Dissolved organic matter fractions formed during composting of winery and distillery residues: Evaluation of the process by fluorescence excitation–emission matrix

Marhuenda-Egea, Frutos C.; Martínez-Sabater, Encarnación; Jordá, Juana D.; Moral, R.; Bustamante, M.A.; Paredes, C.; Pérez-Murcia, M.D.

doi:10.1016/j.chemosphere.2006.12.075

Cited by 165 publications

(87 citation statements)

References 33 publications

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“…According to Marhuenda‐Egea et al . (2007), peak T1 is associated with soluble microbial byproduct‐like substances and the peaks T2 and T3 are involved in aromatic protein‐like fluorescence, such as tyrosine and tryptophan. In addition to the aforementioned three peaks, the EEM spectra of DOM extracted from the AC and C samples were also characterized by the peaks a, b and c. According to He et al .…”

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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“…At low concentrations, these materials are directly proportional to fluorescence intensity and thus fluorescence intensity may be, applied to assess compost maturity (Henderson et al, 2009;Moral et al, 2009;Plaza et al, 2007). Application of fluorescence spectroscopy as a tool for assessment of compost maturity is well documented, because of the high instrumental sensitivity of this technique when compared to other available approaches (Antízar-Ladislao et al, 2006;Droussi et al, 2009;Huang et al, 2009;Marhuenda-Egea et al, 2007;Plaza et al, 2007;Provenzano et al, 2001;Richard et al, 2009;Shao et al, 2009;Wei et al, 2007). Nevertheless, analysis of fluorescence EEM has generally been limited to visual identification of peaks or development of ratios of fluorescence intensities in different regions of the spectrum.…”

Section: Introductionmentioning

confidence: 98%

PARAFAC modeling of fluorescence excitation−emission spectra for rapid assessment of compost maturity

Luo

et al. 2010

Bioresource Technology

110

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“…This is in accordance with previous studies on composting . However, along with bio-drying, the fluorescent intensity of regions III and V was gradually reduced and then remained constant, which is relatively different from composting because regions III and V were generally used to represent the maturity of composting (Marhuenda-Egea et al 2007). Although the aeration time was much higher in the latter area, the components of the DOM changed little (Fig.…”

Section: Evolution Of Dom In Sludge Bio-dryingmentioning

confidence: 98%

Effects of aeration strategy on the evolution of dissolved organic matter (DOM) and microbial community structure during sludge bio-drying

Zhang

Cai

et al. 2015

Appl Microbiol Biotechnol

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Sludge bio-drying in which sludge is dried by means of the heat generated by the aerobic degradation of its own organic substances has been widely used for sludge treatment. A better understanding of the evolution of dissolved organic matter (DOM) and its degradation drivers during sludge bio-drying could facilitate its control. Aeration is one of the key factors that affect sludge bio-drying performance. In this study, two aeration strategies (pile I-the optimized and pile II-the current) were established to investigate their impacts on the evolution of DOM and the microbial community in a full-scale sludge bio-drying plant. A higher pile temperature in pile I caused pile I to enter the DOM and microbiology stable stage approximately2 days earlier than pile II. The degradation of easily degradable components in the DOM primarily occurred in the thermophilic phase; after that degradation, the DOM components changed a little. Along with the evolution of the DOM, its main degradation driver, the microbial community, changed considerably. Phyla Firmicutes and Proteobacteria were dominant in the thermophilic stage, and genus Ureibacillus, which was the primary thermophilic bacteria, was closely associated with the degradation of the DOM. In the mesophilic stage, the microbial community changed significantly at first and subsequently stabilized, and the genus Parapedobacter, which belongs to Bacteriodetes, became dominant. This study elucidates the interplay between the DOM and microbial community during sludge bio-drying.

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Dissolved organic matter fractions formed during composting of winery and distillery residues: Evaluation of the process by fluorescence excitation–emission matrix

Cited by 165 publications

References 33 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

PARAFAC modeling of fluorescence excitation−emission spectra for rapid assessment of compost maturity

Effects of aeration strategy on the evolution of dissolved organic matter (DOM) and microbial community structure during sludge bio-drying

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