• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>journal of applied polymer science >Crop resides as lon‐exchange materials. Treatment of soybean hull and sugar beet fiber (pulp) with epichlorohydrin to improve cation‐exchange capacity and physical stability
【24h】

Crop resides as lon‐exchange materials. Treatment of soybean hull and sugar beet fiber (pulp) with epichlorohydrin to improve cation‐exchange capacity and physical stability

机译：Crop resides as lon‐exchange materials. Treatment of soybean hull and sugar beet fiber (pulp) with epichlorohydrin to improve cation‐exchange capacity and physical stability

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

摘要

AbstractIon exchange systems for the treatment of process water or wastewater may benefit by the use of inexpensive, disposable exchange materials before, or in place of, conventional regenerable exchange resins. Various agricultural by‐products have been proposed as suitable exchangers for this role, but they generally fail to have adequate capacity and physical stability for most applications. Two by‐products, soybean hull and sugar beet fiber, were found to have enhanced cation‐exchange capacity and stability upon treatment with epichlorophydrin and base. Exchange capacity was determined by measuring calcium binding. Physical stability was judged by three different aqueous extraction regimens. The most efficacious and economical reaction conditions found were: soybean hull and sugar beet fiber hydrated with water at a water‐to‐solids ratio of 6.4 : 1 and 8 : 1 (v/w), respectively, and epichlorohydrin applied at a 0.3 : 1 (v/w) ratio, for 6 h at room temperature. The resultant cross‐linked materials had cation‐exchange capacities of approximately 0.9 (soybean hull) and 1.3 (sugar beet fiber) meq/g dry weight. These epichlorohydrin‐treated agricultural by‐products may serve as cost‐effective, multivalent‐cation exchanges. © 199

著录项

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