Bioremediation of Tannery Wastewater Using Immobilized Marine Microalga Tetraselmis sp.: Experimental Studies and Pseudo-Second Order Kinetics

Bioremediation of Tannery Wastewater Using Immobilized Marine Microalga Tetraselmis sp.: Experimental Studies and Pseudo-Second Order Kinetics

The removals of pollutants (nitrate, silicate, chromium and sulphide) from tannery wastewater were studied in batch experiments using marine microalgae. In this study five different microalgae species were used, out of these Tetraselmis sp. was found to be the most promising one. This species was further studied by employing several factors like variation in pH, retention time, algal cell density and beads density in order to understand the effect of biosorption on the pollutants. The higher biosorption percentage was achieved with a short retention time, while the sorption capacity of the algal cell density increased with the rise in the concentration of pollutants.