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Fruit waste-derived aerogels for the removal of dyes, heavy metals and oils in water: a review

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Abstract

Most fruit peels after harvest crops are intentionally discarded into landfills, resulting in the waste of carbon resources and environmental pollution. Since fruit waste is rich in cellulose, hemicellulose, and pectin, transforming fruit waste into ultralight and ultraporous aerogels can contribute to environmental mitigation. Here we review aerogel production from fruit waste with emphasis on fruit waste occurrence and composition, synthesis of aerogels, properties of aerogels, applications to water treatment, and economical aspects. Pretreatment, cross-linking, the drying process, and post-treatment modification are major steps that influence the porosity, hydrophobicity, surface area, and morphology of fruit waste-derived aerogels. Fruit waste-derived aerogels are recyclable, up to 15 times in the cases of dye and oil treatments.

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Acknowledgements

This research is funded by Foundation for Science and Technology Development Nguyen Tat Thanh University, Vietnam.

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There was no external funding for this study.

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NTTN Conceptualization; Data curation; Investigation; Methodology; Writing—original draft. TTTN Writing—review & editing; Data curation; Validation; Validation. DTCN Conceptualization; Writing—review & editing; Validation; Data curation; Supervision. TVT Conceptualization; Writing—review & editing; Validation; Data curation; Supervision; Project administration. All authors read and approved the final manuscript.

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Correspondence to Duyen Thi Cam Nguyen or Thuan Van Tran.

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The manuscript has not been published anywhere nor submitted to another journal. The manuscript is not currently being considered for publication in any another journal. All authors have been personally and actively involved in substantive work leading to the manuscript, and will hold themselves jointly and individually responsible for its content

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Nguyen, N.T.T., Nguyen, T.T.T., Nguyen, D.T.C. et al. Fruit waste-derived aerogels for the removal of dyes, heavy metals and oils in water: a review. Environ Chem Lett 22, 419–443 (2024). https://doi.org/10.1007/s10311-023-01667-2

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  • DOI: https://doi.org/10.1007/s10311-023-01667-2

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