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adsorption of mercury by pterocarpus anglolensis: study on adsorption isotherms and kinetics
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نویسنده
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chiririwa harry ,mapombere garainesu ,seodigeng tumisang ,nyoni bothwell ,sibali linda l.
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منبع
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iranian journal of chemistry and chemical engineering - 2022 - دوره : 41 - شماره : 1 - صفحه:143 -153
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چکیده
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The efficiency of pterocarpus anglolensis sawdust, an abundantly available waste product of the timber industry, capacity as an adsorbent for mercury was investigated. a series of batch experiments was carried out with experimental conditions of metal concentration, adsorbent concentration, ph, and contact time being changed. the concentration of the metal ion was deduced using spectrophotometric means. the adsorption efficiency was found to be ph-dependent with ph 4 being the optimum. 90 minutes was found to be the equilibrium time with particle size range 90-124 μm being the most efficient. maximum adsorption of mercury was evaluated at 80.33 %. the experimental data was best modeled by the freundlich isotherm and pseudo second-order kinetic models. the calculated adsorption parameters are kf = 0.0002 l/mg, bf = 3.0 and k2 = 0.00016 g/μg.min.
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کلیدواژه
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adsorption; pterocarpus anglolensis; isotherms; kinetics
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آدرس
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vaal university of technology, department of chemical engineering, south africa, national university of science and technology, department of applied chemistry, zimbabwe, vaal university of technology, department of chemical engineering, south africa, national university of science and technology, department of applied chemistry, zimbabwe, university of south africa, college of agriculture and environmental sciences, department of environmental sciences, south africa
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پست الکترونیکی
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siballl@unisa.ac.za
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Authors
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