期刊文献+

高岭土/菱铁矿杂化材料制备及除砷性能研究 预览 被引量:3

Kaolin/siderite synthetic material preparation and properties of arsenic removal from groundwater
在线阅读 下载PDF
收藏 分享 导出
摘要 采用KOH活化后的高岭土和菱铁矿为主要原材料,磷酸酸化过的花生壳为造孔剂,采用高温活化的方法,通过正交静态吸附试验,研究其在常温常压下对水中砷的吸附去除效果。结果表明,在高岭土、菱铁矿、花生壳用量之比为2∶2∶1,KOH浓度为0.3mol/L,浸泡时间为6h,活化温度为900℃时,制备得到的粉末状材料具有最好的除砷效果,可达到95%。利用直径40mm,长450mm的有机玻璃柱进行动态连续吸附试验,结果表明此材料可以连续有效除砷20h左右,除砷效果平均可达到84%。此材料吸附除砷符合Langmuir等温吸附模型。 Kaolin and siderite activated by KOH were adopted as the main raw materials, the peanut shell acidified by phosphoric acid served as the pore-forming material, and then arsenate-removing material was obtained by the high -temperature activation method. The performance of the arsenate -removing material under the condition of normal temperature and pressure was studied in orthogonal captive adsorption tests. The results show that, when weight ratio of the kaolin, siderite and peanut shell was 2∶2∶1, KOH concentration was 0.3 mol/L, soaking time was 6 h and activation temperature was 900℃, the removal efficiency of arsenate was the best, even attaining to 95%. The adsorption material was filled in a plexiglass column 40mm in diameter and 450mm in length for dynamic continuous adsorption experiments. The results show that the material could maintain an effective removal of arsenate for 20 hours or so and the removal efficiency of arsenate could reach 84%. The adsorption behavior meets the Langmuir isotherm.
作者 刘欣 冯流 陈明 赵青涛 高峰 LIU Xin, FENG Liu, CHEN Ming, GAO Feng, ZHAO Qing-tao (1. Beijing University of Chemical Technology, Beijing 100029, China; 2. Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China)
出处 《中国地质》 CAS CSCD 北大核心 2010年第3期 789-796,共8页 Chinese Geology
基金 中国地质调局局工作项目“全国地方病严重区地下水勘查与供水安全综合研究”(1212010634714-13)项目资助
关键词 菱铁矿 高岭土 除砷 吸附 地下水 siderite kaolin arsenate removal adsorption groundwater
  • 相关文献

参考文献36

二级参考文献219

共引文献352

同被引文献90

引证文献3

二级引证文献10

投稿分析
职称考试

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈