Denitrifikasyon ve Mikroorganizmalar

Abstract

Nitrogen is an essential nutrient for plant and animal growth. In addition, all microorganisms require nitrogen for protein synthesis and
growth. But, nitrate contamination of current and potential drinking water sources is a serious and ever-increasing problem. The toxicity of nitrates
for humans is not clearly understood. However, their consumption can cause infant methemoglobinemia. Reduction of nitrates into nitrites may
contribute to the formation of nitrosoamines, which are known carcinogens. Therefore, various unit processes have been used for nitrate removal
from drinking water and wastewater. Biological denitrification is highly selective for nitrate removal. Moreover, biological denitrification have
been used for years in wastewater treatments. Heterotrophic or autotrophic microorganisms have been used in biological denitrification. Biological
denitrification is cheaper than the other methods. Therefore, biological denitrification has been prefered. This review is preapered for this reason.