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Removal of direct dyes by coagulation: The performance of preformed polymeric aluminum species
Shi, Baoyou; Li, Guohong; Wang, Dongsheng; Feng, Chenghong; Tang, Hongxiao
2007-05-08
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
Volume143Issue:1Pages:567-574
AbstractRemoval of three direct dyes (Direct Black 19, Direct Red 28, and Direct Blue 86) by coagulation with three different Al based coagulants was investigated. The main purpose of this paper is to examine the coagulation features of polymeric aluminum coagulants in treatment of dye-polluted waters and the emphasis was placed on the roles of preformed Al species, particularly Al-13. The performance of Al-13 in coagulation of dyes was observed through jar tests by comparing traditional Al salt, polyaluminum chloride (PACI), and purified Al-13. The results showed that under most cases All 3 had significantly higher efficiency in removal of direct dyes than traditional Al salt and commercial PAC] with the exception of Direct Red 28 removal under high pH range. The coagulation of direct dyes could be greatly affected by pH. Reducing pH was favorable for preformed Al species in a broad pH range. For traditional Al coagulant, efficient dye removal only occurred in a relatively narrow pH range of near 6.0. The outstanding coagulation behavior of Al-13 Could be ascribed to its high charge neutralization ability, relative stability and potential self-assembly tendency. (C) 2006 Elsevier B.V. All rights reserved.
Department环境水质学国家重点实验室
KeywordDirect Dye Coagulation Al Speciation Polyaluminum Chloride Al-13
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Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/22588
Collection环境水质学国家重点实验室
Recommended Citation
GB/T 7714
Shi, Baoyou,Li, Guohong,Wang, Dongsheng,et al. Removal of direct dyes by coagulation: The performance of preformed polymeric aluminum species[J]. JOURNAL OF HAZARDOUS MATERIALS,2007,143(1):567-574.
APA Shi, Baoyou,Li, Guohong,Wang, Dongsheng,Feng, Chenghong,&Tang, Hongxiao.(2007).Removal of direct dyes by coagulation: The performance of preformed polymeric aluminum species.JOURNAL OF HAZARDOUS MATERIALS,143(1),567-574.
MLA Shi, Baoyou,et al."Removal of direct dyes by coagulation: The performance of preformed polymeric aluminum species".JOURNAL OF HAZARDOUS MATERIALS 143.1(2007):567-574.
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