Cereal based traditional beverage of tella residue (attela) as a green organic pollutant sorbent for methylene blue dye removal: Equilibrium, kinetics and thermodynamic studies

Indian Journal of Chemical Technology

article

Gietu Yirga Abate¹  Duong Tuan Anh Nguyen²  Adugna Nigatu Alene³  Desalegn Adisu Kassie³  Yetayesh Abebaw Addiss⁴  Smegnew Moges Mintesinot⁵ 

[1] Department of Chemistry, College of Natural and Computational Science, Injibara University;Department of Chemical Engineering, College of Engineering, National Taiwan University of Science and Technology;Department of Chemical Engineering, Faculty of Chemical and Food Engineering, Bahir Dar University Institute of Technology, Bahir Dar University;Department of Chemistry, Faculty of Natural and Computational Science,Woldia University;Department of Mechanical Engineering, Faculty of Mechanical and Industrial Engineering, Bahir Dar Institute of Technology-Bahir Dar University

关键词: Bio-adsorbent;    Chemical activation;    Methylene blue dye;    Operational parameter;    Tella residue;    Article;   

DOI  :  10.56042/ijct.v30i2.64532

学科分类：化学（综合）

来源: National Institute of Science Communication and Information Resources

【 摘 要 】

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 (298oK) 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.

【 授权许可】

CC BY-NC-ND