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环境化学  2015 

人工生物膜对水中C60纳米晶体颗粒的吸附及影响因素

Keywords: 人工生物膜,C60纳米晶体颗粒物,吸附,影响因素

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Abstract:

研究了在不同影响因素下,人工生物膜对水介质中C60纳米晶体颗粒物的吸附行为.结果表明,nC60能够被人工生物膜吸附,且吸附量受C60纳米晶体颗粒物初始浓度、pH和吸附剂量的影响.吸附等温线可用Henry线性分配模型及Freundlich模型进行数学描述.当溶液中nC60初始浓度由1.0mg·L-1增大到11.6mg·L-1时,人工生物膜对C60纳米晶体颗粒物的吸附量由111.9mg·kg-1增大至813.2mg·kg-1;随溶液pH值从8(自然中水的pH)到3(生理中相关pH最低限)逐渐减小,nC60在人工生物膜中积累量稳定增长,其吸附量由258.4mg·kg-1增大到742.0mg·kg-1;当C60纳米晶体颗粒物浓度为5.2mg·L-1时,0.3g人工生物膜的吸附效率最大.

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