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<p>This study investigates the feasibility and efficacy of utilizing readily and abundantly available defoliated dried plant leaves/dry fallen plant leaves based nano biomass, i.e. nanocellulose acetate for the removal of Chemical oxygen demand, COD from COD wastewater. The optimized COD removal capacity of the produced NCA was investigated with respect to certain adsorption parameters such as dosage, contact time, temperature and pH. Results demonstrate the remarkable COD removal capabilities of NCA, achieving up to 90.8% from COD wastewater. The adsorption isotherm and kinetics mechanism studies were carried out by fitting different adsorption isotherm and kinetic models, revealing that the Langmuir isotherm and pseudo-second-order kinetic models best describe the adsorption process. This research underscores the potential of dry fallen plant leaves based Nanocellulose Acetate as a sustainable approach for treating high COD wastewater, offering a viable solution for environmental remediation in the COD waste water producing industry. The cost benefit analysis suggests the process to be economically, socially and environmentally feasible. On the basis of the results obtained, a model has been proposed for real life COD removal by NCA, suggesting for its large scale application.</p>

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Removal of Chemical Oxygen Demand (COD) from the Wastewater using Plant Based Nanobiomass

  • 期刊论文

  • 发表日期：

    2025年1月31日

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  • Lopamudra Digal,
  • Priyanka Priyadarshini,
  • Dilip Kumar Kar,
  • Jayashree Mohanty

摘要

This study investigates the feasibility and efficacy of utilizing readily and abundantly available defoliated dried plant leaves/dry fallen plant leaves based nano biomass, i.e. nanocellulose acetate for the removal of Chemical oxygen demand, COD from COD wastewater. The optimized COD removal capacity of the produced NCA was investigated with respect to certain adsorption parameters such as dosage, contact time, temperature and pH. Results demonstrate the remarkable COD removal capabilities of NCA, achieving up to 90.8% from COD wastewater. The adsorption isotherm and kinetics mechanism studies were carried out by fitting different adsorption isotherm and kinetic models, revealing that the Langmuir isotherm and pseudo-second-order kinetic models best describe the adsorption process. This research underscores the potential of dry fallen plant leaves based Nanocellulose Acetate as a sustainable approach for treating high COD wastewater, offering a viable solution for environmental remediation in the COD waste water producing industry. The cost benefit analysis suggests the process to be economically, socially and environmentally feasible. On the basis of the results obtained, a model has been proposed for real life COD removal by NCA, suggesting for its large scale application.