Comparison on the removal of phthalic acid diesters in a bioreactor landfill and a conventional landfill.
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 microg g(-1), 18.5 microg g(-1) and 0.8 microg 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.
Fang
Cheng-ran
CR
Department of Environmental Engineering, Zhejiang University, Hangzhou 310029, China.
Long
Yu-yang
YY
Shen
Dong-sheng
DS
D001673:Biodegradation, Environmental; D019149:Bioreactors; D001709:Biotechnology / Q000379:methods*; D002244:Carbon / Q000737:chemistry; D003993:Dibutyl Phthalate / Q000302:isolation & purification; D004051:Diethylhexyl Phthalate / Q000302:isolation & purification; D004867:Equipment Design; D004952:Esters / Q000737:chemistry / Q000302:isolation & purification*; D005232:Fatty Acids, Volatile / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D008697:Methane / Q000737:chemistry; D008829:Microbiology; D010795:Phthalic Acids / Q000737:chemistry / Q000302:isolation & purification*; D012037:Refuse Disposal / Q000379:methods
D004952:Esters; D005232:Fatty Acids, Volatile; D010795:Phthalic Acids; C024629:dimethyl phthalate; D003993:Dibutyl Phthalate; D002244:Carbon; D004051:Diethylhexyl Phthalate; D008697:Methane