湿污泥热解残渣微观孔隙结构及吸附性能.PDFVIP

第 22 卷 第 2 期 燃 烧 科 学 与 技 术 Vol.22 No.2 2016 年 4 月 Journal of Combustion Science and Technology Apr. 2016 DOI 10.11715/rskxjs. R201503072 湿污泥热解残渣微观孔隙结构及吸附性能 胡艳军，郑小艳，严 密，任建莉 (浙江工业大学能源与动力工程研究所，杭州 310014) 摘 要 ：采用管式炉热解反应器对不同含水率污泥开展高温热解制备残渣样品，采用氮气等温吸附/脱附法分析了含 水率对残渣孔隙结构和表面形貌演变的影响规律，探讨了热解残渣作为废液中重金属和染料吸附剂的可行性．研究 发现：与干污泥热解残渣相比，湿污泥热解残渣孔隙结构得到更充分发展，孔径 2 ～10,nm 的中孔数量明显增加， 且在孔径 3.75,nm 出现单峰值．随着含水率增加至 84%, ，残渣 BET 比表面积、累积总孔容积、微孔孔容等呈现减 小、增大再减小的趋势；热解残渣对废液中 Cu2 ＋、Cr6 ＋以及亚甲基蓝、孔雀石绿染料均有一定的吸附能力． 关键词 ：湿污泥；热解残渣；孔隙结构；吸附性能 中图分类号：TK63 文献标志码 ：A 文章编号 ：1006-8740 (2016)02-0121-05 Microscopic Pore Structure and Adsorption Properties of Resulting Residue Derived from Wet Sewage Sludge Pyrolysis Hu Yanjun ，Zheng Xiaoyan ，Yan Mi ，Ren Jianli (Institute of Energy and Power Engineering ，Zhejiang University of Technology ，Hangzhou 310014 ，China) Abstract ：The residue samples were obtained from high-temperature pyrolysis of sewage sludge with different mois- ture content using a tube furnace reactor．The influence of moisture contents on pore structure and surface morphology was analyzed by N2 isothermal adsorption/desorption method．The feasibility of pyrolysis residues as wastewater ad- sorbent removing heavy metal and dye was investigated．The results indicate that the pore structure of residue derived from wet sewage sludge pyrolysis was much more fully developed than that from dry sewage sludge pyrol