Kinetics and Mechanisms of Cadmium (Ii) Ion Sorption Using Carbonized and Modified Sorghum (Sorghum Bicolor) Hull of Two Pore Sizes (CMSH 150µm and 250µm)
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引用次数: 4
Abstract
Aim of this study was to investigate the use of modified and carbonized Sorghum Hull of two different pore sizes (150µm and 250µm) in the removal of Cadmium (II) ion from aqueous solution. The effect of contact time (20, 40, 60, 80 and 100) minutes were investigated, reported and analysed accordingly. The maximum adsorption for 150µm and 250µm were at 80th and 40th minutes, respectively (54.895mg/l and 58.874mg/l). Kinetic modeling of the results of Cadmium (II) ion of both pore sizes were also investigated, reported and analysed. These results showed that Pseudo second order kinetic model best described the sorption process. The Mechanism of sorption showed that CMSH 150µm and 250µm, respectively were particle diffusion controlled. This will serve as parameters to consider in the design of treatment plants for heavy metal detoxification using biosorbents of different pore sizes.
本研究的目的是研究两种不同孔径(150µm和250µm)的改性和碳化高粱壳对水溶液中镉(II)离子的去除效果。对接触时间(20、40、60、80和100分钟)的影响进行了调查、报告和分析。150µm和250µm的最大吸附时间分别为80 min和40 min (54.895mg/l和58.874mg/l)。对两种孔径的镉离子的动力学模型也进行了研究、报道和分析。结果表明，拟二级动力学模型最能描述吸附过程。吸附机理表明，CMSH分别为150µm和250µm，受颗粒扩散控制。这将作为使用不同孔径的生物吸附剂进行重金属脱毒处理厂设计时考虑的参数。
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