title: Degradation of urea by bacteria and algae in mass algal cultures.
abstract: Studies were conducted to determine the role of bacteria and algae in the degradation of urea in industrial waste waters. The microflora accompanying algae in continuous cultures on waste waters from the nitrogen fertilizers industry was found to include bacteria capable of intensive degradation of urea. Urea hydrolyzing bacteria are with time eliminated from the algal culture. This elimination can be attributed to algal metabolites which inhibit the development of sensitive bacteria. The Chlorella vulgaris strain used in the treatment of wast waters from the nitrogen fertilizers industry did not hydrolyse urea.
mesh_terms: D001419:Bacteria / Q000201:enzymology / Q000254:growth & development / Q000378:metabolism*; D001673:Biodegradation, Environmental; D002708:Chlorella / Q000201:enzymology / Q000254:growth & development / Q000378:metabolism*; D005308:Fertilizers; D007220:Industrial Waste; D012722:Sewage; D013045:Species Specificity; D014508:Urea / Q000378:metabolism*; D014510:Urease / Q000378:metabolism; D014871:Water Microbiology
chemical_list: D005308:Fertilizers; D007220:Industrial Waste; D012722:Sewage; D014508:Urea; D014510:Urease