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

被引：78
作者：
Ghodke, Praveen Kumar [1 ]
Sharma, Amit Kumar [2 ]
Pandey, J. K. [3 ]
Chen, Wei-Hsin [4 ,5 ,6 ]
Patel, Alok [7 ]
Ashokkumar, Veeramuthu [8 ,9 ]
机构：
[1] Natl Inst Technol Calicut, Dept Chem Engn, Kozhikode 673601, Kerala, India
[2] Univ Petr & Energy Studies UPES, Dept Chem, Ctr Alternate & Renewable Energy Res, R&D,Sch Engn, Energy Acres Bldg, Dehra Dun 248007, Uttarakhand, India
[3] Adamas Univ, Sch Basic & Appl Sci, Dept Chem, Kolkata 700126, India
[4] Natl Cheng Kung Univ, Dept Aeronaut & Astronaut, Tainan 701, Taiwan
[5] Tunghai Univ, Res Ctr Smart Sustainable Circular Econ, Taichung 407, Taiwan
[6] Natl Chin Yi Univ Technol, Dept Mech Engn, Taichung 411, Taiwan
[7] Lulea Univ Technol, Biochem Proc Engn, Div Chem Engn, Dept Civil Environm & Nat Resources Engn, SE-97187 Lulea, Sweden
[8] Chulalongkorn Univ, Dept Chem Technol, Fac Sci, Bangkok 10330, Thailand
[9] Saveetha Univ, Saveetha Inst Med & Tech Sci, Saveetha Sch Engn, Dept Energy & Environm Engn, Chennai 600077, Tamil Nadu, India
来源：
JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2021年 / 298卷
关键词：
Sewage sludge; Pyrolysis; Bio-oil; Pyrolysis gas; Biochar; Kinetic modeling; KINETICS;
D O I：
10.1016/j.jenvman.2021.113450
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
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 degrees C and achieved the product yield of 22.4 wt% bio-oil, 18.9 wt % pyrolysis gases, and 58.7 wt% biochar at 500 degrees 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 CoatsRedfern method.
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页数：9
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