• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Global Symposium on Recycling, Waste Treatment and Clean Technology; 20040926-29; Madrid(ES) >PREPARATION OF ION-EXCHANGERS FROM COTTON STALKS
【24h】

PREPARATION OF ION-EXCHANGERS FROM COTTON STALKS

机译：用棉絮制备离子交换剂

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

Modification of cotton stalks to be used as ion-exchangers was investigated. Incorporation of phosphate, sulfonate and phosphosulfonate into cotton stalks, particle size less than 1.5 ml, increases its efficiency toward metal ion uptake. The sodium binding capacity of phosphosulfonated cotton stalks is higher than phosphorylated and sulfonated cotton stalks. The efficiency of the prepared ion exchangers towared metal ion adsorption (copper, nickel, strontium and arsenic) was examined. The effect of different variables e.g. metal ion concentration, pH, contact time and temperature on the efficiency of the prepared ion exchangers was also investigated. FTIR spectra of the prepared ion exchangers showed new absorption bands at 1200 and 960 cm~(-1) of the C-O-P band as a result of phosphorylation and at 1400 and 820 cm~(-1) corresponding to the sulfonate group C-O-S of the sulfonated cotton stalks.
机译：研究了用作离子交换剂的棉秆的改性。将磷酸盐，磺酸盐和磷磺酸盐掺入粒径小于1.5 ml的棉秆中，可提高其吸收金属离子的效率。磷磺化棉秸秆的钠结合能力高于磷酸化和磺化棉秸秆。检查了制备的离子交换剂对金属离子（铜，镍，锶和砷）的吸附效率。不同变量的影响，例如还研究了金属离子浓度，pH，接触时间和温度对制备的离子交换剂效率的影响。制备的离子交换剂的FTIR光谱显示，由于磷酸化，在COP带的1200和960 cm〜（-1）处有新的吸收带，在1400和820 cm〜（-1）处对应于磺化的磺酸根COS。棉秆。

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