Enhancing the Fuel Properties of Spent Coffee Grounds through Hydrothermal Carbonization: Output Prediction and Post-Treatment Approaches

Created by W.Langdon from gp-bibliography.bib Revision:1.8010

@Article{dang:2024:Sustainability,

• author = "Chau Huyen Dang and Gianluigi Farru and Claudia Glaser and Marcus G. Fischer and Judy A. Libra",
• title = "Enhancing the Fuel Properties of Spent Coffee Grounds through Hydrothermal Carbonization: Output Prediction and {Post-Treatment} Approaches",
• journal = "Sustainability",
• year = "2024",
• volume = "16",
• number = "1",
• pages = "Article No. 338",
• keywords = "genetic algorithms, genetic programming",
• ISSN = "2071-1050",
• URL = "https://www.mdpi.com/2071-1050/16/1/338",
• DOI = "doi:10.3390/su16010338",
• abstract = "The reuse potential for the large annual production of spent coffee grounds (SCGs) is underexploited in most world regions. Hydrochars from SCGs produced via hydrothermal carbonization (HTC) have been recognised as a promising solid fuel alternative. To increase demand, optimisation of the HTC and two post-treatment processes, washing and agglomeration, were studied to improve hydrochar in terms of energetic properties, minimizing unwanted substances, and better handling. HTC experiments at three scales (1-18.75 L) and varying process conditions (temperature T (160-250 ?C), reaction time t (1-5 h), and solid content percentSo (6-20percent) showed that the higher heating value (HHV) can be improved by up to 46percent, and most potential emissions of trace elements from combustion reduced (up to 90percent). The HTC outputs (solid yield--SY, HHV, energy yield--EY) were modelled and compared to published genetic programming (GP) models. Both model types predicted the three outputs with low error (<15percent) and can be used for process optimisation. The efficiency of water washing depended on the HTC process temperature and type of aromatics produced. The furanic compounds were removed (69-100percent; 160 ?C), while only 34percent of the phenolic compounds (240 ?C) were washed out. Agglomeration of both wet SCG and its hydrochar is feasible; however, the finer particles of washed hydrochar (240 ?C) resulted in larger-sized spherical pellets (85percent > 2000-4000 um) compared to SCGs (only 4percent).",
• notes = "also known as \cite{su16010338}",

}

Genetic Programming entries for Huyen Chau Dang Gianluigi Farru Claudia Glaser Marcus G Fischer Judy A Libra

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