Hydrochar as an Energy Alternative to Coal: Effect of Temperature on Hydrothermal Carbonization of Paper Board Mill Sludge
Open accessAbstract
Hydrothermal Carbonization is a thermochemical conversion process in which a biomass is processed under hot compressed air to form carbon rich products called as hydrochar. Hydrochar is a hydrophobic, condensed and friable solid product with a fuel property similar to conventional non-renewable energy sources like coal and lignite. Hydrothermal Carbonization performed with Effluent Treatment Plant (ETP) sludge at a temperature range of 180-240℃ for a time period of 4 hours in a hydrothermal autoclave reactor resulted in the production of hydrochar with good energy values thereby ensuring its utilization as an alternative to coal. The energy properties like higher heating value (15.25 MJ Kg-1), energetic recovery efficiency (69.8%) and energy densification (1.24) were found to increase after hydrothermal carbonization at 220° for 4 hours.
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Sadish et al. (2019) prepared hydrochar from effluent treatment plant sludge via HTC to use as supplement to coal; HTC char produced at 200 °C for 4 h showed highest energy densification (1.24), heating value (15.25 MJ/Kg), and energy recovery efficiency (69.8%).
“Sadish et al. (2019) prepared hydrochar from effluent treatment plant sludge via HTC technique to use hydrochar for the creating of energy as a supplement to coal [109].Among all the experimental studies, HTC char produced at 200 °C for 4 h showed the highest energy densification (1.24), heating value (15.25 MJ/Kg), and energy recovery efficiency”
From Hydrochar: A Review on Its Production Technologies and Applications (2021) · cites this paper as [109]
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Hydrochar: A Review on Its Production Technologies and Applications
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- Authors
- Sadish, O., Paul Sebastian, S., Banu, K. S. P., & Mahendran, R.
- Affiliations
- Tamil Nadu Agricultural University (IN)
- ORCID
- Banu, K. Sara Parwin
- Venue
- International Journal of Current Microbiology and Applied Sciences
- Publisher
- Excellent Publishers
- Published
- 2019-06-10
- Volume
- 8
- Issue
- 06
- Pages
- 1668-1675
- ISSN
- 2319-7692 (ISSN-L)
- 2319-7706
- OpenAlex
- W2960324539
- Cited by
- 12
- References
- 17
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 3 · 2023: 1 · 2022: 2 · 2021: 2 · 2019: 1
- FWCI
- 0.44
- Type
- journal article
- Language
- en
- Open access
- diamond
- doi.org
- Licence
- cc-by-nc-sa
- Locations
- International Journal of Current Microbiology and Applied Sciences (publishedVersion, cc-by-nc-sa)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
- Physical Sciences › Engineering › Mechanical Engineering › Coal Combustion and Slurry Processing
- Physical Sciences › Engineering › Building and Construction › Anaerobic Digestion and Biogas Production
- Keywords
- hydrochar, hydrothermal carbonization, temperature effects, higher heating value, energy densification, biomass conversion
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