ABSTRACT Black soldier fly (BSF) larvae have attracted significant attention as an innovative and sustainable solution for biodegradation and reduction of organic waste. Importantly, their utilization offers an ecologically viable and efficient strategy for waste management, especially in enhancing the composting process. Therefore, this study aimed to investigate the effects of third instar BSF larvae on the biodegradation and physicochemical attributes of pig manure and sawdust mixtures at varying ratios to identify the optimal conditions for improving compost quality. In terms of biodegradability, BSF (0.5 kg) larvae cultivated on a 1:1 pig manure (2.5 kg) to sawdust (2.5 kg) ratio (T2 group) did not exhibit superior biodegradation ability compared with the control and T1 (a mixture of 3 kg pig manure and 2 kg sawdust + 0.5 kg BSF larvae) groups. However, the T2 group demonstrated considerable potential as a supplementary substrate for rearing BSF larvae, yielding notable improvements in composting efficiency. In addition, key parameters, such as total carbon and nitrogen contents, fiber component, and C:N ratio were more favorable in the T2 group than in the other groups. Importantly, the C:N ratio (15) and low pH of the T2 group were consistent with the requirements for effective composting. Collectively, these results highlight the importance of optimizing substrate composition for effective composting. However, further research is required to explore the mechanisms driving waste reduction and identify the optimal levels of fiber components for BSF larvae in pig manure and sawdust mixtures.
In‐Hag Choi (Mon,) studied this question.
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