Roles and interactions of two methylotrophic bacterial strains in the development of a marine denitrifying biofilm

硝酸盐是一种高度可溶的分子，可以在地表水和地下水中迅速扩散，从而污染饮用水。这种化合物会导致河流和湖泊的富营养化以及河口和海洋环境中的有害藻类大量繁殖。硝酸盐是由含氮化合物的硝化作用产生的，或源于人为活动，如农业施肥。硝酸盐可以通过称为反硝化的微生物过程传播。当硝酸盐被用作电子受体，而不是氧气，用于细菌呼吸，最终产生分子氮（N2）时，就会发生这种情况。反硝化细菌存在于各种水生环境中，无论是在淡水还是海水中。反硝化过程可以包括在废水处理系统中，以防止有害的硝酸盐过量的环境释放

Nitrate is a highly soluble molecule that can rapidly diffuse in surface waters and groundwaters, and thus contaminate drinking water. This compound contributes to rivers' and lakes' eutrophication and harmful algal blooms in estuarine and marine environments. Nitrate is produced from nitrification of nitrogen-containing compounds or originates from anthropogenic activities such as agricultural fertilization. Nitrate can be disseminated through microbial process called denitrification. This occurs when nitrate is used as an electron acceptor, instead of oxygen, for bacterial respiration, to ultimately produce molecular nitrogen (N2). Denitrifying bacteria are found in a variety of aquatic environments, either in fresh water or seawater. A denitrification process can be included in wastewater treatment systems to prevent environmental release of detrimental nitrate excess