Dr.Ravikumar Madugula | Wachemo - Academia.edu (original) (raw)
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Papers by Dr.Ravikumar Madugula
International Journal of ChemTech Research, 2019
International Journal of ChemTech Research, 2019
Daagu International Journal of Basic & Applied Research
The aim of the present study is to remove Congo red (CR) dye from their aqueous solution using Cl... more The aim of the present study is to remove Congo red (CR) dye from their aqueous solution using Cleodendrum fragrans leaves powder as biosorbent in a batch study. The variables covered in a batch study were contact time, solution pH, initial CR dye concentration, biosorbent dosage, average particle size of the biosorbent and temperature. The kinetic and isotherm studies of biosorption of CR dyes onto Cleodendrum fragrans biosorbent was investigated using various kinetic pseudo first order, pseudo-second order and isotherm models (Langmuir, Freundlich, Temkin). The experimental data of biosorption of the dye onto the Cleodendrum fragrans biosorbent fitted well with the Langmuir isotherm model. The isotherm reveals that the biosorption of the dye onto Cleodendrum fragrans biosorbent was favourable. Thermodynamic parameters such as Gibbs free energy, enthalpy change and entropy change were also estimated for the biosorption of CR dye. The thermodynamic studies indicated that the biosorption of Congo red dye onto Cleodendrum fragrans biosorbent was spontaneous, feasible and endothermic. Keywords
Teaching Documents by Dr.Ravikumar Madugula
International Journal of ChemTech Research, 2019
International Journal of ChemTech Research, 2019
Daagu International Journal of Basic & Applied Research
The aim of the present study is to remove Congo red (CR) dye from their aqueous solution using Cl... more The aim of the present study is to remove Congo red (CR) dye from their aqueous solution using Cleodendrum fragrans leaves powder as biosorbent in a batch study. The variables covered in a batch study were contact time, solution pH, initial CR dye concentration, biosorbent dosage, average particle size of the biosorbent and temperature. The kinetic and isotherm studies of biosorption of CR dyes onto Cleodendrum fragrans biosorbent was investigated using various kinetic pseudo first order, pseudo-second order and isotherm models (Langmuir, Freundlich, Temkin). The experimental data of biosorption of the dye onto the Cleodendrum fragrans biosorbent fitted well with the Langmuir isotherm model. The isotherm reveals that the biosorption of the dye onto Cleodendrum fragrans biosorbent was favourable. Thermodynamic parameters such as Gibbs free energy, enthalpy change and entropy change were also estimated for the biosorption of CR dye. The thermodynamic studies indicated that the biosorption of Congo red dye onto Cleodendrum fragrans biosorbent was spontaneous, feasible and endothermic. Keywords