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ZnCl2/CuCl2复合化学活化法制备污泥活性炭及其分形研究
发表时间：2010-06-30 浏览量：1581 下载量：501
| 全部作者： | 关伟，傅敏，彭亚娟 |
| 作者单位： | 重庆工商大学环境与生物工程学院 |
| 摘 要： | 以污水处理厂剩余污泥为原料，采用ZnCl2/CuCl2复合法制备污泥活性炭，最佳制备条件为：活化温度为500℃，活化时间为60 min，ZnCl2浓度为3 mol/L，CuCl2浓度为0.3 mol/L，最佳条件下碘吸附值为534 mg/g. 并用污泥活性炭处理制药废水，考察样品对化学需氧量（chemical oxygen demand, COD）和总有机碳（total organic carbon, TOC）的吸附性能，所得吸附数据用Langmuir和Freundlich 吸附等温线进行拟合，根据Freundlich吸附等温线及分形Freundlich吸附模型,污泥活性炭在吸附COD及TOC时所计算得到的分形维数值分别为2.710 6和2.836 6，并证明该污泥活性炭具有分形特性。 |
| 关 键 词： | 环境工程学；吸附；活性炭；制备；分形维数 |
| Title： | Preparation of activated carbon composite ZnCl2/CuCl2 sludge and fractal research |
| Author： | GUAN Wei, FU Min, PENG Yajuan |
| Organization： | Department of Environmental and Biological Engineering, Chongqing Technology and Business University |
| Abstract： | Activated carbon from sewage sludge was prepared from residual sewage sludge of sewage treatment plant by ZnCl2/CuCl2 activation method. The optimum preparation conditions were activation temperature 500℃, activation time 60 min, ZnCl2 concentration 3 mol/L, and CuCl2 concentration 0.3 mol/L. The iodine adsorption value of the sludge activated carbon under the optimum condition was 534 mg/g. The activated carbon sewage sludge was also used to treat pharmaceutical waster water. The absorbing capability of chemical oxygen demand (COD) and total organic carbon (TOC) was studied. The adsorption data were fitted by Langmuir and Freundlich adsorption isotherms. According to the Freundlich adsorption isotherm and the Freundlich adsorption model of fractal, the carbon sewage sludge fractal dimension in absorption of COD and TOC were respectively obtained as 2.710 6 and 2.836 6, which proved that the activated carbon from sewage sludge had fractal characteristics. |
| Key words： | environmental engineering; adsorption; activated carbon; preparation; fractal dimension |
| 发表期数： | 2010年6月第12期 |
| 引用格式： | 关伟，傅敏，彭亚娟. ZnCl2/CuCl2复合化学活化法制备污泥活性炭及其分形研究[J]. 中国科技论文在线精品论文，2010，3（12）：1244-1248. |
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