Biosorption of Heavy Metals by Candida albicans

Ismael Acosta, Juan Fernando Cardenas Gonzalez, Adriana Sarai Rodriguez Perez, Victor Manuel Martinez, Maria de Guadalupe Moctezuma Zarate and Nancy Cecilia Pacheco Castillo

A chapter in Advances in Bioremediation and Phytoremediation from IntechOpen

Abstract: The objective of this work was to study the resistance and removal capacity of heavy metals by the yeast Candida albicans. The resistance of some heavy metals was analyzed: the yeast grows in 2000 ppm of chromium, zinc, lead, and copper, 1500 ppm of arsenic (III), 500 ppm of silver, and little bit in cobalt (300 ppm) and mercury and cadmium (200 ppm). Analyzing its potential to remove heavy metals, it can efficiently remove is as follows: Cr(VI) (76%), lead (57%), silver (51%), cadmium (46%), fairly arsenic(III) (40% with the modified biomass), cobalt (37%), mercury (36%), copper (31%), little bit zinc (22%), and fluoride (10%). We determine the optimal characteristics for chromium(VI) removal in living cells and death biomass. The ideal conditions for the removal of 50 mg/L of Cr(VI) in living cells were 28°C, pH 7.0, and 10 × 106 yeast/mL, with glycerol-like carbon source. In dead yeast biomass, the ideal conditions for removal of metal are 200 mg/L of Cr(VI), 60°C, pH 1.0, 20 h, and 5 g of biomass.

Keywords: biosorption; heavy metals; Candida albicans; bioremediation; microorganism (search for similar items in EconPapers)
JEL-codes: Q57 (search for similar items in EconPapers)
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Persistent link: https://EconPapers.repec.org/RePEc:ito:pchaps:119666

DOI: 10.5772/intechopen.72454

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