| 硫酸根对颗粒铁除铬影响研究 |
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| 引用本文： | 冯爱云,刘菲,陈鸿汉,刘玉龙.硫酸根对颗粒铁除铬影响研究[J].河南师范大学学报(自然科学版),2009,37(3). |
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| 作者姓名： | 冯爱云 刘菲 陈鸿汉 刘玉龙 |
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| 作者单位： | 1. 河南理工大学,资源环境学院,河南,焦作,454000
2. 中国地质大学,水资源与环境学院,北京,100083 |
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| 基金项目： | 国家自然科学基金，高等学校博士学科点专项科研基金资助课题 |
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| 摘 要： | 铁渗透反应格栅是铬污染地下水的有效去除技术,但地下水中SO42-对格栅长期运行性能是否有影响以及如何影响还不清楚.本文采用批实验和柱实验的方法,研究了SO42-对颗粒铁除Cr(VI)动力学的影响.批试验表明,随SO42-浓度的增加,Cr(VI)的面积标准化速率系数kSA增加.柱实验表明,运行100 PV以前,SO2-使颗粒铁对Cr(VI)的kSA显著增强,随后SO42-增强作用逐渐减弱,运行337 PV时,SO42-没有明显的影响.SO42-通过在铁表面形成配合物而加速铁的溶解,增加颗粒铁的表面活性,从而增强颗粒铁对Cr(VI)的去除,生物作用不强时可以不考虑SO42-对格栅长期运行性能的影响.
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| 关 键 词： | SO42- Cr(VI) 颗粒铁 动力学 |
Effect of Sulfate Ion on Hexavalent Chromium Removal by Granular Iron |
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| FENG Ai-yun,LIU Fei,CHEN Hong-han,LIU Yu-long.Effect of Sulfate Ion on Hexavalent Chromium Removal by Granular Iron[J].Journal of Henan Normal University(Natural Science),2009,37(3). |
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| Authors: | FENG Ai-yun LIU Fei CHEN Hong-han LIU Yu-long |
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| Institution: | 1.School of Resources and Envi ronment;henan polytechnic university;jiaozuo 454000;China;2.School of Water Resources and Environment;China University of Geosciences;Beijing 100083;China |
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| Abstract: | Iron permeable reactive barriers are an effective remediation of groundwater contaminated by hexavalent chromium.The impact of major ions in groundwater such as sulfate on permeable reactive barriers is unclear.The effect of sulfate on the removal dynamics with chromium concentration(20 mg/l) was investigated by mixed_batch and column experiments.Batch experiments show observed Cr(VI) reduction rate increased with increasing sulfate concentration..Column results show that sulfate can make surface area norma... |
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| Keywords: | SO2-4 Cr(VI) |
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