Studies on Decolorization of Textile Dyeing Rinse Wastewaters in Solar Photocatalytic Reactors

m-Cresol containing wastewater has generally become a globally environmental issue due to its refractory and high toxicity towards plants, animals and human being. The development of m-cresol related industries increases the risk of excessive m-cresol discharge, making high efficiency methods to treat m-cresol an urgent topic in both economic and environmental aspects. This review focuses on the chemical treatment methods of m-cresol wastewater, including chemical adsorption, photocatalytic degradation, electrocatalytic degradation and catalytic wet oxidation. The efficiency, cost and process optimization of different methods are discussed in detail. Chemical adsorption is convenient but has relatively low efficiency. Photocatalytic degradation is an easily operated technology with high efficiency, but the selection of catalyst is too limited and the cost of light source is relatively high. Electrocatalytic degradation is time-saving but energy-intensive, and operational difficulty brings a barrier to industrialization. Catalytic wet oxidation (CWO) is highly effective and easily modified, but the performance and stability of catalysts are still very moderate. Following this, the selection and application of different methods regarding the requirement of actual environment are analyzed. Finally, a perspective on the opportunities and development for efficient m-cresol removal method is given.

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Chemical removal of m-cresol: a critical review

Yang

Zhu

et al. 2021

Reviews in Chemical Engineering

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Studies on Decolorization of Textile Dyeing Rinse Wastewaters in Solar Photocatalytic Reactors

Abstract: Two ‘Water Fountain Solar Photocatalytic Reactors’ of trapezoidal and circular configurations were developed and the influence of flow rate on solar photocatalytic decolorization of simulated textile dyeing rinse wastewaters was studied in the range of 1.5L h

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Chemical removal of m-cresol: a critical review

Chemical removal of m-cresol: a critical review

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