Calorific and greenhouse gas emission in municipal solid waste treatment using biodrying
<strong>BACKGROUND AND OBJECTIVES:</strong> Urban intensity and activities produce a large amount of biodegradable municipal solid waste. Therefore, biodrying processing was adopted to ensure the conversion into Refuse Derived Fuel and greenhouse gases.<br /> <strong>METHODS:...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
GJESM Publisher
2021-01-01
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| Series: | Global Journal of Environmental Science and Management |
| Subjects: | |
| Online Access: | https://www.gjesm.net/article_43616_680cd1ef4e52fd7340359ed35b8b19b9.pdf |
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| Summary: | <strong>BACKGROUND AND OBJECTIVES:</strong> Urban intensity and activities produce a large amount of biodegradable municipal solid waste. Therefore, biodrying processing was adopted to ensure the conversion into Refuse Derived Fuel and greenhouse gases.<br /> <strong>METHODS:</strong> This study was performed at a greenhouse, using six biodrying reactors made from acrylic material, and equipped with digital temperature recording, blower, and flow meters. The variations in airflow (0, 2, 3, 4, 5, 6 L/min/kg) and the bulking agent (15%) were used to evaluate calorific value, degradation process and GHG emissions.<br /> <strong>FINDINGS</strong><strong>: </strong>The result showed significant effect of airflow variation on cellulose content and calorific value. Furthermore, the optimum value was 6 L/min/kg, producing a 10.05% decline in cellulose content, and a 38.17% increase in calorific value. Also, the water content reduced from 69% to 40%. The CH<sub>4</sub> concentration between control and biodrying substantially varied at 2.65 ppm and 1.51 ppm respectively on day 0 and at peak temperature. Morever, the value of N<sub>2</sub>O in each control was about 534.69 ppb and 175.48 ppb, while the lowest level was recorded after biodrying with 2 L/min/kg airflow.<br /> <strong>CONCLUSION:</strong> The calorific value of MSW after biodrying (refuse derived fuel) ranges from 4,713 – 6,265 cal/g. This is further classified in the low energy coal (brown coal) category, equivalent to <7,000 cal/g. Therefore, the process is proven to be a suitable alternative to achieve RDF production and low GHG emissions. |
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| ISSN: | 2383-3572 2383-3866 |