Succession and diversity of microorganisms and their association with physicochemical properties during green waste thermophilic composting

Liu, Ling; Wang, Shuqi; Guo, Xiaoping; Zhao, Tianzhong; Zhang, Bolin

doi:10.1016/j.wasman.2017.12.026

Cited by 192 publications

(85 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…From the eighteenth day (temperatures between 22 °C and 22.16 °C, the process really began in each treatment. This is in accordance with the theoretical curve of temperature evolution obtained by [18], and the one obtained during the composting of a manure of cattle by [19], in with the composting process began below 20 °C. The addition of wood ash did not impact the composting process because the temperature variation curves of the different treatments (CMA 0%, CMA 5%, CMA 10% and CMA 15%) presented four phases and that is in agreement with the work of [20]: during a slight mesophilic phase between the eighteenth day and the twenty-eighth day, the temperature in all treatments quickly reach 30-30.6 °C.…”

Section: Composting Processsupporting

confidence: 91%

“…The evolution of the temperature during the composting process showed a time of stabilization before the process really begins. The fluctuation of this one was similar to the external environment temperature, and that is in agreement with the work of [18], which showed that at the beginning of the composting process, the temperature of the compost merges with the room temperature (25 °C). From the eighteenth day (temperatures between 22 °C and 22.16 °C, the process really began in each treatment.…”

Section: Composting Processsupporting

confidence: 90%

“…A thermophilic phase between the 28th day (30 °C) and the 41st day (60 °C) might be the result of the intensive microbial activities and the appropriate C/N [20], and were probably due to the addition of wood ash, which act by regulating the free air space within the cow manure, and might be due to the first time when the treatments were turned [22]. That thermophilic phase is also in agreement with the thermophilic phase of the theoretical curve of [18], where the temperature of the thermophilic phase is up to 70 °C. The production of heat during the thermophilic phase may be due to the microorganisms' activities, which is proportional to the oxygen availability in each treatment [23], and in this work, the experiment was done in small buckets of 10 liters (contents: 3kg).…”

Section: Composting Processsupporting

confidence: 78%

“…The production of heat during the thermophilic phase may be due to the microorganisms' activities, which is proportional to the oxygen availability in each treatment [23], and in this work, the experiment was done in small buckets of 10 liters (contents: 3kg). During this phase, we have the presence of an activity of fungi and thermophilic bacteria allowing the rise in temperature, responsible for the destruction of pathogens [17]- [24]- [18]. The presence of a single thermophilic phase during this process, may be explained by the fact that all treatments were homogeneous (consisting mainly of cow manure and ash).…”

Section: Composting Processmentioning

confidence: 94%

See 3 more Smart Citations

Evaluation of Wood Ash as Additive for Cow Manure Composting

2020

View full text Add to dashboard Cite

A B S T R A C TThis study was conducted to produce high-quality compost using both cow manure and wood ash that can specifically be used to increase the fertility of soils in tropical regions. Increased proportions of wood ash were co-composted with cow manure. During composting, the composts produced presented the classical composting temperature curve and attain a thermophilic composting phase (about 60 o C). After 117 days of composting, the produced composts (CMA 0%; CMA 5%; CMA 10% and CMA15%) had a C/N ratio between 16 and 30, and their pH, was basic, indicating maturity. They were rich in minerals (Mg; Ca; K+; and Na+) and poor in heavy metals (Zn; Cu and Pb). Wood ash addition raise the fungal communities except for CMA 0% and did not impair significantly on bacteria communities; however, addition of high amounts of wood ash could reduce the metabolism of the microbial communities including cellulase activity that showed a proportional decrease according to the added amount except for CMA 15%. The composts showed a germination index greater than 80% at all concentrations, indicating the absence of phytotoxicity. Therefore, co-composting of cow manure with wood ash (<15%) allowed to obtain a good organic fertilizer with higher liming potential, nutrient content, and less hazardous material which could be used in farms to remediate acidity of tropical soils.

show abstract

Section: Composting Processsupporting

confidence: 91%

Section: Composting Processsupporting

confidence: 90%

Section: Composting Processsupporting

confidence: 78%

Section: Composting Processmentioning

confidence: 94%

See 2 more Smart Citations

Evaluation of Wood Ash as Additive for Cow Manure Composting

2020

View full text Add to dashboard Cite

show abstract

“…At the beginning of composting, mesophilic microorganisms in the piles decomposed organic matter such as glucose and other carbohydrates and rapidly propagated, which resulted in rising temperatures. However, decreases in readily degradable materials and higher temperatures can reduce microbial metabolism, leading to temperature decreases [20]. The reaction temperature reached 50°C and lasted for over 7 consecutive days, which could adequately reduce pathogens to meet the compost sanitation standard [21].…”

Section: Discussionmentioning

confidence: 99%

Effects of a novel thermophilic cellulose-degrading agent on the quality of compost and change in microbial community of garden waste

Fan

Jia

et al. 2019

Preprint

View full text Add to dashboard Cite

12Knowledge about the microbial communities in composting has advanced, but definitive 13 knowledge concerning the application of actinomycetal communities in garden waste 14 composting is still lacking. In this study, we compared the effects of amending compost with 15 mixed agent M1 (five high-degradability strains) and other agents on the physicochemical 16 indices and microbial community succession. The results showed that Pile A (only applying 17 M1), exhibited a pH closer to neutral, the complete degradation of organic matter, and the 18 highest remaining levels of nitrogen, phosphorus, and potassium. The seed germination rate, 19 root length, and seed germination index values were significantly higher in piles amended 20 with M1 and/or commercially available agents than in piles without exogenous microbial 21 agents. Analyzing the microbial communities, these treatments were dominated by 22 Proteobacteria, Firmicutes, Actinobacteria, and Bacteroidetes during composting. The amount 23 of Streptomyces was negatively correlated with the carbon/nitrogen ratio and positively 24 correlated with total phosphorus and total potassium. Adding M1 increased microbial 25 diversity, and the dominant microbial communities at the end of composting were similar to 26 those found in the commercial microbial inoculum. Overall, agent M1 can shorten the 27 composting process and increase the extent of degradation. This research provides additional 28 insights into the potential function of Actinomycetes in compost ecology. 29 30 31 thermophilic cellulose-degrading bacteria 32 33 34 35 36 37 38 39 40 41 42 43 45 Waste management is one of the main issues affecting all developing nations [1]. In 46 China, with the acceleration of urbanization, the amount of green area coverage is increasing, 47 but tons of organic solid waste are produced with no means for effective decomposition, 48 representing added stress to the environment [2]. The main components of garden waste, 49 lignin and cellulose, are recalcitrant to degradation, leaving only landfilling and direct 50 burning as traditional disposal methods. Traditional landfilling and incineration methods not 51 only use land resources, but also cause other problems, such as dust particle production, soil 52 and groundwater contamination, pathogenic bacteria growth, and air pollution [3]. To lessen 53 the effects of garden waste disposal on the environment and mitigate environmental pollution, 54 biological composting employs microbial action in waste piles to transform organic solid 55 waste into stable humus and organic fertilizer. Biological composting can directly transform 56 large amounts of organic waste for compost production; however, the unreliability of the 57 quantity and biodegradability of the indigenous functional microbial community in compost 58 often leads to low composting efficiency and undesirable compost quality [4]. 59 Many studies have shown that inoculation with exogenous microorganisms is an 60 effective method for the biodegradation of organic matter a...

show abstract

Rapid in‐situ aerobic biodegradation of high salt and oily food waste employing constructed synthetic microbiome

Tao

Wang

et al. 2023

Engineering in Life Sciences

View full text Add to dashboard Cite

The high salt content of food waste (FW) severely limits microbial physiological activity and reduces its biodegradability. In this study, a salt‐tolerant thermophilic bacterial agent that consists of four different substrate degradation functional strains was evaluated for efficient high salt and oily FW in solid‐state aerobic biodegradation disposers. The phy‐chemical properties, enzyme activities, microbial community structure, and function during the biodegradation process were evaluated under high salt (5%) stress. The results showed that the agent promoted the degradation rate, increased the matrix temperature, decreased the moisture content (MC), and enhanced enzyme activities without putrid smell. High‐throughput sequencing indicated community structure succession between different groups and the positive contribution of the inoculated functional strains. During the FW biodegradation process, the Bacillus sp. inoculated was the dominant genus in the agent group. Furthermore, CCA further confirmed the positive effects of the four inoculated strains on high salt and oily FW aerobic biodegradation. Functional prediction and metabolite results both confirmed that the agent was more efficient in carbon, amino acid, and lipid metabolism, which demonstrated that the synthetic microbial consortium holds a potential advantage for efficiency and subsequent resource utilization for organic fertilizer.

show abstract

Succession and diversity of microorganisms and their association with physicochemical properties during green waste thermophilic composting

Cited by 192 publications

References 68 publications

Evaluation of Wood Ash as Additive for Cow Manure Composting

Evaluation of Wood Ash as Additive for Cow Manure Composting

Effects of a novel thermophilic cellulose-degrading agent on the quality of compost and change in microbial community of garden waste

Rapid in‐situ aerobic biodegradation of high salt and oily food waste employing constructed synthetic microbiome

Contact Info

Product

Resources

About