The adsorption of copper (II) by Z. ramigera immobilized on Ca-alginate in packed bed columns: a dynamic approach by stimulus-response technique and evaluation of adsorption data by moment analysis

1997 ◽  
Vol 65 (1) ◽  
pp. 81-86
Author(s):  
Mehmet Mutlu ◽  
Yeşim Sağ ◽  
Tülin Kutsal
Keyword(s):  
Packed Bed ◽  
Moment Analysis ◽  
Dynamic Approach ◽  
Stimulus Response ◽  
Adsorption Data ◽  
Ca Alginate ◽  
Packed Bed Columns

scholarly journals Development of a bioreactor system for the remediation of endosulphan

2018 ◽  
Vol 2 (1) ◽  
pp. 1-8 ◽  
Author(s):  
K. Jesitha ◽  
P. S. Harikumar
Keyword(s):  
Detection Limit ◽  
Calcium Alginate ◽  
Packed Bed ◽  
Alginate Beads ◽  
Soil Samples ◽  
Packed Bed Reactor ◽  
Contaminated Water ◽  
Initial Concentration ◽  
Bioreactor System ◽  
Ca Alginate

Abstract A bioreactor system that consisted of Pseudomonas fluorescens cells immobilised in calcium-alginate beads was utilised to remediate endosulphan contaminated water and soil. A packed bed reactor system was designed for the bio-degradation of endosulphan in artificially spiked water samples (initial concentration of endosulphan: 350 µg/L). Reactor studies with cell-immobilised Ca-alginate beads were conducted after checking their efficiency through batch and column degradation studies. The results showed that the concentration of toxic isomers of endosulphan (endosulphan alpha and endosulphan beta) was below the limit in the bioreactor during the 7th day of the experiment. Experiments conducted with contaminated soil samples (initial concentration of endosulphan: 1,000 μg/kg) indicated that the toxic isomers of endosulphan degraded to below the detection limit within 10 days and monitoring of endosulphan residues on the 14th day revealed that almost complete degradation of metabolites of endosulphan had occurred. The bioreactor system designed can be scaled up for remediation of endosulphan in contaminated areas.

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