Copper removal using a heavy-metal resistant microbial consortium in a fixed-bed reactor
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Water Research
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A heavy-metal resistant bacterial consortium was obtained from a contaminated river in
Sao Paulo, Brazil and utilized for the design of a fixed-bed column for the removal of ~
copper. Prior to the design of the fixed-bed bioreactor, the copper removal capacity by the
live consortium and the effects of copper in the consortium biofilm formation were
investigated. The Langmuir model indicated that the sorption capacity of the consortium
for copper was 450.0 mg/g dry cells. The biosorption of copper into the microbial biomass
was attributed to carboxyl and hydroxyl groups present in the microbial biomass. The
effect of copper in planktonic cells to form biofilm under copper rich conditions was
investigated with confocal microscopy. The results revealed that biofilm formed after 72 h
exposure to copper presented a reduced thickness by 57% when compared to the control;
however 84% of the total cells were still alive. The fixed-bed bioreactor was set up by
growing the consortium biofilm on granular activated carbon (GAC) and analyzed for
copper removal. The biofilm-GAC (BGAC) column retained 45% of the copper mass present
in the influent, as opposed to 17% in the control column that contained GAC only. These
findings suggest that native microbial communities in sites contaminated with heavy
metals can be immobilized in fixed-bed bioreactors and used to treat metal contaminated
water.
Como referenciar
CARPIO, ISIS E.M.; MACHADO-SANTELLI, GLAUCIA; SAKATA, SOLANGE K.; FERREIRA FILHO, SIDNEY S.; RODRIGUES, DEBORA F. Copper removal using a heavy-metal resistant microbial consortium in a fixed-bed reactor. Water Research, v. 62, p. 156-166, 2014. DOI: 10.1016/j.watres.2014.05.043. Disponível em: http://repositorio.ipen.br/handle/123456789/8967. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.