Selective acidic elution of Ca from sewage sludge ash for phosphorus recovery under pH control

被引：17

作者：

Lim, B. H.

Kim, Dong-Jin ^{[1
]}

机构：

[1] Hallym Univ, Dept Environm Sci & Biotechnol, Chunchon 200702, Gangwon, South Korea

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2017年 / 46卷

基金：

新加坡国家研究基金会;

关键词：

Acid pretreatment; Ca elution; Phosphorus recovery; Sewage sludge ash; PHOSPHATE; ALUMINUM; ADSORPTION; SORPTION; FTIR; IRON;

D O I：

10.1016/j.jiec.2016.10.016

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Phosphorus (P) is recovered from sewage sludge ash (SSA) by selective HCl elution of Ca. Leaching and rearrangement of P were very fast and the amounts of leaching and recombination of P depend strongly on pH. pH control at 4.0 obtained selective elution ratio (Ca(%)/P(%)) of 20 by recombination of P to Al in SSA residue while it was 5.6 without pH control. XRD and element mass balance showed that Ca-P in the raw SSA was converted to Al-P complex during the acid pretreatment. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

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收藏

页码：62 / 67

页数：6

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