PMID- 21295910 OWN - NLM STAT- MEDLINE DCOM- 20110531 LR - 20110228 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 187 IP - 1-3 DP - 2011 Mar 15 TI - Effect of aging period on the characteristics and coagulation behavior of polyferric chloride and polyferric chloride-polyamine composite coagulant for synthetic dying wastewater treatment. PG - 413-20 LID - 10.1016/j.jhazmat.2011.01.044 [doi] AB - In this paper, a new composite inorganic-organic coagulant (PFC-EPI-DMA) was prepared by polyferric chloride (PFC) and epichlorohydrin-dimethylamine (EPI-DMA) under a given EPI-DMA/Fe and OH/Fe molar ratio. In comparison with PFC, the Fe (III) species and zeta potential of PFC-EPI-DMA were measured. Then their coagulation performance and coagulation kinetics for treating synthetic reactive dying wastewater were investigated. The results showed that the content of Fe(a) and Fe(b) in PFC-EPI-DMA and PFC coagulants decreased with increasing aging period. Compared to PFC, PFC-EPI-DMA had higher content of Fe(a) but lower content of Fe(b) and Fe(c). The zeta potentials of two coagulants decreased with increasing aging period within all tested pH range. For the treatment of reactive red 24, the color removal efficiency treated by PFC-EPI-DMA decreased, while that treated by PFC remained almost constant with increasing aging period. However, the color removal efficiencies of reactive blue 14 treated by two coagulants both decreased with increasing aging period. The results of floc aggregation process confirmed that with increasing aging period, the orders of floc growth rate, ratio and TWV treated by two coagulants were complicated. CI - Copyright (c) 2011 Elsevier B.V. All rights reserved. FAU - Gao, Baoyu AU - Gao B AD - School of Environmental Science and Engineering, Shandong University, No 27 Shanda South Road, Jinan 250100, PR China. baoyugao sdu@yahoo.com.cn FAU - Liu, Bin AU - Liu B FAU - Chen, Ting AU - Chen T FAU - Yue, Qinyan AU - Yue Q LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110118 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 RN - 0 (Coloring Agents) RN - 0 (Ferric Compounds) RN - 0 (Industrial Waste) RN - 0 (Polyamines) RN - 0 (polyferric chloride) SB - IM MH - Coloring Agents/*chemistry MH - Ferric Compounds/*chemistry MH - *Industrial Waste MH - Kinetics MH - Polyamines/*chemistry MH - *Textile Industry EDAT- 2011/02/08 06:00 MHDA- 2011/06/01 06:00 CRDT- 2011/02/08 06:00 PHST- 2010/06/20 00:00 [received] PHST- 2010/12/10 00:00 [revised] PHST- 2011/01/12 00:00 [accepted] PHST- 2011/02/08 06:00 [entrez] PHST- 2011/02/08 06:00 [pubmed] PHST- 2011/06/01 06:00 [medline] AID - S0304-3894(11)00066-5 [pii] AID - 10.1016/j.jhazmat.2011.01.044 [doi] PST - ppublish SO - J Hazard Mater. 2011 Mar 15;187(1-3):413-20. doi: 10.1016/j.jhazmat.2011.01.044. Epub 2011 Jan 18.