BATCH MODE BIOREMEDIATION STUDY ON REACTIVE BLUE-HER BY Cladosporium oxysporum
DOI:
https://doi.org/10.46243/jst.2022.v7.i02.pp01-10Keywords:
Langmuir model, Bioremediation, Azo dyes, textile dyes, Isotherms, Adsorption, Cladosporium sp.Abstract
The fungus, Cladosporium oxysporum Berk. and Curt. was screened for their ability to decolourize Reactive Blue HER in aqueous solutions and observed that had higher dye decolourization (99.81 %) achieved by live biomass, dead biomass. In batch mode (Agitated mode), the lower concentrations (10 mg/L) of Reactive Blue showed complete removal (100%) at an equilibrium time of
60 min for both live and autoclaved biomass. Dye adsorption isotherm, Langmuir model fitted well with
2
R values more than 0.9. RL (equilibrium parameter) values (indicating type of isotherm) of live and
autoclaved mycelia at different adsorbate concentrations were always less than one and more than zero thereby indicating favourable adsorption of dyes onto the adsorbent. With the increase of dosage, no re-stabilization phenomenon or removal reduction was observed. Highest adsorption was observed in autoclaved biomass, 48.31 mg/g. Agitated mode was found to be more efficient and easy to operate for the removal of dyes.
