Using excitation-emission matrix-parallel factor analysis to access the effect of temperature parameters on the humification of community kitchen waste compost

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING Biomass & Bioenergy Pub Date : 2025-03-21 DOI:10.1016/j.biombioe.2025.107787

Xiaonan Liang, Pan Wang, Yansong Zhang, Yingnan Li, Cheng Ji, Xingyao Meng, Lianhai Ren

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Abstract

Decentralized community composting has emerged as an alternative solution to kitchen waste (KW). In this experiment, temperature-controlled composting was carried out using a small-scale KW composting bin, and the change of dissolved organic matter caused by microorganisms was analyzed by excitation-emission matrix-parallel factor analysis. The results showed that keeping the temperature of the composting bin at 60 °C could shorten the composting cycle to 14 days, accelerate the degradation of proteins in the composting, and promote the formation of humic acids. Bacterial community analysis exhibited that the abundance of pathogens (Staphylococcus) was decreased, the abundance of beneficial bacteria (Bacillus, Pseudomonas) was elevated in 60 °C group, and the cooperation between microorganisms was enhanced. Metabolic function prediction exhibited that the conversion of pyruvate to acetyl coenzyme A was promoted and the abundance of the enzymes in the tricarboxylic acid cycle was altered, thereby stabilizing the composting system in 60 °C group.

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来源期刊

Biomass & Bioenergy 工程技术-能源与燃料

CiteScore

11.50

自引率

3.30%

发文量

258

审稿时长

60 days

期刊介绍： Biomass & Bioenergy is an international journal publishing original research papers and short communications, review articles and case studies on biological resources, chemical and biological processes, and biomass products for new renewable sources of energy and materials. The scope of the journal extends to the environmental, management and economic aspects of biomass and bioenergy. Key areas covered by the journal: • Biomass: sources, energy crop production processes, genetic improvements, composition. Please note that research on these biomass subjects must be linked directly to bioenergy generation. • Biological Residues: residues/rests from agricultural production, forestry and plantations (palm, sugar etc), processing industries, and municipal sources (MSW). Papers on the use of biomass residues through innovative processes/technological novelty and/or consideration of feedstock/system sustainability (or unsustainability) are welcomed. However waste treatment processes and pollution control or mitigation which are only tangentially related to bioenergy are not in the scope of the journal, as they are more suited to publications in the environmental arena. Papers that describe conventional waste streams (ie well described in existing literature) that do not empirically address ''new'' added value from the process are not suitable for submission to the journal. • Bioenergy Processes: fermentations, thermochemical conversions, liquid and gaseous fuels, and petrochemical substitutes • Bioenergy Utilization: direct combustion, gasification, electricity production, chemical processes, and by-product remediation • Biomass and the Environment: carbon cycle, the net energy efficiency of bioenergy systems, assessment of sustainability, and biodiversity issues.