SciELO - Scientific Electronic Library Online

 
vol.118 issue1-2Scope, trends and opportunities for socio-hydrology research in Africa: A bibliometric analysisPhytochemicals and in silico investigations of Sudanese roselle author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Article

Indicators

Related links

  • On index processCited by Google
  • On index processSimilars in Google

Share


South African Journal of Science

On-line version ISSN 1996-7489
Print version ISSN 0038-2353

Abstract

MAIUNGA, Sibongile M. et al. Visible light photodegradation of methyl orange and Escherichia coli O157:H7 in wastewater. S. Afr. j. sci. [online]. 2022, vol.118, n.1-2, pp.1-11. ISSN 1996-7489.  http://dx.doi.org/10.17159/sajs.2022/10938.

Water pollution due to dyes and pathogens is problematic worldwide, and the disease burden is higher in low-income countries where water treatment facilities are usually inadequate. Thus the development of low-cost techniques for the removal of dyes and pathogens in aquatic systems is critical for safeguarding human and ecological health. In this work, we report the fabrication and use of a photocatalyst derived from waste from coal combustion in removing dyes and pathogens from wastewater. Higher TiO2 loading of the photocatalyst increased the removal efficiency for methyl orange (95.5%), and fluorine-doping improved the disinfection efficacy from 76% to 95% relative to unmodified material. Overall, the work effectively converted hazardous waste into a value-added product that has potential in point-of-use water treatment. Future research should focus on upscaling the technique, investigating the fate of the potential of the photocatalysts for multiple reuse, and the recovery of TiO2 in treated water. SIGNIFICANCE: • The study provides a pathway for the fabrication of a value-added product from coal fly ash waste. • The use of the proposed nanocomposite material for wastewater treatment represents a potentially affordable, simple, and sustainable technology for point-of-use water treatment.

Keywords : catalysis; environmental remediation; pollution; porous materials; wastewater; zeolite.

        · text in English     · English ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License