Comparison on the removal of phthalic acid diesters in a bioreactor landfill and a conventional landfill |
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| Authors: | Cheng-ran Fang Yu-yang Long Dong-sheng Shen |
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| Institution: | aDepartment of Environmental Engineering, Zhejiang University, Hangzhou 310029, China;bSchool of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou 310023, China;cDepartment of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China;dCollege of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China |
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| Abstract: | The removal of phthalic acid diesters (PAEs) in municipal solid waste (MSW) from two simulated landfill reactors was compared. The results showed that the original concentrations of dimethyl phthalate (DMP), dibutyl phthalate (DBP) and dioctyl phthalate (DOP) in the refuse were 3.3 μg g−1, 18.5 μg g−1 and 0.8 μg g−1, respectively. The concentrations of DMP and DBP in both leachate and refuse decreased greatly during decomposition of the waste in both reactors. The major loss of PAEs from the landfill occurred during an active methanogenic environment with a low concentration of volatile fatty acids (VFA) in the later period. In addition, strong correlations were found between the residual DMP, DBP concentrations and the biologically degradable material (BDM) of the refuse. Finally, PAEs degraded more rapidly in the landfill that was operated in conjunction with the methanogenic reactor when compared to the landfill with direct leachate discharge. |
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| Keywords: | Phthalic acid diesters Landfill bioreactor Biologically degradable material Leachate recirculation |
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