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首页> 外文期刊>Adsorption Science & Technology >A comparative study on the removal efficiency of metal ions (Cu2+, Ni (2+), and Pb (2+)) using sugarcane bagassederived ZnCl2-activated carbon by the response surface methodology
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A comparative study on the removal efficiency of metal ions (Cu2+, Ni (2+), and Pb (2+)) using sugarcane bagassederived ZnCl2-activated carbon by the response surface methodology

机译：用糖烷包发型ZnCl2-活性炭通过糖烷面积法（Cu2 +，Ni（2+）和Pb（2+）和Pb（2+）和Pb（2+）的去除效率进行比较研究

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摘要

In the present article, the optimization of removal of Cu2+, Ni (2+), and Pb (2+) using sugarcane-based activated carbon was studied. The activated carbon synthesized from low-cost sugarcane bagasse via ZnCl2 activation process was found to possess surprisingly high surface area (> 1500m(2)/g). In adsorption study, the individual and interactive effects of three critical parameters including initial concentration, pH of solution, and activated carbon dosage on removal efficiency of Cu2+, Ni2+, and Pb2+ were assessed by applying the response surface methodology combined with central composite design. The established second-order polynomial regression models provided an excellent interpretation of experimental data with acceptable coefficients of determination (R-2) and analysis of variance demonstrated statistical significance of the model terms. In the examined region, the predicted maximum removal efficiency and adsorption capacity were found in the order: Ni2+ (66.4%, 2.99 mg/g)< Cu2+ (90%, 13.24 mg/g)< Pb2+ (99.9%, 19.3 mg/g), which were also confirmed in the verification experiments.
机译：在本文中，研究了使用基于甘蔗基活性炭的Cu2 +，Ni（2+）和Pb（2+）的除去的优化。发现通过ZnCl2活化过程从低成本甘蔗泡沫合成的活性炭具有令人惊讶的高表面积（> 1500m（2）/ g）。在吸附研究中，通过施加响应面方法与中央复合设计结合，评估包括初始浓度，溶液的初始浓度，溶液pH和活性炭剂量的三种关键参数的个体和交互效果。所建立的二阶多项式回归模型提供了具有可接受的确定系数（R-2）的实验数据的优异解释，并且方差分析表明了模型术语的统计学意义。在检查区域中，预测的最大去除效率和吸附能力有序：Ni2 +（66.4％，2.99mg / g）

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