Removal of Dyes by using Rice Husk as Agricultural Solid Waste Adsorbent: Experimental investigation

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Removal of Dyes by using Rice Husk as Agricultural Solid Waste Adsorbent: Experimental investigation

September 9, 2021 Environment and Earth Science 0

Rice Husk (RH) Nano Activated Carbon (NAC) was used to remove methylene blue (MB) and black B (BB) colours from synthetic solutions in batch adsorption studies. Several operating factors, including pH (1-11), contact time (15-75 minutes), and temperatures, were evaluated for the two dyes of various concentrations (50-300 mg/l) (30-600C). At 30°C and pH 3 for MB and pH 11 for BB, the high adsorption capacity was achieved. The adsorption equilibrium was reached after 60 minutes. The findings of the determination of adsorption isotherms were analysed utilising the Isotherm models Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich The Freundlich and Langmuir isotherm models were both beneficial for MB dye, whereas Langmuir was exclusively beneficial for BB dye. Pseudo-first order and pseudo-second order kinetics were studied by the researchers. According to the data, the uptake rate of the NAC adsorbate followed a pseudo second order kinetic model for both colours.

Author (S) Details

Sara G. Abd-elnaeem
Chemical Engineer Division, Engineering Dept., National Research Center, Egypt.

Azza. I. Hafez
Chemical Engineer Division, Engineering Dept., National Research Center, Egypt.

Rania M. Sabry
Chemical Engineer Division, Engineering Dept., National Research Center, Egypt.

T. E. Shakinas
Engineering Division, Faculty of Engineering, Cairo University, Egypt.

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