Composting enhances the removal of lead ions in aqueous solution by spent mushroom substrate: Biosorption and precipitation

被引：50

作者：

Liu, Xuesheng ^{[1
]}

Bai, Xin ^{[1
]}

Dong, Liying ^{[1
]}

Liang, Jinsong ^{[1
]}

Jin, Yu ^{[1
]}

Wei, Yingnan ^{[1
]}

Li, Yue ^{[1
]}

Huang, Siqi ^{[1
]}

Qu, Juanjuan ^{[1
]}

机构：

[1] Northeast Agr Univ, Coll Resources & Environm, Harbin 150030, Heilongjiang, Peoples R China

来源：

JOURNAL OF CLEANER PRODUCTION | 2018年 / 200卷

关键词：

Spent mushroom substrate (SMS); Composting; Biosorption; Cow dung; Lead ions; SACCHAROMYCES-CEREVISIAE; HEAVY-METALS; SORPTION; ADSORPTION; CU(II); COPPER; MANURE; EQUILIBRIUM; MECHANISMS; CAPACITY;

D O I：

10.1016/j.jclepro.2018.07.182

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study aims to elucidate the effects of composting on spent mushroom substrate (SMS) in lead ions removal by comparing the physicochemical properties of composted spent mushroom substrate (CSMS) with composted cow dung (CCD) and SMS. The effect of experimental factors (pH, contact time, dosage and initial concentration) on lead ions removal was determined by batch experiments. Composting elevated the pH value (7.80), cation exchange capacity (CEC, 77.02 cmol/kg) and hydrophilicity, resulting in a higher removal efficiency for lead ions of CSMS than that of SMS. The increased proportion of aromatic hydrocarbon and carboxyl was propitious to lead ions removal via their response to pH variation. Biosorption and precipitation were the overriding mechanisms involved in the lead ions removal by CSMS. Our results present a simple and energy-efficient method to enhance the ability of SMS to remove heavy metals. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：1 / 11

页数：11

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