利用虾壳从硝酸溶液中吸附铀的潜力。
Potentiality of uranium biosorption from nitric acid solutions using shrimp shells.
机构信息
Nuclear Materials Authority, P.O. Box 530, El Maadi, Cairo, Egypt.
Nuclear Materials Authority, P.O. Box 530, El Maadi, Cairo, Egypt.
出版信息
J Environ Radioact. 2014 Aug;134:120-7. doi: 10.1016/j.jenvrad.2014.03.007. Epub 2014 Apr 3.
Biosorption has gained important credibility during recent years because of its good performance and low cost. This work is concerned with studying the potentiality of the chitin component of the shrimp shells for uranium biosorption from nitric acid liquid solutions. The structural characteristics of the working chitin have been determined via Fourier Transform Infrared Spectroscopy (FTIR). The surface morphology was examined using Scanning Electron Microscopy (SEM). The adsorption capacity of biomass was investigated experimentally. The influence of contact time, pH, metal ion concentration, solution volume to mass ratio and temperature were evaluated and the results were fitted using adsorption isotherm models. The kinetic of uranium biosorption was also investigated as well as biosorption thermodynamic.
近年来，由于生物吸附具有良好的性能和低成本，因此获得了重要的可信度。本工作研究了虾壳中甲壳素成分从硝酸液体溶液中吸附铀的潜力。通过傅里叶变换红外光谱（FTIR）确定了工作甲壳素的结构特征。使用扫描电子显微镜（SEM）检查了表面形态。通过实验研究了生物质的吸附能力。评估了接触时间、pH 值、金属离子浓度、溶液体积与质量比和温度的影响，并使用吸附等温线模型对结果进行拟合。还研究了铀生物吸附的动力学和生物吸附热力学。
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