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

IF 2.6 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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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.