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Use of cork waste as biosorbent for hexavalent chromium

机译:用软木废料作为六价铬的生物吸附剂

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The biosorption by cork powder is considered as a new method for heavy metal removal from industrial waste waters such as chromium tanning factories. The aim of this study is to evaluate the efficiency extent of this method using a cork powder as biosorbent for hexavalent chromium Cr(VI). The Fourier Transform Infrared spectroscopy (FTIR) analysis permits to distinguish the type of functional groups likely to participate in metal binding. A linear form of BET isotherms for all the three used temperatures (25, 35 and 45°C) and a pseudo-second-order Lagergren equation of adsorption kinetics are obtained. Other experimental results highlight the meaningful influence of parameters such as contact time, pH and concentrations of the solution, on chromium adsorption rate that reach a 97% value under definite conditions particularly a pH of 2-3 values.
机译:软木粉的生物吸附被认为是从工业废水中的重金属去除的新方法,如铬鞣制品。本研究的目的是评估使用软木粉作为六价铬Cr(VI)的生物吸附剂的这种方法的效率程度。傅里叶变换红外光谱(FTIR)分析允许区分可能参与金属结合的官能团的类型。获得所有三个使用的温度(25,35和45℃)的下注等温线的线性形式,以及吸附动力学的伪二阶Laggrgen方程。其他实验结果突出了溶液中接触时间,pH和浓度等参数的有意义影响,该铬吸附速率在明确条件下达到97%的值,特别是2-3值的pH值。

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