TY - JOUR
T1 - Removal of brilliant green dye from aqueous medium by untreated acid treated and magnetite impregnated bentonite adsorbents
AU - Ishaq, Mohammad
AU - Sultan, Siraj
AU - Ahmad, Imtiaz
AU - Saeed, Khalid
PY - 2017
Y1 - 2017
N2 - The untreated bentonite (UB), acid treated bentonite (ATB) and magnetite impregnated bentonite (MIB) has been examined as adsorbents for the removal of Brilliant green (BG) dye from aqueous medium. The batch adsorption experiments were conducted at different pH, contact time, adsorbent dosage, dye concentration and temperature. The adsorption of BG was dependent on pH of the solutions and the optimized pH value for their adsorption is 8. The adsorption data were fitted to Freundlich and Langmuir adsorption models, which were best fitted to Langmuir isotherm model. The monolayer adsorption capacity of UB, ATB and MIB was 689.6, 785, 877 mg/g, respectively. The kinetic study was analyzed by pseudo first, second and intraparticle diffusion models. It was found that adsorption of BG onto all three adsorbents followed pseudo second order kinetic model. The prepared adsorbents were also characterized by scanning electron microscopy (SEM), energy dispersive X-rays (EDX) and XRD.
AB - The untreated bentonite (UB), acid treated bentonite (ATB) and magnetite impregnated bentonite (MIB) has been examined as adsorbents for the removal of Brilliant green (BG) dye from aqueous medium. The batch adsorption experiments were conducted at different pH, contact time, adsorbent dosage, dye concentration and temperature. The adsorption of BG was dependent on pH of the solutions and the optimized pH value for their adsorption is 8. The adsorption data were fitted to Freundlich and Langmuir adsorption models, which were best fitted to Langmuir isotherm model. The monolayer adsorption capacity of UB, ATB and MIB was 689.6, 785, 877 mg/g, respectively. The kinetic study was analyzed by pseudo first, second and intraparticle diffusion models. It was found that adsorption of BG onto all three adsorbents followed pseudo second order kinetic model. The prepared adsorbents were also characterized by scanning electron microscopy (SEM), energy dispersive X-rays (EDX) and XRD.
KW - Adsorption
KW - Bentonite
KW - Brilliant green
KW - Kinetics
UR - http://www.scopus.com/inward/record.url?scp=85034030665&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:85034030665
SN - 0253-5106
VL - 39
SP - 780
EP - 787
JO - Journal of the Chemical Society of Pakistan
JF - Journal of the Chemical Society of Pakistan
IS - 5
ER -