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首页> 外文会议>Water Pollution IX : Modelling, Monitoring and Management >Adsorption of zinc, cadmium and nickel from aqueous solutions using ground water sludge (GWS)
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Adsorption of zinc, cadmium and nickel from aqueous solutions using ground water sludge (GWS)

机译：使用地下水污泥（GWS）从水溶液中吸附锌，镉和镍

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In this study, the applicability of ground water sludge (GWS), a waste material from a ground water treatment plant as a potential absorbent for heavy metals was experimentally analyzed. The presence of 56.4% of Fe_2O_3 in the GWS composition indicated that GWS has potential adsorptive behaviour. An adsorption study using GWS was performed and results were analyzed in the adsorption of several heavy metals namely Ni, Cd, and Zn. The adsorbent concentrations (GWS) were varied from 250 mg/L to 4000 mg/L and agitated with aqueous heavy metal solutions for 1hr, 3hrs, 6hrs and 24hrs contact times. The batch adsorption indicated that Ni, Cd, and Zn were totally adsorbed using 4000 mg/L of the absorbent at a contact time of 24hrs. The removal efficiencies for Cd, Ni, and Zn at adsorbent concentrations of 3000 mg/L, 3500 mg/L and 3500 mg/L, were found to be 91.6%, 73.8% and 69%, respectively. Adsorption of metals also increased with longer contact times and higher adsorbent dosages. The study indicated that there is a potential in using waste sludge from ground water treatment plants as an adsorption material in removing heavy metals.
机译：在这项研究中，实验分析了地下水污泥（GWS）（一种来自地下水处理厂的废料）作为重金属的潜在吸收剂的适用性。 GWS组成中Fe_2O_3的含量为56.4％，表明GWS具有潜在的吸附行为。进行了使用GWS的吸附研究，并分析了几种重金属Ni，Cd和Zn的吸附结果。吸附剂浓度（GWS）在250 mg / L至4000 mg / L之间变化，并与重金属水溶液搅拌1小时，3小时，6小时和24小时接触时间。分批吸附表明，使用4000 mg / L的吸收剂在24小时的接触时间可完全吸附Ni，Cd和Zn。吸附剂浓度为3000 mg / L，3500 mg / L和3500 mg / L时，Cd，Ni和Zn的去除效率分别为91.6％，73.8％和69％。随着更长的接触时间和更高的吸附剂量，金属的吸附也会增加。研究表明，将地下水处理厂产生的污泥用作去除重金属的吸附材料具有潜力。

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