Scholarlink

Background <p>Black soldier fly larvae (BSFL) can convert chicken manure into biomass. However, a single chicken manure substrate leads to low efficiency and more emissions due to nutrient imbalance. This study aimed to investigate differences in conversion efficiency, nutrient allocation, and gas emissions during bioconversion of four waste types by BSFL: chicken manure (CM), former food products (FFPs), vegetable waste (VEG), and a 1:1:1 mixture of these substrates (MIX). The CM treatment served as a control.</p> Results <p>NH<sub>3</sub> emissions were reduced by 27.54% and 13.90% in the VEG and FFPs groups, respectively. However, this was accompanied by decreases in biomass yield (–27.13% and –34.99%, respectively) and bioconversion rate (BCR; –21.09% and –33.90%, respectively). Although larvae grew well in the CM group, greenhouse gas (GHGs) emissions increased by 20.82%. The MIX group demonstrated balanced carbon (C) and nitrogen (N) retention and loss, with increased BCR (+ 11.36%) and biomass yield (+ 13.21%) and reduced NH<sub>3</sub> and GHG emissions by 17.64% and 19.22%, respectively. Moreover, this group exhibited higher larval protein (+ 4.33%) and lipid (+ 1.80%) contents than the CM group. Correlation analysis showed larval biomass yield, protein, bioconversion rate, waste reduction rate, and CO<sub>2</sub> and NH<sub>3</sub> emissions were positively correlated with feed protein content. Additionally, total N content of frass was positively linked to feed carbohydrate and lipid content, both associated with CH<sub>4</sub> and N<sub>2</sub>O emissions.</p> Conclusions <p>Single substrates exhibit constraints, such as restricted biomass yield, poor larvae quality, and elevated environmental emissions. The combined substrate improved process efficiency and diminished emissions, providing a sustainable solution for recycling agri-food waste.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Positive influence of chicken manure mixed with former food products and vegetable waste on black soldier fly larval performance, frass maturity and environmental emissions

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月2日

查看全文
  • Liwen Wang,
  • Guoyan Zhang,
  • Shuaixin Tian,
  • Dongsheng Li,
  • Zhipeng Wu,
  • Yiwei Dong,
  • Hongliang Wang

摘要

Background

Black soldier fly larvae (BSFL) can convert chicken manure into biomass. However, a single chicken manure substrate leads to low efficiency and more emissions due to nutrient imbalance. This study aimed to investigate differences in conversion efficiency, nutrient allocation, and gas emissions during bioconversion of four waste types by BSFL: chicken manure (CM), former food products (FFPs), vegetable waste (VEG), and a 1:1:1 mixture of these substrates (MIX). The CM treatment served as a control.

Results

NH3 emissions were reduced by 27.54% and 13.90% in the VEG and FFPs groups, respectively. However, this was accompanied by decreases in biomass yield (–27.13% and –34.99%, respectively) and bioconversion rate (BCR; –21.09% and –33.90%, respectively). Although larvae grew well in the CM group, greenhouse gas (GHGs) emissions increased by 20.82%. The MIX group demonstrated balanced carbon (C) and nitrogen (N) retention and loss, with increased BCR (+ 11.36%) and biomass yield (+ 13.21%) and reduced NH3 and GHG emissions by 17.64% and 19.22%, respectively. Moreover, this group exhibited higher larval protein (+ 4.33%) and lipid (+ 1.80%) contents than the CM group. Correlation analysis showed larval biomass yield, protein, bioconversion rate, waste reduction rate, and CO2 and NH3 emissions were positively correlated with feed protein content. Additionally, total N content of frass was positively linked to feed carbohydrate and lipid content, both associated with CH4 and N2O emissions.

Conclusions

Single substrates exhibit constraints, such as restricted biomass yield, poor larvae quality, and elevated environmental emissions. The combined substrate improved process efficiency and diminished emissions, providing a sustainable solution for recycling agri-food waste.

Graphical Abstract