane fouling is a process where particles deposit onto a membrane surface or into membrane pores in a way that degrades the membrane’s performance. Research in this area is currently being focused on ...

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  • [PDF] Development of a new poly silicate ferric

    2021-3-24 · Poly(p-phenylenediamine- co–o-aminophenol) nanostructure thin film [PpPDoAP]TF was synthesized and prepared as a thin film with ≅ 100 ± 2 nm using the spin-coating method. Different characterization techniques for [PpPDoAP]TF like FTIR, UV–Vis spectroscopy, and optical properties have been studied. The resulted x-ray diffraction (XRD) and scanning electron microscope (SEM) …

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  • Fabrication, characterization and optical properties of ...

    In this work, a series of experiments were carried out to study the kinetic inhibition performance of N-butyl-N-methylpyrrolidinium tetrafluoroborate ([BMP][BF 4]), poly(N-vinylcaprolactam) (PVCap) and compound inhibitor systems on methane hydrate from both macroscopic and microscopic perspectives.In the macroscopic experiments, the influence of the concentration, the ratio of inhibitors, the ...

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  • Fabrication and characterization of poly(ferric chloride ...

    2014-4-2 · But the maximal and optimal -35 value is not achievable for zeta potential of the formed -40 flocs due to its continuous increase during coagulation 10 20 30 40 50 60 process using three flocculants. ... This study showed and polyferric chloride-polyamine composite coagulant for syn- conclusively evidence for a synergistic effect thetic dying ...

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  • Structure–conductivity correlation in ferric chloride ...

    2006-7-5 · Poly(3-hexylthiophene) (P3HT) matrix has been chemically doped (redox doping) by ferric chloride (FeCl 3) with different molar concentrations to get P3HT–FeCl 3 charge-transfer complexes. The effect of redox doping on photo-physical, structural, and morphological properties and dc electrical conductivity of P3HT matrices has been examined.

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  • A study of polypyrrole/poly(N-isopropylacrylamide-co ...

    A study of polypyrrole/poly ... (LCST) for poly(NP-35AM) copolymer measured under identical conditions. Flocculation occurred due to segment–segment attraction of the sheaths under worse than ϑ-solvency conditions. ... to core radius (a) ratio of δ a ∽0.30 when ferric chloride is the oxidant.

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  • Preparation and Characteristics of Polyaluminium

    Clay-brine process employing activated clay, NaCl, HCl, and HF as raw materials is the primarily advanced technology to synthesize cryolite in the present industrial grade. However, plenty of byproducts of fluorine-containing waste HCl at the concentration of about 10%~12% could not be utilized comprehensively and are even hazardous to the environment.

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  • Advanced redox flow fuel cell using ferric chloride as ...

    2017-7-11 · Under these optimal conditions, the maximum power density reached 3.4 mW/cm 2 at cell reaction temperature of 25°C. The following tests on the usage of Lewis acids would refer to these conditions.

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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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  • ISSN: 0975-766X CODEN: IJPTFI Available Online through ...

    2016-7-24 · The results showed that after using the poly aluminum chloride, ferrous sulfate, ferric chloride and aluminum sulfate coagulants, in the turbidity of 200, 100, 50, 20, 10 NTU, the pH level have reduced in a way that by increasing each mg/l poly aluminum chloride, ferrous sulfate, ferric chloride about 0.01 unit pH have reduced.

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  • Optimizing Chemical Phosphorus Removal

    2013-6-26 · Ferric Chloride FeCl 3 M.W. = 162.3 Metal hydroxides removes alkalinity Poly Aluminum Chloride Cl Al n Cl (3n-m) (OH) m Al 12 12 (OH) 24 Metal hydroxides none Ferrous sulfate (pickle liquor) Fe 2 SO 4 Metal hydroxides Removes alkalinity Lime CaO, Ca(OH) 2 …

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  • Evaluation of optimum conditions for pachyman

    Evaluation of optimum conditions for pachyman encapsulated in poly(D,L-lactic acid) nanospheres by response surface methodology and results of a related in vitro study Sisi Zheng, Li Luo, Ruonan Bo, Zhenguang Liu, Jie Xing, Yale Niu, Yuanliang Hu, Jiaguo Liu, Deyun Wang Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University ...

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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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  • Effect of film thickness and crystallinity on the ...

    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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  • Optimization and economic evaluation of modified ...

    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%.

    Get Price
  • Study on the effect of chitosan conditioning on

    2017-7-11 · Under these optimal conditions, the maximum power density reached 3.4 mW/cm 2 at cell reaction temperature of 25°C. The following tests on the usage of Lewis acids would refer to these conditions.

    Get Price
  • Advanced redox flow fuel cell using ferric chloride

    Evaluation of optimum conditions for pachyman encapsulated in poly(D,L-lactic acid) nanospheres by response surface methodology and results of a related in vitro study Sisi Zheng, Li Luo, Ruonan Bo, Zhenguang Liu, Jie Xing, Yale Niu, Yuanliang Hu, Jiaguo Liu, Deyun Wang Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University ...

    Get Price
  • Evaluation of optimum conditions for pachyman

    2019-7-23 · Optimal Corrosion Control Treatment Evaluation Technical Recommendations for Primacy Agencies and Public Water Systems Office of Water (4606M) EPA 816-B-16-003

    Get Price
  • Optimal Corrosion Control Treatment Evaluation

    The versatility of RAFT polymerization is illustrated by the control of the polymerization of vinylbenzyl chloride (VBC), a highly functional monomer, with the aim of designing silica core–poly(VBC) shell nanoparticles. Optimal conditions for the control of VBC polymerization by RAFT are first established, followed by the use of the ...

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  • The synthesis of well-defined poly(vinylbenzyl

    2013-6-25 · Beilstein J. Org. Chem. 2013, 9, 1226–1234. 1228 Scheme 1: RAFT polymerization and silica-supported RAFT polymerization of vinylbenzyl chloride (VBC). Figure 1: Evolution of number-average molecular weight (Mn) and Mw/Mn values of the poly(VBC) chains obtained by RAFT polymeriza- tion with PABTC as CTA and thermal autoinitiation. Dashed lines depict the theoretical …

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  • The synthesis of well-defined poly(vinylbenzyl chloride ...

    2021-5-20 · Here, we show that the PET-hydrolytic activity of wild-type PET2 is lower than that of IsPETase under optimal operation conditions (MHET/TPA yield, …

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  • Improving the Transport and Antifouling Properties of

    2019-8-9 · Poly(vinyl chloride) (PVC)/SiO2 nanocomposite hollow-fiber membranes with different nano-SiO2 particle loadings (0–5 wt %) were fabricated using the dry-jet wet-spinning technique. Effects of SiO2 nanoparticles on the morphology of the prepared hollow-fiber membranes were investigated using scanning electron microscopy. Transport and antifouling properties of the fabricated membranes were ...

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  • Effect of film thickness and crystallinity on the ...

    2020-10-9 · A new class of polymeric sorbents based on deep eutectic solvents (DESs) is introduced. These materials are obtained from simple and inexpensive precursors via an energy-efficient process. The primary benefit of these sorbents is that they possess the unique characteristics of DESs and porous materials simultaneously. Moreover, the possibility of tailoring deep eutectic solvents allows ...

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  • Poly (deep eutectic solvents) as a new class of ...

    2012-11-11 · The design and preparation of novel photoreactive poly-N-(4-benzoylphenyl)methacrylamide-based nanoparticles (NPs) are reported herein. The starting photoreactive monomer, N-4-benzoylphenyl methacrylamide, was prepared by amidation of the photoreactive species 4-aminobenzophenone with methacryloyl chloride in the presence of …

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  • Poly- N -(4-benzoylphenyl)methacrylamide

    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%.

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

    At optimal conditions (initial pH 3, 7 g adsorbent, and contact time 120 min) maximum Cr(VI) removal was estimated to reach 68.1%. For the C/DAFM, poly aluminum chloride (PAC), and FeCl 3 were used as coagulants and the dose was determined by jar test. In optimal conditions of pH 7.5, pressure of 3 bars, and flotation time of 5 min, a maximum ...

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  • Comparison study of biosorption and coagulation/air ...

    Evaluation of optimum conditions for pachyman encapsulated in poly(D,L-lactic acid) nanospheres by response surface methodology and results of a related in vitro study Sisi Zheng, Li Luo, Ruonan Bo, Zhenguang Liu, Jie Xing, Yale Niu, Yuanliang Hu, Jiaguo Liu, Deyun Wang Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University ...

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  • Evaluation of optimum conditions for pachyman

    We propose that it provided optimal conditions for the early replication of nucleic acids and the RNA world. We repeated a famous prebiotic experiment, the poly-uridylic acid-instructed synthesis of polyadenylic acid from adenylic acid imidazolides in artificial sea ice, simulating the dynamic variability of real sea ice by cyclic temperature ...

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  • Ice and the origin of life - PubMed

    The versatility of RAFT polymerization is illustrated by the control of the polymerization of vinylbenzyl chloride (VBC), a highly functional monomer, with the aim of designing silica core–poly(VBC) shell nanoparticles. Optimal conditions for the control of VBC polymerization by RAFT are first established, followed by the use of the ...

    Get Price
  • Characteristics of Polyaluminum Chloride (PAC) Coagulant ...

    2010-11-22 · (Poly Aluminum Chloride, PAC) both in shape structural features, flocculation mechanism, or floccula-tion with the performance aspects of the traditional aluminum rally there the distinction between the na-ture and form of proposed. A1. 13. is the best …

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  • Fabrication of device with poly( N

    2017-10-5 · In this study, we grafted bromo-terminated poly(N-isopropylacrylamide) (PNIPAAm) brushes onto thin gold films deposited on silicon, and then reacted with NaN3 to produce azido-terminated PNIPAAm brushes. A probe sequence of single-stranded DNA (ssDNA) with a 4-pentynoic acid succinimidyl ester unit was grafted onto the azido-terminated PNIPAAm brushes through a click …

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  • Demographic characteristics, clinical features, and ...

    2016-4-18 · Maple syrup is produced from the sap collected from the maple tree. Boiling of the sap produces a cocktail of different compounds that are only present in the syrup. (© iStock.com) Polyphenols found in maple syrup exert a neuroprotective effect that could protect the structure and function of motor neurons, a study in worms has found ...

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  • Maple syrup polyphenols may protect against ...

    2019-10-8 · Poly-aluminum chloride (PACl) is effective for controlling arsenate concentration than the . 74 . above-mentioned coagulants because PACl s more removearsenate than do conventional . 75 . coagulants, such as aluminum sulfate and chloride, at both acidic and alkaline pH, as well as at . 76 . neutral pH Fan et al. 2003

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  • Characteristics and Components of Poly-Aluminum

    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%.

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

    Evaluation of optimum conditions for pachyman encapsulated in poly(D,L-lactic acid) nanospheres by response surface methodology and results of a related in vitro study Sisi Zheng, Li Luo, Ruonan Bo, Zhenguang Liu, Jie Xing, Yale Niu, Yuanliang Hu, Jiaguo Liu, Deyun Wang Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University ...

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  • Evaluation of optimum conditions for pachyman

    2017-7-31 · Chloride is reported to play a significant role in corrosion reactions, products and kinetics of ferrous metals. To enhance the understanding of the effects of soil environments, especially the ...

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  • Effects of chloride ions on corrosion of ductile iron

    2019-4-5 · However, in this case, the optimal pH for a mixture of HS + COM (pH 5.0–6.2) related to optimal pH ranges for the coagulation of HS (5.0–6.0) and COM peptides/proteins (5.0–6.7). The impact on coagulation of interactions between AOM and other impurities present in raw water are detailed by Pivokonský et al..

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  • On the importance of pH value in coagulation |

    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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  • Characteristics and Components of Poly-Aluminum

    2019-10-8 · Poly-aluminum chloride (PACl) is effective for controlling arsenate concentration than the . 74 . above-mentioned coagulants because PACl s more removearsenate than do conventional . 75 . coagulants, such as aluminum sulfate and chloride, at both acidic and alkaline pH, as well as at . 76 . neutral pH Fan et al. 2003

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  • A methodology for optimising the removal of

    For this water the optimal dose-pH for ferric chloride (selected point), based on the results shown in Figures 7-9 and without any pH adjustment by hydroxide or acid addition, was 7.41 mgFe/L (commercial ferric chloride dosage of 55 mg/L) and pH 6.22.

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  • SILICA REMOVAL FROM NEWSPRINT MILL EFFLUENTS

    2014-7-28 · alum, or ferric chloride, to treat pulp and paper mill effluents [12]. In this case, coagulation with alum has been proved to be more effective for silica removal than ferric chloride. Coagulation and ultrafiltration (UF) have been also successfully used in brackish water RO treatment to avoid silica problems [13, 14]. Alum, ferric chloride

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  • A Polyextreme Hydrothermal System Controlled by

    2019-1-17 · A spectrophotometric study of iron(III) hydrolysis in aqueous solutions to 200 °C. Chem. Geol. 2008, 249, 227–235. 10.1016/j.chemgeo.2007.12.006. [Google Scholar] Kanno H.; Hiraishi J. A Raman study of aqueous solutions of ferric nitrate, ferrous chloride and ferric chloride in …

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

    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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  • Co-delivery of doxorubicin and recombinant

    In this study, the optimized growth conditions of MTB AMB-1 were investigated for enhancing both bacterial growth and production of BMs. The results showed that the optimal conditions of culture are an oxygen concentration of 4.0%, a pH value of 7.0, 20 μmol/L of ferrous sulfate, 800 mg/L of sodium nitrate, and 200 mg/L of succinic acid.

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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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  • Short poly(A) tails are a conserved feature of highly ...

    2017-11-6 · Using these same reporters, we analyzed steady-state poly(A) tail lengths and observed that transcripts with high percentages of optimal codons accumulated with relatively short poly(A) tails ...

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  • Effects of Homologous Phosphoenolpyruvate

    2011-2-1 · INTRODUCTION. Ralstonia eutropha H16 is a Gram-negative betaproteobacterium that serves as a model organism to investigate the hydrogen-based chemolithoautotrophy and the metabolism of poly(3-hydroxybutyrate) (PHB) and other polyesters. When cells are cultivated under imbalanced growth conditions, PHB is accumulated and occurs as insoluble granules in the cytoplasm to serve as …

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