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Gut & Microbiome
Nanoplastics
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Adsorption–desorption behavior of malachite green by potassium permanganate pre-oxidation polyvinyl chloride microplastics
Environmental Technology & Innovation2023
25 citations
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Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Score: 45
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0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Siqi Liang,
Kangkang Wang,
Kefu Wang,
Kefu Wang,
Kangkang Wang,
Kefu Wang,
Kangkang Wang,
Siqi Liang,
Siqi Liang,
Kefu Wang,
Kefu Wang,
Siqi Liang,
Kefu Wang,
Kangkang Wang,
Kangkang Wang,
Kangkang Wang,
Kangkang Wang,
Wei Wang
Kefu Wang,
Changyan Guo,
Kangkang Wang,
Kangkang Wang,
Kangkang Wang,
Kangkang Wang,
Kefu Wang,
Kefu Wang,
Kangkang Wang,
Siqi Liang,
Yaoyao Chen,
Yaoyao Chen,
Wei Wang
Siqi Liang,
Wei Wang
Wei Wang
Kangkang Wang,
Wei Wang
Kefu Wang,
Kefu Wang,
Kefu Wang,
Kefu Wang,
Wei Wang
Kefu Wang,
Kangkang Wang,
Siqi Liang,
Changyan Guo,
Changyan Guo,
Changyan Guo,
Siqi Liang,
Siqi Liang,
Changyan Guo,
Siqi Liang,
Siqi Liang,
Siqi Liang,
Wei Wang
Wei Wang
Kefu Wang,
Wei Wang
Kangkang Wang,
Wei Wang
Wei Wang
Siqi Liang,
Siqi Liang,
Siqi Liang,
Siqi Liang,
Siqi Liang,
Siqi Liang,
Siqi Liang,
Siqi Liang,
Siqi Liang,
Siqi Liang,
Changyan Guo,
Kefu Wang,
Changyan Guo,
Changyan Guo,
Wei Wang
Wei Wang
Changyan Guo,
Changyan Guo,
Wei Wang
Changyan Guo,
Wei Wang
Siqi Liang,
Changyan Guo,
Siqi Liang,
Changyan Guo,
Changyan Guo,
Wei Wang
Wei Wang
Wei Wang
Wei Wang
Wei Wang
Changyan Guo,
Changyan Guo,
Changyan Guo,
Jide Wang,
Jide Wang,
Jide Wang,
Jide Wang,
Jide Wang,
Jide Wang,
Wei Wang
Wei Wang
Wei Wang
Wei Wang
Jide Wang,
Wei Wang
Wei Wang
Jide Wang,
Wei Wang
Jide Wang,
Jide Wang,
Kangkang Wang,
Siqi Liang,
Siqi Liang,
Jide Wang,
Jide Wang,
Jide Wang,
Jide Wang,
Jide Wang,
Jide Wang,
Kangkang Wang,
Wei Wang
Wei Wang
Siqi Liang,
Siqi Liang,
Siqi Liang,
Siqi Liang,
Wei Wang
Wei Wang
Wei Wang
Jide Wang,
Jide Wang,
Jide Wang,
Wei Wang
Wei Wang
Jide Wang,
Jide Wang,
Jide Wang,
Wei Wang
Wei Wang
Wei Wang
Wei Wang
Wei Wang
Summary
PVC microplastics treated with potassium permanganate oxidation gained MnO2 nanoparticles on their surface, increasing malachite green dye adsorption capacity from 2.6 mg/g to 140.7 mg/g under composite oxidation conditions, though high total desorption capacity indicates significant risk of dye release in gastrointestinal fluids.
Microplastics (MPs) and the typical hydrophilic organic pollutant Malachite green (MG) are frequently detected in sewage treatment plants. Potassium permanganate (KMnO4) pre-oxidation is an economical and effective technology in wastewater treatment. It is important to study the surface physicochemical characteristics of MPs and understand their fate in wastewater treatment plants after pre-oxidation. In this study, Polyvinyl chloride (PVC) MPs were treated by single and composite KMnO4 pre-oxidation with different pH values. After the pre-oxidation treatment, the appearance of OMn spectra and surface nanoparticles indicated the oxides (MnO2) were produced on the MPs surface. Moreover, the adhesion of MnO2 is helpful to improve the hydrophilicity and adsorption capacity of MG. The adsorption capacity of pristine PVC for MG was 2.6 mg/g. But the adsorption capacity increased to 7.0 mg/g for single oxidation and 140.7 mg/g for composite oxidation, respectively. The desorption experiment results indicate the pre-oxidation process could reduce the release efficiency of MG from the PVC MPs due to the better binding of surface MnO2 nanoparticles to MG. However, the total desorption capacity is still high. which illustrates that there is a high potential risk of MG which can transfer from the surface of the PVC MPs to the gastrointestinal fluids.