• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental chemistry letters >Synthesis of a three-dimensional network sodium alginate-poly(acrylic acid)/attapulgite hydrogel with good mechanic property and reusability for efficient adsorption of Cu2+ and Pb2+
【24h】

Synthesis of a three-dimensional network sodium alginate-poly(acrylic acid)/attapulgite hydrogel with good mechanic property and reusability for efficient adsorption of Cu2+ and Pb2+

机译：用良好的机械性能合成三维网络藻酸钠 - 聚（丙烯酸）/乙烯酸盐水凝胶，可重复用来Cu2 +和Pb2 +的有效吸附

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

Water pollution caused by heavy metals has dramatically impacted ecosystems in recent years. For instance, 45.4% of lakes in China are in the category of moderate to high risk of toxic metal pollution, due to excessive mining. There is, therefore, a need for efficient techniques of metal decontamination. Hydrogels are gaining interest as heavy metal adsorbents because of their easy separation, but hydrogel applications are limited due to their poor mechanical property. Here we solve this problem by introducing natural attapulgite into the sodium alginate-poly(acrylic acid) semi-interpenetrating polymer network of the hydrogel. Results show that the compressive stress of the hydrogel with 10% attapulgite, of 1.230 Mpa, was 4.1 times higher than that of pure hydrogel, of 0.299 MPa. The adsorption capacity of hydrogel with 10% attapulgite was high, of 272.8 mg/g for Cu2+ and 391.7 mg/g for Pb2+. Even after five cycles of adsorption, the hydrogel with 10% attapulgite still adsorbs 261.7 mg/g Cu2+ and 368.1 mg/g Pb2+. Our findings thus reveal that network-structured sodium alginate-poly(acrylic acid)/attapulgite hydrogel holds great potential as an efficient and recyclable adsorbent for heavy metal removal.
机译：近年来，由重金属引起的水污染显着影响了生态系统。例如，由于挖掘过度采矿，中国45.4％的湖泊在中等至高无程度的有毒金属污染风险的范畴。因此，需要有效的金属净化技术。由于它们易于分离，水凝胶是作为重金属吸附剂的兴趣，但由于其机械性质差，水凝胶应用受到限制。在这里，我们通过将天然藤酰基石进入水凝胶的藻酸钠 - 聚（丙烯酸）半互穿的聚合物网络来解决该问题。结果表明，纯水凝胶为1.230MPa，水凝胶的压缩应力为1.230MPa，纯水凝胶为0.299MPa。水凝胶的吸附能力为10％乙烯酸盐，Cu 2 +和391.7mg / g的272.8mg / g为Pb2 +。甚至在吸附五个循环后，水凝胶仍然具有10％的乙烯酸盐仍然吸附261.7mg / g Cu2 +和368.1mg / g Pb2 +。因此，我们的研究结果表明，网络结构化藻酸钠 - 聚（丙烯酸）/乙烯酸钠水凝胶具有高效且可回收的吸附剂的巨大潜力，用于重金属去除。

著录项

  • 来源
    《Environmental chemistry letters》 |2018年第2期|共6页
  • 作者

    Mao Xinyou; Wang Lan; Gu Shiqing; Duan Yanyan; Zhu Yunqing; Wang Chuanyi; Lichtfouse Eric;

  • 作者单位

    Chinese Acad Sci Xinjiang Tech Inst Phys &

    Chem Lab Environm Sci &

    Technol Key Lab Funct Mat &

    Devices Special Environm Urumqi 830011 Peoples R China;

    Chinese Acad Sci Xinjiang Tech Inst Phys &

    Chem Lab Environm Sci &

    Technol Key Lab Funct Mat &

    Devices Special Environm Urumqi 830011 Peoples R China;

    Chinese Acad Sci Xinjiang Tech Inst Phys &

    Chem Lab Environm Sci &

    Technol Key Lab Funct Mat &

    Devices Special Environm Urumqi 830011 Peoples R China;

    Chinese Acad Sci Xinjiang Tech Inst Phys &

    Chem Lab Environm Sci &

    Technol Key Lab Funct Mat &

    Devices Special Environm Urumqi 830011 Peoples R China;

    Shaanxi Univ Sci &

    Technol Xian 710021 Shaanxi Peoples R China;

    Chinese Acad Sci Xinjiang Tech Inst Phys &

    Chem Lab Environm Sci &

    Technol Key Lab Funct Mat &

    Devices Special Environm Urumqi 830011 Peoples R China;

    Aix Marseille Univ Coll France CNRS INRA IRD Europole Mediterraneen Arbois Cerege F-13545 Aix En Provence France;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境化学;
  • 关键词

    Hydrogel; Attapulgite; Pb2+; Cu2+; Adsorption; Alginate;

    机译：水凝胶;乙腈;pb2 +;cu2 +;吸附;藻酸盐;

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