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交联壳聚糖包膜对黄铁矿化学氧化的抑制

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石太宏, 程乾坤, 张红云, 周毅, 杨娣, 叶进鹏. 交联壳聚糖包膜对黄铁矿化学氧化的抑制[J]. 环境工程学报, 2016, 10(10): 5573-5578. doi: 10.12030/j.cjee.201505189
引用本文: 石太宏, 程乾坤, 张红云, 周毅, 杨娣, 叶进鹏. 交联壳聚糖包膜对黄铁矿化学氧化的抑制[J]. 环境工程学报, 2016, 10(10): 5573-5578. doi: 10.12030/j.cjee.201505189
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SHI Taihong, CHENG Qiankun, ZHANG Hongyun, ZHOU Yi, YANG Di, YE Jinpeng. Suppression of pyrite chemical oxidation by cross-linked chitosan coating[J]. Chinese Journal of Environmental Engineering, 2016, 10(10): 5573-5578. doi: 10.12030/j.cjee.201505189
Citation: SHI Taihong, CHENG Qiankun, ZHANG Hongyun, ZHOU Yi, YANG Di, YE Jinpeng. Suppression of pyrite chemical oxidation by cross-linked chitosan coating[J]. Chinese Journal of Environmental Engineering, 2016, 10(10): 5573-5578. doi: 10.12030/j.cjee.201505189
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交联壳聚糖包膜对黄铁矿化学氧化的抑制

  • 1.

    中山大学环境科学与工程学院, 广州 510275

  • 2.

    广东省环境污染控制与修复技术重点实验室, 广州 510275

  • 基金项目:

    广东省环境污染控制与修复技术重点实验室资助项目

  • 中图分类号: X506

Suppression of pyrite chemical oxidation by cross-linked chitosan coating

  • 1.

    School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China

  • 2.

    Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China

  • Fund Project:

  • 摘要: 通过测试交联壳聚糖包膜处理后的黄铁矿物表面润湿性的改变以及采用扫面电镜和红外光谱等表征方法，证明在样品矿物表面形成了一层保护膜；通过采用加速浸泡法处理包膜前后的黄铁矿，探讨钝化剂浓度、pH、氧化条件等因素对钝化效果的影响，结果表明与空白样相比，经包膜处理的黄铁矿的化学氧化程度降低了50%~70%。
    Abstract: The change of sample surface wettability was studied by testing the contact angle and the surface free energy components. Scanning electron microscopy(SEM) and Fourier transform infrared spectroscopy(FT-IR) were used to analyze the surface of pyrite.Results showed that the characteristic absorption peaks of chitosan were found in the infrared spectrum of the coatedsamples,indicating that a chitosan film had formed on the tailing surface.Each sample,original or coated with cross-linked chitosan, was exposed to aqueous solution with different oxidants for specified oxidation periods. The potential of cross-linked chitosan coatings to inhibit oxidation was studied through accelerated immersion experiments.The effect of passivating agent concentration,soaking time, and pH on chitosan film anti-oxidation were studied.The results show that,compared to the original sample, the oxidation of pyrite coated with cross-linked chitosan was reduced by 50% to 70%.
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出版历程
  • 收稿日期:  2015-07-03
  • 刊出日期:  2016-10-20

交联壳聚糖包膜对黄铁矿化学氧化的抑制

  • 1.  中山大学环境科学与工程学院, 广州 510275
  • 2.  广东省环境污染控制与修复技术重点实验室, 广州 510275
  • 收稿日期:  2015-07-03
基金项目:

广东省环境污染控制与修复技术重点实验室资助项目

摘要: 通过测试交联壳聚糖包膜处理后的黄铁矿物表面润湿性的改变以及采用扫面电镜和红外光谱等表征方法，证明在样品矿物表面形成了一层保护膜；通过采用加速浸泡法处理包膜前后的黄铁矿，探讨钝化剂浓度、pH、氧化条件等因素对钝化效果的影响，结果表明与空白样相比，经包膜处理的黄铁矿的化学氧化程度降低了50%~70%。

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