• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Fuel >Performance of surfactant modified zeolite/hydrous zirconium oxide as a multi-functional adsorbent
【24h】

Performance of surfactant modified zeolite/hydrous zirconium oxide as a multi-functional adsorbent

机译：表面活性剂改性的沸石/水合氧化锆作为多功能吸附剂的性能

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

Surfactant modified zeolite from coal fly ash (SMZFA) was previously developed as a multi-functional adsorbent. But its ability to capture anionic pollutants depends on the type and composition of coal fly ash and the synthesis process of zeolite (ZFA), the precursor of SMZFA, produces waste alkaline solution. To tackle these problems, the composite of zeolite and hydrous zirconia (ZFA/HZ) was synthesized by neutralizing waste alkaline solution with zirconium salt and was then modified with the surfactant of hexadecyltrimethylammonium to develop a new type of multi-functional adsorbent, SMZFA/HZ. The obtained materials were evaluated for their performances to sequester multiple classes of pollutants from water. The target pollutants include cationic pollutant (ammonium), anionic pollutant (phosphate) and organic pollutants (humic acid and bisphenol A). Results showed that, when compared with ZFA, ZFA/HZ had 3 times higher adsorption capacity for phosphate, and more negative charges on both external (by 16.9%) and internal surfaces (by 12.3%). For both ZFA and ZFA/HZ, modification with surfactant reduced the capacity for uptake of ammonium by less than 10% and the reduction was trivial for phosphate. However, surfactant modification greatly augmented the adsorption performances for humic acid and bisphenol A. Compared with SMZFA, SMZFA/HZ was found to have higher potential for the retention of each pollutant and is thus a more excellent versatile adsorbent. (C) 2017 Elsevier Ltd. All rights reserved.
机译：粉煤灰表面活性剂改性的沸石（SMZFA）以前被开发为多功能吸附剂。但是其捕获阴离子污染物的能力取决于粉煤灰的类型和组成以及SMZFA的前体沸石（ZFA）的合成过程会产生碱性废液。为了解决这些问题，通过用锆盐中和废碱溶液来合成沸石和含水氧化锆的复合物（ZFA / HZ），然后用十六烷基三甲基铵的表面活性剂对其进行改性，从而开发出一种新型的多功能吸附剂SMZFA / HZ。 。评价所获得的材料的性能，以从水中隔离多类污染物。目标污染物包括阳离子污染物（铵），阴离子污染物（磷酸盐）和有机污染物（腐殖酸和双酚A）。结果表明，与ZFA相比，ZFA / HZ对磷酸盐的吸附能力高3倍，并且其内表面和内表面的负电荷更多（分别为16.9％和12.3％）。对于ZFA和ZFA / HZ而言，用表面活性剂进行改性会使氨的吸收能力降低不到10％，而对于磷酸盐而言，这种降低是微不足道的。然而，表面活性剂的改性大大提高了对腐殖酸和双酚A的吸附性能。与SMZFA相比，SMZFA / HZ具有更高的保留每种污染物的潜力，因此是一种更加出色的通用吸附剂。 （C）2017 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Fuel》 |2017年第1期|411-418|共8页
  • 作者

    Xie Qiang; Lin Yan; Wu Deyi; Kong Hainan;

  • 作者单位

    Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China|Shanghai Jiao Tong Univ, Sch Agr & Biol, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Adsorption; Coal fly ash; Surfactant; Zeolite; Zirconium;

    机译：吸附;粉煤灰;表面活性剂;沸石;锆;

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