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Cereal Based Traditional Beverage of Tella Residue (Attela) as a Green Organic Pollutant Sorbent for Methylene Blue Dye Removal : Equilibrium, Kinetics and Thermodynamic Studies


Affiliations
1 Department of Chemistry, College of Natural and Computational Science, Injibara University, Injibara, Ethiopia
2 Department of Chemical Engineering, College of Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, Province of China
3 Department of Chemical Engineering, Faculty of Chemical and Food Engineering, Bahir Dar University Institute of Technology, Bahir Dar University, Bahir Dar, Ethiopia
4 Department of Chemistry, Faculty of Natural and Computational Science,Woldia University, Woldia, Ethiopia
5 Department of Mechanical Engineering, Faculty of Mechanical and Industrial Engineering, Bahir Dar Institute of Technology-Bahir Dar University, BahirDar, Ethiopia
 

Dyes are one the foremost hazardous pollutants that affects bio life including the flora and fauna and removing of those pollutants from contaminated environment are remarkable activities within the scientific community. In this respect, the current study is focused on preparation of physiochemical activated cereals based tella residue bio adsorbent for basic blue dye (MB) removal from aqueous environment. Different analytical methods have been utilized to assess the thermal stability, surface area, surface morphology, pore size, pore volume, surface functional group, and a few proximate analyses of the prepared bio adsorbents. The SEM and BET results of the adsorbents reveals physiochemical activation process assists for the formation of visible pores, cracks, irregular shape, and better surface area (51.32 m2 /g for RTR and 565m2 /g for ATR) respectively. The removal efficiencies of MB by RTR and ATR in an exceedingly batch experiment were 88.4s and 97.2 % at situation of pH (8); adsorbent dosage (0.8 for RTR and 0.6 for ATR), agitation speed (300 rpm), dye concentration (10 mg/L), temperature (298° K) and contact time (100 minute) respectively. The kinetics and equilibrium result of dye adsorption process well described by Pseudo 2nd order kinetic and Langmuir isotherm model respectively. The thermodynamic finding result shows the spontaneous and endothermic nature of the sorption process. The probable adsorption mechanism of MB dye on the prepared bio adsorbents surface may be assigned mainly through chemisorption. The results of this study show, the current adsorbents promise an alternate green rout for treatment dye contaminated wastewaters.

Keywords

Bio-Adsorbent, Chemical Activation, Methylene Blue Dye, Operational Parameter, Tella Residue.
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  • Cereal Based Traditional Beverage of Tella Residue (Attela) as a Green Organic Pollutant Sorbent for Methylene Blue Dye Removal : Equilibrium, Kinetics and Thermodynamic Studies

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Authors

Gietu Yirga Abate
Department of Chemistry, College of Natural and Computational Science, Injibara University, Injibara, Ethiopia
Duong Tuan Anh Nguyen
Department of Chemical Engineering, College of Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, Province of China
Adugna Nigatu Alene
Department of Chemical Engineering, Faculty of Chemical and Food Engineering, Bahir Dar University Institute of Technology, Bahir Dar University, Bahir Dar, Ethiopia
Desalegn Adisu Kassie
Department of Chemical Engineering, Faculty of Chemical and Food Engineering, Bahir Dar University Institute of Technology, Bahir Dar University, Bahir Dar, Ethiopia
Yetayesh Abebaw Addiss
Department of Chemistry, Faculty of Natural and Computational Science,Woldia University, Woldia, Ethiopia
Smegnew Moges Mintesinot
Department of Mechanical Engineering, Faculty of Mechanical and Industrial Engineering, Bahir Dar Institute of Technology-Bahir Dar University, BahirDar, Ethiopia

Abstract


Dyes are one the foremost hazardous pollutants that affects bio life including the flora and fauna and removing of those pollutants from contaminated environment are remarkable activities within the scientific community. In this respect, the current study is focused on preparation of physiochemical activated cereals based tella residue bio adsorbent for basic blue dye (MB) removal from aqueous environment. Different analytical methods have been utilized to assess the thermal stability, surface area, surface morphology, pore size, pore volume, surface functional group, and a few proximate analyses of the prepared bio adsorbents. The SEM and BET results of the adsorbents reveals physiochemical activation process assists for the formation of visible pores, cracks, irregular shape, and better surface area (51.32 m2 /g for RTR and 565m2 /g for ATR) respectively. The removal efficiencies of MB by RTR and ATR in an exceedingly batch experiment were 88.4s and 97.2 % at situation of pH (8); adsorbent dosage (0.8 for RTR and 0.6 for ATR), agitation speed (300 rpm), dye concentration (10 mg/L), temperature (298° K) and contact time (100 minute) respectively. The kinetics and equilibrium result of dye adsorption process well described by Pseudo 2nd order kinetic and Langmuir isotherm model respectively. The thermodynamic finding result shows the spontaneous and endothermic nature of the sorption process. The probable adsorption mechanism of MB dye on the prepared bio adsorbents surface may be assigned mainly through chemisorption. The results of this study show, the current adsorbents promise an alternate green rout for treatment dye contaminated wastewaters.

Keywords


Bio-Adsorbent, Chemical Activation, Methylene Blue Dye, Operational Parameter, Tella Residue.

References