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Influence of bacterial consortium for copper biosorption and accumulation

2018; American Institute of Physics; Volume: 2002; Linguagem: Inglês

10.1063/1.5050168

1935-0465

Wahyu Irawati, Nommensen Pangihutan Ompusunggu, Triwibowo Yuwono,

Extraction and Separation Processes

Pollutant treatments are part of the human calling, as the crown of creation, to subdue, preserve, and cultivate the earth in bringing goodness for all creatures. The removal of pollutants is the major task of bioremediation involving a sequence of biological processes carried out by a consortium of the microbial community. The ability of bacterial communities in the natural process facilitates the bacteria to grow and survive in the presence of copper by accumulating copper inside the cells. The research aimed to study the influence of Acinetobacter sp. IrC1, Acinetobacter sp. IrC2, and Cupriavidus sp. IrC4 bacterial consortia on its capability to grow, as well as to biosorp and to accumulate copper. The bacterial consortium was isolated from activated sludge in an industrial wastewater treatment plant in Rungkut-Surabaya, Indonesia. The growth of bacterial consortium was monitored by measuring optical density at 600 nm. The ability of bacterial consortium to accumulate and biosorp copper were determined by atomic absorption spectrophotometer. The results showed that the potential of the bacterial consortium to grow, biosorp and accumulate copper was higher than the pure culture. However, Acinetobacter sp. IrC1 and Cupriavidus sp. IrC4 was the best bacterial consortia when grown in medium containing 3 mM of copper. The highest number of copper biosorption and copper accumulation was obtained from the consortia of Acinetobacter sp. IrC1 and Cupriavidus sp. IrC4 with a total of 33 % and 3.49 mg · g−1 dry weight of cells when it was grown on to a medium supplemented with 3 mM CuSO4, respectively.