Alkaline modification of the acid residue of incinerated sewage sludge ash after phosphorus recovery for heavy metal removal from aqueous solutions

doi:10.1016/j.wasman.2021.01.025

	Alkaline modification of the acid residue of incinerated sewage sludge ash after phosphorus recovery for heavy metal removal from aqueous solutions
	Wang, Qiming 1,3; Li, Jiang-shan 2,3; Xue, Qiang 2,3; Poon, Chi Sun 1,3
刊名	WASTE MANAGEMENT
	2021-03-15
卷号	123 页码:80-87
关键词	Acid residue Incinerated sewage sludge ash Alkaline activation Heavy metal Adsorption
ISSN号	0956-053X
DOI	10.1016/j.wasman.2021.01.025
英文摘要	Enriched in phosphorus, sewage sludge ash has been extensively studied and applied as a secondary source for phosphorus recovery. Wet extraction, especially acid washing, is one of the most feasible methods to recover phosphorus from the ash due to its ease of operation, high efficiency and low cost. However, the management of the resultant acid residue was seldom addressed. In this study, special focus was paid to the reuse and recycling of the acid residue by an alkaline activation method. Its adsorption performance towards four different heavy metals in aqueous solutions was evaluated by batch and fixed-bed column adsorption experiments. The obtained material showed a high BET specific area (98.29 m(2)/g) and a total pore volume (0.114 cm(3)/g), and effectively removed Cd(II), Cu(II), Pb(II) and Zn(II) from aqueous solutions with the maximum adsorption capacity of around 26.8, 22.2, 53.3 and 13.5 mg/g respectively. It could be loaded in a fixed-bed column to continuously remove heavy metals especially for Pb(II). The proposed method to recycle the acid residue makes the wet extraction methods designing to recover phosphorus from incinerated sewage sludge complete without the generation of waste, which contributes to circular economy and a sustainable future. (C) 2021 Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China/Hong Kong Research Grants Council Joint Research Scheme[51861165104] ; National Natural Science Foundation of China/Hong Kong Research Grants Council Joint Research Scheme[N_PolyU511/18]
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000631950300009
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/26006]
专题	中科院武汉岩土力学所
通讯作者	Li, Jiang-shan; Poon, Chi Sun
作者单位	1.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.IRSM CAS HK PolyU Joint Lab Solid Waste Sci, Hung Hom, Kowloon, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Wang, Qiming,Li, Jiang-shan,Xue, Qiang,et al. Alkaline modification of the acid residue of incinerated sewage sludge ash after phosphorus recovery for heavy metal removal from aqueous solutions[J]. WASTE MANAGEMENT,2021,123:80-87.
APA	Wang, Qiming,Li, Jiang-shan,Xue, Qiang,&Poon, Chi Sun.(2021).Alkaline modification of the acid residue of incinerated sewage sludge ash after phosphorus recovery for heavy metal removal from aqueous solutions.WASTE MANAGEMENT,123,80-87.
MLA	Wang, Qiming,et al."Alkaline modification of the acid residue of incinerated sewage sludge ash after phosphorus recovery for heavy metal removal from aqueous solutions".WASTE MANAGEMENT 123(2021):80-87.