Effects of digestion duration on energy efficiency, compost quality, and carbon flow during solid state anaerobic digestion and composting hybrid process.
TL;DR: In this paper, the authors investigated the effects of anaerobic digestion duration on methane yield, net energy production, and humification of compost during Solid State Anaerobic Digestion (SSAD) and composting hybrid process for food waste treatment.
About: This article is published in Science of The Total Environment.The article was published on 2021-11-03 and is currently open access. It has received 8 citations till now. The article focuses on the topics: Compost & Digestate.
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TL;DR: In this paper , the effect of multistage inoculation on the co-composting performance of food waste and biogas residue was explored, and compared to the single-stage inoculation and non-inoculation groups, the multi-stage immunization pattern prolonged the thermophilic period during composting, consequently improving organic matter decomposition and humification.
12 citations
TL;DR: In this article , the authors used multi-omics analysis to investigate the inhibition mechanism of seed germination by chicken manure and cornstalk and found that chicken manure caused destructive inhibition of seed growth with higher phytotoxicity.
3 citations
TL;DR: In this paper , the molecular dynamics and transformation pathways of dissolved organic matter (DOM) in sewage sludge (SS) during composting, and the DOM of raw material, material experiencing thermophilic phase and material collected from humification phase were characterized using electrospray ionization coupled with Fourier transform ion cyclotron resonance mass spectrometry.
Abstract: The aim of the study was to explore the molecular dynamics and transformation pathways of dissolved organic matter (DOM) in sewage sludge (SS) during composting, and the DOM of raw material, material experiencing thermophilic phase and material collected from humification phase were characterized using electrospray ionization coupled with Fourier transform ion cyclotron resonance mass spectrometry. The results indicated that there were approximately 85% of aliphatic/proteins and 75% of carbohydrate preferentially decomposed in the thermophilic phase. Moreover, lignins/carboxylic-rich alicyclic molecules (CRAM) were the main N-containing substances evolved in the decomposition, which leading to a reduction of N/C ratio from 0.073 to 0.041. Whereas aliphatic acids and tryptophan in lignins/CRAM with high oxidizing capacities are preferentially decomposed in the thermophilic phase. As for maturity phase, the carbon of the newly generated compounds (belonging to lignins/CRAM and tannins), possessed an oxidation state that similar to sulfonates and sulfonamides, and these DOM are beneficial for the humic substances formation. Moreover, it was found that the newly formed N2Ox and N3Ox compounds had a more significant contribution to the double bond equivalent (DBE) of the compost, corresponding to 1.0 and 1.7 DBE, respectively. The results would help explore the understanding of DOM transformation and humification during SS composting in the microscopic molecular level.
TL;DR: In this paper , a comprehensive study of leachate management is presented, in which different treatment methods are discussed to analyze the suitability of processes that can be employed to treat leachates efficiently.
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TL;DR: The possibilities of Methanosarcina sp.
624 citations
TL;DR: The effects of pH, temperature, and organic loading rate (OLR) on the acidogenesis of food waste have been determined and the percentage of acetate and valerate increased as OLR increased, whereas a high OLR produced a lower percentage of propionate and butyrate.
438 citations
TL;DR: In this review, different types of composting methods reportedly applied in waste management were explored and the major factors such as temperature, pH, C/N ratio, moisture, particle size, and relevant strategies to improve and optimize process effectiveness were addressed.
359 citations
TL;DR: The main challenges of the process of food waste composting are analyzed and the crucial aspects related to the quality of the produced compost are examined, such as the presence of impurities.
356 citations
TL;DR: The results obtained show that the composting process decreased aliphatics, alcohols, polysaccharides, as well as protein- like materials, and increased aromatic polycondensation, humification, oxygen-containing functional groups, molecular weight, and humic-like materials.
232 citations