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首页> 外文期刊>Environmental Science and Pollution Research >ADMI color and toxicity reductions in raw textile mill effluent and dye mixtures by TiO2/UV is limited by presence of vat dyes
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ADMI color and toxicity reductions in raw textile mill effluent and dye mixtures by TiO2/UV is limited by presence of vat dyes

机译：Admi Color和毒性减少原料纺织磨坊流出物和TiO2 / UV的染料混合物受增值税染料的限制

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Full-scale application of heterogeneous photocatalysis for industrial wastewater treatment remains a challenge because of the complex nature of these matrices and the potential to form toxic by-products during treatment. A recent unsuccessful attempt to find adequate conditions for TiO2/UV treatment of a cotton dyeing textile mill led to this study on the treatability of mixtures of the dyes used in the greatest amounts at the mill and therefore most likely to be present in mill effluent. Four reactive and three vat dyes were mixed in different combinations and treated (10 mg/L of each dye, 0.5 mg/L TiO2, pH 4) to evaluate the influence of the different dyes on ADMI color, chemical oxygen demand (COD), and acute toxicity. While ADMI color removal was similar in all dye mixtures, COD removal was higher when vat dyes were absent. When treated individually, vat dyes exhibited greater recalcitrance, with no ADMI color removal and COD removals of less than 30%. Toxicity to Daphnia similis was decreased or eliminated from dye mixtures that exhibited the highest COD removals and corresponded to those in which reactive dyes were partially degraded. For raw textile mill effluent, photocatalysis reduced but did not eliminate treated effluent toxicity (EC50 = 26.8%).
机译：由于这些矩阵的复杂性和在治疗过程中形成有毒副产物的潜力，因此仍然是产业废水处理的非均相光催化的应用仍然是挑战。最近对棉花染色厂的TiO2 /紫外线治疗的适当条件进行了最近的不成功的尝试导致了该研究的研究，该研究是在研磨机中最多使用的染料混合物的处理，因此最有可能存在于磨坊流出物中。将四种反应性和三个VAT染料混合在不同的组合中，并处理（每种染料10mg / L，0.5mg / L TiO 2，pH 4），以评估不同染料对Admi颜色，化学需氧量（COD）的影响，和急性毒性。虽然ADMI颜色在所有染料混合物中类似的染色混合物相似，但是当不存在vat染料时，鳕鱼去除较高。当单独处理时，VAT染料表现出更大的核批量，没有ADMI颜色去除和COD去除小于30％。对Daphnia Similis的毒性从显示出最高鳕鱼去除的染料混合物中减少或消除，与那些反应染料部分降解的染料混合物。对于原料纺织厂流出物，光催化减少但未消除处理过的废水毒性（EC50 = 26.8％）。

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