Characterization and application of poly-ferric-titanium-silicate-sulfate in disperse and reactive dye wastewaters treatment

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Characterization and application of poly-ferric-titanium-silicate-sulfate in disperse and reactive dye wastewaters treatment
	Huang, Xin; Wan, Yang; Shi, Baoyou; Shi, Jian; Chen, Huan; Liang, Huikai
刊名	CHEMOSPHERE
	2020-06
卷号	249 页码:1-10
关键词	Coagulation Hybrid coagulant Floc properties Dye wastewater
ISSN号	0045-6535
英文摘要	A novel coagulant poly-ferric-titanium-silicate-sulfate (PFTS) was synthesized and employed to treat two typical kinds of dye wastewaters-disperse blue and reactive yellow. The results indicated that PFTS with a Si/Fe molar ratio of 0.02 exhibited superior coagulation performance, especially under alkaline condition. The residual turbidity after coagulation by PFTS was only half of that after coagulation by polyferric-titanium sulfate (T-PSF). The sludge volume index was also reduced by PFTS compared to T-PSF in reactive dye treatment. Through the structure and morphology investigation of PFTS, it was found that new bonds of Si-O-Fe, Si-O-Ti and Fe-OH (Si-OH) were formed, and multi-branched structures and expanded surface area were generated. Additionally, compared with T-PSF, the floc strength and the floc size were also enhanced by PFTS, which was attributed to the polymerization between polysilicic acid and Fe/Ti which formed multi-branched structures, and finally adsorption and bridging ability of the coagulant was improved. Furthermore, the floc formed in reactive yellow wastewater treatment was larger and looser than that formed in disperse blue wastewater, with poorer strength and recovery ability, which can also interpret the better coagulation efficiency in disperse dye water treatment. From the results of coagulant characterization, zeta potential and flocs properties, it can be inferred that charge neutralization by the positive charged hydrolysate of coagulant was identified as the critical effect in disperse dyes removal, while the sweep and adsorption of metal hydroxyl compound formed during the hydrolysis of coagulants were considered to play a key role in reactive dye removal. (C) 2020 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/45249]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
推荐引用方式 GB/T 7714	Huang, Xin,Wan, Yang,Shi, Baoyou,et al. Characterization and application of poly-ferric-titanium-silicate-sulfate in disperse and reactive dye wastewaters treatment[J]. CHEMOSPHERE,2020,249:1-10.
APA	Huang, Xin,Wan, Yang,Shi, Baoyou,Shi, Jian,Chen, Huan,&Liang, Huikai.(2020).Characterization and application of poly-ferric-titanium-silicate-sulfate in disperse and reactive dye wastewaters treatment.CHEMOSPHERE,249,1-10.
MLA	Huang, Xin,et al."Characterization and application of poly-ferric-titanium-silicate-sulfate in disperse and reactive dye wastewaters treatment".CHEMOSPHERE 249(2020):1-10.