Investigation of the redox behavior of biochar-based bipolar electrochemistry in porous media

Zhang, Hongwei; Xu, Haiyin; Zi, Hui; Tang, Yuwei; Zheng, Xijie; Wang, Ping; Huang, Jing; Wu, Honghui; Song, Peipei; Wu, linxin; Liu, Zechen; Mao, Wenshao; Song, Xinyang; Jia, Meiying

doi:10.1016/j.cej.2023.144384

Cited by 12 publications

(1 citation statement)

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“…Mn(VII) has a high reduction potential compared to other chemical oxidants and is attractive because of its relative stability, ease of handling, low cost, and lack of formation of chlorination or bromination by-products [29]. Moreover, the reduction products of Mn(VII) are environmentally benign and can be used as coagulants to improve the performance of the coagulation/filtration process or as adsorbents or oxidizers to facilitate the removal of pollutants [30][31][32]. There are few studies on activating persulfate using Mn(VII) combined with Fe(III) [33,34].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Fe(III)-g-C3N4 and Applications of Synergistic Catalyzed PMS with Mn(VII) for Methylene Blue Degradation

Li,

Gu,

Wang

et al. 2024

Sustainability

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Refractory organic pollutants pose a great threat to public health in water bodies due to their toxicity and low biodegradability. Developing a method of activating persulfate efficiently and in an environmentally friendly way has become a popular topic of research in current advanced oxidation water treatment technologies. Fe(III)-g-C3N4 was prepared by the calcination method. Fe(III) was anchored on the framework of g-C3N4. The characterization analysis indicated that Fe(III) was successfully loaded on g-C3N4. The best effect for MB degradation was Fe(III)-g-C3N4 (0.1 g/L) dosed with 30 µmol/L KMnO4 for synergistic catalyzed PMS (0.1 g/L), where the degradation rate could reach 95.4%. The optimum temperature for MB degradation was determined to be 10 °C. The optimum pH range of Fe(III)-g-C3N4/Mn(VII) synergistic catalyzed PMS for MB degradation was pH 4.4–6.6 under acidic conditions, and the optimum pH range for MB degradation was pH 8–10 under alkaline conditions. The Fe(III)-g-C3N4/Mn(VII) synergistic catalyzed PMS system was also tested for the degradation of methyl orange and rhodamine b, and good degradation results were obtained with the degradation rates of 87.37% and 84%, respectively. It facilitates the reduction in pollutant emissions, improves water quality and will have a positive impact on the sustainability of the environment.

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