Modeling of biosorption of chromium by immobilized whole cells of Aspergillus awamori NRRL 3112
Journal Title: Food Science and Applied Biotechnology - Year 2018, Vol 1, Issue 1
Abstract
The presence of chromium in high concentrations in industrial effluents is of major concern, being extremely toxic and non-biodegradable, thus persistent and harmful to the ecosystem. Using microorganisms for adsorption of heavy metals has emerged as a potential alternative over the conventional methods and is gaining significance due to its incontestable merits. Since fungi amass metals more than their nutritional requirement, the present study in investigation of efficiency of Aspergillus awamori NRRL 3112 biomass for sorption of chromium by means of development of an immobilised whole cell system is significant. The effect of operational parameters like initial chromium concentration, time, temperature and pH on chromium removal was studied and the efficient conditions for the process were established. Kinetics studies revealed that, the pseudo second order model was found to best represent the process with higher R2 values than others. The Langmuir and Freundlich isotherms were applied and the Langmuir isotherm was found to be the best fit. It was also established by means of thermodynamic analysis that the biosorption occurred chemically and the process was more feasible, spontaneous and efficient at lower temperatures.
Authors and Affiliations
David Daniel, Vaishnavi Mahadavan
Keywords
Related Articles
- EP ID EP607205
- DOI 10.30721/fsab2018.v1.i1.3
- Views 206
- Downloads 0
Magnetic nanoparticles based fluorescence immunoassay for food contaminants
Nanotechnology provides exciting new possibilities for advanced development of new analytical tools and instruments for bioanalytical applications. Magnetic nanoparticles (MNPs) have attracted much research interest in t...
Fatty acid profile of the backfat layers in four pig breeds
he aim of this study was to describe and compare the fatty acid profile of the backfat layers in four pig breeds – Landrace, Pietrain, Duroc and Large White. Six gilts per breed were used for the analysis. While differen...
Production of fumaric acid from Fumaria sp. plant in vitro systems
We report for the first time fumaric acid biosynthesis by in vitro systems of Fumaria spp. The highest amount of fumaric acid (137 mg/L) was accumulated by Fumaria officinalis L. plant cell culture, cultivated at submerg...
Stimulation of vital activity of lactic acid bacteria in the preparation of a liquid acid-forming ferments in bakery products
The influence of the new flour nutrient substrates with the introduction of phyto raw materials on the viability and activity of lactic acid bacteria cultured in liquid acid-forming ferments, which are used for making br...
Antifungal properties of SiO2/hydroxypropyl cellulose hybrid materials doped with zinc ions against Candida albicans 74
This study presents an investigation of antifungal properties of hybrid materials based on silica, hydroxypropyl cellulose and ZnSO4.7H2O. The hybrid materials were synthesized by sol-gel technique and as a source of sil...