Elimination of rhodamine B from textile wastewater using nanoparticle photocatalysts: A review for sustainable approaches

• Published in: Chemosphere (Oxford) 2022-01, Vol.287, p.132162-132162, Article 132162
• Main Authors: Al-Buriahi, Abdullah Khaled, Al-Gheethi, Adel Ali, Senthil Kumar, Ponnusamy, Radin Mohamed, Radin Maya Saphira, Yusof, Hanita, Alshalif, Abdullah Faisal, Khalifa, Nasradeen A.
• Format: Article
• Language: English
• Subjects: Factors; Nano-sized photocatalysts; Photocatalytic degradation; Python; Rhodamine B; ZnO nanoparticles
• ISSN: 0045-6535; 1879-1298
• DOI: 10.1016/j.chemosphere.2021.132162

Rhodamine B (RhB) dye used in the textile industries is associated with carcinogenic and neurotoxic effects with a high potential to cause a variety of human diseases. Semiconductor photocatalysts synthesised through agriculture waste extracts exhibited high efficiency for RhB removal. The current review aimed to explore the efficiency and mechanism of RhB degradation using different photocatalysts that have been used in recent years, as well as the effect of various factors on the removal process. Zinc oxide nanoparticles (ZnO NPs) synthesised from plant extract is the most effective for the RhB degradation with the efficiency reaching 100% after 210 min. The photocatalysis process depends on the pH because pH changes the balance of water dissociation, which impacts the formation of hydroxyl radicals and the surface load of the catalyst. Analysis using Jupyter Notebook revealed a strong correlation between the concentration of ZnO NPs and the photocatalysis efficiency (R = 0.72). These findings reveal that man-sized photocatalysts have a high potential for removing RhB from the wastewater. [Display omitted] •The photocatalysis of Rhodamine b with biosynthesized nano-size-photocatalysts was reviewed.•The structure of ZnO NPs synthesised in different plant extract was described.•Jupyter notebook using Python language revealed a strong correlation between the factors affecting RhB degradation.•It was appeared that nano-sized photocatalysts have high potential for the removing RhB from the wastewater.