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废弃雪虾壳对染料的吸附行为

DOI: 10.11830/ISSN.1000-5013.2013.05.0547

Keywords: 雪虾壳, 染料, 吸附动力学, 吸附等温模型

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Abstract:

讨论吸附时间、温度、pH值、转速和离子浓度等对废弃雪虾壳吸附染料的影响,并探讨其等温吸附模型.结果表明:雪虾壳对染料的吸附随着转速的增大而增加,最佳吸附温度为40 ℃,吸附平衡时间为60 min;雪虾壳对阳离子染料的吸附随着pH值增大及离子浓度的减小而增大,而对阴离子染料的吸附则随着离子浓度的增大而增大,pH值的变化对吸附影响不大等.温吸附模型拟合结果表明:雪虾壳对结晶紫和孔雀石绿的吸附为线性等温吸附,对碱性品红为Freundlich型等温吸附,对酸性黄的吸附为Langmuir型等温吸附.

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