Next Article in Journal
Autonomous Vehicles for Smart and Sustainable Cities: An In-Depth Exploration of Privacy and Cybersecurity Implications
Next Article in Special Issue
Preparation and Evaluation of a Coconut Shell-Based Activated Carbon for CO2/CH4 Separation
Previous Article in Journal
A Novel Improved Cuckoo Search Algorithm for Parameter Estimation of Photovoltaic (PV) Models
Previous Article in Special Issue
Advanced One-Dimensional Entrained-Flow Gasifier Model Considering Melting Phenomenon of Ash
Open AccessArticle

Value-Added Performance and Thermal Decomposition Characteristics of Dumped Food Waste Compost by Pyrolysis

Division of Environment and Plant Engineering, Korea Institute of Civil Engineering and Building Technology, 283, Goyang-daero, Ilsanseo-gu, Goyang-si 10223, Gyeonggi-do, Korea
Department of Construction environment Engineering, University of Science and Technology, 217, Gajeong-ro, Yuseong-gu, Daejeon KS015, Korea
Author to whom correspondence should be addressed.
Energies 2018, 11(5), 1061;
Received: 6 March 2018 / Revised: 20 April 2018 / Accepted: 20 April 2018 / Published: 25 April 2018
(This article belongs to the Special Issue Biomass Chars: Elaboration, Characterization and Applications Ⅱ)
Food waste compost has a high Na content, which interferes with plant growth when used as a soil enhancer and therefore makes it difficult to use. And, compared to the amount of compost produced every day, the amount of consumption required in farms is smaller, and the rest is buried underground, which releases greenhouse gases and pollutes underground water. This research compared and analyzed thermal degradation behavior, calorific value, and gas spectrometry during the pyrolysis between food waste compost and sawdust to suggest producing food waste compost biochar by pyrolysis as a new alternative solution to utilize the massive amount of food waste compost. Biochar from pyrolysis of food waste compost had a high carbon content of 51% at 300 °C, and the carbon content decreased as the pyrolysis temperature increased. According to the thermogravimetric analysis (TGA) and derivative thermo-gravimetric (DTG) analysis results, compost showed the largest weight reduction from 240 °C to 365 °C. The weight reduction temperature ranges for compost and sawdust were quite similar. This occurred because food waste of the compost was degraded, but sawdust of compost remained nearly during the composting process. A gas chromatography and mass spectrometry (GC-MS) analysis found that the gases were fragments of fatty acids, protein, and hemi-cellulose. These results could also have been caused by degradation of microorganisms involved in the composting process, sawdust, and small fragments of food waste. In the calorific value of biochar, the highest value (24.33 kJ/g) was obtained 300 °C. At a low pyrolysis temperature, carbon fixation occurred easily since the food waste in compost was degraded by microorganism, and the volatilization of sawdust, which plays an important role in determining the calorific value, was also small. That is why the highest calorific value was shown at 300 °C, not 400 °C or 500 °C. Hence, it seems that food waste compost can be used as a promising alternative fuel at a low pyrolysis temperature, as other lignocellulosic refuse-derived fuels (RDF). View Full-Text
Keywords: food waste compost; sawdust; pyrolysis; biochar; thermogravimetric analysis (TGA); calorific value food waste compost; sawdust; pyrolysis; biochar; thermogravimetric analysis (TGA); calorific value
Show Figures

Figure 1

MDPI and ACS Style

Lee, Y.-E.; Jo, J.-H.; Kim, I.-T.; Yoo, Y.-S. Value-Added Performance and Thermal Decomposition Characteristics of Dumped Food Waste Compost by Pyrolysis. Energies 2018, 11, 1061.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop