Experimental studies on energy recovery from plasma-treated textile sludge

Rajendran Mariappan (), S. M. Sivagami and Mohanraj Murugesan
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Rajendran Mariappan: Hindusthan College of Engineering: Hindusthan College of Engineering and Technology
S. M. Sivagami: Alagappa Chettiar College of Engineering and Technology
Mohanraj Murugesan: Hindusthan College of Engineering: Hindusthan College of Engineering and Technology

Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, 2025, vol. 27, issue 11, No 85, 28133 pages

Abstract: Abstract Textile sludge is the solid residue remaining after the effluent treatment process. The treatment and disposal of textile sludge is a major challenge. In this research, an attempt has been made to study the characteristics of plasma-treated textile sludge. A plasma-firing gun is operated inside a closed chamber for plasma treatment. Vitrified slag is obtained as a result of this plasma treatment and the gaseous output is studied under the influence of various established thermal process concepts. Since plasma treatment is a thermal transfer process, the energy consumption and its recovery are studied. Thermodynamic efficiency as per calculations is 49%. The exhaust gas contains CO, CO2, and hydrogen at high temperatures (above 100 °C) and can be utilized for thermal energy recovery. The exhaust gas can be further reformed to improve its calorific value by adding steam, CO2 and oxygen. Efficiency reaches 73% in CO2 reformation, and it is 59% and 58% for oxygen and steam reformation, respectively, based on experimental observations. A weight reduction of 55–62% and a volume reduction of 42% are observed. The quality of syngas evaluation through equivalence ratio evaluation proves that higher efficiencies are achievable through steam reformation. Textile sludge generation of Tamilnadu state of India data is considered and cost and payback period are estimated around 8 years. Cost reducing suggestions in Indian context is explained.

Keywords: Energy recovery; Textile sludge; Plasma Technology; Syngas; Pyrolysis; MSW (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1007/s10668-024-05857-y

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