Department of Electrical and Biological Physics /Plasma Bioscience Research Center, Kwangwoon University, Seoul, 01897, South Korea.
Department of Biotechnology, College of Engineering, The University of Suwon, Hwaseong, 18323, South Korea.
J Environ Manage. 2024 Nov;370:122554. doi: 10.1016/j.jenvman.2024.122554. Epub 2024 Sep 20.
Synthetic dyes produced by the textile dyeing industry and released into wastewater contribute significantly to water pollution. This study explores the efficacy and versatility of a novel multi-electrode dielectric barrier discharge (MEDBD) plasma system that mainly generates ozone (O generator) and nitric oxide (NO generator) selectively to degrade various synthetic textile dyes, namely Methylene Blue (MB), Congo Red (CR), Methyl Orange (MO), Crystal Violet (CV), and Evans Blue (EB). Plasma achieved selective enrichment of O and NO by utilizing optimized plasma generation duty cycles of 15% and 100%, respectively. The proposed O generator plasma involves plasma-generated aqua electron impact, excited species, and reactive oxygen species notably O, which degrades synthetic textile dyes into simple forms such as CO, HO, and N. This approach achieved over 95% degradation of the above synthetic textile dyes when employing the O enriched plasma with 2.44 ± 0.21 W of power. Ecotoxicological evaluation, including microbial, human cell, and phytotoxicity evaluations of the O generator plasma for MB and CR dye-contaminated water, underscored the potential of this plasma system for environmentally friendly dye degradation. Overall, this study promotes MEDBD plasma, particularly the O generator, as a sustainable and efficient solution for treating synthetic dye-contaminated water across industries.
纺织染料工业生产的合成染料和排放到废水中的合成染料对水污染有很大的贡献。本研究探索了一种新型多电极介电阻挡放电（MEDBD）等离子体系统的功效和多功能性，该系统主要选择性地产生臭氧（O 发生器）和一氧化氮（NO 发生器），以降解各种合成纺织染料，即亚甲蓝（MB）、刚果红（CR）、甲基橙（MO）、结晶紫（CV）和依文思蓝（EB）。通过利用分别为 15%和 100%的优化等离子体生成占空比，等离子体实现了 O 和 NO 的选择性富集。所提出的 O 发生器等离子体涉及等离子体产生的水合电子冲击、激发态和活性氧物质，特别是 O，将合成纺织染料降解为简单形式，如 CO、HO 和 N。当使用功率为 2.44 ± 0.21 W 的富 O 等离子体时，该方法实现了上述合成纺织染料超过 95%的降解。对 O 发生器等离子体处理 MB 和 CR 染料污染水的微生物、人类细胞和植物毒性评估的生态毒理学评价强调了该等离子体系统在环保型染料降解方面的潜力。总体而言，本研究推动了 MEDBD 等离子体，特别是 O 发生器，作为一种可持续且高效的解决方案，用于处理各行业的合成染料污染水。
