Original scientific paper

https://doi.org/10.5562/cca2363

Denitrification of Spent Regenerated Brine Using Molasses

Brigita Tepuš ; Municipal Enterprice Ptuj, Puhova 10, SI–2250 Ptuj, Slovenia
Marjana Simonič orcid.org/0009-0009-7015-296X ; Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, SI–2000 Maribor, Slovenia
Aleksandra Petrovič ; Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, SI–2000 Maribor, Slovenia
Jasmina Filipič ; Municipal Enterprice Ptuj, Puhova 10, SI–2250 Ptuj, Slovenia

Abstract

Spent BRINE from the regeneration of exhausted resins has to be properly treated before its disposal. The heterotrophic denitrification of regenerated brine was studied in present work. Molasses which served as a carbon source has until now not been applied during brine denitrification. The nitrate and nitrite consumptions were observed according to different ratios between total organic carbon and
nitrate (TOC / NO3 ratios) and the influence of NaCl was studied during batch experiments. This work
ascertained that molasses is a very good source of carbon, and no addition of other nutrients is necessary. The complete nitrate removal from regenerated brine could be achieved using molasses.

Keywords

nitrate; denitrification; regeneration brine; molasses; kinetics

Hrčak ID:

126947

URI

https://hrcak.srce.hr/126947

Publication date:

1.7.2014.

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