Application of iron-modified biochar for arsenite removal and toxicity reduction

被引：59

作者：

Kim, Jiwon ^{[1
]}

Song, Jinyoung ^{[1
]}

Lee, Seung-Mok ^{[2
]}

Jung, Jinho ^{[1
]}

机构：

[1] Korea Univ, Div Environm Sci & Ecol Engn, Seoul 02841, South Korea

[2] Catholic Kwandong Univ, Dept Environm Engn, Kangnung 210701, South Korea

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2019年 / 80卷

基金：

新加坡国家研究基金会;

关键词：

Acute toxicity; Adsorption; Arsenic; Biochar; Iron; GRANULAR ACTIVATED CARBON; OXIDE PARTICLES MBOP; AQUEOUS-SOLUTION; ADSORPTION CAPACITY; EFFICIENT REMOVAL; GIANT MISCANTHUS; MAGNETIC BIOCHAR; COLUMN SORPTION; LOW-COST; WATER;

D O I：

10.1016/j.jiec.2019.07.026

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In the present study, the Miscanthus biochar was modified with amorphous iron (hydr)oxide to remove arsenite. The kinetic study indicated the chemical adsorption of arsenite on the iron-modified biochar. Additionally, the iron-modified biochar exhibited similar or higher adsorption of arsenite (56.06 and 47.90 mg/g Fe for powder and beads, respectively) than previously reported composites. Moreover, the leached arsenite concentration from both the adsorbents was less than 2.02 mg/L, which was not acutely toxic to Daphnia magna. Considering that it is not easy and safe to use adsorbents in powder form, the iron-modified biochar beads can be a promising adsorbent. (C) 2019 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

引用

页码：17 / 22

页数：6

共 53 条

[1] Biochar as a sorbent for contaminant management in soil and water: A review [J].