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Degradation of phenolics, nitrogen-heterocyclics and polynuclear aromatic hydrocarbons in a rotating biological contactor

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Title Degradation of phenolics, nitrogen-heterocyclics and polynuclear aromatic hydrocarbons in a rotating biological contactor
 
Creator JESWANI, H
MUKHERJI, S
 
Subject Biomass gasification
Exiguobacterium aurantiacum
Biofilm
Clark's model
Abiotic loss
WASTE-WATER
BIOMASS GASIFICATION
EXIGUOBACTERIUM-AURANTIACUM
OIL-FIELD
BIODEGRADATION
REMOVAL
BIOREMEDIATION
ELIMINATION
PERFORMANCE
SEDIMENT
 
Description The degradation of phenolics, heterocyclics and polynuclear aromatic hydrocarbons (PAHs) in a synthetic biomass gasifier wastewater with average COD of 1388 mg/L was studied in a three stage rotating biological contactor (RBC) using the pyrene degrader, Exiguobacterium aurantiacum and activated sludge consortia (1:3 v/v). As the organic loading rate (OLR) was varied from 3.3 to 14 g/m(2)/d, the COD removal ranged from 63.3% to 92.6%. Complete removal of all the constituents was observed at the lowest OLR of 3.3 g/m(2)/d. At 24 h hydraulic retention time (HRT) and OLR of 6.6 g/m(2)/d complete removal of pyridine, quinoline and benzene and 85-96% removal of phenol, naphthalene, phenanthrene, fluoranthene and pyrene was observed. E. aurantiacum was found to be the dominant bacteria in the biofilm. Clark's model provided good fits to data for all the three stages of the RBC. (C) 2012 Elsevier Ltd. All rights reserved.
 
Publisher ELSEVIER SCI LTD
 
Date 2014-10-16T12:35:06Z
2014-10-16T12:35:06Z
2012
 
Type Article
 
Identifier BIORESOURCE TECHNOLOGY, 11112-20
http://dx.doi.org/10.1016/j.biortech.2012.01.157
http://dspace.library.iitb.ac.in/jspui/handle/100/15560
 
Language en