title: Suitability of different growth substrates as source of nitrogen for sulfate reducing bacteria.
abstract: Sulfate reducing bacteria (SRB) mediated treatment of acid mine drainage is considered as a globally accepted technology. However, inadequate information on the role of nitrogen source in the augmentation of SRB significantly affects the overall treatment process. Sustenance of SRB depends on suitable nitrogen source which is considered as an important nutrient. This review focuses on the different nitrogen rich growth substrates for their effectiveness to support SRB growth and sulfate reduction in passive bioreactors. Compounds like NH4Cl, NH4HCO3, NO3 (-), aniline, tri-nitrotoluene, cornsteep liquor, peptone, urea, and chitin are reported to have served as nitrogen source for SRB. In association with fermentative bacteria, SRB can metabolize these complex compounds to NH4 (+), amines, and amino acids. After incorporation into cells, these compounds take part in the biosynthesis of nucleic acids, amino acids and enzyme co-factor. This work describes the status of current and the probable directions of the future research.
authors.affiliation: Department of Mining Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
authors.forename: Subhabrata
authors.initials: S
authors.lastname: Dev
authors.affiliation: Department of Mining Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
authors.forename: Aditya Kumar
authors.initials: AK
authors.lastname: Patra
authors.affiliation: Department of Geology and Geophysics, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.|School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
authors.forename: Abhijit
authors.initials: A
authors.lastname: Mukherjee
authors.affiliation: Department of Mining Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India. jayantaism@gmail.com.|School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India. jayantaism@gmail.com.
authors.forename: Jayanta
authors.initials: J
authors.lastname: Bhattacharya
mesh_terms: D000143:Acids / Q000378:metabolism; D001673:Biodegradation, Environmental; D019149:Bioreactors / Q000382:microbiology; D009584:Nitrogen / Q000378:metabolism*; D013431:Sulfates / Q000378:metabolism; D016999:Sulfur-Reducing Bacteria / Q000254:growth & development / Q000378:metabolism*
chemical_list: D000143:Acids; D013431:Sulfates; D009584:Nitrogen
keywords: Biological sulfate reduction; C/N ratio; Metabolic pathway; Nitrogen source; Sulfate reducing bacteria