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conferenceseries
.com
Volume 8, Issue 9 (Suppl)
J AIDS Clin Res
ISSN: 2155-6113 JAR, an open access journal
STD Asia Pacific 2017
October 23-25, 2017
OCTOBER 23-25, 2017 OSAKA, JAPAN
7
TH
ASIA PACIFIC
STD and Infectious Diseases Congress
Evaluation of diallyl phthalate biodegradation mechanisms in the treatment of synthetic wastewater
Mitra Gholami
1
, Ehsan Ahmadi
2
, Mahdi Farzadkia
1
and Ramin Nabizadeh
1
1
Iran University of Medical Sciences, Iran
2
Tehran University of Medical Sciences, Iran
P
hthalic acid esters including Diallyl Phthalate (DAP) which commonly named as phthalates are considered as top priority
and hazardous pollutants and have been received significant concerned over the last decades. In this study, performance
of Moving Bed Biofilm Reactor (MBBR) for biological removal of DAP from synthetic wastewater was evaluated. The effects
of different operation conditions including: Hydraulic retention time, DAP loading rate and aeration rate on process were
investigated. In optimum conditions, 93.85% removal efficiency were achieved for DAP. Moreover, MBBR achieved to remove
about 92.44% of COD. The results showed that DAP had a high biodegradation, according to the selected parameters such
as half saturation constant, overall reaction rate and maximum specific growth rate. The Stover-Kincannon and second order
(Grau) models were found as the best models for designing and predicting MBBR performance due to their high co-efficient
of determination which were 0.98 and 0.99, respectively. The main metabolites were phthalic acid and catechol which can
demonstrate that side ester chains (de-esterification) detachment is the main microbial degradation pathway. Finally, the
remained benzene ring was broken to 2-hydroxy muconic semi-aldehyde. According to the bio-degradation pathway and
metabolites produced, MBBR process can be considered as a reliable way for treating DAP wastewater.
gholamimitra32@gmail.comJ AIDS Clin Res 2017, 8:9 (Suppl)
DOI: 10.4172/2155-6113-C1-021