Sorption and biodegradation of organic micropollutants during river bank filtration: A laboratory column study

Bertelkamp C., Reungoat J., Cornelissen E.R., Singhal N., Reynisson J., Cabo A.J., van der Hoek J.P. and Verliefde A.R.D. (2014) Sorption and biodegradation of organic micropollutants during river bank filtration: A laboratory column study. Water Research, 52 231-241. doi:10.1016/j.watres.2013.10.068


Author Bertelkamp C.
Reungoat J.
Cornelissen E.R.
Singhal N.
Reynisson J.
Cabo A.J.
van der Hoek J.P.
Verliefde A.R.D.
Title Sorption and biodegradation of organic micropollutants during river bank filtration: A laboratory column study
Journal name Water Research   Check publisher's open access policy
ISSN 0043-1354
1879-2448
Publication date 2014-04
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.watres.2013.10.068
Open Access Status
Volume 52
Start page 231
End page 241
Total pages 11
Place of publication London, United Kingdom
Publisher I W A Publishing
Collection year 2014
Language eng
Abstract This study investigated sorption and biodegradation behaviour of 14 organic micropollutants (OMP) in soil columns representative of the first metre (oxic conditions) of the river bank filtration (RBF) process. Breakthrough curves were modelled to differentiate between OMP sorption and biodegradation. The main objective of this study was to investigate if the OMP biodegradation rate could be related to the physico-chemical properties (charge, hydrophobicity and molecular weight) or functional groups of the OMPs. Although trends were observed between charge or hydrophobicity and the biodegradation rate for charged compounds, a statistically significant linear relationship for the complete OMP mixture could not be obtained using these physico-chemical properties. However, a statistically significant relationship was obtained between biological degradation rates and the OMP functional groups. The presence of ethers and carbonyl groups will increase biodegradability, while the presence of amines, ring structures, aliphatic ethers and sulphur will decrease biodegradability. This predictive model based on functional groups can be used by drinking water companies to make a first estimate whether a newly detected compound will be biodegraded during the first metre of RBF or that additional treatment is required.In addition, the influence of active and inactive biomass (biosorption), sand grains and the water matrix on OMP sorption was found to be negligible under the conditions investigated in this study. Retardation factors for most compounds were close to 1, indicating mobile behaviour of these compounds during soil passage. Adaptation of the biomass towards the dosed OMPs was not observed for a 6 month period, implying that new developed RBF sites might not be able to biodegrade compounds such as atrazine and sulfamethoxazole in the first few months of operation.
Keyword Biodegradation
Organic micropollutants
QSAR
River bank filtration
Sorption
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
Advanced Water Management Centre Publications
 
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