| 麦草制吸附剂对水体中不同阴离子的吸附性能 |
| |
| 引用本文： | 许醒,高悦,高宝玉,岳钦艳,钟倩倩.麦草制吸附剂对水体中不同阴离子的吸附性能[J].中国科学:化学,2010(10):1558-1563. |
| |
| 作者姓名： | 许醒 高悦 高宝玉 岳钦艳 钟倩倩 |
| |
| 作者单位： | 水环境污染控制与资源化山东省重点实验室 山东大学环境科学与工程学院,济南250100 |
| |
| 基金项目： | 国家自然科学基金（50878121）; “十一五”国家科技支撑计划重点项目（2006BAJ08B05-2） 国家“十一五”水污染控制与管理重大技术专项（2008ZX07010-008-002）资助 |
| |
| 摘 要： | 采用环氧氯丙烷、乙二胺和三乙胺对麦草秸秆进行化学改性,研究改性麦草秸秆的性能指标并重点考察其对水体中的NO3-,PO43-和Cr2O72-的吸附性能及效果.研究结果表明,改性麦草秸秆引入了带正电荷的胺基基团,可以显著提高对阴离子的吸附性能;改性麦草投加量、pH值、吸附时间和温度对吸附性能影响较大,吸附过程符合伪二级动力学方程和Langmuir等温吸附模式;改性麦草秸秆对NO3-、PO43-(P)和Cr2O72-(Cr)的最大吸附量分别为53.5、62.4和386.2mg·g-1.
|
| 关 键 词： | 麦草秸秆 阴离子 吸附 最大吸附量 |
Adsorption studies on the removal of anions from aqueous solutions onto adsorbent prepared from wheat straw |
| |
| XU Xing,GAO Yue,GAO BaoYu,YUE QinYan ＆ ZHONG QianQian.Adsorption studies on the removal of anions from aqueous solutions onto adsorbent prepared from wheat straw[J].Scientia Sinica Chimica,2010(10):1558-1563. |
| |
| Authors: | XU Xing GAO Yue GAO BaoYu YUE QinYan ＆ ZHONG QianQian |
| |
| Institution: | Shandong Key Laboratory of Water Pollution Control and Resource Reuse; School of Environmental Science and Engineering,Shandong University,Jinan 250100,China |
| |
| Abstract: | Modified wheat straw （MWS） was prepared by the grafting of epichlorohydrin,triethylamine and ethylenediamine onto WS. Characterizations of MWS and its adsorption capacities for NO3-,PO43-and Cr2O72-were investigated. The results indicate that amine groups with positive-charge have been introduced into the structure of MWS,and significantly increase its anion adsorption property. The functions of MWS dosage,the solution pH,the contact time and temperature show great influence on the adsorption process,and the adsorption is well fitted with the Langmuir equation and pseudo second-order model. More over,the maximum adsorption capacity of MWS for NO3-,PO43-（P） and Cr2O72-（Cr） are 53.5、62.4 and 386.2 mg g-1,respectively. |
| |
| Keywords: | wheat straw anion adsorption maximum adsorption capacity |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
