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首页> 外文期刊>Journal of natural fibers >Adsorption Kinetics of Toxic Heavy Metal Ions from Aqueous Solutions onto Grafted Jute Fibers with Acrylic Acid by Gamma Irradiation
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Adsorption Kinetics of Toxic Heavy Metal Ions from Aqueous Solutions onto Grafted Jute Fibers with Acrylic Acid by Gamma Irradiation

机译：γ射线辐照丙烯酸对接枝黄麻纤维的有毒重金属离子吸附动力学

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摘要

Jute fibers were used as an adsorbent substrate for Hg2+ and Pb2+ metal ions as toxic pollutants from their aqueous solutions after graft copolymerization with polyacrylic acid under the effect of gamma irradiation. The treated jute fibers were characterized by using of Fourier-Transform Infrared Spectroscopy. The effects of solution pH, contact time, temperature, and the dissolved metal ions' concentration on the adsorption efficiency were investigated. The adsorption kinetics and the used adsorption isotherm were also investigated. From the results, it was concluded that the adsorption process conformed the second-order kinetic reaction and followed the Langmuir adsorption isotherm model, and the higher adsorption capacities were at pH 5 and 6 for Pb2+ and Hg2+ metal ions respectively.
机译：黄麻纤维在γ射线辐射作用下与聚丙烯酸接枝共聚后，被用作水溶液中Hg2 +和Pb2 +金属离子的有毒污染物的吸附基质。通过使用傅立叶变换红外光谱对经处理的黄麻纤维进行表征。研究了溶液的pH值，接触时间，温度和溶解的金属离子浓度对吸附效率的影响。还研究了吸附动力学和使用的吸附等温线。结果表明，吸附过程符合二级动力学反应，遵循Langmuir吸附等温线模型，Pb2 +和Hg2 +金属离子在pH为5和6时的吸附容量较高。

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