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Abstract

BIOSORPTION OF CADMIUM FROM AQUEOUS SOLUTION BY USING POWDERED DEAD OF ASPERGILLUS NIGER

Ibtisam M. B. El-Dhuwaib*, Fawzi S. Al- Zubaidi and Alaa M. Y. Al-arraji

Abstract

Aspergillus niger was isolated from wastewater of batteries factory in Baghdad, Iraq. Biosorption of cadmium from solution was studied using powder A.niger biomass. Biosorption experiment was conducted in 20ml of solution at 10mg/L initial concentration, with different pH (2, 3, 4, 5, 6, 7, 8) and variable temperatures (30, 35, 40), with contact times (1, 2, 3, 4, 5, 24 hr.) and pretreated fungal biomass (0.1g). Optimum conditions were selected for biosorption uptake onto fungi biomass. The best pH was found to be 6 for Cd(II). The optimum temperature was found to be 40 °C for Cd(II) ions. The optimum contact time was found to be 3 hr for Cd(II). The results indicated that fungi have high ability to removing cadmium.

Keywords: Biosorption, Cadmium, Aspergillus niger.


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