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Exploring the potential of graphite material in an unplanted electroactive wetland for the remediation of synthetic wastewater containing azo dye.
Saket, Palak; Joshi, Abhijeet; Yadav, Asheesh Kumar; Bala, Kiran.
Afiliación
  • Saket P; Department of Biosciences and Biomedical Engineering, Indian Institute of Technology, Indore, 453552, Madhya Pradesh, India.
  • Joshi A; Department of Biosciences and Biomedical Engineering, Indian Institute of Technology, Indore, 453552, Madhya Pradesh, India.
  • Yadav AK; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India.
  • Bala K; CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, Odisha, 751013, India.
Environ Sci Pollut Res Int ; 31(36): 48986-48998, 2024 Aug.
Article en En | MEDLINE | ID: mdl-39042190
ABSTRACT
The current study was conducted to understand the sole role of graphite as a substrate material in a dual-chambered baffled electroactive wetland (EW) in the treatment of Methyl red dye-containing wastewater. The results obtained were compared with conventional gravel-based unplanted dual-chambered constructed wetlands (CW) at a lab scale. The highest dye decolorisation and COD removal efficiency achieved was 92.88 ± 1.6% and 95.78 ± 4.1%, respectively, in the electro-active wetland. Dissolved oxygen (DO) and pH conditions were appropriately maintained in both the microcosms because of separated aerobic and anaerobic chambers. UV-vis and gas chromatography-mass spectroscopy analysis revealed the production of by-products like 4-amino benzoic and N- N dimethyl phenyl-diamine of MR in microcosms and revealed further mineralisation of by-products in the aerobic zone of electroactive-wetland. Higher root growth of Cicer aerietinum and Vigna radiata was observed in the presence of effluents of baffled electroactive wetlands compared to constructed wetland, indicating a decrease in phytotoxicity. Metagenomic analysis revealed the abundance of potential microbes for MR and organic matter removal from phylum Proteobacteria, Firmicutes, Bacteroidetes, and Euryarchaeota. A batch adsorption study revealed a higher adsorption capability of graphite material in comparison to gravel. Hence, this study demonstrated that graphite is an appropriate substrate in electroactive wetland in facilitating microbial attachments and enhancing dye degradation, in addition to exhibiting superior adsorption quality.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Compuestos Azo / Eliminación de Residuos Líquidos / Colorantes / Humedales / Aguas Residuales / Grafito Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: India Pais de publicación: Alemania
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Compuestos Azo / Eliminación de Residuos Líquidos / Colorantes / Humedales / Aguas Residuales / Grafito Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: India Pais de publicación: Alemania