scholarly journals Research on Fluorescence Spectroscopy Characteristics of Dissolved Organic Matter of Landfill Leachate in the Rear Part of Three Gorges Reservoir

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Zhigang Xie ◽  
Wei Guan
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Aromatic Ring ◽  
Landfill Leachate ◽  
Fulvic Acids ◽  
Ring Structure ◽  
Structure Characteristic ◽  
Three Gorges ◽  
Protein Waste ◽  
Aromatic Ring Structure

Three-dimensional fluorescence and infrared spectroscopy analysis of the leachate dissolved organic matter (DOM) of the Three Gorges was reported in spring, summer, and autumn seasons, respectively. Studies show that, that organic matter of landfill leachate in Yongchuan, Dazu and Jiangjin is the class of　fulvic-like acid and protein-like fluorescence. The study also found that the longer the time of the pile of garbage, the lower the content of class of protein-like concentration, and the higher the concentration of fulvic-like acid, indicating that the protein waste material in the humification process is easy degradation. However, the same source of DOM is similar in the functional group composition and molecular structure. Characteristic frequency area analysis showed that humic acids (HA), and fulvic acids (FA) contain more than hydrophilic organic matter (HyI) aromatic ring structure, and FA aromatic ring structure is the most. Because of Chung-amide NH deformation vibration, there are strong absorption peaks in the 1562~1572 cm−1for various components; HyI contains many organic nitrogen compounds and fatty acids.

scholarly journals Dissolved organic matter and estrogenic potential of landfill leachate

Chemosphere ◽  
2008 ◽  
Vol 72 (9) ◽  
pp. 1381-1386 ◽  
Author(s):  
Fan Lü ◽  
Hua Zhang ◽  
Cheng-Hsuan Chang ◽  
Duu-Jong Lee ◽  
Pin-Jing He ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Landfill Leachate ◽  
Estrogenic Potential

scholarly journals Landfill Leachate Degradation by TiO2-Immobilized White Cement

Molekul ◽  
2018 ◽  
Vol 13 (1) ◽  
pp. 18
Author(s):  
Ni Wayan Yuningrat ◽  
I Putu Parwata ◽  
Putu Frisca Dora Jastrissia ◽  
Made Vivi Oviantari ◽  
I Wayan Mudianta
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Landfill Leachate ◽  
Crystal Size ◽  
Reaction Times ◽  
White Cement ◽  
Before And After

This report presented the characterisation of white cement and TiO2-immobilised white cement prior and after photodegradation treatment. The study was also aimed at measuring the effectiveness of catalyst that was used during the photodegradation at various different reaction times. The characteristic of the white cement was evaluated by XRD, meanwhile the effectiveness of the catalyst was inferred from COD values. The results indicated that the white cement formed crystals with highest peak at 2ϴ 29.7990° and crystal size of 0.63140 nm. In addition, the highest peak of the TiO2-immobilized white cement before and after photodegradation was 2ϴ 29.4634° (crystal size 0.79209 nm) and 29.4735° (crystal size 0.64061 nm) respectively. Moreover, dissolved organic matter in landfill leachate reduced during the seven-hour photodegradation experiment as indicated by the decrease of 71.43% of the COD values.

scholarly journals Characterization of Dissolved Organic Matter in Landfill Leachate during Two–Stage Membrane Bioreactor Treatment

2017 ◽  
Vol 15 (1) ◽  
Author(s):  
S. Sanguanpak ◽  
C. Chiemchaisri ◽  
W. Chiemchaisri ◽  
K. Yamamoto
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Landfill Leachate ◽  
Membrane Bioreactor ◽  
Disposal Site ◽  
Solid Waste Disposal ◽  
High Concentration ◽  
Absorption Bands ◽  
Two Stage

Landfill leachate is a complex wastewater containing high concentration of dissolved organic matter (DOM). In this study, DOM in raw leachate and treated water from pilot–scale two–stage membrane bioreactor (MBR) installed at solid waste disposal site were investigated by using fractionation method, fluorescence excitation–emission matrix spectroscopy (FEEM) and fourier transform infrared (FTIR). The fractionation results showed hydrophilic (Hyl) compound was the most abundant fraction in DOM of raw leachate, whereas the dominant fraction of DOM in mixed liquor inside MBR and its effluent was fulvic acid (FA). The fluorescent peaks of protein-like, humic and fulvic–like substances were detected in influent DOM, while the fluorescence peaks of MBR and effluent DOM were humic and fulvic-like substances. From the FTIR results, absorption bands that could be related to humic acid (HA) and FA were found in both MBR and effluent DOM. The characterization of DOM indicated that the most of Hyl and protein–like substances could be significantly removed by microbial process in MBR. Furthermore, a part of humic substance (HA and FA) could be eliminated by microbial and filtration processes.

scholarly journals Aromatic Ring Structure in Solvent Extracts of Binder Pitches

1974 ◽  
Vol 53 (3) ◽  
pp. 171-179
Author(s):  
Kenji Fukuda ◽  
Kenji Inokuchi ◽  
Yasuhiro Yamada ◽  
Hidemasa Honda
Keyword(s):  
Aromatic Ring ◽  
Ring Structure ◽  
Aromatic Ring Structure
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