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Performance evaluation of industrial by-product phosphogypsum in the sorptive removal of nickel(II) from aqueous environment

机译:工业副产品磷石膏在水环境中吸附去除镍的性能评估

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The removal of Ni(II) ions from aqueous medium by phosphogypsum was examined. The removal capacity of phosphogypsum for Ni(II) ions was studied as a function of solution pH, contact time, adsorbent dosage and adsorbate concentration. The maximum adsorption of the Ni(II) ions on the phosphogypsum was observed at the pH values between 9.5 and 11. The equilibrium time was attained after 30 min. and the maximum removal percentage was achieved at an adsorbent loading weight of 1 gm/100ml. The equilibrium adsorption capacity of adsorbent used for nickel was measured and extrapolated using linear Freundlich, Langmuir and Temkin isotherms and the experimental data were found to fit the Temkin isotherm model.
机译:研究了通过磷石膏从水性介质中去除Ni(II)离子的方法。研究了磷石膏对Ni(II)离子的去除能力与溶液pH值,接触时间,吸附剂剂量和被吸附物浓度的关系。在pH值介于9.5和11之间时,观察到磷石膏上Ni(II)离子的最大吸附。30分钟后达到平衡时间。在吸附剂负载量为1 gm / 100ml时达到最大去除率。用线性Freundlich,Langmuir和Temkin等温线测量并推断了用于镍的吸附剂的平衡吸附容量,发现实验数据符合Temkin等温线模型。

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