Biological denitrification of groundwater

    Research output: Contribution to journalArticlepeer-review

    206 Scopus citations


    Nitrate concentrations in groundwater have increased in many areas of the world. This causes serious concerns because of the link found between nitrate and the blue-baby syndrome, and of the possible formation of carcinogenic compounds in the digestive tract. Biological denitrification, bacteria-mediated reduction of nitrate to nitrogen gas, is a method used in the treatment of nitrate contaminated groundwater. The denitrifying microorganisms require carbon and energy substrates which may be organic or inorganic compounds. Treatment can take place in the aquifer (in situ treatment) or in above ground reactors. Numerous biological denitrification processes have been reported; this paper reviews some of this work and studies in progress in the author's laboratory. The choice of a biological denitrification system has to be considered on an individual basis. Although preventive measures are curbing the problem in some developed countries, nitrate pollution is still on the rise in many other countries. Innovative, low-cost biological denitrification processes are specially needed in developing countries.

    Original languageEnglish
    Pages (from-to)183-193
    Number of pages11
    JournalWater, Air, and Soil Pollution
    Issue number1-4
    StatePublished - 1 Oct 2000


    • Bacteria
    • Biological denitrification
    • Groundwater
    • Nitrate removal
    • Water treatment

    ASJC Scopus subject areas

    • Environmental Engineering
    • Environmental Chemistry
    • Ecological Modeling
    • Water Science and Technology
    • Pollution


    Dive into the research topics of 'Biological denitrification of groundwater'. Together they form a unique fingerprint.

    Cite this