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首页> 外文会议>1998 Joint Conference on the Environment, 1998, Mar 31-Apr 1, 1998, Albuquerque, NM >DEVELOPMENT OF ARSENIC REMEDIATION TECHNOLOGY IN DRINKING AND WASTE WATERS USING FERRATE
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DEVELOPMENT OF ARSENIC REMEDIATION TECHNOLOGY IN DRINKING AND WASTE WATERS USING FERRATE

机译：高铁酸盐在饮用水和饮用水中砷修复技术的发展

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摘要

This work demonstrates the development of an efficient alternative method for arsenic remediation from drinking waters using ferrate and ferrous ions. Our method represents a new variation on an old approach, that is, precipitation of ferric arsenate. Unlike previous studies using ferric salts however, this method approaches the theoretical 1:1 iron/arsenic ratio and does so under mildly acidic conditions. Arsenate and arsenite were used as contaminates and removal to below 5ppb was achieved for each. DMA however was found to be intractable to this removal method. The potential interference from nitrate and phosphate ions were also studied for arsenate ions. Plots of removal versus total iron dose were constructed over a range of pHs.
机译：这项工作证明了一种有效的替代方法的发展，该方法可以使用高铁酸盐和亚铁离子从饮用水中进行砷修复。我们的方法代表了旧方法的新变化形式，即砷酸铁的沉淀。但是，与先前使用铁盐的研究不同，该方法接近理论上的1：1铁/砷比，并且在弱酸性条件下也是如此。使用砷酸盐和亚砷酸盐作为污染物，每种污染物的去除率均低于5ppb。然而，发现DMA对于这种去除方法是棘手的。还研究了硝酸根和磷酸根离子对砷离子的潜在干扰。在一定pH范围内绘制去除量与总铁剂量的关系图。

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