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[Biocatalyst of redox mediators on the denitrification by Paracoccus versutus strain GW1].
Huan Jing Ke Xue. 2012 Jul; 33(7):2458-63.HJ

Abstract

The quinone respiration process of Paracoccus versutus strain GW1 was characterized and the effects of the four redox mediators on the denitrification process were studied. The experiment results suggested that quinones were utilized by Paracoccus versutus strain GW1 as electron acceptors in the respiratory chain and reduced to hydroquinone. Batch experiments were carried out to investigate the biocatalyst effect of redox mediators as catalyst on the denitrification process at 35 degrees C. All four redox mediators tested were able to enhance the nitrate removal efficiency and the denitrification efficiency by 1.14-1.63 fold and 1.12-2.02 fold, respectively. The accelerating effect from high to low was AQDS > 1,5-AQDS > AQS > alpha-AQS. In the presence of redox mediators, the stabilized ORP values in the nitrate decomposition process were reduced by 33-75 mV. The pH variations in denitrification with redox mediators showed similar tendency to that of the conventional nitrate removal process. In the concentration range of 0-0.32 mmol x L(-1), AQDS had the best accelerating effect and a linear correlation was found for the denitrification rate K and the AQDS concentration cAQDS. This study indicated that the application of redox mediators significantly improved the denitrification process by enhancing the decomposition rate.

Authors+Show Affiliations

School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China. LHB19850725@163.comNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

chi

PubMed ID

23002627

Citation

Li, Hai-Bo, et al. "[Biocatalyst of Redox Mediators On the Denitrification By Paracoccus Versutus Strain GW1]." Huan Jing Ke Xue= Huanjing Kexue, vol. 33, no. 7, 2012, pp. 2458-63.
Li HB, Lian J, Guo YK, et al. [Biocatalyst of redox mediators on the denitrification by Paracoccus versutus strain GW1]. Huan Jing Ke Xue. 2012;33(7):2458-63.
Li, H. B., Lian, J., Guo, Y. K., Zhao, L. J., Du, H. F., Yang, J. L., & Guo, J. B. (2012). [Biocatalyst of redox mediators on the denitrification by Paracoccus versutus strain GW1]. Huan Jing Ke Xue= Huanjing Kexue, 33(7), 2458-63.
Li HB, et al. [Biocatalyst of Redox Mediators On the Denitrification By Paracoccus Versutus Strain GW1]. Huan Jing Ke Xue. 2012;33(7):2458-63. PubMed PMID: 23002627.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Biocatalyst of redox mediators on the denitrification by Paracoccus versutus strain GW1]. AU - Li,Hai-Bo, AU - Lian,Jing, AU - Guo,Yan-Kai, AU - Zhao,Li-Jun, AU - Du,Hai-Feng, AU - Yang,Jing-Liang, AU - Guo,Jian-Bo, PY - 2012/9/26/entrez PY - 2012/9/26/pubmed PY - 2013/11/15/medline SP - 2458 EP - 63 JF - Huan jing ke xue= Huanjing kexue JO - Huan Jing Ke Xue VL - 33 IS - 7 N2 - The quinone respiration process of Paracoccus versutus strain GW1 was characterized and the effects of the four redox mediators on the denitrification process were studied. The experiment results suggested that quinones were utilized by Paracoccus versutus strain GW1 as electron acceptors in the respiratory chain and reduced to hydroquinone. Batch experiments were carried out to investigate the biocatalyst effect of redox mediators as catalyst on the denitrification process at 35 degrees C. All four redox mediators tested were able to enhance the nitrate removal efficiency and the denitrification efficiency by 1.14-1.63 fold and 1.12-2.02 fold, respectively. The accelerating effect from high to low was AQDS > 1,5-AQDS > AQS > alpha-AQS. In the presence of redox mediators, the stabilized ORP values in the nitrate decomposition process were reduced by 33-75 mV. The pH variations in denitrification with redox mediators showed similar tendency to that of the conventional nitrate removal process. In the concentration range of 0-0.32 mmol x L(-1), AQDS had the best accelerating effect and a linear correlation was found for the denitrification rate K and the AQDS concentration cAQDS. This study indicated that the application of redox mediators significantly improved the denitrification process by enhancing the decomposition rate. SN - 0250-3301 UR - https://www.unboundmedicine.com/medline/citation/23002627/[Biocatalyst_of_redox_mediators_on_the_denitrification_by_Paracoccus_versutus_strain_GW1]_ DB - PRIME DP - Unbound Medicine ER -