EXPLORING DEFLUORIDATION CAPACITY OF TURMERIC ON INDUSTRIAL SEWAGE

Abstract

ABSTRACT
Objective: This research was carried out for developing a low-cost agro-based biosorbent for defluoridation of wastewater. Here, we investigated the
defluoridation capacities of simple turmeric and MnO
2
-coated turmeric.
Methods: The defluoridation capacity of turmeric had been investigated through batch sorption techniques. In the batch sorption technique, the
effect of various parameters such as adsorbent dose, initial fluoride concentration, and pH had been studied, and these parameters are optimized for
maximum fluoride removal efficiency. Each adsorbent was characterized using various techniques such as Fourier transform infrared spectroscopy,
scanning electron micrograph, and Energy Dispersive Analysis of1 X-Ray. The adsorption kinetics had been studied through different kinetics models
such as intra-particle diffusion model and pseudo-first order model. For adsorption equilibrium, we studied the conventional equilibrium models
such as Langmuir isotherm model and Freundlich isotherm model.
Results: The result of the performed experiments shows that for turmeric and MnO
-coated turmeric, the values of pH, adsorbent dose, initial
concentration, and contact time were 7 and 6, 12 and 14 g/l, 20 and 20 mg/l, 60 and 75 minutes at which optimum defluoridation of about 89.9% and
94.34% occurs, respectively.
Conclusion: The result obtained from the experiments shows that the MnO
Keywords: Defluoridation, Turmeric, MnO
2
2
2
coating has increased the defluoridation capacity of the turmeric.
-coated turmeric, Fourier transform infrared spectroscopy, Scanning electron micrograph, Energy
Dispersive Analysis of X-Ray, Langmuir isotherm, Freundlich isotherm.