采用十六烷基胍改性凹凸棒土对甲基橙废水进行脱色处理,考察了吸附时间、吸附剂用量和染料浓度等因素对脱色效果的影响.结果表明,十六烷基胍改性凹凸棒土对甲基橙废水具有很好的脱色性能,其对甲基橙废水脱色率达98%以上,与原凹凸棒土相比有显著提高.平衡吸附量q<,e>与平衡浓度p<,e>之间关系符合Langmuir等温吸附方程.吸附热值小于40 kJ/mol,表观表现为物理吸附.
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