Header menu link for other important links
Batch and continuous flow studies of adsorptive removal of Cr(VI) by adapted bacterial consortia immobilized in alginate beads
Samuel J, Pulimi M, Paul M.L, Maurya A, , ,
Published in Elsevier BV
PMID: 23201524
Volume: 128
Pages: 423 - 430

The adsorptive removal of Cr(VI) by alginate beads containing Cr(VI)-adapted Acinetobacter junii, Escherichia coli and Bacillus subtilis in batch and continuous packed bed column reactors was investigated. Under optimized conditions (pH 3.0; contact time, 180. min; 30°C; initial Cr(VI) concentration of 100. mg/L), 65.86. mg/g adsorption capacity was recorded in the batch study. When an adsorbent dosage of 1. g/L, a flow rate of 5. mL/min, a bed height of 20. cm, an initial Cr(VI) concentration of 300. mg/L was employed, a capacity of 657. mg/g was noted for the continuous column assay. The batch sorption data followed the Langmuir isotherm and pseudo second order kinetics. Five sorption/desorption cycles yielded 100%, 99.63%, 95.31%, 80.7% and 74.22% regeneration, respectively. Cr(VI) adsorption studies using spiked ground water, freshwater and domestic wastewater in a packed bed reactor demonstrated Cr(VI) removals of 64.8%, 55.08%, 56.86% respectively. Cr(VI) sorption on immobilized bacteria was confirmed with Fourier-transform infrared and Energy dispersive X-ray spectroscopy.

About the journal
JournalData powered by TypesetBioresource Technology
PublisherData powered by TypesetElsevier BV
Open Access0
Authors (3)