污染控制技术及原理
徐浩东,宁平,蒋明,田森林,张永,师容梅,王学谦.净化PH3和H2S气体改性活性炭的制备与表征[J].环境科学学报,2008,28(7):1365-1369
净化PH3和H2S气体改性活性炭的制备与表征
- Preparation and characterization of modified activated carbon for purification of PH3 and H2S
- 基金项目:国家高技术研究发展计划(863)项目(No.2004AA649040);国家自然科学基金项目(No.53002345)
- 徐浩东
- 昆明理工大学环境科学与工程学院, 昆明 650093
- 宁平
- 昆明理工大学环境科学与工程学院, 昆明 650093
- 蒋明
- 昆明理工大学环境科学与工程学院, 昆明 650093
- 田森林
- 昆明理工大学环境科学与工程学院, 昆明 650093
- 张永
- 昆明理工大学环境科学与工程学院, 昆明 650093
- 师容梅
- 昆明理工大学环境科学与工程学院, 昆明 650093
- 王学谦
- 昆明理工大学环境科学与工程学院, 昆明 650093
- 摘要:以工业4号活性炭为载体、制备了金属阳离子改性活性炭,考察了改性活性炭的制备工艺条件对黄磷尾气中PH3和H2S的净化效果的影响;对空白炭、改性炭和吸附饱和活性炭做BET、XPS、TG/DTA分析.结果表明,250℃条件下制备的改性活性炭具有最佳的净化效果;孔径为1×10-9~8×10-9m有利于改性活性炭对磷、硫的吸附;改性过程中引入的二价铜离子可以净化PH3和H2S并将其转化为磷酸和硫.
- Abstract:Activated carbon 4# (AC4) was modified with Cu-containing impregnant and the factors influencing its preparation were investigated. Fresh activated carbon, modified activated carbon, and modified activated carbon saturated with PH3 and H2S were characterized by N2-BET、XPSand TG/DTA. The highest efficiency of the modified ACsorbent was reached at a temperature of 250℃. Phosphorus and sulfur were mainly adsorbed in pores of 1~8 nm in size. PH3 and H2S can be decomposed by activated carbon modified with copper cations and the adsorbed products are phosphoric acid and sulfur.
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