Optimizing Dielectric Barrier Discharge Pencil Plasma Jet Treatment for Efficient Degradation of Organic Contaminants in Denim Industry Wastewater

IF 2.5 3区物理与天体物理 Q3 ENGINEERING, CHEMICAL

Plasma Chemistry and Plasma Processing Pub Date : 2025-01-22 DOI:10.1007/s11090-025-10544-5

Vikas Rathore, Atul Nagar, Shruti Patel, Akanksha Pandey, Chirayu N. Patil, Jignasa Savjani, Shital Butani, Gopal Natesan, Heman Dave, Mudtorlep Nisoa, Sudhir Kumar Nema

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Abstract

This study investigates the effectiveness of plasma treatment in degrading organic contaminants from denim industry wastewater using a dielectric barrier discharge (DBD) plasma jet. A 3-way full factorial design was applied to evaluate the influence of treatment time, power, and airflow rate on degradation efficiency. Initial tests on dyes such as crystal violet, congo red, methylene blue, and indigo confirmed the efficacy of the plasma jet, with degradation efficiencies of 96.3%, 86.3%, 93.4%, and 97.8%, respectively, within treatment times ranging from 8 to 60 min. For denim industry wastewater, plasma treatment resulted in notable reductions in chemical oxygen demand (COD), with 35.0% removal for virgin wastewater and 15.9% for industry-treated wastewater. Total organic carbon removal increased by 42.6% for virgin wastewater and 18.2% for industry-treated wastewater, indicating substantial mineralization. Toxicity analysis showed that plasma-treated wastewater supported freshwater algae growth, suggesting a non-toxic nature and enrichment with nitrogen-based nutrients. Regression analysis and optimization identified plasma treatment time and power as the key factors in maximizing COD removal. Under optimal conditions, COD removal reached 97.65% for virgin wastewater and 98.1% for industry-treated wastewater. In conclusion, plasma treatment offers an effective and sustainable method for wastewater management in the textile industry, ensuring significant pollutant degradation, improved water quality, and a non-toxic, nutrient-rich effluent suitable for environmental applications.

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优化介质阻挡放电铅笔等离子体射流处理对牛仔布工业废水中有机污染物的有效降解

研究了介质阻挡放电（DBD）等离子体射流对牛仔布工业废水中有机污染物的降解效果。采用三因素全因子设计评价处理时间、功率和气流速率对降解效率的影响。对结晶紫、刚果红、亚甲基蓝和靛蓝等染料的初步试验证实了等离子体射流的有效性，在8到60分钟的处理时间内，降解效率分别为96.3%、86.3%、93.4%和97.8%。对于牛仔布工业废水，等离子体处理显著降低了化学需氧量（COD），原生废水去除率为35.0%，工业处理废水去除率为15.9%。原生废水的总有机碳去除率提高了42.6%，工业处理废水的总有机碳去除率提高了18.2%，表明矿化程度较高。毒性分析表明，等离子体处理后的废水支持淡水藻类生长，表明其无毒且富含氮基营养物质。回归分析和优化确定等离子体处理时间和功率是最大限度地去除COD的关键因素。在最佳条件下，原生废水COD去除率为97.65%，工业废水COD去除率为98.1%。总之，等离子体处理为纺织工业的废水管理提供了一种有效和可持续的方法，确保污染物显著降解，改善水质，并且无毒，富含营养的废水适合环境应用。

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来源期刊

Plasma Chemistry and Plasma Processing 工程技术-工程：化工

CiteScore

5.90

自引率

8.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Publishing original papers on fundamental and applied research in plasma chemistry and plasma processing, the scope of this journal includes processing plasmas ranging from non-thermal plasmas to thermal plasmas, and fundamental plasma studies as well as studies of specific plasma applications. Such applications include but are not limited to plasma catalysis, environmental processing including treatment of liquids and gases, biological applications of plasmas including plasma medicine and agriculture, surface modification and deposition, powder and nanostructure synthesis, energy applications including plasma combustion and reforming, resource recovery, coupling of plasmas and electrochemistry, and plasma etching. Studies of chemical kinetics in plasmas, and the interactions of plasmas with surfaces are also solicited. It is essential that submissions include substantial consideration of the role of the plasma, for example, the relevant plasma chemistry, plasma physics or plasma–surface interactions; manuscripts that consider solely the properties of materials or substances processed using a plasma are not within the journal’s scope.