Synergistic improvement of humus formation in compost residue by fenton-like and effective microorganism composite agents

Jun Zhuo CAI, Ying Lan YU, Zhan Biao YANG, Xiao Xun XU, Guo Chun LV, Chang Lian XU, Gui Yin WANG, Xin QI, Ting LI, Yu Bon MAN, Ming Hung WONG, Zhang CHENG

Research output: Contribution to journalArticlespeer-review

Abstract

Improving the humification of compost through a synergistic approach of biotic and abiotic methods is of great significance. This study employed a composite reagent, comprising Fenton-like agents and effective microorganisms (EM) to improve humification. This composite reagent increased humic-acid production by 37.44 %, reaching 39.82 g kg−1, surpassing the control group. The composite reagent synergistically promoted micromolecular fulvic acid and large humic acid production. Collaborative mechanism suggests that Fenton-like agents contributed to bulk residue decomposition and stimulated the evolution of microbial communities, whereas EMs promoted highly aromatic substance synthesis and adjusted the microbial community structure. Sequencing analysis indicates the Fenton-like agent initiated compost decomposition by Firmicutes, and EM reduced the abundance of Virgibacillus, Lentibacillus, and Alcanivorax. Applied as an organic fertilizer in Brassica chinensis L. plantations, the composite reagent considerably improved growth and photosynthetic pigment content. This composite reagent with biotic and abiotic components provides a learnable method for promoting humification. Copyright © 2024 Elsevier Ltd. All rights reserved.

Original languageEnglish
Article number130703
JournalBioresource Technology
Volume400
Early online dateApr 2024
DOIs
Publication statusPublished - May 2024

Citation

Cai, J. Z., Yu, Y. L., Yang, Z. B., Xu, X. X., Lv, G. C., Xu, C. L., Wang, G. Y., Qi, X., Li, T., Man, Y. B., Wong, M. H., & Cheng, Z. (2024). Synergistic improvement of humus formation in compost residue by fenton-like and effective microorganism composite agents. Bioresource Technology, 400, Article 130703. https://doi.org/10.1016/j.biortech.2024.130703

Keywords

  • Artificial humification
  • Fenton reaction
  • Maggot-converted residues
  • Bacterial structure
  • Organic fertilizer

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