Characterization and coagulation–flocculation behavior of polymeric aluminum ferric sulfate (PAFS)

Zhu, Guocheng; Zheng, Huaili; Zhang, Zhi; Tshukudu, Tiroyaone; Zhang, Peng; Xiao, Xiang

doi:10.1016/j.cej.2011.10.008

Cited by 172 publications

(100 citation statements)

References 28 publications

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“…The superior of IPFs has been proved by their less sensitiveness to low temperatures, lower dosage required and wider pH range [25]. Recently, composite coagulants have received more attention in water treatment because they are more efficient than traditional coagulants in NOM removal and much cheaper than organic flocculants [26]. Composite coagulants are prepared mainly through adding other additive component, such as Al or Fe salt, polysilicic acid and organic polymer, producing a stable mixture with higher efficiency than individual coagulants [8,24,27].…”

Section: Introductionmentioning

confidence: 99%

Floc properties of polyaluminum ferric chloride in water treatment: The effect of Al/Fe molar ratio and basicity

Cao

Gao

Wang

et al. 2015

Journal of Colloid and Interface Science

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Section: Introductionmentioning

confidence: 99%

Floc properties of polyaluminum ferric chloride in water treatment: The effect of Al/Fe molar ratio and basicity

Cao

Gao

Wang

et al. 2015

Journal of Colloid and Interface Science

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“…In the present study, to obtain the preparation parameters achieving superior coagulation-flocculation performance, RSM based on the Box-Behnken design (BBD) was applied to optimize the preparation parameters, such as the molar ratios of Fe/Ti, P/Fe, and OH/Fe; NaClO 3 adding speed (u); and the most suitable combination of these variables for minimum residual turbidity (Zhang and Zheng 2009;Zhu et al 2011). Each variable was designated as the lower level, basic level, and upper level, which corresponded to −1, 0, and +1, respectively.…”

Section: Experimental Designmentioning

confidence: 99%

“…Sun et al prepared polyferric aluminum-silicate sulfate (PFASS) with various (Al + Fe)/Si, and revealed that the optimal (Al + Fe)/Si molar ratios for turbidity and COD removal differ at 12:1 and 16:1, respectively (Sun et al 2010). Zhu et al synthesized the composite coagulant polymeric aluminum ferric sulfate (PAFS), the result demonstrated the addition of Al 3+ as modifier into polyferric sulfate have enhanced the COD and turbidity removal efficiency successfully (Zhu et al 2011).…”

mentioning

confidence: 99%

Preparation and Characterization of a Composite Coagulant: Polyferric Titanium Sulfate

Chen

Zheng

Guo

et al. 2016

Water Air Soil Pollut

Self Cite

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In this study, a novel composite coagulant polyferric titanium sulfate (PFTS) was synthesized and the kaolin-fulvic acid simulated water was employed to verify the coagulation efficiency. To obtain the optimal conditions for preparing the composite coagulant, the parameters affecting the coagulation performance such as Ti/Fe, P/Fe, OH/Fe, and oxidizer dosage were evaluated by single factor experiments and response surface methodology. The structure and morphology of PFTS were investigated by some conventional methods and those affecting coagulation-flocculation behaviors such as coagulant dosage, water sample initial pH, were also examined. Flocs properties of PFTS were investigated by Mastersizer 2000. The results indicated that PFTS presented a porous and a compacted gel network structure, in which some major phase structure and chemical bonds were discovered. The jar tests demonstrated the superior coagulation performance at coagulant dosage of 20-30 mg/L and the optimum pH range of 7-8. The optimum synthetic conditions were Ti/Fe, P/Fe, OH/Fe molar ratio and oxidant adding speed of 0.13, 0.25, 0.29, and 4 mL/min, respectively. Under the optimal condition, the residual turbidity, (Dissolved organic matter) DOC removal and residual iron of 0.82, 53 %, and 0.08 mg/L, respectively, could be acquired by PFTS. The flocs analysis results manifested that the dominant mechanism in flocs growth is absorption-bridging and sweeping coagulation, while charge neutralization mechanisms is the primary in the formation of compact flocs.

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“…Nevertheless, these chemical coagulants have disadvantages, which include large volume of sludge resulting in huge disposal cost, not being effective in low-temperature water, and high procurement cost. Furthermore, aluminum-based coagulants are associated with Alzheimer disease in humans (Moraes 2004;Chen et al 2010;Zhu et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Perikinetics and sludge study for the decontamination of petroleum produced water (PW) using novel mucuna seed extract

2016

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In this study, Mucuna flagellipes seed extract was applied in the coagulation-flocculation of produced water (PW). Process parameters such as pH, dosage, and settling time were investigated. Process kinetics was also studied. Instrumental characterization of mucuna seed (MS), mucuna seed coagulant (MSC), and post effluent treatment settled sludge (PTSS) were carried out. The optimum decontamination efficiency of 95 % was obtained at 1 g/L MSC dosage, PW pH of 2, and rate constant of 0.0001 (L/g/s). Characterization results indicated that MS, MSC, and PTSS were of network structure, primitive lattice, and thermally stable. It could be concluded that MSC would be potential biomass for the treatment of produced water under the experimental conditions.

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Characterization and coagulation–flocculation behavior of polymeric aluminum ferric sulfate (PAFS)

Cited by 172 publications

References 28 publications

Floc properties of polyaluminum ferric chloride in water treatment: The effect of Al/Fe molar ratio and basicity

Floc properties of polyaluminum ferric chloride in water treatment: The effect of Al/Fe molar ratio and basicity

Preparation and Characterization of a Composite Coagulant: Polyferric Titanium Sulfate

Perikinetics and sludge study for the decontamination of petroleum produced water (PW) using novel mucuna seed extract

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