BIOSORPTION OF Cu(II) BY LIVE AND DEAD CELLS OF Yarrowia lipolytica BIOSORPCJA Cu(II) PRZEZ ŻYWE I MARTWE KOMÓRKI Yarrowia lipolytica
نویسندگان
چکیده
The biosorption characteristic of Cu(II) using live and dead cells of Yarrowia lipolytica as biosorbents have been investigated in the present research. Biosorption of Cu(II) was enhanced with an increase in pH, temperature, agitation, contact time and initial concentration of the metal ion. It was observed that dead and live biomass efficiently removed copper at 30 min at an initial pH of 5.0. Temperature of 35oC was optimum at agitation speed of 150 or 200 rpm. For initial copper concentrations of 1-200 mg · dm, the adsorption data provide an excellent fit to the Langmuir isotherm. Experimental maximum biosorption capacity turned out to be 12.56 mg · g for living material and 14.31 mg · g for dead sorbents, respectively.
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