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污泥活性炭对次甲基蓝废水的吸附

Keywords: 污泥,活性炭,次甲基蓝,吸附

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Abstract:

立足于污泥的资源化,利用化学活化法制得的污泥基活性炭,处理次甲基蓝染料废水。考察了污泥活性炭的粒径以及染料废水的pH值对染料脱色效果以及活性炭的吸附量的影响,并对吸附过程进行等温吸附线和吸附动力学分析。结果表明,在本研究的范围内,污泥活性炭的粒径越小、染料废水的pH值越高,则污泥活性炭对染料废水的吸附效果越好。当粒径在200目以上时,去除率及吸附量分别为88.2%和136.7mg/g;当pH值为11时,去除率和吸附量分别为90.4%和91.9mg/g。污泥活性炭对次甲基蓝染料的吸附脱除符合Langmuir吸附等温线和Lagergren准二级动力学方程。

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