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首页> 外文期刊>Journal of Hazardous Materials >Porous chitosan/hydroxyapatite composite membrane for dyes static and dynamic removal from aqueous solution
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Porous chitosan/hydroxyapatite composite membrane for dyes static and dynamic removal from aqueous solution

机译：多孔壳聚糖/羟基磷灰石复合膜用于从水溶液中静态和动态去除染料

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摘要

The unique characteristics of Chitosan (CS) such as resource abundance, good biocompatibility, film-forming ability and sufficient sites (-NH2 and -OH) for adsorption of heavy metals or organic pollutants make CS-based membranes a promising membrane adsorbent. In this work, a porous Chitosan/Hydroxyapatite (CS/HA) membrane with a sponge-like surface and a three-dimensional interpenetrated porous structure of about mean pore size less than 10 mu m was developed. The most striking advantage of the proposed membrane lies on the integration of appreciably high adsorption capacity (as compared with current CS-based membranes, also 2.5 times and 4 times higher than that of non-porous CS/HA membrane and the commercially available activate carbon) and the high-speed dynamic dye removal (98% or even better in less than 15 min). Besides, the synthesis protocol for the proposed membrane is also much simpler, environmental-friendly and economical. Moreover, the proposed membrane also featured repeated dye removal (above 80% after 5 cycles of dynamic adsorption at dye concentration of 150 mg L-1). All the above advantages indicated the intriguing potential of the porous membrane in practical wastewater treatment. (C) 2017 Elsevier B.V. All rights reserved.
机译：壳聚糖（CS）的独特特性，例如资源丰富，良好的生物相容性，成膜能力以及足以吸附重金属或有机污染物的位置（-NH2和-OH），使得CS基膜成为一种很有前途的膜吸附剂。在这项工作中，开发了一种具有海绵状表面和三维渗透的多孔结构的壳聚糖/羟磷灰石（CS / HA）多孔膜，其平均孔径小于10微米。所提出的膜的最显着优势在于集成了相当高的吸附能力（与当前基于CS的膜相比，也比无孔CS / HA膜高2.5倍和4倍，并且市售的活性炭）和高速动态染料去除（不到15分钟即可达到98％甚至更好）。此外，所提出的膜的合成方案也更简单，环境友好且经济。此外，建议的膜还具有重复去除染料的功能（在染料浓度为150 mg L-1的动态吸附5个循环后，去除率达到80％以上）。所有上述优点表明了多孔膜在实际废水处理中的潜在潜力。 （C）2017 Elsevier B.V.保留所有权利。

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  • 来源
    《Journal of Hazardous Materials》 |2017年第15期|241-249|共9页
  • 作者

    Shi Chaoting; Lv Caizhi; Wu Lan; Hou Xiandeng;

  • 作者单位

    Sichuan Univ, Analyt & Testing Ctr, Chengdu 610064, Sichuan, Peoples R China;

    Sichuan Univ, Analyt & Testing Ctr, Chengdu 610064, Sichuan, Peoples R China;

    Sichuan Univ, Analyt & Testing Ctr, Chengdu 610064, Sichuan, Peoples R China;

    Sichuan Univ, Analyt & Testing Ctr, Chengdu 610064, Sichuan, Peoples R China|Sichuan Univ, Coll Chem, Chengdu 610064, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Chitosan; Hydroxyapatite; Porous membrane; Direct blue 15; Static adsorption; Dynamic removal;

    机译：壳聚糖;羟基磷灰石;多孔膜;直接蓝15;静态吸附;动态去除;

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