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莴苣皮生物材料吸附水溶液中阳离子染料的研究

DOI: 10.7685/j.issn.1000-2030.2006.02.010, PP. 45-49

Keywords: 生物吸附,阳离子染料,亚甲蓝,亮甲酚兰,中性红,莴苣皮

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Abstract:

采用莴苣皮粉剂为生物材料吸附剂对亚甲蓝(MB)、亮甲酚兰(BCB)、中性红(NR)3种阳离子染料进行了吸附研究。考察了吸附剂量、吸附剂粒径、吸附时间、染料浓度及pH值等因素对染料吸附的影响,确定了最佳吸附条件。结果显示,莴苣皮粉剂对3种阳离子染料的去除率均较高,当初始pH值等于或大于4时,用2.0g60~80目的莴苣皮粉剂对浓度为100mg.L-1的3种阳离子染料处理60min后的去除率都在85%以上;吸附等温线符合Langmuir或Freun-dlich模式,用Lagergren准一级反应动力学方程对吸附过程进行模拟,拟合良好。上述结果表明,莴苣皮可成为一种很有前途的阳离子染料废水处理生物材料。

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