Pryloysis of Coffee Husks for Biochar Production
| dc.contributor.author | Kiggundu, Nicholas | |
| dc.contributor.author | Sittamukyoto, Julius | |
| dc.date.accessioned | 2022-12-25T12:05:33Z | |
| dc.date.available | 2022-12-25T12:05:33Z | |
| dc.date.issued | 2019 | |
| dc.description.abstract | Effective utilization of coffee wastes has been a great challenge in Uganda despite their wider use to replenish soil organic matter. This study explored the possibility of producing biochar from coffee husks that could be used as a soil amendment for replenishing soil nutrients and also for enhancement of soil water holding capacity. Pyrolysis of coffee husks was done in a batch bio-reactor under slow pyrolysis conditions of temperatures 350˚C - 550˚C and residence times 30 - 60 min. For easy characterization, biochar was grinded, sieved through a 1 mm sieve and then analyzed using a computerized Thermo Graphic Analyzer with an inbuilt and integrated ELTRA 84 GmbH Precision Digital weighing scale. Proximate analysis (wet basis) of biochar gave a moisture content of 5.2%, ash content of 14.7%, volatile matter of 13.2% and fixed carbon of 66.9%. Biochar was applied to soil at different rates (0%, 5%, 10% and 20% w/w) and its effect on water holding capacity was investigated. Results show that biochar amended soils had higher water holding capacity (p ≤ 0.05) compared to biochar free soils. The water holding capacity also increased with increase in biochar amendment with a 1.5% increase in soil water holding capacity for each 1% increase in biochar application rate. Biochar was also rich in soil nutrient elements with 0.96% N, 0.39% P and 1.97% K; this increased the availability of soil nutrients for crop growth. The results suggest that biochar could be a better tool to improve soil conditions thus enhancing the sustainability of agriculture. | en_US |
| dc.identifier.citation | Kiggundu, N. and Sittamukyoto, J. (2019) Pryloysis of Coffee Husks for Biochar Production. Journal of Environmental Protection, 10, 1553-1564. https://doi.org/10.4236/jep.2019.1012092 | en_US |
| dc.identifier.uri | https://doi.org/10.4236/jep.2019.1012092 | |
| dc.identifier.uri | https://nru.uncst.go.ug/handle/123456789/6536 | |
| dc.language.iso | en | en_US |
| dc.publisher | Journal of Environmental Protection | en_US |
| dc.subject | Coffee Husks | en_US |
| dc.subject | pryloysis | en_US |
| dc.subject | Biochar | en_US |
| dc.subject | Soil Organic Matter | en_US |
| dc.subject | Soil Nutrients | en_US |
| dc.title | Pryloysis of Coffee Husks for Biochar Production | en_US |
| dc.type | Article | en_US |