Experimental and modeling approach to study sorption of dissolved hydrophobic organic contaminants to microbial biofilms

Simple item page
dc.contributor.authorWicke, D.
dc.contributor.authorBoeckelmann, U.
dc.contributor.authorReemtsma, T.
dc.date.accessioned2010-09-28T00:26:03Z
dc.date.available2010-09-28T00:26:03Z
dc.date.issued2007en
dc.description.abstractA biofilm reactor was developed to investigate the sorption of polycyclic aromatic hydrocarbons (PAH) as model compounds for hydrophobic organic contaminants (HOC) to intact microbial biofilms at environmentally realistic concentrations. When operated as a differential column batch reactor, the system can be used to study the thermodynamics as well as the kinetics of the exchange of HOC between an aqueous phase and microbial biofilms. Organic carbon normalized partition coefficients (Koc) for phenanthrene, fluoranthene and pyrene were at the lower end of those known for other organic sorbents. Intra-biofilm diffusion coefficients (D) were calculated from decrease in solute concentration over time using a model for diffusion through a plane sheet and ranged from 0.23 to 0.45Ɨ10āˆ’9 cm2 sāˆ’1 for the three PAH. These diffusion coefficients are about four orders of magnitude lower than those reported in literature for free aqueous solution. These data and the experimental approach presented here are useful to assess the importance of microbial biofilms for exchange processes of HOC in heterogeneous systems such as water distribution systems, membranes and aquifers, sewer systems or surface soils.en
dc.identifier.citationWicke, D., Boeckelmann, U., Reemtsma, T. (2007) Experimental and modeling approach to study sorption of dissolved hydrophobic organic contaminants to microbial biofilms. Water Research, 41(10), pp. 2202-2210.en
dc.identifier.doihttps://doi.org/10.1016/j.watres.2007.01.039
dc.identifier.issn0043-1354
dc.identifier.urihttp://hdl.handle.net/10092/4548
dc.language.isoen
dc.publisherUniversity of Canterbury. Civil and Natural Resources Engineeringen
dc.rights.urihttps://hdl.handle.net/10092/17651en
dc.subjectPAHen
dc.subjectsorptionen
dc.subjectdiffusionen
dc.subjectbiofilmen
dc.subjectbacteriaen
dc.subjectphenanthreneen
dc.subjectfluorantheneen
dc.subjectpyreneen
dc.subject.anzsrcField of Research::06 - Biological Sciences::0605 - Microbiologyen
dc.subject.anzsrcField of Research::09 - Engineering::0905 - Civil Engineering::090508 - Water Quality Engineeringen
dc.titleExperimental and modeling approach to study sorption of dissolved hydrophobic organic contaminants to microbial biofilmsen
dc.typeJournal Article
Files
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
12622592_Water Res(41)_2202 uncorrected proof.pdf
Size:
627.11 KB
Format:
Adobe Portable Document Format
Download
Collections
Engineering: Journal Articles