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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(12): 3029-3039
DOI: https://doi.org/10.20546/ijcmas.2017.612.354


Bioremediation of High Strength Ammonia Laden Fertilizer Industry Effluent with Extremely Low C: N Ratio Using Simultaneous Aerobic Nitrification and Denitrification
Radhika Priyadarshan Keluskar1,2*
1Department of Microbiology and Biotechnology Centre, The M. S. University of Baroda, Vadodara - 390 002, Gujarat, India
2Department of Post-Harvest Technology, ICAR-Central Institute of Fisheries Education (CIFE), Andheri (W), Mumbai-400061, India
*Corresponding author
Abstract:

In the present study, autotrophic ammonia- and nitrite- oxidizing bacteria (AOB and NOB respectively) were enriched and methodically added to treat ammonia laden effluent (700 ppm) of a fertilizer industry with exceedingly low C: N ratio. An open aerobic reactor system of 5.3 L was developed and run in the batch mode for the first 30 days to acclimatize the biomass with increasing effluent concentration. A linear correlation was observed during the batch mode between the amount of ammonia oxidized and the ammonia loading rate (R2 0.79). On making the system continuous, 99% NH4+-N removal was achieved along with complete utilization of indigenous carbon without accumulation of NO2--N and NO3--N. Molecular microbial analysis showed presence of AOB belonging to Nitrosomonas sp., NOB belonging to Nitrobacter sp. and aerobic denitrifiers mainly Achromobacter sp., Sphingomonas sp., Pusillimonas sp., Mesorhizobium sp. and Alcaligenes sp. coexisting in the system. Their concerted growth and simultaneous aerobic nitrification denitrification (SND) activity led to efficient removal of nutrients from the effluent and suggested high potential of the developed system in bioremediating industrial effluents with low C: N ratio.


Keywords: Simultaneous nitrification and denitrification, Industrial effluent, Ammonia oxidizing bacteria, Nitrite oxidizing bacteria, Aerobic denitrifiers, Wastewater treatment.
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How to cite this article:

Radhika Priyadarshan Keluskar. 2017. Bioremediation of High Strength Ammonia Laden Fertilizer Industry Effluent With Extremely Low C: N Ratio Using Simultaneous Aerobic Nitrification and Denitrification.Int.J.Curr.Microbiol.App.Sci. 6(12): 3029-3039. doi: https://doi.org/10.20546/ijcmas.2017.612.354