The Identification of Bacteria from Biomembrane Effluent at Cikacembang River, Majalaya, Bandung Regency

Abstract

Biological treatment is one of the effective treatment methods for degrading organic compounds by utilizing microorganisms to treat complex compounds in the effluent water into simpler substances. Thus microorganisms have important roles in biological process. Bacteria that are used can be in the form of non-indigenous bacteria of waste environment or indigenous bacteria. Therefore, the purpose of this research was to identify bacteria species within Biomembrane effluent (wastewater treatment reactor in Cikacembang River) using analytical method by performing series of biochemistry tests according to Manual for Identification of Medical Bacteriology (Cowan, 1974). Bacteria identification on this Biomembrane effluent was conducted because it was indicated that those bacteria have potencies to degrade wastes in river water. In addition, we also calculated the bacterial growth rate. The isolated bacteria belonged to Gram positive bacteria in which two bacteria were categorized as the member of Bacillus genus, while another bacterium was categorized as the member of the Corynebacterium genus. In this research, it was successfully identified several species of the isolated bacteria, namely Bacillus megaterium, Bacillus licheniformis, and Corynebacterium striatum that had growth rate of 139.28 mg/l/h, 130.35 mg/l/h, and 112.13 mg/l/h, respectively.