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Comparison of single and joint effects of Zn and Cu in continuous flow and batch reactors

Sengor, Sema S., Gikas Petros, Moberly James, Peyton Brent M. , Ginn Timothy R.

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URIhttp://purl.tuc.gr/dl/dias/6FBB3333-A7B1-48B4-9624-8F44DCB4A17B-
Αναγνωριστικόhttp://onlinelibrary.wiley.com/doi/10.1002/jctb.2730/full-
Αναγνωριστικόhttps://doi.org/10.1002/jctb.2730-
Γλώσσαen-
Μέγεθος7 pagesen
ΤίτλοςComparison of single and joint effects of Zn and Cu in continuous flow and batch reactorsen
ΔημιουργόςSengor, Sema S.en
ΔημιουργόςGikas Petrosen
ΔημιουργόςΓκικας Πετροςel
ΔημιουργόςMoberly Jamesen
ΔημιουργόςPeyton Brent M. en
ΔημιουργόςGinn Timothy R.en
ΕκδότηςJohn Wiley and Sonsen
ΠερίληψηMicrobial behavior in batch reactors may be different from that in continuous flow reactors, which is expected to affect microbial response to heavy metal exposure. Four parallel continuous flow reactors and batch growth tests were used to investigate the single and joint toxicity of Zn and Cu to Artrobacter sp. JM018. RESULTS: The results indicated that Cu is more toxic than Zn under all conditions. In the batch reactors, all Zn concentrations showed a stimulatory effect on microbial growth. However in the continuous system, 125 µmol L−1 Zn exposure produced inhibition. In the case of mixed Zn and Cu exposures in the batch system, the presence of Zn reduced the severity of Cu inhibition, with a net impact of reduced growth in all cases, whereas in the continuous system microbial growth and substrate utilization rates sharply decreased and ceased. CONCLUSION: The results clearly showed that growth in batch reactors underestimated significantly the heavy metal inhibition, compared with the continuous system. Therefore, the results of batch reactor tests should not be used directly when heavy metal inhibition is to be interpreted for continuous flow systems.en
ΤύποςPeer-Reviewed Journal Publicationen
ΤύποςΔημοσίευση σε Περιοδικό με Κριτέςel
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2015-11-03-
Ημερομηνία Δημοσίευσης2012-
Θεματική ΚατηγορίαZnen
Θεματική ΚατηγορίαCuen
Βιβλιογραφική ΑναφοράS. S. Sengor, P. Gikas, T. R. Ginn, J. Moberly and B. Peyton, "Comparison of single and joint effects of Zn and Cu in continuous flow and batch reactors", J. Chem. Technol. Biotechnol., vol. 87, no. 3, pp. 374-380, Mar. 2012. doi:10.1002/jctb.2730en

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