Effect of inoculation methods on the composting efficiency of municipal solid wastes

Xi, Beidou; He, Xiao-Song; Wei, Zimin; Jiang, Yonghai; Li, Mingxiao; Li, Dan; Li, Ye; Dang, Qiuling

doi:10.1016/j.chemosphere.2012.04.032

Cited by 98 publications

(35 citation statements)

References 24 publications

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“…Xi et al . (2012) suggested that as easily degradable organic matter was consumed promptly by active microbial metabolism in the early stage of composting, the composting substrate primarily contained refractory organic matter, such as cellulose and lignin, in the later stage and the degradation of organic matter slowed down. At the same time, the formation of humic substances became vigorous (Gou et al ., 2017).…”

Section: Resultsmentioning

confidence: 99%

Effect of inoculation with a microbial consortium that degrades organic acids on the composting efficiency of food waste

Song

Zhang

Xia

et al. 2018

Microbial Biotechnology

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SummaryIn order to overcome the excessive acidification problem, a microbial consortium for the degradation of organic acids (MCDOA), which acts synergistically in degrading organic acids, was developed and used as an inoculum to improve the efficiency of food waste composting. MCDOA could eliminate the initial lag phase of the pile temperature rise because of excessive acidification and effectively shorten the composting period. Fluorescence regional integration analysis of the excitation‐emission matrix spectra of dissolved organic matter showed that compared with raw material, in compost with MCDOA inoculation, the percent fluorescence response (P i,n) values of Regions I, II and IV decreased by 95.11%, 94.19% and 87.41%, respectively, and P i,n of Region V increased by 172.57%. The decreased and increased levels were markedly higher than in the two control groups (MgO and K2 HPO 4 treatment, and uninoculated compost). These findings revealed that MCDOA accelerated the degradation of proteinaceous compounds and the formation of complicated humic‐like materials. Bacterial profiles implied that MCDOA could improve the indigenous bacterial community structure and diversities of acetic and propionic acid‐degrading and lignin‐degrading bacteria, which might account for the high composting efficiency and degree of humification of the inoculated compost.

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Section: Resultsmentioning

confidence: 99%

Effect of inoculation with a microbial consortium that degrades organic acids on the composting efficiency of food waste

Song

Zhang

Xia

et al. 2018

Microbial Biotechnology

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“…Ultraviolet‐visible spectroscopy is widely used to characterize the molecular structure of organic matter (Xi et al, 2012). The degree of aromaticity and molecular weight of the DOM are positively correlated with the A 260–280 values (Barje et al, 2012).…”

Section: Resultsmentioning

confidence: 99%

Variation in the Humification Degree of Dissolved Organic Matter from Cattle Manure during Composting as Analyzed by Ultraviolet‐Visible and Fluorescence Spectroscopy

et al. 2017

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This study investigated the degree of humification of dissolved organic matter (DOM) during different periods of cattle manure composting using ultraviolet-visible (UV-vis) and fluorescence spectroscopy (emission, synchronous scan, and excitation-emission matrix) and determined which method is more suitable for analysis of the humification degree of DOM. Two composting piles were prepared by mixing manure and corn straw. One pile (Pile A [PA]) contained inoculated exogenous composite agents at a ratio of 2% (v/v), and a pile without the addition of inoculants (PNA) served as the control treatment. The results showed that ultraviolet integrated absorption intensities in the range of 226 to 400 nm and 260 to 280 nm and specific ultraviolet absorbances at 254 and 280 nm of both PA and PNA gradually increased with composting time. Based on the fluorescence regional integration analysis and parallel factor analysis, the humic-like substances became the main components of the DOM after composting. Our study demonstrated that the humification degree of DOM was enhanced during composting and that the inoculation composite agent was beneficial for the humification of DOM at the mesophilic and thermophilic phases of the composting process. Moreover, the results of correlation analysis and principal component analysis demonstrated that the fluorescence spectral parameters evaluated the humification degree of DOM during the whole cattle manure composting process better than the UV-vis spectral parameters.

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“…Therefore, regulating microorganism is recognized as a feasible way to optimize the compost process. Inoculating exogenous microorganisms with specific function to improve composting efficiency has been reported by many literatures (Xi et al, 2012;Zhao et al, 2016c). Most of them confirmed that inoculation was an effective method, but ubiquitous competition from indigenous microorganisms might weaken incipient role of inoculant.…”

Section: Introductionmentioning

confidence: 94%

A regulating method for reducing nitrogen loss based on enriched ammonia-oxidizing bacteria during composting

Yun

Zhao

Chen

et al. 2016

Bioresource Technology

104

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Effect of inoculation methods on the composting efficiency of municipal solid wastes

Cited by 98 publications

References 24 publications

Effect of inoculation with a microbial consortium that degrades organic acids on the composting efficiency of food waste

Effect of inoculation with a microbial consortium that degrades organic acids on the composting efficiency of food waste

Variation in the Humification Degree of Dissolved Organic Matter from Cattle Manure during Composting as Analyzed by Ultraviolet‐Visible and Fluorescence Spectroscopy

A regulating method for reducing nitrogen loss based on enriched ammonia-oxidizing bacteria during composting

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