Results 201 to 210 of about 8,353 (223)

Breakage and re-growth of flocs formed by alum and PACl

Powder Technology, 2009
Abstract The efficiency of coagulation and flocculation can be significantly improved through flocs breakage and re-growth under appropriate conditions. Investigation was carried out to examine the formation, breakage and re-growth of flocs formed by kaolin or the mixture of kaolin and humic acid with aluminum sulfate (‘alum’) or polyaluminum ...
Wenzheng Yu, Guibai Li, Yongpeng Xu, Xue Yang   +3 more
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Distinct coagulation mechanism and model between alum and high Al13-PACl

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2007
The conventional alum and polyaluminum chloride (PACl) with high content of Al13 were selected to study the interaction between coagulants and particles in suspension. Particulate silica microspheres were used for the investigation with emphasis on the surface adsorption behavior at a constant pH of 6.5.
Xiaohong Wu, Xiaopeng Ge, Dongsheng Wang, Hongxiao Tang   +3 more
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Membrane fouling by alginate in polyaluminum chloride (PACl) coagulation/microfiltration process: Molecular insights

Separation and Purification Technology, 2020
Abstract While polyaluminum chloride (PACl) coagulation- microfiltration (MF) process is one of the most popular methods for surface water treatment, the fouling mechanism underlying this process has not well explored. In this study, sodium alginate (SA) was used as the model organic matter.
Jiaheng Teng, Yifeng Chen, Guangcai Ma, Huachang Hong, Tianyu Sun, Bao-Qiang Liao, Hongjun Lin   +6 more
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[Speciation and characterization of interaction of PACls with sulfate].

Huan jing ke xue= Huanjing kexue, 2003
The interaction of sulfate with various PACl was investigated by using Ferron assay, chemical analysis and SEM. The experimental results showed that the basicity (B = [OH]/[Al]) exhibited significant role in the PACl-sulfate reaction. It indicated different species in various PACl under different reaction pathway with sulfate.
Huaming, Jiang, Dongsheng, Wang, Lianjun, Wang   +2 more
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Studies on Oilfield Wastewater Purification with PACL and DMDAAC Polymer Flocculant

2018
Polyaluminum chloride (PACl) coagulant and poly (dimethyl diallyl ammonium chloride-AM) flocculants were applied to purify the wastewater from Zhanazhol oilfield, Kazakhstan. Water quality measurement showed that suspended solids content (SS) and particles size in wastewater were in excess of the reinjection standard for Kazakhstan.
Guoliang Liu, Fusheng Zhang, Ning Qi, Dongshi Geng, Suobing Zhang, Junhan Ma, Jing Xu, Heng Song, Mingyue Cui   +8 more
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Quantitative Model of Coagulation with Inorganic Polymer Flocculant PACl: Application of the PCNM

Journal of Environmental Engineering, 2006
In this paper, a quantitative model of coagulation with inorganic polymer flocculants (IPFs) was investigated, using polyauminum chloride (PACl) as an example. Application of a modified precipitation charge-neutralization model (M-PCNM) was examined and discussed, including variation of dose, pH, and B value on the resulting coagulation diagram.
Dongsheng Wang, Hongxiao Tang
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[Breakage and regrowth of flocs coagulation with polyaluminum chloride (PACl)].

Huan jing ke xue= Huanjing kexue, 2008
The conventional jar test and the monitoring technique of floc size in line were employed to investigate the breakage and regrowth of the flocs formed by PACl. It was found that the breakage and regrowth of flocs varied with coagulation zones. The flocs formed in stabilization zone were of high strength and difficult to break, and could regrow better ...
Zhong-Guo, Zhang, Zhao-Kun, Luan, Ying, Zhao, Jian-Hua, Cui, Zhao-Yang, Chen, Yan-Zhong, Li   +5 more
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Effect of pre-ozonation on coagulation with IPF–PACls: Role of coagulant speciation

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2007
Abstract Inorganic polymer flocculants (IPFs)–polyaluminum chloride (PACl) with various B (OH/Al ratio) values were synthesized and applied to examine the effect of ozone on coagulation. Formation and performance of flocs during coagulation processes were monitored using photometric dispersion analyzer (PDA).
Hailong Liu, Dongsheng Wang, Min Wang, Hongxiao Tang, Min Yang   +4 more
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[Physical and fractal properties of polyaluminum chloride-humic acid (PACl-HA) flocs].

Huan jing ke xue= Huanjing kexue, 2008
The powder of polyaluminum chloride-humic acid (PACl-HA) flocs was prepared by cryo-freezing-vacuum-drying method. These flocs were characterized by X-ray diffractometry, FTIR spectroscopy, elementary analysis and surface area determination. The results show that these flocs are amorphous, mainly composed by elements of C, O, Al, and reserve some ...
Yi-Li, Wang, Jie, Liu, Bai-Yu, Du
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Factor Analysis of MCMI-II and PACL Basic Personality Scales in a College Sample

Journal of Personality Assessment, 1991
This study examined factor dimensions common to the eight basic personality scales of the Millon Clinical Multiaxial Inventory-II (MCMI-II; Millon, 1987) and Personality Adjective Check List (PACL; Strack, 1987, 1990). Subjects were 140 college students (65 men and 75 women).
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