Green Chemistry Innovation: Tangerine Peel-Derived Biochar as an Anodic Catalyst for SO2 Electro-Catalytic Oxidation

This research explores green chemistry principles by employing tangerine peel-derived biochar as an anodic catalyst for sulfur dioxide (SO2) electro-catalytic oxidation. The study optimizes TPB/CNT-derived Fe3C/Fe/C (N-doped) catalyst, demonstrating cost-effectiveness and eco-friendly potential in simultaneous SO2 removal and hydrogen production, contributing to sustainable flue gas purification.

March 4, 2024

1–2 minutes

Qu, Qiu, & Deng (2024) Synthesis, Characterization and Application of Tangerine Peel-derived Fe₃C/Fe-Encapsulated BiocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More for Electrochemical Removal of Environmental Pollutant. Electrocimica Acto. https://doi.org/10.1016/j.electacta.2024.144008

This study explores an innovative approach to environmental sustainability by applying the principles of green chemistry to address the issue of atmospheric sulfur dioxide (SO2) pollution. The research focuses on electro-catalytic oxidation using tangerine peel-derived biochar (TPB) as an anodic catalyst, demonstrating the concept of “treating waste with waste,” in line with the 7th principle of green chemistry emphasizing the use of renewable feedstocks.

The study methodically synthesizes TPB/CNT-derived Fe3C/Fe/C (N-doped) as a cost-effective anodic catalyst for SO2 electro-catalytic oxidation. Through careful optimization, the researchers determine the ideal iron mass fraction and pyrolysisPyrolysis is a thermochemical process that converts waste biomass into bio-char, bio-oil, and pyro-gas. It offers significant advantages in waste valorization, turning low-value materials into economically valuable resources. Its versatility allows for tailored products based on operational conditions, presenting itself as a cost-effective and efficient More temperature, enhancing the electro-catalytic performance. Various characterization techniques, including SEM, TEM, XPS, and Raman spectroscopy, confirm the effectiveness of the catalyst.

Moreover, a flow electrolyzer is assembled to illustrate the practical application of the TPB/CNT-derived Fe3C/Fe/C (N-doped) anodic catalyst in a real scenario. The simultaneous removal of SO2 and hydrogen production aligns with waste prevention and green chemistry principles. The study highlights the use of tangerine peel as a renewable feedstockFeedstock refers to the raw organic material used to produce biochar. This can include a wide range of materials, such as wood chips, agricultural residues, and animal manure. More and green solvents, emphasizing the environmentally friendly nature of the proposed technique.

This research offers a potential solution to challenges posed by traditional SO2 removal methods, providing a cost-effective and environmentally sustainable alternative. The consideration of TPB/CNT-derived catalysts as substitutes for precious metals suggests practical applications in flue gas purification, contributing to a cleaner and more sustainable future.