Solar photo-oxidation of recalcitrant industrial wastewater: a review

Ahmed Tawfik; Mohamed Gar Alalm; Hanem M. Awad; Muhammad Islam; Muhammad Abdul Qyyum; Ala’a H. Al-Muhtaseb; Ahmed I. Osman; Moonyong Lee

doi:10.1007/s10311-022-01390-4

Solar photo-oxidation of recalcitrant industrial wastewater: a review

Ahmed Tawfik^*, Mohamed Gar Alalm, Hanem M. Awad, Muhammad Islam, Muhammad Abdul Qyyum^*, Ala’a H. Al-Muhtaseb, Ahmed I. Osman^*, Moonyong Lee

^*Corresponding author for this work

Petroleum and Chemical Engineering

Research output: Contribution to journal › Review article › peer-review

49 Citations (Scopus)

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.

Original language	English
Pages (from-to)	1839-1862
Number of pages	24
Journal	Environmental Chemistry Letters
Volume	20
Issue number	3
DOIs	https://doi.org/10.1007/s10311-022-01390-4
Publication status	Published - Jun 2022

Keywords

Full-scale applications
Process optimization
Recalcitrant pollutants
Solar photo-oxidation

ASJC Scopus subject areas

Environmental Chemistry

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10.1007/s10311-022-01390-4

Cite this

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title = "Solar photo-oxidation of recalcitrant industrial wastewater: a review",

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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AU - Alalm, Mohamed Gar

AU - Awad, Hanem M.

AU - Islam, Muhammad

AU - Qyyum, Muhammad Abdul

AU - Al-Muhtaseb, Ala’a H.

AU - Osman, Ahmed I.

AU - Lee, Moonyong

PY - 2022/6

Y1 - 2022/6

N2 - 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.

AB - 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.

KW - Full-scale applications

KW - Process optimization

KW - Recalcitrant pollutants

KW - Solar photo-oxidation

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Solar photo-oxidation of recalcitrant industrial wastewater: a review

Abstract

Keywords

ASJC Scopus subject areas

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