Value-added products from jarosite hazardous waste: A review
In addition, jarosite may be used as an iron-rich source to synthesize iron-based coagulants such as poly-ferric sulfate, poly-ferrous sulfate, poly-ferric chloride, poly-ferrous chloride, etc. Yuan et al. (2014) reported the synthesis of poly-ferric sulfate from sodium jarosite residue under optimum conditions at the reaction temperature above ...
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(PDF) Synthesis of Poly-Alumino-Ferric Sulphate
This work examines the potential of producing a poly-alumino-ferric sulphate (AMD-PAFS) coagulant from coal acidic drainage solutions. The co-precipitation of iron and aluminium is conducted at pH ...
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(PDF) Poly-ferric sulphate as superior coagulant: A review on
Ferric chloride, ferrous sulphate, and poly-ferric sulphate (PFS) are examples of iron-based coagulants that are highly available, and are beneficial in …
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Production of a Poly-ferric Sulphate Chemical Coagulant by Selective
The aim of this work was to produce a ferric sulphate rich solution from acidic coal mine drainage that could be used as coagulant. Precipitating the iron at pH 3.8, followed by dissolution in sulphuric acid, produced a coagulant consisting of 12.4% iron and 1.3% aluminium. Water treatment tests proved that this coagulant was as efficient as the …
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Poly-ferric sulphate as superior coagulant: A review on …
Ferric chloride, ferrous sulphate, and poly-ferric sulphate (PFS) are examples of iron-based coagulants that are highly available, and are beneficial in producing denser flocs, thereby …
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Synthesis, Characterization, and Coagulation of Polymeric Ferric Sulfate
Poly-phosphoric-ferric coagulant was derived from ferrous sulfate, by-product during the production of titanium dioxide pigment, by means of T. ferrooxidans oxidation.
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Preparation and performance of a high purity poly-aluminum chloride
The preparation process of high-purity PACl with calcium aluminum and bauxite is developed, and the production cost is lower than that of acid dissolving of aluminum hydroxide. The metal ions can be effectively removed from the liquid PACl solution at both room and high temperatures. The preparation process is adapted to a …
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Biological preparation and application of poly-ferric sulfate
A novel inorganic polymer flocculant, poly-ferric sulfate (BPFS) was prepared by oxidation of ferrous sulfate using domestic Thiobacillus ferrooxidans () under acid …
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Polyferric sulphate: Preparation, characterisation and application …
Several pre-polymerized inorganic coagulants such as poly-aluminum chloride, polymeric ferric chloride, and polymeric ferric sulfate (PFS) have been developed to prevent this downside and form the ...
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High-poly-aluminum chloride sulfate coagulants and their …
Abstract. High-poly-aluminum chloride sulfate (HPACS) coagulants with different [SO 4 2−]/[Al 3+] molar ratio (S) were prepared and proved to have high coagulation efficiency for the removal of humic acid and strong stability for storage and application.The results showed that the higher the SO 4 2− addition, the bigger the aluminum polymerization particles …
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Evaluating Enhanced Sulfate Reduction and Optimized Volatile …
Anaerobic reactors with ferric iron addition have been experimentally demonstrated to be able to simultaneously improve sulfate reduction and organic matter degradation during sulfate-containing wastewater treatment. In this work, a mathematical model is developed to evaluate the impact of ferric iron addition on sulfate reduction and organic carbon …
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Unraveling the role of polymeric ferric sulfate in promoting …
Mechanistic insights into the effect of poly ferric sulfate on anaerobic digestion of waste activated sludge. Water Res ... Q. Fu, D. Wang, Y. Chen, Y. Zhong. Insights into how poly aluminum chloride and poly ferric sulfate affect methane production from anaerobic digestion of waste activated sludge. Sci. Total Environ., 811 …
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Mechanistic insights into the effect of poly ferric sulfate on
Poly ferric sulfate (PFS), one of the typical inorganic flocculants widely used in wastewater management and waste activated sludge (WAS) dewatering, could be accumulated in WAS and inevitably entered in anaerobic digestion system at high levels. However, knowledge about its impact on methane production is virtually absent.
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Study on the preparation of polysilicate ferric flocculant and its
Huang et al. found that poly-ferric‑titanium-silicate-sulfate (PFTS) synthesized in the experiment had a good application effect in disperse dye and reactive dye wastewater treatment. ... Treatment of ferric sulfate waste solutions for the production of ammonium ferric sulfate dodecahydrate. Russ. J. Appl. Chem., 89 (2016), pp. 1341 …
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Effect of coagulation treatment on sludge dewatering performance
Coagulation is an extensive and effective pretreatment technology for improving sludge dewatering performance. In this study, polysilicate ferric (PSF), polysilicate aluminum ferric (PSAF), and polysilicate aluminum ferric magnesium (PSAFM) were prepared by copolymerization reaction, and their preparation conditions include pH, …
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Polyferric Sulfate Consumption Market: Exploring Trends and
Additionally, the report includes the latest insights on technology advancements, strategies, production and consumption trends, and market dynamics. ... Poly Ferric Sulfate Solution. Poly Ferric ...
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Mechanistic insights into the effect of poly ferric sulfate on
Poly ferric sulfate (PFS), one of the typical inorganic flocculants widely used in wastewater management and waste activated sludge (WAS) dewatering, …
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Insights into how poly aluminum chloride and poly ferric sulfate …
Poly aluminum chloride (PAC) and poly ferric sulfate (PFS) are widely used in wastewater treatment and sludge dewatering, resulting in their amounts being accumulated substantially in waste activated sludge (WAS). Till now, however, little …
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Insight into the roles of ferric chloride on short-chain fatty acids
Additionally, appropriate ferric chloride (FC) could promote the SCFAs accumulation, while poly ferric sulfate (PFS) inhibited the bioprocess. Iron/persulfate (PS ) system was proved to effectively enhance the SCFAs production while mechanism analysis revealed that the strong oxidizing radicals remarkably enhanced the solubilization and …
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Biological preparation and application of poly-ferric sulfate
A novel inorganic polymer flocculant, poly-ferric sulfate (BPFS) was prepared by oxidation of ferrous sulfate using domestic Thiobacillus ferrooxidans (T·f) under acid condition.The optimal conditions for the preparation were pH value of 1.5, (NH 4) 2 SO 4 dosage of 0.5 g/L, initial Fe 2+ concentration of 45g/L, inoculum 10%, rotating speed of …
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Unraveling the role of polyferric chloride in anaerobic digestion of
Cumulative methane production continued to rise over time until it stabilized on the 40th day, that is, complete anaerobic digestion was achieved. ... Mechanistic insights into the effect of poly ferric sulfate on anaerobic digestion of waste activated sludge. Water Res. (2021) ... Polymerized ferric sulfate (PFS) is widely employed in the ...
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Ferric Sulfate Market Size, Share, Demand, Growth Analysis, …
The global ferric sulfate market size was valued at USD 426.3 million in 2022 and is projected to reach USD 684.3 million by 2031, registering a CAGR of 5.4% during the forecast period (2023-2031). Ferric sulfate market share. SRCH55605DR. Buy Now.
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High-efficiency extraction of aluminum from low-grade kaolin via a
The poly-aluminum-ferric-sulfate (PAFS) coagulant was further obtained from the leachate, and its coagulation performance was evaluated by jar tests. It was found that the PAFS is highly effective under acid conditions, and shows the highest removal efficiency of 93.7% for Direct Blue 2B with a dosage of 140 mg/L.
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Immobilized Microbial Catalytic Oxidation Preparation and
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 …
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Preparation of Poly Aluminum-Ferric Chloride (PAFC) Coagulant …
Poly aluminum-ferric Chloride (PAFC) is a new type of high efficiency coagulant. In this study, high iron type gangue is used as a main raw material. It is calcined at 675 °C for 1 h and 3% CaF 2 is added to the calcined powder and reacted with 20% hydrochloric acid at 93 °C for 4 h. The leaching ratio of aluminum ions is 90% and that of …
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Preparation and coagulation performance of poly-ferric-aluminum
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 …
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Effect of coagulation treatment on sludge dewatering performance
PFS (10 mL) was diluted to 100 mL with deionized water. The effective concentration of PFS was determined according to Chinese national standard ≪Water treatment chemicals-Poly ferric sulfate≫ (GB/T 14591–2016). 2.3. Characterization of dewatering agents. The samples of liquid dewatering agents were freeze-dried and …
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Synthesis and Performance of PAFS Coagulant Derived from …
PAFS is developed based on poly-ferric sulphate and poly-aluminium sulphate (Chen et al., 2020). It is mainly trivalent aluminium, supplemented by trivalent iron as an inorganic ... retrieval processes of aluminium dross will reduce the burden of aluminium production industries in terms of waste generation, disposal cost, and …
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Insights into how poly aluminum chloride and poly ferric sulfate …
Poly aluminum chloride (PAC) and poly ferric sulfate (PFS) are widely used in wastewater treatment and sludge dewatering, resulting in their amounts being accumulated substantially in waste activated sludge (WAS). ... Insights into how poly aluminum chloride and poly ferric sulfate affect methane production from anaerobic …
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Xuran LIU | Doctor of Engineering | Hunan University, Changsha
Insights into how poly aluminum chloride and poly ferric sulfate affect methane production from anaerobic digestion of waste activated sludge. Article. Nov 2021; Wu Yanxin; Min Lu;
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