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Publikācija: Biodegradation of Oil Sorbed on Peat after its Use as a Spill Cleanup Sorbent

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Nosaukums oriģinālvalodā Biodegradation of Oil Sorbed on Peat after its Use as a Spill Cleanup Sorbent
Pētniecības nozare 2. Inženierzinātnes un tehnoloģijas
Pētniecības apakšnozare 2.4. Ķīmijas inženierzinātne
Autori Olga Muter
Katrina Potapova
Dmitrijs Porsnovs
Maris Klavins
Atslēgas vārdi peat sorbent; hydrocarbons; biodegradation; enzymatic activity
Anotācija Thermally treated peat is known to be a prospective sorbent for oil removal. The used oil spill clean-up sorbents could be further reused for a few cycles, if an appropriate treatment is undertaken. In this study, a 36 days biodegradation batch experiment was performed with oil-degrading bacteria consortium MDK.EKO-7 and a peat sorbent (PeatOS) contaminated with diesel or raw oil. FDA hydrolysis, urease and dehydrogenase activity, as well as the concentration of hydrocarbons were measured in a peat-slurry system. Biodegradation of hydrocarbons up to 90 % was detected in the set with 2% (w/w) diesel-oil contaminated peat. The measured enzymes behaved differently over time. The peat sorbent (PeatOS) contaminated by raw oil with concentration 5mg/g dw, inhibited growth of bacteria consortium. Addition of nitrogen and plant extract to a peat-slurry with 2% diesel resulted in a significant (p<0.05) increase of FDA hydrolysis and urease activity after 36 days' incubation. The results obtained in this study, indicate that a recovery of the used oil-spilled peat sorbent is possible. Further experiments will be performed in order to optimise biodegradation conditions, using nutrients and surfactants.
Atsauce Muter, O., Potapova, K., Porsnovs, D., Klavins, M. Biodegradation of Oil Sorbed on Peat after its Use as a Spill Cleanup Sorbent. Materiālzinātne un lietišķā ķīmija . Nr.26, 2012, 120.-126.lpp. ISSN 1407-7329. e-ISSN 2255-8713.
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