Development of New Method for Adsorption and Recovery of Heavy Metal using Biomass

从资源回收和环境保护的角度出发，研究了利用海藻和贝壳生物质对重金属(特别是稀土元素和铀)的回收利用。因此，主要澄清了以下事项。(1)海藻和贝类生物量对稀土的吸附等温线可用Langmuir等温式较好地描述。结果表明，吸附主要发生在单分子膜上。(2)壳层中含有蛋白质的裂隙区域对稀土元素具有较高的吸附能力。因此，本研究认为海藻和贝壳生物量可能是稀土的有效吸附剂。

From the viewpoint of resources recovery as well as environmental protection, the investigation aboutremoval and recovery of heavy metals (particularly rare earth elements (REEs) and uranium (U)) using the seaweed and shell biomass was performed in this work. Consequently, the following matters have been mainly clarified. (1) Adsorption isotherms for REEs using the seaweed and shell biomass can be generally described by Langmuir isotherms more satisfactorily. It indicates that the adsorption occur predominantly on the monolayer. (2) The cracks area containing protein in the shell biomass shows high absorption capacity for REEs. Then, this study suggested that the seaweed and shell biomass could be efficient sorbents for REEs.