Pyrolysis of sewage sludge for sustainable biofuels and value-added biochar production

Praveen Kumar Ghodke, Amit Kumar Sharma, J. K. Pandey, Wei Hsin Chen, Alok Patel, Veeramuthu Ashokkumar

研究成果: Article同行評審

6 引文 斯高帕斯(Scopus)

摘要

The study deals with the pyrolysis of sewage sludge to produce eco-friendly and sustainable fuels along with value-added biochar products. The experiments were conducted in a fixed-bed cylindrical glass reactor in the temperature range of 250–700 °C and achieved the product yield of 22.4 wt% bio-oil, 18.9 wt % pyrolysis gases, and 58.7 wt% biochar at 500 °C optimum temperature. The chemical composition of bio-oil was investigated by gas chromatograph-mass spectroscopy and fourier transformation infrared techniques. The ASTM standard procedures were used to assess the fuel qualities of bio-oil, and they were found to be satisfactory. Bio-oil has a greater H/C ratio (3.49) and a lower O/C ratio (1.10), indicating that it is suitable for engine use. The gas chromatographic analysis of pyrolysis gases confirmed the presence of 41.16 wt % combustible gases, making it suitable for use in spark-ignition engines. X-ray fluorescence analysis of biochar showed that it had a good amount of carbon, nitrogen, phosphorus, and potassium along with some micro-and macro-nutrient which proves its potential to utilize as organic manure in the agriculture sector. In addition, the data obtained from the TGA analysis during the pyrolysis of sewage sludge was applied to calculate kinetic parameters via the Coats-Redfern method.

原文English
文章編號113450
期刊Journal of Environmental Management
298
DOIs
出版狀態Published - 2021 11月 15

All Science Journal Classification (ASJC) codes

  • 環境工程
  • 廢物管理和處置
  • 管理、監督、政策法律

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