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首页> 美国卫生研究院文献>Polymers >Minimizing Freshwater Consumption in the Wash-Off Step in Textile Reactive Dyeing by Catalytic Ozonation with Carbon Aerogel Hosted Bimetallic Catalyst
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Minimizing Freshwater Consumption in the Wash-Off Step in Textile Reactive Dyeing by Catalytic Ozonation with Carbon Aerogel Hosted Bimetallic Catalyst

机译：碳气凝胶担载的双金属催化剂通过催化臭氧化使纺织品反应性染色中的洗净步骤中的淡水消耗最小化

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In textile reactive dyeing, dyed fabrics have to be rinsed in the wash-off step several times to improve colorfastness. Thus, the multiple rinsing processes drastically increase the freshwater consumption and meanwhile generate massive waste rinsing effluents. This paper addresses an innovative alternative to recycle the waste effluents to minimize freshwater consumption in the wash-off step. Accordingly, catalytic ozonation with a highly effective catalyst has been applied to remedy the waste rinsing effluents for recycling. The carbon aerogel (CA) hosted bimetallic hybrid material (Ag–Fe2O3@CA) was fabricated and used as the catalyst in the degradation of residual dyes in the waste rinsing effluents by ozonation treatments. The results indicate the participation of Ag–Fe2O3@CA had strikingly enhanced the removal percentage of chemical oxidation demand by 30%. In addition, it has been validated that waste effluents had been successfully reclaimed after catalytic ozonation with Ag–Fe2O3@CA. They could be additionally reused to reduce freshwater consumption in the wash-off step, but without sacrificing the color quality of corresponding fabrics in terms of color difference and colorfastness. This study may be the first to report the feasibility of catalytic ozonation in minimization of freshwater consumption in the wash-off step in textile reactive dyeing.
机译：在纺织品反应性染色中，染色的织物必须在漂洗步骤中漂洗几次，以提高色牢度。因此，多次漂洗过程极大地增加了淡水消耗，同时产生了大量的废水漂洗废水。本文提出了一种创新的替代方案，可循环利用废水，以最大程度减少冲洗步骤中的淡水消耗。因此，已经使用高效催化剂进行催化臭氧化以补救废物冲洗废水以供循环使用。制备了以碳气凝胶（CA）为主体的双金属杂化材料（Ag-Fe2O3 @ C​​A），并用作催化剂通过臭氧处理降解降解漂洗废水中的残留染料。结果表明，Ag-Fe2O3 @ C​​A的参与显着提高了化学氧化需求的去除率30％。此外，已经验证了用Ag-Fe2O3 @ C​​A催化臭氧氧化后，废料已成功回收。它们可以额外地重复使用以减少冲洗步骤中的淡水消耗，但不会在色差和色牢度方面牺牲相应织物的颜色质量。这项研究可能是第一个报告催化臭氧化技术在减少纺织品活性染料冲洗步骤中的淡水消耗量方面的可行性的研究。

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