Effects of fungal agents and biochar on odor emissions and microbial community dynamics during in-situ treatment of food waste

Shu-Ping Zou; Ru-Sheng Liu; Yu Luo; Chun-Tao Bo; Su-Qin Tang; Ya-Ping Xue; Yu-Guo Zheng

doi:10.1016/j.biortech.2023.129095

Effects of fungal agents and biochar on odor emissions and microbial community dynamics during in-situ treatment of food waste

Bioresour Technol. 2023 Jul:380:129095. doi: 10.1016/j.biortech.2023.129095. Epub 2023 Apr 24.

Authors

Shu-Ping Zou¹, Ru-Sheng Liu¹, Yu Luo¹, Chun-Tao Bo¹, Su-Qin Tang², Ya-Ping Xue³, Yu-Guo Zheng¹

Affiliations

¹ Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China; Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, China.
² Hangzhou Environmental Group Company Limited, Hangzhou 310022, China.
³ Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China; Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, China. Electronic address: xyp@zjut.edu.cn.

PMID: 37100303
DOI: 10.1016/j.biortech.2023.129095

Abstract

The effects of the co-addition of fungal agents and biochar on physicochemical properties, odor emissions, microbial community structure, and metabolic functions were investigated during the in-situ treatment of food waste. The combined addition of fungal agents and biochar decreased cumulative NH₃, H₂S, and VOCs emissions by 69.37%, 67.50%, and 52.02%, respectively. The predominant phyla throughout the process were Firmicutes, Actinobacteria, Cyanobacteria, and Proteobacteria. Combined treatment significantly impacted the conversion and release of nitrogen from the perspective of the variation of nitrogen content between different forms. FAPROTAX analysis revealed that the combined application of fungal agents and biochar could effectively inhibit nitrite ammonification and reduce the emission of odorous gases. This work aims to clarify the combined effect of fungal agents and biochar on odor emission and provide a theoretical basis for developing an environmentally friendly in-situ efficient biological deodorization (IEBD) technology.

Keywords: Biochar; Deodorization; Food waste treatment; Fungal inoculum; Microbial community.

MeSH terms

Charcoal / pharmacology
Food
Microbiota*
Nitrogen / analysis
Odorants
Refuse Disposal*
Soil / chemistry

Substances

Soil
biochar
Nitrogen
Charcoal