Exploring the characteristics of dissolved organic matter and succession of bacterial community during composting

Jiang, Zhiwei; Lu, Yanyu; Xu, Jiaqi; Li, Mingqi; Shan, Guangchun; Li, Qunliang

doi:10.1016/j.biortech.2019.121942

Cited by 94 publications

(24 citation statements)

References 48 publications

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“…Acinetobacter was regarded as sulfur-metabolizing bacteria (He et al 2018;Ding et al 2019), which is compatible with the concentrations of sulfate found in 1_3 (Fig. 2), and has also been associated with the thermophilic phase of composting (Jiang et al 2019).…”

Section: Taxonomic Analysis At the Level Of Phylasupporting

confidence: 62%

“…Bacteria belonging to the phylum Firmicutes have been associated with a degradation of polysaccharides-such as cellulose, lignocellulose, and starch (Song et al 2015;Xu et al 2017;Zainun and Simarani 2018;Jiang et al 2019)playing an important role in the synthesis of fulvic-like substances and humification (Liu et al 2019) and in the formation of dissolved organic matter (Jiang et al 2019). This role seemed to be well associated with the physicochemical analysis performed in the present study, since the Up point had the lowest representation of Firmicutes, and site 1 (especially 1_2 and 1_3), which presented the highest concentrations of organic matter, showed significant communities of Firmicutes (see Figs.…”

Section: Taxonomic Analysis At the Level Of Phylamentioning

confidence: 99%

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Microbial structure and diversity in non-sanitary landfills and association with physicochemical parameters

Morita

Sakamoto

Varesche

et al. 2020

Environ Sci Pollut Res

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This study assessed the bacterial populations in a non-sanitary landfill around Guarani Aquifer recharge zone in Brazil. Samples from two different positions (sites 1 and 2) at three different depths were evaluated, totaling six solid waste samples; two samples from an impacted stream were also collected. 16S rRNA sequencing was performed using the Ion S5TM XL platform; 3113 operational taxonomic units (OTUs) and 52 phyla were identified. Proteobacteria (37%) and Firmicutes (28%) were the most abundant phyla in the landfill, whereas Proteobacteria (~50%) and Bacteroidetes (~10%) were more profuse in surface water samples. Canonical correlation analysis (CCA) enabled us to clearly separate the samples according to their spatial location (site 1 or 2) or environmental matrix (surface water or solid waste samples), showing that microbiological populations are strongly associated with site-specific conditions and the kind of environmental matrix they come from. Environmental factors that mostly influenced the microbial communities were organic matter, oxidation-reduction potential, moisture, alkalinity, nitrogen (TKN), sodium, potassium, and zinc. Exiguobacterium (phylum Firmicutes) was overwhelmingly dominant at site 1 and was associated with higher concentrations of organic matter and potassium. Differently, site 2 did not present such dominant genera and was more diverse having lower concentrations of organic matter and nutrients. Distinct environments co-exist inside the same waste deposit, including zones which are representative of active and closed landfills and the occurrence of considerable physicochemical and microbiological shifts within short distances. Those shifts indicate that microbial populations are well adapted to the heterogeneity typical of urban solid waste, which is possibly beneficial to contaminant degradation.

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Section: Taxonomic Analysis At the Level Of Phylasupporting

confidence: 62%

Section: Taxonomic Analysis At the Level Of Phylamentioning

confidence: 99%

Microbial structure and diversity in non-sanitary landfills and association with physicochemical parameters

Morita

Sakamoto

Varesche

et al. 2020

Environ Sci Pollut Res

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“…While bacteria are responsible for a large proportion of decomposition and heat generation in compost (Lopez-Gonzalez et al, 2015), fungi are capable of decomposing complex polymers present in the compost (Yamamoto and Nakai, 2019). While the succession of microbial communities during different composting stages have been studied extensively (Nakasaki et al, 2005;Jiang et al, 2019), there is less information on how the initial manure metataxonomy composition affects composting. The initial compost metataxonomy composition is important because it affects the proliferation of mesophilic microbiota which are responsible for the rapid rise of composting temperature (De Gannes et al, 2013) and creation of a suitable environment for the secondary microorganisms during composting (Ryckeboer et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Livestock Manure Type Affects Microbial Community Composition and Assembly During Composting

et al. 2021

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Composting is an environmentally friendly way to turn plant and animal wastes into organic fertilizers. However, it is unclear to what extent the source of animal waste products (such as manure) affects the physicochemical and microbiological properties of compost. Here, we experimentally tested how the type of livestock manure of herbivores (sheep and cattle) and omnivores (pig and chicken) influences the bacterial and fungal communities and physicochemical properties of compost. Higher pH, NO3-N, Total carbon (TC) content and C/N were found in sheep and cattle manure composts, while higher EC, NH4-N, Total nitrogen (TN) and total phosphorus (TP) content were measured in pig and chicken manure composts. Paired clustering between herbivore and omnivore manure compost metataxonomy composition was also observed at both initial and final phases of composting. Despite this clear clustering, all communities changed drastically during the composting leading to reduced bacterial and fungal diversity and large shifts in community composition and species dominance. While Proteobacteria and Chloroflexi were the major phyla in sheep and cattle manure composts, Firmicutes dominated in pig and chicken manure composts. Together, our results indicate that feeding habits of livestock can determine the biochemical and biological properties of manures, having predictable effects on microbial community composition and assembly during composting. Manure metataxonomy profiles could thus potentially be used to steer and manage composting processes.

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“…A total of 3,639, 7,978, and 4,646 OTUs were retrieved at MEP, THP, and COP, respectively. Apparently, the richness of the bacterial community in the multi-component compost was significantly higher than that of the two-component compost (p < 0.01) (Jiang et al, 2019). Also, unique OTUs, that is, non-shared OTUs were observed in each stage, especially THP, where unique OTUs accounted for 46.35% of the total OTUs, suggesting that the blooms of some specific bacteria may get involved in degrading organic matter which occurred in the thermophilic phase.…”

Section: Microbial Communitymentioning

confidence: 80%

Full-Scale of a Compost Process Using Swine Manure, Human Feces, and Rice Straw as Feedstock

Gao

Zhang

Tan

et al. 2022

Front. Bioeng. Biotechnol.

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Regarding the composting of rural waste, numerous studies either addressed the composting of a single waste component or were conducted at a laboratory/pilot scale. However, far less is known about the mixed composting effect of multi-component rural waste on a large scale. Here, we examined nutrient transformation, maturity degree of decomposition, and succession of microbial communities in large-scale (1,000 kg mixed waste) compost of multi-component wastes previously optimized by response models. The results showed that multi-component compost can achieve the requirement of maturity and exhibit a higher nutritional value in actual compost. It is worth noting that the mixed compost effectively removed pathogenic fungi, in which almost no pathogenic fungi were detected, and only two pathogenic bacteria regrown in the cooling and maturation stages. Structural equation models revealed that the maturity (germination index and the ratio of ammonium to nitrate) of the product was directly influenced by compost properties (electrical conductivity, pH, total organic carbon, moisture, temperature, and total nitrogen) compared with enzymes (cellulase, urease, and polyphenol oxidase) and microbial communities. Moreover, higher contents of total phosphorus, nitrate-nitrogen, and total potassium were conducive to improving compost maturity, whereas relatively lower values of moisture and pH were more advantageous. In addition, compost properties manifested a remarkable indirect effect on maturity by affecting the fungal community (Penicillium and Mycothermus). Collectively, this evidence implies that mixed compost of multi-component rural waste is feasible, and its efficacy can be applied in practical applications. This study provides a solution for the comprehensive treatment and utilization of rural waste.

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Exploring the characteristics of dissolved organic matter and succession of bacterial community during composting

Cited by 94 publications

References 48 publications

Microbial structure and diversity in non-sanitary landfills and association with physicochemical parameters

Microbial structure and diversity in non-sanitary landfills and association with physicochemical parameters

Livestock Manure Type Affects Microbial Community Composition and Assembly During Composting

Full-Scale of a Compost Process Using Swine Manure, Human Feces, and Rice Straw as Feedstock

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