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. 2023 Jan;30(4):9103-9126.
doi: 10.1007/s11356-022-24089-z. Epub 2022 Nov 28.

Design of biomass-based composite photocatalysts for wastewater treatment: a review over the past decade and future prospects

Marina M G Pastre  1 , Deivisson Lopes Cunha  2 , Marcia Marques  2
Affiliations

Design of biomass-based composite photocatalysts for wastewater treatment: a review over the past decade and future prospects

Marina M G Pastre et al. Environ Sci Pollut Res Int. 2023 Jan.

Abstract

This investigation applied a systematic review approach on publications covering primary data during 2012-2022 with a focus on photocatalytic degradation of pollutants in aqueous solution by composite materials synthesized with biomass and, at least, TiO2 and/or ZnO semiconductors to form biomass-based composite photocatalysts (BCPs). After applying a set of eligibility criteria, 107 studies including 832 observations/entries were analyzed. The average removal efficiency and degradation kinetic rate reported for all model pollutants and BCPs were 77.5 ± 21.5% and 0.064 ± 0.174 min-1, respectively. Principal component analysis (PCA) was applied to analyze BCPs synthesis methods, experimental conditions, and BCPs' characteristics correlated with the removal efficiency and photodegradation kinetics. The relevance of adsorption processes on the pollutants' removal efficiency was highlighted by PCA applied to all categories of pollutants (PCA_pol). The PCA applied to textile dyes (PCA_dyes) and pharmaceutical compounds (PCA_pharma) also indicate the influence of variables related to the composite synthesis (i.e., thermal treatment and time spent on BCPs synthesis) and photocatalytic experimental parameters (catalyst concentration, pollutant concentration, and irradiation time) on the degradation kinetic accomplished by BCPs. Furthermore, the multivariate analysis (PCA_pol) revealed that the specific surface area and the narrow band gap are key characteristics for BCPs to serve as a competitive photocatalyst. The effect of scavengers on pollutants' degradation and the recyclability of BCPs are also discussed, as necessary aspects for scalability trends. Further investigations are recommended to compare the performance of BCPs and commercial catalysts, as well as to assess the costs to treat real wastewater.

Keywords: Biomass sources; Multivariate data analysis; Photocatalysts; Pollutants removal; TiO2; Water treatment; ZnO.

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References

    1. Abarna B, Preethi T, Rajarajeswari GR (2019) Lemon peel guided sol-gel synthesis of visible light active nano zinc oxide. J Environ Chem Eng 7:1–7. https://doi.org/10.1016/j.jece.2018.10.056 - DOI
    1. Abdi H, Williams L (2010) Principal component analysis ´. Wires Comp Stat 2:433–459. https://doi.org/10.1002/wics.101 - DOI
    1. Ahmad M, Rajapaksha AU, Lim JE et al (2014) Biochar as a sorbent for contaminant management in soil and water: A review. Chemosphere 99:19–33. https://doi.org/10.1016/j.chemosphere.2013.10.071 - DOI
    1. Ahmadi S, Ganjidoust H (2021) Using banana peel waste to synthesize BPAC/ZnO nanocomposite for photocatalytic degradation of Acid Blue 25: Influential parameters, mineralization, biodegradability studies. J Environ Chem Eng 9:106010. https://doi.org/10.1016/j.jece.2021.106010 - DOI
    1. Ahmaruzzaman M (2021) Biochar based nanocomposites for photocatalytic degradation of emerging organic pollutants from water and wastewater. Mater Res Bull 140:111262. https://doi.org/10.1016/j.materresbull.2021.111262 - DOI

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