Change in re-use value of incinerated sewage sludge ash due to chemical extraction of phosphorus

被引：56

作者：

Li, Jiang-shan ^{[1
,2
]}

Chen, Zhen ^{[1
]}

Wang, Qi-ming ^{[1
]}

Fang, Le ^{[1
]}

Xue, Qiang ^{[2
]}

Cheeseman, C. R. ^{[3
]}

Donatello, Shane ^{[4
]}

Liu, Lei ^{[2
]}

Poon, Chi Sun ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Civil & Environm Engn, Kowloon, Hong Kong, Peoples R China

[2] Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China

[3] Imperial Coll London, Dept Civil & Environm Engn, London, England

[4] CSIC, Eduardo Torroja Inst Construct Sci, Cements & Mat Recycling Dept, C Serrano Galvache 4, Madrid, Spain

来源：

WASTE MANAGEMENT | 2018年 / 74卷

基金：

中国国家自然科学基金;

关键词：

Incinerated sewage sludge ash; Characterization; Chemical extraction; Phosphorus; Heavy metals; Pozzolanic activity; FLY-ASH; RECOVERY; WASTE; METALS; CEMENT; ACID; ISSA; TECHNOLOGY; NANO-SIO2; REMOVAL;

D O I：

10.1016/j.wasman.2018.01.007

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The potential of six different extractants to recover phosphorus (P) from incinerated sewage sludge ash (ISSA) was evaluated. Secondary effects such as the co-dissolution of Zn and Cu were also considered. The residual ISSA from each study was assessed in particular detail, focusing on the leachability of remaining Zn and Cu, major element composition, crystalline phases and overall degree of crystallinity and particle size distribution. The residual ISSA was also evaluated as a pozzolanic material using a Strength Activity Index (SAI) test with mortars containing Portland cement with a 20% substitution by ISSA. All results were compared to tests with untreated ISSA. Overall, the use of 3 of the 6 extractants could be ruled out due to poor P recovery potential and/or a serious compromise of the potential reuse of residual ISSA in Portland cement-based materials. The results highlight the added value of considering the potential reuse of residual ISSA when trying to optimize P recovery from ISSA by wet methods. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：404 / 412

页数：9

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