Removal of Pyrene and Benzo(a)Pyrene from Contaminated Water by Sequential and Simultaneous Ozonation and Biotreatment

From: Water Environment Research | Date: October 1, 2006| Author: | Copyright information

ABSTRACT:

The removal of pyrene and benzo(a)pyrene from contaminated water by sequential and simultaneous ozonation-bioremediation techniques was investigated. During the sequential treatment, ozonation using 0.5 or 2.5 mg/L ozone was used as a pretreatment process, whereas, during the simultaneous treatment process, ozonation of hydrocarboncontaminated water at a predetermined duration using 0.5 mg/L ozone was made in the presence of microbial biomass. Ozonation was not beneficial for the removal of pyrene. However, despite a decreased specific biodegradation rate, ozonation improved the ...

Read all of this article with a FREE trial to HighBeam Research

Related newspaper, magazine, and trade journal articles from HighBeam Research

(Including press releases, facts, information, and biographies)

Milk and Urine Excretion of Polycyclic Aromatic Hydrocarbons and Their Hydroxylated Metabolites After a Single Oral Administration in Ruminants
; ...study was to establish the transfer of phenanthrene, pyrene, and benzo[a]pyrene and their major hydroxylated metabolites to milk...identification of the analytes (native compounds, 1-OH pyrene, 3-OH phenanthrene, 3-OH benzo[a] pyrene) were achieved...
The electronic structure of carcinogenic dibenzopyrenes: Linear dichroism, fluorescence polarization spectroscopy and quantum mechanical calculations
; ...together with the frequently studied benzo[a]pyrene. A detailed study of the electronic structure...one of the three compounds, dibenzo[a,i]pyrene, was performed several years ago. Here...the two remaining compounds, dibenzo[a,h]pyrene and dibenzo[a,e]pyrene. The studies include...
Phytoremediation of pyrene in a Cecil soil under field conditions
; ...phosphorus (P) availability on the dissipation of pyrene added at a concentration of approximately 600...prevent flooding of plots and raindrop dispersion of pyrene. Treatment factors were pyrene, vegetation, and available P levels. Each of the...
Two is better than one: using UV in pre-treatment for removal of organics in industrial effluents.
; ...in a two-stage process including biological degradation for the destruction of organic...not that UV exposure enhances the biological degradation of the target organic contaminant...single-stage UV degradation, single-stage biological degradation, and two-stage UV-biological ...
Two is Better than One
; ...in a two-stage process including biological degradation for the destruction of organic...not that UV exposure enhances the biological degradation of the target organic contaminant...single-stage UV degradation, single-stage biological degradation, and two-stage UV-biological ...
^sup 2^H-NMR Study and Molecular Dynamics Simulation of the Location, Alignment, and Mobility of Pyrene in POPC Bilayers
; ABSTRACT The alignment of pyrene in a 1-palmitoyl-2-oleoyl-phosphatidylcholine...from ^sup 2^H-NMR spectra of deuterated pyrene-d^sub 10^ in an oriented lipid bilayer...possible. From simulations, we saw that pyrene prefers a position inside the lipid...
A polarity-sensitive fluorescence study of the pH-dependent aggregation of poly(methacrylic acid-g-ethylene glycol) copolymers in water
; The polarity-sensitive fluorescence of pyrene was used to investigate the complex-induced...function of concentration of solubilized pyrene was used to estimate the critical aggregate...the polarity-sensitive fluorescence of pyrene. As explained previously (1), for methacrylic...
Bacterial Community Evaluation During Establishment of Tall Fescue (Festuca arundinacea) in Soil Contaminated with Pyrene
; ...growth during the phytoremediation of pyrene. Soil microbial communities in both bulk...PCR-DGGE). However, no correlation between pyrene concentration and bacterial community...Even though plants significantly enhanced pyrene degradation (undetectable after 91 d for...
Biodegradation of Pyrene in Marine Beach Sediments
; ...recalcitrant polycyclic aromatic hydrocarbon (PAH) pyrene in marine beach sediments was investigated using...Both additives were comparable in stimulating pyrene biodegradation rates; with chitosan (0.062 day...amendment than Osmocote (0.051 day^sup -1^). Loss of pyrene in a control sediment (i.e., ...
Pyrene and phenanthrene influence on soil microbial populations
; ...freshly exposed to (1) 0 or 2000 mg pyrene/kg and sampled after 10- and 6 1-wk incubation and (2) 0 or 505 mg pyrene + 445 mg phenanthrene/kg and sampled...methyl ester analysis (FAME). In the pyrene experiment, pyrene did not affect total...