Iron nanoparticle-modified water treatment residues for adsorption of As(III) and As(V) and their cement-based solidification/stabilization

被引：14
作者：
Sarntanayoot, P. [1 ]
Fuangswasdi, S. [1 ]
Imyim, A. [1 ,2 ]
机构：
[1] Chulalongkorn Univ, Fac Sci, Dept Chem, Bangkok 10330, Thailand
[2] Chulalongkorn Univ, Fac Sci, Dept Chem, Nanotec CU Ctr Excellence Food & Agr, Bangkok 10330, Thailand
来源：
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY | 2019年 / 16卷 / 08期
关键词：
Adsorption; Arsenate; Arsenite; Iron nanoparticles; Leaching; Stabilization; Water treatment residues; ZERO-VALENT IRON; AQUEOUS-SOLUTION; ARSENIC REMOVAL; WASTES;
D O I：
10.1007/s13762-018-2062-7
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Sludge of tap water production was modified by iron nanoparticles via borohydride reduction in ferric chloride as an adsorbent for arsenic removal from contaminated water. Factors affecting the adsorption of As(III) and As(V) were studied. The maximum adsorption capacity was 24.2 and 35.7mg/g for As(III) and As(V), respectively. The modified sludge with 10% (w/w) iron was effective for As(III) and As(V) removal from wastewater, surface water, and groundwater. The arsenic-contaminated sludge was stabilized/solidified using cement. The leaching study of arsenic by the dynamic monolithic leaching test (DMLT) showed that arsenic was mildly leached from the solidified adsorbent.
引用
收藏
页码：4285 / 4292
页数：8
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