Solar photo-oxidation of recalcitrant industrial wastewater: a review
Ahmed TawfikWater Pollution Research Department, National Research Centre, Dokki, Giza, 12622, EgyptMohamed Gar AlalmDepartment of Chemical Engineering, Polytechnic Montreal, Montreal, QC, H3C 3A7, CanadaHanem M. AwadDepartment Tanning Materials and Leather Technology and Regulatory Toxicology Lab, Centre of Excellence, National Research Centre, El-Behouth St., Dokki, Giza, 12622, EgyptMuhammad IslamSchool of Chemical Engineering, Yeungnam University, Gyeongsan, 712-749, Republic of KoreaMuhammad Abdul QyyumDepartment of Petroleum and Chemical Engineering, College of Engineering, Sultan Qaboos University, Muscat, OmanAla’a H. Al‐MuhtasebDepartment of Petroleum and Chemical Engineering, College of Engineering, Sultan Qaboos University, Muscat, OmanAhmed I. OsmanSchool of Chemistry and Chemical Engineering, Queen’s University Belfast, Belfast, BT9 5AG, Northern Ireland, UKMoonyong LeeSchool of Chemical Engineering, Yeungnam University, Gyeongsan, 712-749, Republic of Korea
2022en
ABI
Аннотация
Abstract Conventional methods to clean wastewater actually lead to incomplete treatments, calling for advanced technologies to degrade recalcitrant pollutants. Herein we review solar photo-oxidation to degrade the recalcitrant contaminants in industrial wastewater, with focus on photocatalysts, reactor design and the photo-Fenton process. We discuss limitations due to low visible-light absorption, catalyst collection and reusability, and production of toxic by-products. Photodegradation of refractory organics by solar light is controlled by pH, photocatalyst composition and bandgap, pollutant properties and concentration, irradiation type and intensity, catalyst loading, and the water matrix.
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