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首页> 外文期刊>Journal of Environmental Engineering >Arsenic removal from groundwater by iron impregnated sand
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Arsenic removal from groundwater by iron impregnated sand

机译：铁浸渍砂去除地下水中的砷

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A granular media known as iron impregnated sand (ITS), developed in the laboratory by impregnating iron on a quartz sand surface by a simple and easy process has proved more effective than iron oxide coated sand (IOCS). Kinetic and isothermal studies showed that the uptake potential of ITS media was much more than IOCS media. The sequence of anions studied competing with respect to As(III) on ITS media was SO42- > HCO31->Cl-. The presence of Ca2+ ions significantly improved the removal efficiency. During column studies the breakthrough loadings of IOCS (q(b) = 0.042 and 0.068) and IIS (q(b) = 0.097 and 0.217) for water and simulated water, respectively, show that q(b) for IOCS is lower than for ITS under similar experimental conditions. A filter effluent of 68 L of simulated water passed through 250 g IIS contained less than 0.05 mg As/L. [References: 14]
机译：在实验室中通过一种简单易行的方法将铁浸渍在石英砂表面上而开发出的称为铁浸渍砂（ITS）的颗粒介质已证明比氧化铁涂层砂（IOCS）更有效。动力学和等温研究表明，ITS介质的吸收潜力远大于IOCS介质。在ITS介质上研究的与As（III）竞争的阴离子序列为SO42-> HCO31-> Cl-。 Ca 2+离子的存在显着提高了去除效率。在专栏研究中，水和模拟水的IOCS（q（b）= 0.042和0.068）和IIS（q（b）= 0.097和0.217）的突破载荷分别表明IOCS的q（b）低于ITS在类似的实验条件下。通过250 g IIS的68 L模拟水的过滤器流出物含有少于0.05 mg As / L。 [参考：14]

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