Novel recycling of phosphorus-recovered incinerated sewage sludge ash residues by co-pyrolysis with lignin for reductive/sorptive removal of hexavalent chromium from aqueous solutions

doi:10.1016/j.chemosphere.2021.131434

	Novel recycling of phosphorus-recovered incinerated sewage sludge ash residues by co-pyrolysis with lignin for reductive/sorptive removal of hexavalent chromium from aqueous solutions
	Wang, Qiming 1,3; Li, Jiang-shan 1,2; Poon, Chi Sun 1,3
刊名	CHEMOSPHERE
	2021-12-01
卷号	285 页码:9
关键词	Incinerated sewage sludge ash Lignin Pyrolysis Zero valent iron Chromate removal
ISSN号	0045-6535
DOI	10.1016/j.chemosphere.2021.131434
英文摘要	Incinerated sewage sludge ash (ISSA), a by-product generated from the combustion of dewatered sewage sludge, has been extensively studied as a secondary resource for phosphorus recovery by acid extraction methods. Recycling of the P-recovered ISSA residues is crucial to complete and sustain the whole process. In this study, the ISSA residue rich in iron was reused and co-pyrolyzed with lignin at 650, 850 and 1050 degrees C under N-2 atmosphere for the synthesis of a composite material to remove hexavalent chromium (Cr(VI)) from aqueous solutions. Characterization analysis including XRD, XPS, and FTIR showed that iron oxides in the residue were reduced to zero valent iron at 1050 degrees C that exhibits the optimal Cr(VI) removal performance. The Cr(VI) removal process was rapid and reached a plateau at around 30 min. The maximum removal rate was obtained at pH 2.0, which was conducive for the treatment of a synthetic Cr(VI)-containing wastewater in fix-bed column experiments, whereby Cr(VI) as well as total Cr were continuously removed. Overall, this study proposed a new routine for the recycling of ISSA residue after phosphorus recovery by the acid extraction method and provided a value-added product for Cr(VI) removal from wastewaters.
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] ; Environment and Conservation Fund of the Hong Kong SAR government[P0014071]
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000704463100005
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/28478]
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.IRSM CAS HK PolyU Joint Lab Solid Waste Sci, 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.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Wang, Qiming,Li, Jiang-shan,Poon, Chi Sun. Novel recycling of phosphorus-recovered incinerated sewage sludge ash residues by co-pyrolysis with lignin for reductive/sorptive removal of hexavalent chromium from aqueous solutions[J]. CHEMOSPHERE,2021,285:9.
APA	Wang, Qiming,Li, Jiang-shan,&Poon, Chi Sun.(2021).Novel recycling of phosphorus-recovered incinerated sewage sludge ash residues by co-pyrolysis with lignin for reductive/sorptive removal of hexavalent chromium from aqueous solutions.CHEMOSPHERE,285,9.
MLA	Wang, Qiming,et al."Novel recycling of phosphorus-recovered incinerated sewage sludge ash residues by co-pyrolysis with lignin for reductive/sorptive removal of hexavalent chromium from aqueous solutions".CHEMOSPHERE 285(2021):9.