TY - JOUR
T1 - Optimization of oxytetracycline sorption onto iron modified montmorillonite
AU - Barbooti, Mahmood M.
AU - Alshuwaiki, Najah M.
AU - Su, Haiyan
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2020/3/5
Y1 - 2020/3/5
N2 - Aims: Iraqi montmorillonite was saturated with iron (III) to investigate the improvement in the adsorption efficiency towards the antibiotics represented by oxytetracycline Methods Design of Experiments was carried out to determine the effect of experimental conditions: initial oxytetracycline molarity concentration (0.1-1.0 mM), montmorillonite content (0.5 - 10 g/L) and the pH value of the solution (3-10) on the adsorption efficiency. Batch equilibration runs were also conducted to study the adsorption of OTC in aqueous solutions onto the modified clay mineral powder for 24 hours. The UV absorption of the residual material at 360 nm was employed to determine the remaining oxytetracycline after equilibration for 24 hours. The iron introduction into montmorillonite resulted in enhancement of adsorption efficiency towards oxytetracycline which may be related to the possibility of stable complex with Fe(III) to make a 1:3 complex with it. Results: On using the optimum conditions, a mathematical model simulating the operation for the treatment was obtained as follows: Eff % =-0.467+0.160 m + 0.839Co +0.126 pH - 0.046 m.Co + 0.041 Co 2 - 0.071 Co.pH Experimentally the OTC concentration could be decreased from 0.5 down to 0.03 mM in synthetic wastewater at a pH value of 5.5 by sorption onto 6.85g.L-1 clay (montmorillonite)/L. Conclusion: The treatment with iron allows the use of lower clay material to perform the OTC removal.
AB - Aims: Iraqi montmorillonite was saturated with iron (III) to investigate the improvement in the adsorption efficiency towards the antibiotics represented by oxytetracycline Methods Design of Experiments was carried out to determine the effect of experimental conditions: initial oxytetracycline molarity concentration (0.1-1.0 mM), montmorillonite content (0.5 - 10 g/L) and the pH value of the solution (3-10) on the adsorption efficiency. Batch equilibration runs were also conducted to study the adsorption of OTC in aqueous solutions onto the modified clay mineral powder for 24 hours. The UV absorption of the residual material at 360 nm was employed to determine the remaining oxytetracycline after equilibration for 24 hours. The iron introduction into montmorillonite resulted in enhancement of adsorption efficiency towards oxytetracycline which may be related to the possibility of stable complex with Fe(III) to make a 1:3 complex with it. Results: On using the optimum conditions, a mathematical model simulating the operation for the treatment was obtained as follows: Eff % =-0.467+0.160 m + 0.839Co +0.126 pH - 0.046 m.Co + 0.041 Co 2 - 0.071 Co.pH Experimentally the OTC concentration could be decreased from 0.5 down to 0.03 mM in synthetic wastewater at a pH value of 5.5 by sorption onto 6.85g.L-1 clay (montmorillonite)/L. Conclusion: The treatment with iron allows the use of lower clay material to perform the OTC removal.
UR - http://www.scopus.com/inward/record.url?scp=85082039926&partnerID=8YFLogxK
U2 - 10.1088/1757-899X/737/1/012207
DO - 10.1088/1757-899X/737/1/012207
M3 - Conference article
AN - SCOPUS:85082039926
SN - 1757-8981
VL - 737
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
IS - 1
M1 - 012207
T2 - 4th International Conference on Buildings, Construction and Environmental Engineering, BCEE4 2019
Y2 - 7 October 2019 through 9 October 2019
ER -