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The process of adsorption of metal ions by immobilized marine algae with the existence of clay was investigated. It can be noted from the results that, after mixing with clay, the adsorption rate increases rapidly with the increasing amount of the marine algae. When pH=5, the best ratio between the clay and the marine algae is 1:4 for Pb^2+. The result of in situ handling of the waste water containing heavy metals shows that the average adsorption rates of heavy metal irons Cu^2+, Cd^2+, Pb^2+ and Ni^2+ are all over 70 %. 相似文献
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两种大型海藻粉对重金属离子吸附热力学的研究 总被引:4,自引:0,他引:4
本文探讨了两种常见大型海藻,即马尾藻(Sargassum fusiforme)和海带(Laminaria japonica)对重金属离子(Cu^2 、Pb^2 、Cd^2 、Ni^2 )的吸附热力学过程.结果表明,这两种海藻粉对重金属离子的吸附曲线基本符合Langmuir吸附模型,其吸附容量受温度的影响,马尾藻和海带粉对Cu^2 的吸附均为吸热过程;25℃和35℃两组实验结果显示,其吸附容量随温度的升高而增加,吸附热分别为59.9、76.8kJ/mol. 相似文献