Industrial-scale food waste composting: Effects of aeration frequencies on oxygen consumption, enzymatic activities and bacterial community succession

Zhang, Shuchi; Wang, Jingli; Chen, Xu; Gui, Jiaxi; Sun, Yue; Wu, Donglei

doi:10.1016/j.biortech.2020.124357

Cited by 58 publications

(23 citation statements)

References 41 publications

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“…The occurrence of these peaks demonstrates the importance of turning during composting development, as the turning process promotes the homogenization of the piled content, in addition to allowing the moisture of this material to be adjusted (Nguyen and Shima, 2019). Similar results were reported by Zhang et al (2021), who conducted turnings during composting in static windrows and found out that there was an immediate increase in temperature after this procedure, promoting the better distribution of heat and moisture in the material.…”

Section: Resultssupporting

confidence: 77%

Might be the forced aeration an alternative to improve the efficiency of composting and quality of fertilizer?

Oliveira

Orrico

Vilela

et al. 2022

Preprint

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The objective of this study was to evaluate the influence of forced aeration and season on hatchery waste composting in static windrows with perforated walls. there were three well-defined thermophilic phases during composting, with the first occurring immediately after the formation of the windrows and the others occurring after turnovers at 50 and 70 days of composting. Aeration resulted in greater degradation (p<0.01) of volatile solids (VS), carbon (C), and lignin in the composting windrows during the summer up to 50 days of process, in comparison to no aeration piles. However, at 70 and 90 days of composting, the results were similar between aerated and nonaerated windrows. The greatest (p<0.01) degradation of nitrogen (N) occurred during the winter and in the absence of aeration (55.25%). Season influenced (p<0.05) the concentrations of humic acids, and they were higher in the compost generated during the summer than generated during the winter. The concentrations of Mg, Fe and Na were influenced by the season, with higher values (p<0.01) in the summer, however they were not affected by aeration. In the winter, aeration is recommended after 50 days of composting, whereas in summer, forced aeration is beneficial for N conservation and humic acid formation.

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Section: Resultssupporting

confidence: 77%

Might be the forced aeration an alternative to improve the efficiency of composting and quality of fertilizer?

Oliveira

Orrico

Vilela

et al. 2022

Preprint

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“…Organic waste treatment methods commonly used in developing countries include use as feed (rare), compost (1% to 6%), anaerobic digestion (<0.6%), and incineration and landfills (>90%) (Thi et al, 2015;Puspitaloka et al, 2022). Compost produced for agricultural use from food waste has received considerable attention, due to its low cost and the possibility of on-site processing (Awasthi et al, 2021), being recently considered a promising solution for organic waste treatment (Zhang et al, 2021). Composting involves transforming organic matter into a stable and nutrient-enriched biofertilizer, through the succession of microbial populations into a stabilized product and is considered an efficient and inexpensive technology for recycling organic waste (Zhang and Sun, 2018;Obeng et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…During the composting process, specific parameters are important to obtain quality compost, such as the C/N ratio, oxygen availability, pH, temperature, aeration, moisture content, type of composter, particle size, composting time, and humic acid presence, usually produced at the end of composting (Abdolali et al, 2014;Li et al, 2017;Wang et al, 2021b;Zhang et al, 2021). In addition, pile turning during the degradation stage is key to maintaining microbial diversity and, to some extent, the population profile present at the beginning of the process (Antunes et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Generally, the composting occurs with natural microbiota, including bacteria, actinobacteria, yeasts, and filamentous fungi, which are generally involved in the degradation of lignocellulosic components during aerobic composting, but make the composting process too long (Bohacz, 2017;Zhang et al, 2021;Wang et al, 2022). However, the utilization of biological methods such as the inoculation of selected microorganisms can provide high efficiency for waste management.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dynamics of microbiota and physicochemical characterization of food waste in a new type of composter

Gaspar

Assis²,

Carvalho³

et al. 2022

Front. Sustain. Food Syst.

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Organic wastes are considered the most significant components of urban solid waste, negatively affecting the environment. It is essential to use renewable resources to minimize environmental risks. Composting is one of the most sustainable methods for managing organic waste and involves transforming organic matter into a stable and nutrient-enriched biofertilizer, through the succession of microbial populations into a stabilized product. This work aimed to evaluate the efficiency of the new type of composter and the microbial and physiochemical dynamics during composting aiming to accelerate the degradation of organic waste and produce high-quality compost. Two inoculants were evaluated: (1) efficient microorganisms (EM); (2) commercial inoculum (CI), which were compared to a control treatment, without inoculation. Composting was performed by mixing organic waste from gardening with residues from the University's Restaurant (C/N ratio 30:1). The composting process was carried out in a 1 m3 composter with controlled temperature and aeration. The thermophilic phase for all treatments was reached on the second day. Mature compost was obtained after an average of 120 days, and composting in all treatments showed an increase in the availability of P and micronutrients. The new composter helped to accelerate the decomposition of residues, through the maintenance of adequate oxygen content and temperature control inside the cells, providing high metabolic activity of microorganisms, contributing to an increase in physicochemical characteristics, also reducing the composting time in both treatments. During composting, the bacteria and actinobacteria populations were higher than yeasts and filamentous fungi. The inoculated treatments presented advantages showing more significant mineralization of P-available and micronutrients such as Mn and Zn in terms of the quality of the final product in comparison to the control treatment. Finally, the new composter and the addition of inoculants contributed significantly to the efficiency of the process of composting organic waste.

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“…In the course of biothermal processes, compounds that are easily assimilated by plants are formed in the compost. Compost additives reduce organic matter and nitrogen losses [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Influence of Gypsum-Containing Waste on Ammonia Binding in Animal Waste Composting

et al. 2021

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The possibility of using gypsum-containing waste–citrogypsum, which is a by-product of the chemical biosynthesis of citric acid, was considered as an additive for composting poultry manure from poultry farms that practice litter-free poultry keeping. The research was carried out on an experimental batch of 1500 tons. The production of the batch was carried out by mixing citrogypsum with a moisture content of 30% and litterless chicken manure with a moisture content of no more than 80% in a ratio of 1:2. The resulting mixture was placed on an open landfill in piles 3 m wide, 1 m high and 400 m long and was mixed twice with a compost turner. Further processing consisted of mixing the mass once every seven days. The controlled parameters were changes in humidity, temperature, pH and nitrogen content during composting. In the course of the experiment, it was found that the introduction of citrogypsum into the composition of the compost helps to optimize the moisture, temperature and pH of the mixture, and a decrease in ammonia emission to 87% was recorded, with an increase in nitrogen content of 2.4 times compared to the initial value. It was concluded that citrogypsum can be used in composting poultry waste to reduce volatilization of ammonia and preserve nutrients.

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Industrial-scale food waste composting: Effects of aeration frequencies on oxygen consumption, enzymatic activities and bacterial community succession

Cited by 58 publications

References 41 publications

Might be the forced aeration an alternative to improve the efficiency of composting and quality of fertilizer?

Might be the forced aeration an alternative to improve the efficiency of composting and quality of fertilizer?

Dynamics of microbiota and physicochemical characterization of food waste in a new type of composter

Influence of Gypsum-Containing Waste on Ammonia Binding in Animal Waste Composting

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