| 新型颗粒粉煤灰净水剂对六价铬的吸附 |
| |
| 引用本文： | 金文杰,薛晗,曾凡超,余亦伦,王莹.新型颗粒粉煤灰净水剂对六价铬的吸附[J].环境工程,2012(Z2):1-4,35. |
| |
| 作者姓名： | 金文杰 薛晗 曾凡超 余亦伦 王莹 |
| |
| 作者单位： | 辽宁科技大学化工学院;鞍山市铁东区环保局 |
| |
| 基金项目： | 辽宁省鞍山市科技局资助项目 |
| |
| 摘 要： | 采用自制颗粒粉煤灰净水剂,研究其对水溶液中的六价铬离子的吸附性能和影响因素,探讨了该净水剂对六价铬的吸附机理。研究表明:颗粒粉煤灰能有效吸附水溶液中的六价铬离子;影响吸附效果的因素重要性顺序为:pH>净水剂投加量>振荡时间>温度;该净水剂对六价铬吸附与Langmuir吸附等温方程和Freundlich吸附等温方程均很吻合,属于单分子层吸附;液膜扩散起主要作用,吸附过程符合二级动力学方程。
|
| 关 键 词： | 颗粒粉煤灰 净水剂 六价铬 吸附 |
ADSORPTION OF HEXAVALENT CHROMIUM ON NEW PURIFYING AGENT OF GRANULAR FLY ASH |
| |
| Jin Wenjie,Xue Han,Zeng Fanchao,Yu Yilun,Wang Ying.ADSORPTION OF HEXAVALENT CHROMIUM ON NEW PURIFYING AGENT OF GRANULAR FLY ASH[J].Environmental Engineering,2012(Z2):1-4,35. |
| |
| Authors: | Jin Wenjie Xue Han Zeng Fanchao Yu Yilun Wang Ying |
| |
| Institution: | 1.School of Chemical Engineering of University of Science and Technology,Anshan 114051,China; 2.Environmental Protection Agency in Tiedong District,Anshan 114001,China) |
| |
| Abstract: | A kind of new purifying agent of granular fly ash was used to study adsorption performance of hexavalent chromium ions and influencing factors in the solution,and also adsorption mechanism of hexavalent chromium on the purifying agent was explored.The research showed that granular fly ash had better adsorption effect on the hexavalent chromium ions in the solution;The order of the importance of affecting the adsorption effect was: pH> dosage of the purifying agent > agitation time > temperature;The isotherm mode of adsorption of hexavalent chromium ions on the purifying agent conformed to Langmuir adsorption isotherm equation and Freundlich adsorption isotherm equation,which were single molecule layer absorption;Liquid film diffusion was the main control step for this adsorption;Adsorption process of hexavalent chromium on the purifying agent obeyed pseudo-secondary kinetic equation. |
| |
| Keywords: | granular fly ash purifying agent hexavalent chromium adsorption |
| 本文献已被 CNKI 等数据库收录！ |
|
