Evaluation of sulfur-based autotrophic denitrification and denitritation for biological removal of nitrate and nitrite from contaminated waters

► Sulfur-based removal of nitrate and nitrite from organic-deficient contaminated water. ► Use of an oil reservoir culture functioning both autotrophically and heterotrophically. ► Elimination of lime and associated problems through the use of bicarbonate. ► Achieving nitrate and nitrite removal rates much higher than reported values. ► Contrasting autotrophic and heterotrophic denitrification and denitritation.