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Effective Removal of Dyes from Aqueous Solutions by a Gelatin Hydrogel

机译：通过明胶水凝胶有效地从水溶液中除去染料

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摘要

Adsorptive removal of dyes from industrial wastewater has attracted intensive interests in recent years. Hydrogels is a kind of promising adsorbent in dyes removal owing to the simple synthesis and convenient application. A biodegradable and recyclable gelatin hydrogel (GH) was synthesized by a convenient approach in this work. The as-prepared GH was used to remove dyes in aqueous solution. The results indicated that the GH had excellent adsorption capacity for various dyes and the maximum adsorption capacities of crystalline violet (CV), methyl orange (MO), acid fuchsin (AF), congo red (CR), malachite green (MG), and methylene blue (MB) were 138.89 mg/g, 72.63 mg/g, 66.29 mg/g, 64.84 mg/g, 64.64 mg/g, and 60.32 mg/g, respectively. Moreover, the dye removal efficiency was still more than 60% after five consecutive adsorption-desorption cycles and the shape of the GH kept well. Therefore, GH can be used as an environmentally friendly and effective adsorbent to remove virous dyes from printing and dyeing wastewater.
机译：近年来，来自工业废水的染料的吸附除去了密集的利益。由于简单的合成和方便的应用，水凝胶是一种在染料中除去的有希望的吸附剂。通过这种作品中的方便方法合成可生物降解和可回收的明胶水凝胶（GH）。用制备的GH用于除去水溶液中的染料。结果表明，GH具有优异的各种染料的吸附能力和结晶紫（CV），甲基橙（Mo），酸紫红色（AF），刚果红（Cr），孔雀石绿色（Mg）和的最大吸附能力亚甲基蓝（MB）分别为138.89mg / g，72.63mg / g，66.29mg / g，64.84mg / g，64.64mg / g，60.32mg / g和60.32mg / g。此外，在连续五次吸附 - 解吸循环和GH的形状保持良好后，染料去除效率仍然大于60％以上。因此，GH可用作环保和有效的吸附剂，以从印刷和染色废水中去除大性染料。

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  • 来源
    《Journal of Polymers and the Environment》 |2021年第11期|3497-3508|共12页
  • 作者

    Ren Jie; Wang Xuemiao; Zhao Lingling; Li Meng; Yang Wu;

  • 作者单位

    Northwest Normal Univ Minist Educ Ecol Environm Key Lab Bioelectrochem & Environm Anal Gansu Key Lab Polymer Mat Chem & Chem Engn Coll Lanzhou 730070 Peoples R China;

    Northwest Normal Univ Minist Educ Ecol Environm Key Lab Bioelectrochem & Environm Anal Gansu Key Lab Polymer Mat Chem & Chem Engn Coll Lanzhou 730070 Peoples R China;

    Northwest Normal Univ Minist Educ Ecol Environm Key Lab Bioelectrochem & Environm Anal Gansu Key Lab Polymer Mat Chem & Chem Engn Coll Lanzhou 730070 Peoples R China;

    Northwest Normal Univ Minist Educ Ecol Environm Key Lab Bioelectrochem & Environm Anal Gansu Key Lab Polymer Mat Chem & Chem Engn Coll Lanzhou 730070 Peoples R China;

    Northwest Normal Univ Minist Educ Ecol Environm Key Lab Bioelectrochem & Environm Anal Gansu Key Lab Polymer Mat Chem & Chem Engn Coll Lanzhou 730070 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Adsorption; Desorption; Biodegradation; Gelatin hydrogels;

    机译：吸附;解吸;生物降解;明胶水凝胶;

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