Isolation and properties of ammonia-oxidizing bacteria from mangrove sediment, hanura lampung beach

Abstract

Mangrove forest area is an area that has good water quality. In the sediments of mangrove forests, there are many types of microbes capable of bioremediating inorganic contaminants such as ammonia and the heavy metal mercury. Isolation of bacteria was carried out using specific nitrification media to obtain ammonia-oxidizing bacteria. The sensitivity test for heavy metal mercury was carried out in the laboratory with 9 combinations of concentrations. The results of bacterial isolation from mangrove forest sediments at Hanura Beach, Lampung, obtained four isolates of ammonia-oxidizing bacteria (A1, A1P, A3, and A3P). The sensitivity test for heavy metal mercury showed that the four isolates obtained were able to survive the addition of heavy metal mercury by 0.003 g/L.