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

School of Chemistry and Chemical Engineering

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

59 Citations (Scopus)

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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
Journal	Environmental Chemistry Letters
Early online date	19 Feb 2022
DOIs	https://doi.org/10.1007/s10311-022-01390-4
Publication status	Early online date - 19 Feb 2022

Keywords

Solar energy
wastewater treatment
photocatalysis
solar photo-oxidation
circular economy
recycling
catalysis
process design
optimisation

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/s10311-022-01390-4Licence: CC BY

Solar photo-oxidation of recalcitrant industrial wastewater: a review
Copyright 2022 the authors. This is an open access article published under a Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited
Final published version, 2.53 MBLicence: CC BY

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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T1 - Solar photo-oxidation of recalcitrant industrial wastewater: a review

AU - Tawfik, Ahmed

AU - Gar Alalm, Mohamed

AU - M. Awad, Hanem

AU - Islam, Muhammad

AU - Abdul Qyyum, Muhammad

AU - Al-Muhtaseb, Ala’a H.

AU - Osman , Ahmed I.

AU - Lee, Moonyong

PY - 2022/2/19

Y1 - 2022/2/19

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 - Solar energy

KW - wastewater treatment

KW - photocatalysis

KW - solar photo-oxidation

KW - circular economy

KW - recycling

KW - catalysis

KW - process design

KW - optimisation

U2 - 10.1007/s10311-022-01390-4

DO - 10.1007/s10311-022-01390-4

M3 - Review article

SN - 1610-3661

JO - Environmental Chemistry Letters

JF - Environmental Chemistry Letters

ER -

Solar photo-oxidation of recalcitrant industrial wastewater: a review

Abstract

Keywords

UN SDGs

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