L-半胱氨酸改性甲壳素处理含铅、镉工业废水

Treatment of industrial wastewater using chitin modified by L-cysteine

研究了L 半胱氨酸改性甲壳素作为吸附剂对Pb2 + 、Cd2 + 的动态吸附性能 ,同时考察了流速、溶液中离子的含量、吸附剂的相对用量等因素对吸附效果的影响 ,以及洗脱液的种类和酸度、洗脱速度、洗脱液体积等因素对解吸率的影响。结果表明 ,用该吸附剂填装的吸附柱对含Pb2 + 、Cd2 + 工业废水直接进行处理 ,处理后的水达到了排放标准。

Chitin modified by L-cysteine was investigated in relation to its mobile adsorption behavior for metal ions such as Pb 2+ and Cd 2+ as well as the effects of flow velocity, content of metal ion, content of adsorbent on adsorption efficiency and the effects of kind of elution solution, elution velocity, volume of elution solution on desorption efficiency. The results indicate that the industrial wastewater containing Pb 2+ and Cd 2+ can be treated by the adsorption column made of above adsorbent. In this way the treated water can reach the discharge standard.