Arsenic adsorption by soil from Misiones province, Argentina

被引：19
|
作者：
Boglione, Rosana [1 ]
Griffa, Carina [1 ]
Cecilia Panigatti, Maria [1 ]
Keller, Susana [2 ]
Celeste Schierano, Maria [1 ]
Asforno, Melina [1 ]
机构：
[1] Univ Tecnol Nacl, Fac Reg Rafaela, Grp Estudios Medio Ambiente, Acuna 49, RA-2300 Rafaela, Argentina
[2] Univ Tecnol Nacl, Fac Reg Rafaela, Lab Ingn Civil, Acuna 49, RA-2300 Rafaela, Argentina
来源：
ENVIRONMENTAL TECHNOLOGY & INNOVATION | 2019年 / 13卷
关键词：
IRON CONTENT; REMOVAL; WATER; GROUNDWATER; EQUILIBRIUM; IONS;
D O I：
10.1016/j.eti.2018.10.002
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
Water arsenic reduction for human consumption represents a global environmental challenge, and there is a wide variety of methods for its removal. The aim of this study was to investigate the kinetics and equilibrium of arsenic adsorption of a soil from Misiones province, Argentina The material used as adsorbent was a lateritic soil. Kinetics experiments were carried out. Adsorption was evaluated through isotherms, working with concentrations between 0.01 and 30.0 mg As.L-1. Initially, a rapid decrease in the concentration of arsenic was verified, determining an equilibrium time of 24 h. Batch studies results were modeling using Langmuir and Freundlich adsorption models. It was verifying a satisfactory approximation to the Langmuir isotherm, (R-2 = 0.908). The adsorbent studied is considered efficient for arsenic removal and it could be used in isolated areas without potable water. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：30 / 36
页数：7
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