Abstract
This study focuses on the modification of raw coir fibre (RCF) as a bio-adsorbent by partial bleaching to retain its strength with improvement in whiteness index, aesthetic value and surface roughness. The RCF and modified coir fibre (MCF) were examined for morphology, structural properties and tensile strength. The modification leads to the improvement in the whiteness index of RCF by 63.46%. The MCF is further explored for the adsorption of Reactive Orange 122 (RO122) dye by optimising time, concentration of dye, pH which showed 19.89 mg g−1 removal in 90 min at pH 2. The obtained MCF bio-adsorbent was further explored for real-time analysis employing textile effluent. The RCF, MCF and coir fibre after dye adsorption (CFADA) were further examined for potency towards microbial growth targeting a wide range of microbial strains, including both gram-positive and gram-negative bacteria which indicated microbial growth inhibition property of the CFADA. The composite, CFADA and a PVA binder showed a high fractural strength, withstanding up to 240 kg. This novel application puts the modified coir fibre as a low-cost bio-adsorbent capable of efficient dye removal from textile effluents and reuses in the microbial resilient composite formation for industrial applications.
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Acknowledgements
Authors are thankful to the Department of Science and Technology and Department of Biotechnology, New Delhi, for the grant under the DST-FIST program (No/SR/FST/College-151/2013(C)) and DBT-Star college scheme to Jaysingpur College, Jaysingpur. Authors (CJ and JP) are thankful to DKTES Textile and Engineering Institute, Ichalkaranji for providing testing facility.
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Chandala Jatkar: investigation, methodology, formal analysis, writing—original draft. Prof. Kalyanrao Garadkar, Dr. Rohant Dhabbe, Dr. Rajendra Kumbhar, Dr. Ravindra Kupwade and Jian Shen: formal analysis, writing—review and editing. Prof. Jaykumar Patil and Dr. Sandip Sabale: supervision, conceptualization, methodology, writing—review and editing.
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Highlights
• The partial bleaching method employed to RCF preserves aesthetic and tensile properties by improving colour index.
• The modified material (MCF) showed 48% removal of RO122 dye with applicability in real-time analysis.
• The post-adsorbed fibre (CFADA) is reused to fabricate composite sheet with 240 kg fractural strength for futuristic industrial applications.
• The developed method is a sustainable approach for bio-adsorbents for environmental remediation along with commercial reusability.
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Jatkar, C., Dhabbe, R., Garadkar, K. et al. A sustainable approach for tailoring coir-fibre based bio-adsorbent and its composite for industrial applications. Biomass Conv. Bioref. (2024). https://doi.org/10.1007/s13399-024-05620-3
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DOI: https://doi.org/10.1007/s13399-024-05620-3