• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Separation and Purification Technology >Effect of dissolved organic matter on the adsorption and stability of As(V)on manganese wad
【24h】

Effect of dissolved organic matter on the adsorption and stability of As(V)on manganese wad

机译：溶解有机物对As（V）在锰团块上吸附和稳定性的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The efficiency of manganese wad to adsorb As(V)was tested as a function of pH,contact time,adsorbent dosage,and initial As(V)concentration.The effect of dissolved organic matter (DOM)on the adsorption properties of As(V)and stability of As(V)bearing manganese wad was also studied.The major mineral phases found in the manganese wad were goethite,hematite,lithiophorite,and gibbsite.Under optimum conditions (pH 6.5,adsorbent dose 30 g/L),As(V)was lowered to 0.42,0.18,and 0.05 mg/L from 10,5,and 2.5 mg/L,respectively,in the solution.Adsorption capacity was calculated from the Langmuir isotherm model and found to be 2.15 mg/g adsorbent.The presence of DOM had significant negative effects on As(V)adsorption in the whole pH range studied,whereas the corresponding data for DOM adsorption in presence of As(V)were pH dependent.Leaching studies showed that DOM could extract maximum 4.16 mg/L (4.40%)of the adsorbed As(V)under optimum conditions from As(V)loaded manganese wad residue.
机译：测试了锰团对As（V）的吸附效率与pH，接触时间，吸附剂用量和初始As（V）浓度的关系。溶解有机物（DOM）对As（V）吸附性能的影响并研究了含As（V）的锰团块的稳定性。在锰团块中发现的主要矿物相为针铁矿，赤铁矿，硫代磷灰石和三水铝石。在最佳条件下（pH 6.5，吸附剂剂量30 g / L），As溶液中的（V）分别从10,5和2.5 mg / L降至0.42、0.18和0.05 mg / L。根据Langmuir等温模型计算的吸附容量为2.15 mg / g吸附剂DOM的存在在整个pH范围内对As（V）的吸附均具有显着的负面影响，而As（V）的存在下DOM吸附的相应数据取决于pH。浸出研究表明DOM最多可提取4.16 mg / L（4.40％）在最佳条件下从负载As（V）的锰w渣中吸附的As（V）。

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