Improvement criteria for different advanced technologies towards bio-stabilized leachate based on molecular subcategories of DOM

He, Pinjing; Liu, Wanying; Qiu, Junjie; Zhang, Hua; Huang, Yulong; Deng, Yingtao; Shao, Liming; Lü, Fan

doi:10.1016/j.jhazmat.2021.125463

Cited by 22 publications

(4 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the basis of the identified formulas, DOM molecules were presented in van Krevelen (VK) diagrams where each formula was plotted according to its H/C ratio versus O/C ratio. In addition, molecules in VK diagrams were classified into eight subcategories based on previous studies. ,, The boundaries of the aforementioned subcategories are detailed in Table S5.…”

Section: Methodsmentioning

confidence: 99%

“…In addition, molecules in VK diagrams were classified into eight subcategories based on previous studies. 12,14,19 The boundaries of the aforementioned subcategories are detailed in Table S5. Molecular indices, including H/C ratio, O/C ratio, molecular weight (MW), modified aromaticity index (AI mod ), double bond equivalence (DBE), and nominal oxidation state of carbon (NOSC) for each formula, were calculated using equations (Table S6) modified from Kellerman et al, 20 and the bulk indices of each sample were expressed as weighted averages of the peak areas.…”

Section: Molecular Information Acquisitionmentioning

confidence: 99%

“…A recent spotlighted nontarget analysis using high-resolution mass spectrometry, which matches the exact molecular formulas of the hundreds or thousands of peaks identified, is expected to provide insights into the behavior of dissolved organic matter (DOM). The method has recently been used extensively to identify molecular properties of DOM in various natural water bodies or wastewater and to elucidate the molecular conversion patterns in different wastewater-treatment processes. − In addition, attempts to interpret DOM chemodiversity in mature digestates from full-scale anaerobic digesters have been reported, , but studies regarding the molecular characterization of fresh digestates are few.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Molecular Behavior of Dissolved Organic Matter in Liquid Digestate from Biogenic Waste during Electrodialysis Treatment: Reserve, Transfer, or Foul the Membrane?

Wang

Huang

et al. 2022

ACS EST Water

Self Cite

View full text Add to dashboard Cite

Effective management and beneficial utilization of liquid digestate is becoming a bottleneck of anaerobic digestion. Electrodialysis exhibits considerable potential in liquid digestate valorization; however, the process is typically challenged by severe membrane fouling due to high organic matter content. In the present study, a bench-scale electrodialysis was carried out to treat fresh and mature digestate with an aim of investigating the behavior of dissolved organic matter (DOM) during electrodialysis using ultrahigh-resolution mass spectrometry. Organics that were easily transported across the ion-exchange membrane (IEM) had relatively high O/C ratios (0.208−0.414) contributed from carboxyls, as well as relatively low H/C ratios (1.15−1.55) and high aromatic indexes (0.257−0.504) contributed from the benzene rings. Chemical cleaning with HCl and NaOH exhibited a cleaning effect on 66%−69% richness of DOM and completely removed 33%−38% richness of foulants via deprotonation or protonation effects, whereas 36%−45% richness of DOM, which had significantly higher aromatic indices, could not be completely removed by chemical cleaning due to their high hydrophobic affinity for the polymer matrix of IEM. The speculated fouling mechanisms included electrostatic interactions, hydrophobic interactions, hydrogen bonding, and geometrical exclusion. The results of the present study could enhance our understanding of DOM behavior during electrodialysis at the molecular level and, in turn, provide insights into the mitigation and prevention of membrane fouling in electrodialysis for the treatment of other organic-rich wastewaters.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Molecular Information Acquisitionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Molecular Behavior of Dissolved Organic Matter in Liquid Digestate from Biogenic Waste during Electrodialysis Treatment: Reserve, Transfer, or Foul the Membrane?

Wang

Huang

et al. 2022

ACS EST Water

Self Cite

View full text Add to dashboard Cite

show abstract

“…For instance, the coagulation−sediment process as a cheap and common pretreatment can remove nearly 50% of di(2-ethylhexyl) phthalate and halve the k. To the best of our knowledge, membrane separation and Fenton reaction will indiscriminately remove the various types of dissolved organic matter. 27 In addition, the two technologies may be too expensive to make the co-treatment economically feasible. With respect to the authorities, β directly reflects the effect on the influent after injection.…”

Section: Implications On Co-treatment By Amplification Ratio K Imentioning

confidence: 99%

Emerging Contaminants: Are They a Big Concern for Leachate Co-treatment in Municipal Wastewater Treatment Plants?

et al. 2022

Self Cite

View full text Add to dashboard Cite

Characterization and differentiation of dissolved organic matter in leachate derived from an old Japanese landfill site through Orbitrap mass spectrometry

Nguyen,

Kusakabe,

Takaoka

2024

J Mater Cycles Waste Manag

View full text Add to dashboard Cite

Elucidating the characteristics of dissolved organic matter (DOM) is crucial to assessing its impact on the bioavailability and mobility of pollutants in landfill leachate. This study reports a comprehensive 5–month investigation into the characteristics of DOM in leachate from an old Japanese landfill, collected at six different sampling points. The molecular composition, chemical properties, and structural characteristics of DOM were assessed using Orbitrap mass spectrometry and spectral analysis. The leachate DOM mainly consisted of CHO-containing molecules (58.5–88.9%), low-oxygen unsaturated phenolic compounds (40.5–54.0%), and aliphatic compounds (19.4–47.3%), with slight variation among sampling points. A significant portion of the nominal oxidation state of carbon was in the reduced zone (76.2–95.4%). The results underscore the distinct molecular composition of DOM in mature Japanese landfill leachate compared to young and mature leachates from other countries. Two of six sampling points, with notable differences in molecular characteristics, were compared and elucidated. The composition of landfill waste, rather than landfill age, was the main factor affecting the characteristics and differentiation of leachate DOM.

show abstract

Improvement criteria for different advanced technologies towards bio-stabilized leachate based on molecular subcategories of DOM

Cited by 22 publications

References 51 publications

Molecular Behavior of Dissolved Organic Matter in Liquid Digestate from Biogenic Waste during Electrodialysis Treatment: Reserve, Transfer, or Foul the Membrane?

Molecular Behavior of Dissolved Organic Matter in Liquid Digestate from Biogenic Waste during Electrodialysis Treatment: Reserve, Transfer, or Foul the Membrane?

Emerging Contaminants: Are They a Big Concern for Leachate Co-treatment in Municipal Wastewater Treatment Plants?

Characterization and differentiation of dissolved organic matter in leachate derived from an old Japanese landfill site through Orbitrap mass spectrometry

Contact Info

Product

Resources

About