Enhanced effect of ferrous sulfate on nitrogen retention and PBAT degradation during co-composting by combing with biochar-loaded FN1 bacterial composites

Cao L 1 , Wang L 2 , Qi Y 3 , Yang S 2 , Gao J 2 , Liu Q 4 Show all authors , Song L 2 , Hu R 4 , Wang Z 5 , Zhang H 6

Affiliations 

  • 1 China-Malaysia National Joint Laboratory, Biomedical Research Center, Northwest MinZu University, Lanzhou, 730000, China; Key Laboratory for Utility of Environment-Friendly Composites and Biomass in Universities of Gansu Province, Lanzhou, 730000, China
  • 2 Key Laboratory for Utility of Environment-Friendly Composites and Biomass in Universities of Gansu Province, Lanzhou, 730000, China
  • 3 China-Malaysia National Joint Laboratory, Biomedical Research Center, Northwest MinZu University, Lanzhou, 730000, China; Key Laboratory of Environment-Friendly Composites of the State Ethnic Affairs Commission, Lanzhou, 730000, China. Electronic address: qiyj123@xbmu.edu.cn
  • 4 Key Laboratory of Environment-Friendly Composites of the State Ethnic Affairs Commission, Lanzhou, 730000, China
  • 5 China-Malaysia National Joint Laboratory, Biomedical Research Center, Northwest MinZu University, Lanzhou, 730000, China
  • 6 Key Laboratory for Utility of Environment-Friendly Composites and Biomass in Universities of Gansu Province, Lanzhou, 730000, China; Key Laboratory of Environment-Friendly Composites of the State Ethnic Affairs Commission, Lanzhou, 730000, China. Electronic address: gszhangh@126.com
J Environ Manage, 2025 Jan;373:123749.
PMID: 39709662 DOI: 10.1016/j.jenvman.2024.123749

Abstract

The treatment of biodegradable plastics through composting has garnered increasing attention. This study aimed to investigate the effects of Biochar FN1 bacteria and ferrous sulfate on nitrogen retention, greenhouse gas emissions, and degradable plastics during composting and to elucidate their synergistic mechanisms on microbial communities. Compared with the control, applying biochar-loaded FN1 bacteria composites combined with Ferrous sulfate (SGC) markedly accelerated organic matter degradation and reduced cumulative CO2 and NH3 emissions. The synergistic interaction between the composites and Ferrous sulfate significantly enhanced NH4+-N levels in the thermophilic phase and NO3--N levels in the cooling phase, ultimately decreasing nitrogen loss by 14.9% (P 

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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