2022/8/1/ · Biogas residue with higher C, N, and P was frequently employed as high-quality fertilizers to augment carbon sources. The addition of biogas residue to composting piles promotes microbial activity and enhances C and N bioavailability, preventing the release of N 2 O caused by insufficient C elements (Meng et al., 2016).
2018/8/1/ · Dissolved organic matter (DOM) extracted from composting of biogas residue was characterized using spectroscopic techniques. Spectral parameters, specific UV absorbance at 254 (SUVA 254), ratios of spectral slopes (S R), and humification index (HIX) were used to assess the structural characteristics of the DOM.During composting,
The nirK gene was abundant through composting process. Biogas residues increased the abundance of denitrification genes, resulting in further release of N 2 O. Biochar enhanced nosZ gene abundance and accelerated the reduction of N 2 O. Nitrate reductase (NR), nitrite reductase (NiR), N 2 O reductase (N 2 OR), and ammonia monooxygenase (AMO
2020/7/1/ · Cattle manure prolonged the duration of the thermophilic phase in composting.. A high cattle manure content promoted the degradation of hemicellulose and lignin.. The addition of cattle manure enhanced the degree of humification in the compost.. Cell viability was positively correlated with the biogas residue content.. The addition of
2022/9/1/ · Request PDF | Evaluation of the synergistic effects of biochar and biogas residue on CO2 and CH4 emission, functional genes, and enzyme activity during straw composting | This study examined the
2022/10/1/ · Conclusions. The feasibility and molecular biology of multistage inoculation were investigated in a co-composting system of food waste and biogas residue in this study. The Lactobacillus amylophilus, Geobacillus thermoleovorans, and Bacillus subtilis were successively added, and the findings showed that multistage inoculation could
The maturity of food waste biogas residue during composting was investigated by multivariate interaction of environmental, maturity, and nutrient parameters, using structural equation modeling (SEM). Results showed that the temperature of T2 compost with the microbial consortium increased more rapidly. The pH ranges of T1 (without the microbial
2022/12/1/ · Besides, the introduction of biogas residues may regulate the changes of C, N, P and S elements in the compost system, and biochar and biogas residues can reduce greenhouse gas emissions (Lin et al., 2022, Biochar and biogas residue was used as composting amendments. Biochar was prepared by pyrolysis of rice straw, and
2022/10/8/ · In this study, biogas residue fermented by biogas engineering was used as compost raw material, and different quality biochar was added in the composting process to explore the effect of biochar on the transformation of heavy metals in the composting process. The composting process was comprehensively analyzed with the
At the end of composting, the addition of biogas slurry increased the percentages of Actinobacteria and Bacteroidetes in the T group by 38.72% and 50.26%, respectively, compared to the CK group, also indicating that the addition of biogas slurry can improve the maturity of compost products and reduce the number of pathogens.
2023/12/1/ · Nitrous oxide (N 2 O) production is associated with ammonia-oxidizing bacteria (amoA-AOB) and denitrifying fungi (nirK-fungi) during the incorporation of biochar and biogas residue composting.This research examined the relative contribution of alterations in the abundance, diversity and structure of amoA-AOB and nirK-fungi
2023/3/1/ · Biogas residue can be used as the composting substrate and to adjust the carbon (C)/nitrogen (N) in the pile as well as provide rich functional microorganisms and readily degradable organic matter. Biogas residue addition in composting piles might also prevent the release of greenhouse (e.g., N 2 O) induced by insufficient C elements.
2023/12/1/ · 1. Introduction. With the promotion of “Zero-Waste City” in China, the centralized anaerobic digestion of kitchen wastes produces a large amount of biogas residue (Jin et al., 2021), and its treatment, disposal and resource utilization have become the main problems currently faced.Composting (or humification) is considered to be an
2021/6/15/ · Composting was carried out firstly in a forced aeration composting system (100 L), in which perlite and sawdust were used as additives in different proportions separately or together. Microbial degradation in the co-composting of pig manure and biogas residue using a recyclable cement-based synthetic amendment. Waste …
2022/1/1/ · The company can treat 300 kilotons of livestock and poultry waste (sewage, faeces and urine) per year using a continuous stirred tank reactor, which produces approximately 10 thousand tons of spent biogas residue. In compost plants, biogas residue is used to produce organic fertilizer using static aerobic composting technology.