Journal ArticleDOI
Molecular Insights into the Transformation of Dissolved Organic Matter in Landfill Leachate Concentrate during Biodegradation and Coagulation Processes Using ESI FT-ICR MS.
Ziwen Yuan,Chen He,Quan Shi,Chunming Xu,Zhenshan Li,Zhenshan Li,Chengzhai Wang,Chengzhai Wang,Hua-Zhang Zhao,Hua-Zhang Zhao,Jinren Ni,Jinren Ni +11 more
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TLDR
Molecular compositions of dissolved organic matter (DOM) in leachate concentrate, as well as changes after anaerobic/aerobic biodegradation and coagulation with salts, were characterized using electrospray ionization (ESI) coupled with Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS).Abstract:
Landfill leachate concentrate is a type of refractory organic wastewater with high environmental risk. Identification of refractory components and insights into the molecular transformations of the organics are essential for the development of efficient treatment process. In this report, molecular compositions of dissolved organic matter (DOM) in leachate concentrate, as well as changes after anaerobic/aerobic biodegradation and coagulation with salts, were characterized using electrospray ionization (ESI) coupled with Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). DOM in leachate concentrate were more saturated and less oxidized with more nitrogen and sulfur-containing substances (accounting for 50.0%), comparing with natural organic matter in Suwannee River. Selectivity for different classes of organics during biodegradation and coagulation processes was observed. Substances with low oxidation degree (O/C < 0.3) were more reactive during biodegradation process, leading to the f...read more
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Journal ArticleDOI
Transformation of dissolved organic matter during full-scale treatment of integrated chemical wastewater: Molecular composition correlated with spectral indexes and acute toxicity.
TL;DR: Electrospray ionization coupled with Fourier transform ion cyclotron resonance mass spectrometry was used to characterize the molecular transformation of DOM during full-scale treatment of integrated chemical wastewater in a centralized wastewater treatment plant (CWWTP), suggesting that polyphenols and highly unsaturated phenols were positively correlated with the specific UV absorbance at 254 nm.
Journal ArticleDOI
Characterization and treatment of landfill leachate: A review.
TL;DR: In this article, the up-to-date spectroscopic techniques for landfill leachate characterization and advanced oxidation treatment are highlighted, along with the future perspectives in the development of characterization and treatment approaches.
Journal ArticleDOI
In-House Standard Method for Molecular Characterization of Dissolved Organic Matter by FT-ICR Mass Spectrometry.
TL;DR: An in-house standard method for molecular characterization of DOM by ESI FT-ICR MS is developed and validated and successfully used for the characterization of more than 4000 DOM samples, which is transferable to other laboratories.
Journal ArticleDOI
Molecular Characterization of Cloud Water Samples Collected at the Puy de Dôme (France) by Fourier Transform Ion Cyclotron Resonance Mass Spectrometry
Angelica Bianco,Laurent Deguillaume,Mickaël Vaitilingom,Edith Nicol,Jean-Luc Baray,Nadine Chaumerliac,Maxime Bridoux +6 more
TL;DR: Comparison of the results with previously published data sets on atmospheric aqueous media indicated that the average O/C ratios reported in this work are similar to those reported for fog water and for biogenic aerosols but are lower than the values measured for aerosol sampled in the atmosphere and for aerosols produced artificially in environmental chambers.
Journal ArticleDOI
Application of membrane separation technology in the treatment of leachate in China: A review.
TL;DR: In this paper, the performance of nearly 200 waste management enterprises of different sizes in China were analyzed, with an emphasis on their scale, regional features, processes, and economic characteristics, and it was found that membrane separation technologies, mainly nanofiltration (NF), reverse osmosis (RO), and NF+RO, have been used in China since 2004.
References
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Journal ArticleDOI
Molecular Structure in Soil Humic Substances: The New View
Rebecca Sutton,Garrison Sposito +1 more
TL;DR: A critical examination of published data obtained primarily from recent nuclear magnetic resonance spectroscopy, X-ray absorption near-edge structure spectroscopic, electrospray ionization-mass spectrometry, and pyrolysis studies reveals an evolving new view of the molecular structure of soil humic substances.
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Graphical method for analysis of ultrahigh-resolution broadband mass spectra of natural organic matter, the van Krevelen diagram.
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Journal Article
Graphical-statistical method for the study of structure and reaction processes of coal
Journal ArticleDOI
Characterization of a major refractory component of marine dissolved organic matter
Norbert Hertkorn,Ronald Benner,Moritz Frommberger,Philippe Schmitt-Kopplin,Matthias Witt,Karl Kaiser,Antonius Kettrup,John I. Hedges +7 more
TL;DR: Refractory carboxyl-rich alicyclic molecules (CRAM) are characterized in marine dissolved organic matter (DOM) using nuclear magnetic resonance spectroscopy and ultra-high resolution mass spectrometry as discussed by the authors.
Journal ArticleDOI
Physico-chemical treatments for removal of recalcitrant contaminants from landfill leachate.
TL;DR: None of the individual physico-chemical techniques is universally applicable or highly effective for the removal of recalcitrant compounds from stabilized leachate, but adsorption, membrane filtration and chemical precipitation are the most frequently applied and studied worldwide.
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