Carbon steel slag and stainless steel slag for removal of arsenic from stimulant and real groundwater

被引：0
作者：
W. Shi
H. Li
G. Liao
G. Pei
Y. Lin
机构：
[1] Southwest University,Chongqing Key Laboratory of Karst Environment, School of Geographical Sciences
[2] Shanxi University,School of Environmental Science and Resources
[3] Northeastern University,Department of Civil and Environmental Engineering
来源：
International Journal of Environmental Science and Technology | 2018年 / 15卷
关键词：
Arsenic pollution; Groundwater remediation; Modification; Regeneration experiment; Steel slag;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Arsenic in groundwater is a serious environmental problem. The contamination of groundwater with arsenic has been of utmost concern worldwide. Steel slag is a solid waste generated from steel production. Although steel slags have been used for arsenic removal from water, this process has not been systematically or integratively researched. In this study, the arsenic removal capacity and mechanism were investigated for carbon steel slag, stainless steel slag and Fe-modified stainless steel slag based on an in-depth study. The study also evaluated the potential utilization of different steel slag for regeneration. The maximum adsorption of arsenic on carbon steel slag, stainless steel slag and Fe-modified stainless steel slag was 12.20, 3.17 and 12.82 mg g−1 at 25 °C, respectively. The modification of stainless steel slag by FeC13 can generate more pore structures and larger surface areas, and 300 °C treatment produces the best regeneration efficiency. The ΔG values were negative for all of the steel slags, indicating the spontaneous nature of the adsorption process. The solution pH was a critical parameter for the removal of arsenic for steel slags. Under highly alkaline solution conditions, the mechanism of arsenic removal by carbon steel slag and stainless steel slag can be attributed to chemisorption, including chemical precipitation and coordination reactions, and under weakly alkaline solution conditions, electrostatic interaction and specific adsorption are the arsenic removal mechanisms by Fe-modified stainless steel slag. Regeneration of the Fe-modified stainless steel slag was better achieved than that of the other steel slags in the application of high-temperature treatment.
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页码：2337 / 2348
页数：11
相关论文
共 194 条
[1]  
Ahn JS(2003)Arsenic removal using steel manufacturing byproducts as permeable reactive materials in mine tailing containment systems Water Res 37 2478-2488
[2]  
Chon CM(1998)Role of sawdust in the removal of copper(II) from industrial wastes Water Res 32 3085-3091
[3]  
Moon HS(2015)Removal of basic dye Auramine-O by ZnS: Cu nanoparticles loaded on activated carbon: optimization of parameters using response surface methodology with central composite design RSC Adv 5 18438-18450
[4]  
Kim KW(2014)Role of competing ions in the mobilization of arsenic in groundwater of Bengal Basin: insight from surface complexation modeling Water Res 55 30-39
[5]  
Ajmal M(1999)Arsenic immobilization by calcium arsenate formation Environ Sci Technol 33 3806-3811
[6]  
Khan AH(2015)Coupled redox transformation of chromate and arsenite on ferrihydrite Environ Sci Technol 49 2858-2866
[7]  
Ahmad S(2014)Arsenic removal from contaminated groundwater by membrane-integrated hybrid plant: optimization and control using visual basic platform Environ Sci Pollut Res 21 3840-3857
[8]  
Ahmad A(2014)Efficient removal of arsenic (V) from water using steel-making slag Water Environ Res 86 524-531
[9]  
Asfaram A(2013)Removal of phosphorus, fluoride and metals from a gypsum mining leachate using steel slag filters Water Res 47 1512-1520
[10]  
Ghaedi M(2015)Ultrasound assisted adsorption of malachite green dye onto ZnS:Cu-NP-AC: Equilibrium isotherms and kinetic studies—response surface optimization Sep Purif Technol 156 780-788
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