Spectroscopic characterization of water extractable organic matter during composting of municipal solid waste

He, Xiao-Song; Xi, Beidou; Wei, Zimin; Guo, Xujing; Li, Mingxiao; An, Da; Liu, Hongliang

doi:10.1016/j.chemosphere.2010.10.057

Cited by 249 publications

(81 citation statements)

References 37 publications

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“…In addition, the humic‐ and fulvic‐like peaks (a, b and c) exhibited an obvious increase in fluorescence intensity in AC. The biostabilization of composting organic matter includes several stages: the disappearance of some easily biodegradable compounds like protein‐like materials, the formation of humic‐ and fulvic‐like substances with a low degree of aromatic polycondensation and the synthesis of humic macromolecules by the transformation of humic‐ and fulvic‐like materials with simple structures (He et al ., 2011a). Generally, fulvic‐like compounds and humic‐like substances with short wavelengths first increased and then decreased with composting time.…”

Section: Resultsmentioning

confidence: 99%

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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%

“…(2011a). Briefly, the composting samples were extracted with deionized water using a sample: extractant ratio of 1:10 (w/v) for 24 h in a horizontal shaker (a rotational speed of 200 rpm) at 20°C.…”

Section: Methodsmentioning

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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“…The peaks from 1400 cm -1 to 1000 cm -1 are probably due to C-O stretching and -CH 3 deformation vibartions. According to authors [19,20,21,22] the complex heterogeneous nature of FA samples give rise to rather broad peaks observed [19,20,21,22], what exactly the same has been observed in analysis of the primary effluent.…”

Section: Resultsmentioning

confidence: 79%

“…The IR absorption spectra of FA were conducted to analyse their structure. The analysis was performed based on the work [19,20,21,22]. A spectral range was characteristic for this kind of substances: 650 -4000 cm -1 .…”

Section: Resultsmentioning

confidence: 99%

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The content of fulvic acids in the primary effluent at the Płaszów WWTP in Kraków

Łomińska

Anielak

2017

E3S Web Conf.

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Abstract. Municipal wastewater contains significant amounts of organic substances of both natural and anthropogenic origin. Wastewater treatment removes most of contaminants, however new substances are formed as a result of biochemical changes taking part during the treatment process; some of them remain in the final effluent and may pose a threat to life and health of living organisms. Humic substances (HS), which include soluble fulvic acids (FA) are contaminants commonly found in wastewater. This is why the research attempted to examine the content of fulvic acids in mechanically treated wastewater at the Płaszów Wastewater Treatment Plant (WWTP) in Kraków. The study was conducted to assess the quantities of the pollution load coming to the plant. FA were separated (isolated) at a hydrophobic ion exchanger, and then subjected to qualitative analysis to determine their elemental composition and degree of contamination with metals and other substances. Studies were also conducted in the infrared spectrum to determine the effects of internal structure of fulvic acids. Humic acids (HA) are precursors of chloroorganic compounds and other carcinogenic, mutagenic and teratogenic substances in oxidation and disinfection processes. Therefore the problem of FA in the final effluent is important, because of their amount and location of a wastewater discharge point.

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Humic substances and distribution in Mollisols affected by six‐year organic amendments

et al. 2020

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Organic amendments under crop rotation influence soil organic matter (SOM) content, while the distribution and structural changes of humic substances have not been thoroughly examined. Three-dimensional excitation-emission matrix (3DEEM) fluorescence spectroscopy with parallel factor analysis (PARAFAC) and fluorescence regional integration (FRI), and projection procedure regression (PPR) were used to comprehensively evaluate the structural characteristics and distribution of fulvic acids (FA). The fertilization regimes were: CNoF-SNoF (corn and soybean without fertilizer), CCF-SNoF (corn with chemical fertilizer and soybean without fertilizer), CCR-SNoF (corn and soybean stovers with chemical fertilizer and soybean without fertilizer), CCF-SCF (corn and soybean with chemical fertilizer), and CCF-SFM (corn with chemical fertilizer and soybean with dairy manure). Six-year organic amendments mainly increased SOM, FA and humic acids (HA) contents, and the ratio of HA to FA (HA/FA), the ratio of percent fluorescence response in the ultraviolet to visible region (P V,n /P III,n) and projection values in topsoil. Six-year stover return enhanced labile fractions of SOM in 20-30 cm soil depth, while dairy manure application increased labile fractions of SOM in 0-10 cm and 20-30 cm soil depths. The organic amendments had higher Fmax of component C1 (bioavailable aliphatic compounds) and component C2 (high molecular structure

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Spectroscopic characterization of water extractable organic matter during composting of municipal solid waste

Cited by 249 publications

References 37 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

The content of fulvic acids in the primary effluent at the Płaszów WWTP in Kraków

Humic substances and distribution in Mollisols affected by six‐year organic amendments

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