Paper Information

Journal:   IRANIAN JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE AND ENGINEERING (IJEHSE)   WINTER 2007 , Volume 4 , Number 1; Page(s) 9 To 12.
 
Paper: 

BIOSORPTIONOF CR (VI) BY RESTING CELLS OFASPERGILLUS SP.

 
 
Author(s):  SEN M.*, GHOSH DASTIDAR M.
 
* CENTRE FOR ENERGY STUDIES, INDIAN INSTITUTE OF TECHNOLOGY, HAUZ KHAS, NEW DELHI-L 10016, INDIA
 
Abstract: 

Biosorption of Cr(VI) from aqueous solution was studied in a batch bioreactor using the resting cells of filamentous fungal biomass (Aspergillus sp.) isolated from industrial wastewaters. The specific Cr(VI) removal (mg/g of dried biomass) decreased with increase in pH and increased with increase in initial Cr(Vl) concentration, upto 500 mg/L. By increasing biomass concentration from 2.4 to 5.2 g/L, the specific metal removal remained almost constant. The studies carried out by using the resting cells from various stages of growth indicated maximum Cr(VI) removal of 34.8 mg/g using the biomass from the beginning of the stationary phase. The adsorption equilibrium constants Q°(42.9 mg/g) and b (0.0091/mg) were obtained from the Langmuir adsorption isotherm model.

 
Keyword(s): ASPERGILLUS SP., BATCH BIOSORPTION, CHROMIUM (VI), LANGMUIR ADSORPTION ISOTHERM, RESTING CELLS
 
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