黑藻能吸附重金属废水中的Zn2+,但对其的报道鲜见.研究了生物吸附剂黑藻对废水中Zn2+的吸附去除性能,考察了溶液pH值、Zn2+初始浓度、黑藻加入量和吸附时间对吸附效果的影响.同时通过EDX分析和等温吸附模型对黑藻吸附Zn2+的机理进行了研究.结果表明:在溶液pH值为6.0、黑藻加入量为2 g/L,吸附时间为30 min,Zn2+质量浓度为20 mg/L的条件下,黑藻对Zn2+的吸附率为85%,并且发现黑藻对Zn2+的吸附是阳离子交换过程,吸附符合Langmuir,Freuncllich和D-R等温吸附模型.
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