Role of psychrotrophic bacteria in organic domestic waste composting in cold regions of China

Hou, Ning; Wen, Luming; Cao, Huiming; Liu, Keran; An, Xiaopeng; Li, Dapeng; Wang, Hailan; Du, Xiaodong; Li, Chunyan

doi:10.1016/j.biortech.2017.03.166

Cited by 70 publications

(27 citation statements)

References 32 publications

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“…In other words, organic content degraded by a microorganism could be used for the growth of others. Although further studies were required to validate this conclusion we have at least illustrated literature examples of microbial interaction and their effect on composting in "Discussion" section (Hou et al, 2017;Xie et al, 2017). It was our belief that results obtained with this study had been useful in providing a contribution to ongoing studies.…”

Section: Resultsmentioning

confidence: 74%

Extreme Processing Conditions Applied in Selection of Different Microorganisms Utilized as Compost Enhancers

Koçak

Değirmenci

2018

Türkiye Tarımsal Araştırmalar Dergisi

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Present study included isolation of microorganisms during the mesophilic stage of composting and their reuse in compost mixture to enhance organic matter degradation. Effect of microorganism addition on compost degradation was investigated in the presence of microorganisms obtained by isolation from a miniscule composting system. Effects of water addition and time of mixing were applied as extreme composting conditions. Isolates were obtained from these systems and inoculated to determine the most resistant microorganisms. 16S rRNA sequencing of selected strains indicated the presence of Escherichia, Enterococcus and Streptomyces genus. These microorganisms were added to a large-scale compost mixture to accelerate degradation of organic matter. Results indicated 20 and 38% decreases of organic matter in the sole utilization of Streptomyces sp. K1P07 and ternary utilization at the end of 14 days. Escherichia and Enterococcus inhibited degradation in the case of binary utilization. Isolation of microorganisms from the original flora of the compost mixture had accelerated composting due to interaction among themselves. Member of Actinomycetes, in particular, was shown to be effective even in the case of sole utilization. Higher amounts of biomass-oriented wastes could be removed since composting would be terminated in shorter times with the use of these microorganisms.

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Section: Resultsmentioning

confidence: 74%

Extreme Processing Conditions Applied in Selection of Different Microorganisms Utilized as Compost Enhancers

Koçak

Değirmenci

2018

Türkiye Tarımsal Araştırmalar Dergisi

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“…Based on these results LJH19 presents the considerable potential of hydrolysing complex polysaccharides (starch, cellulose and xylan) which are the major constituents of residues used in NSC while surviving under low ambient temperature. It is critical for a bacterium to thrive in cold regions as well as to perform collectively, ensuring efficient composting (Hou et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

“…Microbial involvement for rapid decomposition in a cold climate (below 20°C) using psychrotrophic bacterial consortium has been emphasized earlier (Hou et al, 2017). Here, a psychrotrophic bacterial community weighs special attention to accelerate the biodegradation process in night soil composting.…”

Section: Introductionmentioning

confidence: 95%

“…Here, a psychrotrophic bacterial community weighs special attention to accelerate the biodegradation process in night soil composting. The lower microbial load in the initial composting process delays the mesophilic phase due to slower biomass degradation resulting in a shorter thermophilic phase (Hou et al, 2017). These conditions subsequently affect the maturity of compost and risks safety and contamination (Millner et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Investigation of a night soil compost psychrotrophic bacteriumGlutamicibacter arilaitensisLJH19 for its safety, efficient hydrolytic and plant growth-promoting potential

Borker

Thakur

Kumari

et al. 2020

Preprint

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“…Therefore, agent M1 might have induced higher microbial activity and a stronger degradation of complex substrates than the commercial microbial agents and indigenous microorganisms in compost. Compost with a C/N ratio of 12 can be considered as mature [32]. Amendment with agent M1 decreased the C/N ratio of the compost lower than the commercial agent and natural compost, which could have a positive effect on soil fertility [33].…”

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

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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...

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Role of psychrotrophic bacteria in organic domestic waste composting in cold regions of China

Cited by 70 publications

References 32 publications

Extreme Processing Conditions Applied in Selection of Different Microorganisms Utilized as Compost Enhancers

Extreme Processing Conditions Applied in Selection of Different Microorganisms Utilized as Compost Enhancers

Investigation of a night soil compost psychrotrophic bacteriumGlutamicibacter arilaitensisLJH19 for its safety, efficient hydrolytic and plant growth-promoting potential

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

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