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Titolo:
Bioavailability of soil-sorbed biphenyl to bacteria
Autore:
Feng, YC; Park, JH; Voice, TC; Boyd, SA;
Indirizzi:
Michigan State Univ, Dept Crop & Soil Sci, E Lansing, MI 48824 USA Michigan State Univ E Lansing MI USA 48824 l Sci, E Lansing, MI 48824 USA Michigan State Univ, Dept Civil & Environm Engn, E Lansing, MI 48824 USA Michigan State Univ E Lansing MI USA 48824 Engn, E Lansing, MI 48824 USA
Titolo Testata:
ENVIRONMENTAL SCIENCE & TECHNOLOGY
fascicolo: 10, volume: 34, anno: 2000,
pagine: 1977 - 1984
SICI:
0013-936X(20000515)34:10<1977:BOSBTB>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
BIODEGRADATION; HYDROCARBONS; PHENANTHRENE; SORPTION; NAPHTHALENE; DESORPTION; CHEMICALS; SEQUESTRATION; SURFACTANTS; DEGRADATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Engineering, Computing & Technology
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Boyd, SA Michigan State Univ, Dept Crop & Soil Sci, E Lansing, MI 48824 USA Michigan State Univ E Lansing MI USA 48824 Lansing, MI 48824 USA
Citazione:
Y.C. Feng et al., "Bioavailability of soil-sorbed biphenyl to bacteria", ENV SCI TEC, 34(10), 2000, pp. 1977-1984

Abstract

Limited bioavailability of organic pollutants in soil may be a detriment to the successful application of bioremediation. The availability of soil-sorbed biphenyl to two biphenyl-degrading bacteria, Pseudomonas putida P106 and Rhodococcus erythropolis NY05, was assessed using a kinetic mineralization assay. Biphenyl was aged in four soils of different organic carbon (OC) contents (0.4-7.8%) for up to 274 days. With a biphenyl-soil contact time of 24 h, the initial mineralization rates (IMRs) ranged from 2.6 to 3.5 mu g. L-1.min(-1) for strain P106 and from 3.8 to 0.92 mu g.L-1.min(-1) for strain NY05. These IMRs were higher than those of soil-free controls and those predicted by a coupled desorption/biodegradation model, suggesting both strains of bacteria could access soil-sorbed biphenyl. For strain P106, biphenyl mineralization curves in slurries of four different soils were nearly coincident with those in soil-free systems containing the same total mass of biphenyl. This strain appeared to have immediate and complete access to thepool of sorbed biphenyl. The extent of bioavailability of soil-sorbed biphenyl decreased with increased aging. The decrease in availability was most pronounced within the first 80 days. The effect of soil organic matter content on bioavailability showed different trends for the two organisms.

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Documento generato il 06/04/20 alle ore 05:02:03