Study of moving bed biofilm reactor in diethyl phthalate and diallyl phthalate removal from synthetic wastewater.
Phthalic acid esters have received significant attention over the last few years since they are considered as priority pollutants. In this study, effects of different operation conditions including hydraulic retention time, phthalates loading rates and aeration rate on process performance of moving bed biofilm reactor (MBBR) for removing diethyl phthalate (DEP) and diallyl phthalate (DAP) from synthetic wastewater was evaluated. In optimum conditions, 94.96% and 93.85% removal efficiency were achieved for DEP and DAP, respectively. Moreover, MBBR achieved to remove more than 92% of COD for both phthalates. The results showed that DEP had a higher biodegradation rate compared to DAP, according to the selected parameters such as half saturation constant, overall reaction rate and maximum specific growth rate. The Grau second order model found as the best model for predicting MBBR performance due to its high correlation coefficients and more conformity of its kinetic coefficients to the results.
Center for Water Quality Research (CWQR), Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran; Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
Ehsan
E
Ahmadi
Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran. Electronic address: gholamim@iums.ac.ir.
Mitra
M
Gholami
Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
Mahdi
M
Farzadkia
Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
Ramin
R
Nabizadeh
Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
Ali
A
Azari
D000332:Aerobiosis; D001673:Biodegradation, Environmental; D018441:Biofilms; D019149:Bioreactors; D007700:Kinetics; D008962:Models, Theoretical; D010795:Phthalic Acids / Q000302:isolation & purification*; D013997:Time Factors; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000295:instrumentation*
D010795:Phthalic Acids; D062065:Wastewater; D014874:Water Pollutants, Chemical; C049098:diallyl phthalate; C007379:diethyl phthalate
Diallyl phthalate; Diethyl phthalate; Kinetic; Moving bed biofilm reactor; Wastewater