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Title: Sorption, transport, and degradation of quinoline in unsaturated soil

Abstract

Sorption, transport, and aerobic biodegradation of quinoline have been studied in a Danish sandy soil. Quinoline is potentially highly biodegradable in soil by means of natural occurring microorganisms. Complete mineralization was observed with 7--10 days in batch experiments independent of pH. Relative to other creosote compounds (e.g., naphthalene and phenanthrene), low retardation factors were observed (R {lt} 10). The retardation factor was pH dependent with R = 6.9--9.6 at pH 4.6 and R = 2.5--6.5 at pH 7.0. At pH 4.6, R was two to three times lower than estimated from the batch experiments, likely due to nonequilibrium processes. Sorption increased at both pH levels when autoclaving the soil or when using water instead of 0.01 M Cacl{sub 2} as the solution phase. Biodegradation in soil column experiments was in accordance with the batch experiments and was dependent on the residence times. The highest degradation was observed at low pH with the highest retardation factor corresponding to the longest residence time. However, even at pH 7.0 where quinoline showed to be the most mobile, the estimated quinoline residence times in the topsoil seem adequate for obtaining complete mineralization under normal Danish weather conditions in the summer period.

Authors:
 [1]; ;  [2];  [3]
  1. Risoe National Lab. (Denmark)
  2. Aalborg Univ. (Denmark)
  3. VKI Horsholm (Denmark)
Publication Date:
OSTI Identifier:
696763
Resource Type:
Journal Article
Journal Name:
Environmental Science and Technology
Additional Journal Information:
Journal Volume: 33; Journal Issue: 17; Other Information: PBD: 1 Sep 1999
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; LAND POLLUTION; SOILS; ENVIRONMENTAL TRANSPORT; QUINOLINES; SORPTION; BIODEGRADATION; REMEDIAL ACTION

Citation Formats

Thomsen, A.B., Henriksen, K., Moeldrup, P., and Groen, C. Sorption, transport, and degradation of quinoline in unsaturated soil. United States: N. p., 1999. Web. doi:10.1021/es981065t.
Thomsen, A.B., Henriksen, K., Moeldrup, P., & Groen, C. Sorption, transport, and degradation of quinoline in unsaturated soil. United States. doi:10.1021/es981065t.
Thomsen, A.B., Henriksen, K., Moeldrup, P., and Groen, C. Wed . "Sorption, transport, and degradation of quinoline in unsaturated soil". United States. doi:10.1021/es981065t.
@article{osti_696763,
title = {Sorption, transport, and degradation of quinoline in unsaturated soil},
author = {Thomsen, A.B. and Henriksen, K. and Moeldrup, P. and Groen, C.},
abstractNote = {Sorption, transport, and aerobic biodegradation of quinoline have been studied in a Danish sandy soil. Quinoline is potentially highly biodegradable in soil by means of natural occurring microorganisms. Complete mineralization was observed with 7--10 days in batch experiments independent of pH. Relative to other creosote compounds (e.g., naphthalene and phenanthrene), low retardation factors were observed (R {lt} 10). The retardation factor was pH dependent with R = 6.9--9.6 at pH 4.6 and R = 2.5--6.5 at pH 7.0. At pH 4.6, R was two to three times lower than estimated from the batch experiments, likely due to nonequilibrium processes. Sorption increased at both pH levels when autoclaving the soil or when using water instead of 0.01 M Cacl{sub 2} as the solution phase. Biodegradation in soil column experiments was in accordance with the batch experiments and was dependent on the residence times. The highest degradation was observed at low pH with the highest retardation factor corresponding to the longest residence time. However, even at pH 7.0 where quinoline showed to be the most mobile, the estimated quinoline residence times in the topsoil seem adequate for obtaining complete mineralization under normal Danish weather conditions in the summer period.},
doi = {10.1021/es981065t},
journal = {Environmental Science and Technology},
number = 17,
volume = 33,
place = {United States},
year = {1999},
month = {9}
}