Citation: YANG Chao, HE Xiao-Song, XI Bei-Dou, HUANG Cai-Hong, CUI Dong-Yu, GAO Ru-Tai, TAN Wen-Bing, ZHANG Hui. Characteristic Study of Dissolved Organic Matter for Electron Transfer Capacity During Initial Landfill Stage[J]. Chinese Journal of Analytical Chemistry, ;2016, 44(10): 1568-1574. doi: 10.11895/j.issn.0253-3820.160254 shu

Characteristic Study of Dissolved Organic Matter for Electron Transfer Capacity During Initial Landfill Stage

YANG Chao ^1,2,3, ,
HE Xiao-Song ^1,2 ,
XI Bei-Dou ^1,2,3 ,
HUANG Cai-Hong ^1,2 ,
CUI Dong-Yu ^1,2 ,
GAO Ru-Tai ^1,2 ,
TAN Wen-Bing ^1,2 ,
ZHANG Hui ^1,2

1.
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
2.
State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Science, Beijing 100012, China;
3.
School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

Received Date: 4 April 2016
Revised Date: 8 July 2016

Fund Project: The work was supported by the National Natural Science Foundation of China (No.51408573)

Figures(5)

To investigate the evolution law and influenced factors of dissolved organic matter for electron transfer capacity during initial landfill stage, dissolved organic matter (DOM) was extracted from landfill wastes at different depth. Shewanella oneidensis MR-1 and citrate iron (FeCit) were respectively used as electron donor and electron acceptor to measure electron donating capacity, electron accepting capacity and electron shuttling capacity. Afterwards, the influenced factors of electron transfer capacity were studied by analyzing spectral information. The results showed that protein-like components and humic-like components were able to transfer electrons, and they also accepted electrons from microorganisms. Electron donating capacity and electron accepting capacity increased firstly and then decreased. However, the electron shuttling capacity increased persistently during the landfill process. Protein-like components were the main components of dissolved organic matter during the initial landfill stage, and it was mainly responsible for the electron donoring capacity and electron accepting capacity of DOM. Electron shuttling capacity resulted from humic-like components during the cyclic redox process. Electron shuttling capacity persistently increased during the landfill process based on humic-like components generated during the stage.
- Dissolved organic matter,
- Reduction capacity,
- Electron shuttling capacity,
- Three-dimensional fluorescence spectrum
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