Compound bioflocculant and polyaluminum chloride in kaolin-humic acid coagulation: Factors influencing coagulation performance and floc characteristics

被引：37

作者：

Li, Ruihua ^{[1
]}

Gao, Baoyu ^{[1
]}

Huang, Xin ^{[1
]}

Dong, Hongyu ^{[1
]}

Li, Xiaochen ^{[1
]}

Yue, Qinyan ^{[1
]}

Wang, Yan ^{[1
]}

Li, Qian ^{[1
]}

机构：

[1] Shandong Univ, Sch Environm Sci & Engn, Shandong Key Lab Water Pollut Control & Resource, Jinan 250100, Shandong, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2014年 / 172卷

关键词：

Compound bioflocculant; Coagulation performance; pH; Fractal dimension; ALUMINUM SULFATE; DUAL-COAGULANT; SOLUTION PH; BREAKAGE; POLYMER; SIZE; FLOCCULATION; STRENGTH; SUSPENSIONS; MECHANISMS;

D O I：

10.1016/j.biortech.2014.08.126

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The objective of this study was to investigate the influence of coagulant dosage and pH on coagulation performance and floc properties using polyaluminum chloride (PAC) and compound bioflocculant (CBF) dual-coagulant in kaolin-humic acid (HA) treatment. Results showed that as PAC dosage rose, comparatively better coagulation efficiencies and floc characteristics were achieved due to stronger charge neutralization and sweeping effect. Addition of CBF could enhance coagulation performance and floc properties, including size, strength and recoverability, except fractal dimension. Solution pH had a significant effect on coagulation efficiencies and flocs formation. Under acidic condition, flocs showed higher strength and recoverability but lower fractal dimension, where charge neutralization was the foremost mechanism. More compact flocs were generated under alkaline condition due to the sweeping effect of hydrolyzed Al species. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：8 / 15

页数：8

共 29 条

[11] Effects of compound bioflocculant on coagulation performance and floc properties for dye removal [J].

Huang, Xin ;

Bo, Xiaowen ;

Zhao, Yanxia ;

Gao, Baoyu ;

Wang, Yan ;

Sun, Shenglei ;

Yue, Qinyan ;

Li, Qian .

BIORESOURCE TECHNOLOGY, 2014, 165 :116-121

[12] Breakage, regrowth, and fractal mature of natural organic matter flocs [J].

Jarvis, P ;

Jefferson, B ;

Parsons, SA .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2005, 39 (07) :2307-2314

[13] A review of floc strength and breakage [J].

Jarvis, P ;

Jefferson, B ;

Gregory, J ;

Parsons, SA .

WATER RESEARCH, 2005, 39 (14) :3121-3137

[14] Floc structural characteristics using conventional coagulation for a high doc, low alkalinity surface water source [J].

Jarvis, Peter ;

Jefferson, Bruce ;

Parsons, Simon A. .

WATER RESEARCH, 2006, 40 (14) :2727-2737

[15] Flocculation activity of novel ferric chloride-polyacrylamide (FeCl3-PAM) hybrid polymer [J].

Lee, Khai Ern ;

Teng, Tjoon Tow ;

Morad, Norhashimah ;

Poh, Beng Teik ;

Mahalingam, Mohanapriya .

DESALINATION, 2011, 266 (1-3) :108-113

[16] Characterization of floc size, strength and structure under various coagulation mechanisms [J].

Li, Tao ;

Zhu, Zhe ;

Wang, Dongsheng ;

Yao, Chonghua ;

Tang, Hongxiao .

POWDER TECHNOLOGY, 2006, 168 (02) :104-110

[17] Fate of hydrolyzed Al species in humic acid coagulation [J].

Lin, Jr-Lin ;

Huang, Chihpin ;

Dempsey, Brian A. ;

Hu, Jing-Yi .

WATER RESEARCH, 2014, 56 :314-324

[18] Production and characterization of an intracellular bioflocculant by Chryseobacterium daeguense W6 cultured in low nutrition medium [J].

Liu, WeiJie ;

Wang, Kai ;

Li, BaoZhen ;

Yuan, HongLi ;

Yang, JinShui .

BIORESOURCE TECHNOLOGY, 2010, 101 (03) :1044-1048

[19] Effect of polyacrylamide polymers on floc size and rheological behaviour of kaolinite suspensions [J].

Nasser, M. S. ;

James, A. E. .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2007, 301 (1-3) :311-322

[20] Preparation and characterization of composite bioflocculants in comparison with dual-coagulants for the treatment of kaolin suspension [J].

Ni, Fan ;

Peng, Xianjia ;

He, Jinsong ;

Yu, Lian ;

Zhao, Jing ;

Luan, Zhaokun .

CHEMICAL ENGINEERING JOURNAL, 2012, 213 :195-202

← 1 2 3 →