Effect of sorption on the biodegradation of quinoline

Journal Article · · Soil Science Society of America Journal; (United States)

DOI:https://doi.org/10.2136/sssaj1992.03615995005600030011x· OSTI ID:5571407

Smith, S C; Ainsworth, C C ^[1]; Traina, S J ^[2]; Hicks, R J ^[3]

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1. Pacific Northwest Lab., Richland, WA (United States)
2. Ohio State Univ., Columbus, OH (United States)
3. Groundwater Technology, Inc., Concord, CA (United States)

Quinoline is an N-containing heterocyclic contaminant associated with creosote wastes and may be biologically degraded under aerobic and anaerobic conditions. Quinoline-degrading bacteria were utilized to investigate the rate of quinoline desorption from smectite clay at low surface concentrations and its subsequent mineralization. Fluorescence spectroscopy and [sup 14]C-quinoline mineralization techniques were used to compare the observed desorption rates to mineralization rates. Microbial utilization was desorption-rate limiting. Desorption and microbial utilization may be modeled as pseudo-first-order reactions whose first-order rate constant (k[sub obs]) is independent of surface concentration. The difference between quinoline disappearance from solution and from the clay surface as observed by fluorescence spectroscopy was comparable to the difference between microbial utilization of the solution and the surface-bound species. The utilization of quinoline from solution was about 30 times more rapid than surface-bound quinoline. The surface-bound species appeared to be protected from microbial attack and, hence, desorption was required prior to utilization. The desorption process is suggested to be a chemical-reaction-controlled process rather than film diffusion controlled, as is typically suggested for an exchange process. 41 refs., 9 figs., 3 tabs.

• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5571407
• Journal Information: Soil Science Society of America Journal; (United States), Journal Name: Soil Science Society of America Journal; (United States) Vol. 56:3; ISSN 0361-5995; ISSN SSSJD4
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
54 ENVIRONMENTAL SCIENCES
540200* -- Environment
Terrestrial-- (1990-)
AROMATICS
AZAARENES
AZINES
BACTERIA
BIODEGRADATION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
CLAYS
CREOSOTE
DECOMPOSITION
DESORPTION
EMISSION SPECTROSCOPY
FLUORESCENCE SPECTROSCOPY
HETEROCYCLIC COMPOUNDS
KINETICS
LAND POLLUTION
MICROORGANISMS
MINERALIZATION
MINERALS
MONITORING
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
POLLUTION
PYRIDINES
QUINOLINES
REACTION KINETICS
SILICATE MINERALS
SMECTITE
SOIL CHEMISTRY
SORPTION
SPECTROSCOPY
SURFACE PROPERTIES