Biochar and gypsum amendment of agroindustrial waste for enhanced black soldier fly larval biomass and quality frass fertilizer
Black soldier fly (BSF) (Hermetia illucens L.) is one of the most efficient bio-waste recyclers. Although, waste substrate amendments with biochar or gypsum during composting process are known to enhance nutrient retention, their impact on agro-industrial waste have not been documented. Hence, this...
| Main Authors: | , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Public Library of Science
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/111330 |
| _version_ | 1855530580983152640 |
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| author | Beesigamukama, D. Mochoge, Benson Korir, N.K. Fiaboe, K.K. Nakimbugwe, D. Khamis, F.M. Dubois, T. Subramanian, S. Wangu, M.M. Ekesi, S. Tanga, C.M. |
| author_browse | Beesigamukama, D. Dubois, T. Ekesi, S. Fiaboe, K.K. Khamis, F.M. Korir, N.K. Mochoge, Benson Nakimbugwe, D. Subramanian, S. Tanga, C.M. Wangu, M.M. |
| author_facet | Beesigamukama, D. Mochoge, Benson Korir, N.K. Fiaboe, K.K. Nakimbugwe, D. Khamis, F.M. Dubois, T. Subramanian, S. Wangu, M.M. Ekesi, S. Tanga, C.M. |
| author_sort | Beesigamukama, D. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Black soldier fly (BSF) (Hermetia illucens L.) is one of the most efficient bio-waste recyclers. Although, waste substrate amendments with biochar or gypsum during composting process are known to enhance nutrient retention, their impact on agro-industrial waste have not been documented. Hence, this study focuses on a comparative effect of agro-industrial waste amended with biochar and gypsum on BSF larval performance, waste degradation, and nitrogen (N) and potassium retention in frass fertilizer. Brewery spent grain was amended with biochar or gypsum at 0, 5, 10, 15 and 20% to determine the most effective rates of inclusion. Amending feedstock with 20% biochar significantly increased wet (89%) and dried (86%) larval yields than the control (unamended feedstock). However, amendment with 15% gypsum caused decrease in wet (34%) and dried (30%) larval yields but conserved the highest amount of N in frass. Furthermore, the inclusion of 20% biochar recorded the highest frass fertilizer yield and gave a 21% increase in N retention in frass fertilizer, while biomass conversion rate was increased by 195% compared to the control. Feedstock amendment with 5% biochar had the highest waste degradation efficiency. Potassium content in frass fertilizer was also significantly enhanced with biochar amendment. At maturity, frass compost with more than 10% inclusion rate of biochar had the highest cabbage seed germination indices (>100%). The findings of this study revealed that initial composting of biochar amended feedstocks using BSF larvae can significantly shorten compost maturity time to 5 weeks with enhanced nutrient recycling compared to the conventional composting methods. |
| format | Journal Article |
| id | CGSpace111330 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Public Library of Science |
| publisherStr | Public Library of Science |
| record_format | dspace |
| spelling | CGSpace1113302025-11-11T10:34:53Z Biochar and gypsum amendment of agroindustrial waste for enhanced black soldier fly larval biomass and quality frass fertilizer Beesigamukama, D. Mochoge, Benson Korir, N.K. Fiaboe, K.K. Nakimbugwe, D. Khamis, F.M. Dubois, T. Subramanian, S. Wangu, M.M. Ekesi, S. Tanga, C.M. hermetia illucens composting nutrients soil parent material wastes fertilizers Black soldier fly (BSF) (Hermetia illucens L.) is one of the most efficient bio-waste recyclers. Although, waste substrate amendments with biochar or gypsum during composting process are known to enhance nutrient retention, their impact on agro-industrial waste have not been documented. Hence, this study focuses on a comparative effect of agro-industrial waste amended with biochar and gypsum on BSF larval performance, waste degradation, and nitrogen (N) and potassium retention in frass fertilizer. Brewery spent grain was amended with biochar or gypsum at 0, 5, 10, 15 and 20% to determine the most effective rates of inclusion. Amending feedstock with 20% biochar significantly increased wet (89%) and dried (86%) larval yields than the control (unamended feedstock). However, amendment with 15% gypsum caused decrease in wet (34%) and dried (30%) larval yields but conserved the highest amount of N in frass. Furthermore, the inclusion of 20% biochar recorded the highest frass fertilizer yield and gave a 21% increase in N retention in frass fertilizer, while biomass conversion rate was increased by 195% compared to the control. Feedstock amendment with 5% biochar had the highest waste degradation efficiency. Potassium content in frass fertilizer was also significantly enhanced with biochar amendment. At maturity, frass compost with more than 10% inclusion rate of biochar had the highest cabbage seed germination indices (>100%). The findings of this study revealed that initial composting of biochar amended feedstocks using BSF larvae can significantly shorten compost maturity time to 5 weeks with enhanced nutrient recycling compared to the conventional composting methods. 2021 2021-02-16T09:24:25Z 2021-02-16T09:24:25Z Journal Article https://hdl.handle.net/10568/111330 en Open Access application/pdf Public Library of Science Beesigamukama, D., Mochoge, B., Korir, N.K., Fiaboe, K.K., Nakimbugwe, D., Khamis, F.M., ... & Tanga, C.M. (2020). Biochar and gypsum amendment of agro-industrial waste for enhanced black soldier fly larval biomass and quality frass fertilizer. PloS One, 15(8), e0238154, 1-25. |
| spellingShingle | hermetia illucens composting nutrients soil parent material wastes fertilizers Beesigamukama, D. Mochoge, Benson Korir, N.K. Fiaboe, K.K. Nakimbugwe, D. Khamis, F.M. Dubois, T. Subramanian, S. Wangu, M.M. Ekesi, S. Tanga, C.M. Biochar and gypsum amendment of agroindustrial waste for enhanced black soldier fly larval biomass and quality frass fertilizer |
| title | Biochar and gypsum amendment of agroindustrial waste for enhanced black soldier fly larval biomass and quality frass fertilizer |
| title_full | Biochar and gypsum amendment of agroindustrial waste for enhanced black soldier fly larval biomass and quality frass fertilizer |
| title_fullStr | Biochar and gypsum amendment of agroindustrial waste for enhanced black soldier fly larval biomass and quality frass fertilizer |
| title_full_unstemmed | Biochar and gypsum amendment of agroindustrial waste for enhanced black soldier fly larval biomass and quality frass fertilizer |
| title_short | Biochar and gypsum amendment of agroindustrial waste for enhanced black soldier fly larval biomass and quality frass fertilizer |
| title_sort | biochar and gypsum amendment of agroindustrial waste for enhanced black soldier fly larval biomass and quality frass fertilizer |
| topic | hermetia illucens composting nutrients soil parent material wastes fertilizers |
| url | https://hdl.handle.net/10568/111330 |
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