Composting of animal manures is believed as an alternative way for directly recycling them in farms, and therefore assessment of compost maturity is crucial for achieving high quality compost. Fluorescence excitation-emission matrices (EEMs) combined with regional integration analysis is presented to assess compost maturity. The results showed that the EEM contours of water-extract organic matter (WEOM) from immature composts exhibited four peaks at excitation/emission (Ex/Em) of 220/340nm, 280/340nm, 220/410nm, and 330/410nm, whereas EEM contour of WEOM from mature composts had only two peaks at Ex/Em of 230/420nm and 330/420nm. Pearson correlation demonstrated that peaks intensity rather than their ratios had a significantly correlation with the common indices assessing compost maturity, whereas the normalized excitation-emission area volumes (Φ(i,n)s) from regional integration analysis had a stronger correlation with the common indices assessing compost maturity than peaks intensity. It is concluded that the Φ(i,n)s from regional integration analysis are more suitable to assess the maturity of compost than the intensities of peaks. Therefore, the fluorescence spectroscopy combined with regional integration analysis can be used as a valuable industrial and research tool for assessing compost maturity, given its high sensitivity and selectivity.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.wasman.2010.10.031 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Synthetic microbial community enhances lignocellulose degradation during composting by assembling fungal communities.
Bioresour Technol
January 2025
Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125 China; Guangxi Industrial Technology Researc Institute for Karst Rocky Desertification Control, Nanning 530000 China; Guangxi Key Laboratory of Karst Ecological Processes and Services, Huanjiang Observation and Research Station for Karst Ecosystems, Chinese Academy of Sciences, Huanjiang 547100 China. Electronic address:
Inoculating synthetic microbial community (SynCom) has been proposed as an eco-friendly approach for lignocellulose degradation in composting to enhance organic fertilizer quality. However, the mechanisms responsible for SynCom-regulated lignocellulose degradation during composting remain unclear. Here the SynCom inoculation decreased cellulose and hemicellulose contents by 26.
View Article and Find Full Text PDFRefluxing Mature Compost to Replace Bulking Agents: A Low-Cost Solution for Suppressing Antibiotic Resistance Genes Rebound in Sewage Sludge Composting.
Environ Res
January 2025
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China. Electronic address:
Antibiotic resistance genes (ARGs) rebounding during composting cooling phase is a critical bottleneck in composting technology that increased ARGs dissemination and application risk of compost products. In this study, mature compost (MR) was used as a substitute for rice husk (RH) to mitigate the rebound of ARGs and mobile genetic elements (MGEs) during the cooling phase of sewage sludge composting, and the relationship among ARGs, MGEs, bacterial community and environmental factors was investigated to explore the key factor influencing ARGs rebound. The results showed that aadD, blaCTX-M02, ermF, ermB, tetX and vanHB significantly increased 4.
View Article and Find Full Text PDFExploring the Influence of Biochar-Supported Nano-Iron Oxide on Phosphorus Speciation Transformation and Bacterial Community Structure in Aerobic Pig Manure Composting Processes.
Microorganisms
December 2024
State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.
Existing studies have demonstrated the positive effects of nano-sized iron oxide on compost maturity, yet the impact of nano-sized iron oxide on phosphorus speciation and bacterial communities during the composting process remains unclear. In this study, pig manure and straw were used as raw materials, with biochar-supported nano-sized iron oxide (BC-FeONPs) as an additive and calcium peroxide (CaO) as a co-agent, to conduct an aerobic composting experiment with pig manure. Four treatments were tested: CK (control), F1 (1% BC-FeONPs), F2 (5% BC-FeONPs), and F3 (5% BC-FeONPs + 5% CaO).
View Article and Find Full Text PDFRecycled calcium polypeptides modulate microbial dynamics and enhance bioconversion in kitchen waste-garden waste co-composting system.
J Environ Manage
January 2025
National Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China. Electronic address:
The kitchen waste and garden waste (KW-GW) co-composting system provides an effective method for recycling these two types of municipal solid waste; however, further improvements are needed to enhance bioconversion performance. This study investigates a novel composting additive, calcium polypeptides (CPPs), derived from waste animal and plant proteins, which can enhance the bioconversion capacity of biomass in the KW-GW co-composting system. As a pH regulator and an available nitrogen source, CPPs significantly increase the compost matrix pH, prolong the thermophilic phase, and reduce emissions of exhaust gases such as CH, NO, NH, and HS by 52.
View Article and Find Full Text PDFMachine learning-based prediction of compost maturity and identification of key parameters during manure composting.
Bioresour Technol
December 2024
School of Resources and Environment, Northeast Agricultural University, Harbin 150030, China. Electronic address:
Evaluating compost maturity, e.g. via manual seed germination index (GI) measurement, is both time-consuming and costly during composting.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!