• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>2010 4th International Conference on Bioinformatics and Biomedical Engineering >Removal of Carbon Tetrachloride from Contaminated Groundwater Environment by Adsorption Method
【24h】

Removal of Carbon Tetrachloride from Contaminated Groundwater Environment by Adsorption Method

机译：吸附法去除污染地下水环境中的四氯化碳

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study describes the removal of carbon tetrachloride (CT) in simulated groundwater sample by an adsorption method using quaternary ammonium salt modified bentonite as adsorbent. The morphology of bentonite before and after modification was observed through scanning electron microscope (SEM). Moreover, the effects of bentonite dosage, adsorption time and temperature on removal rate of CT were investigated. The SEM results showed that, after natural calcium-benonite is modified by quaternary ammonium salt, the particle clearance of the modified bentonite obviously increased and the surface property changed from originally hydrophilic to hydrophobic, enabling it to effectively adsorb and remove CT from water. The optimal adsorption conditions obtained were bentonite dosage 5.0 g/L, adsorption time 2 hours and temperature 30 °C. Under these optimized conditions, the removal efficiency of CT reached above 70% when modified bentonite was used in treating a real groundwater polluted by CT.
机译：这项研究描述了使用季铵盐改性膨润土作为吸附剂的吸附方法去除模拟地下水样品中的四氯化碳（CT）。通过扫描电子显微镜（SEM）观察膨润土改性前后的形态。考察了膨润土用量，吸附时间和温度对CT去除率的影响。 SEM结果表明，季铵盐对天然钙-膨润土进行改性后，改性膨润土的颗粒清除率明显增加，其表面性质由原来的亲水性变为疏水性，使其能够有效地吸附和去除水中的CT。获得的最佳吸附条件为膨润土用量为5.0 g / L，吸附时间为2小时，温度为30°C。在这些优化的条件下，当改性膨润土用于处理被CT污染的真实地下水时，CT的去除效率达到70％以上。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号