Lead Removal from Aqueous Solutions Using Polyacrylicacid-Stabilized Zero-Valent Iron Nanoparticles

Amirhosein Ramazanpour Esfahani ； Ahmad Farrokhian Firouzi ； Gholamabbas Sayyad ； Alireza Kiasat

《Research Journal of Environmental and Earth Sciences》 5卷9期 (2013/09) Pp. 548-555

並列摘要

Polyacrylic Acid-stabilized Zero-Valent Iron Nanoparticle (PAA-ZVIN) was applied to remove Lead ion (Pb^(2+)) from aqueous solutions. In this regards, batch technique was carried out to examine the influence of experimental conditions such as pH of aqueous solutions, reaction time, concentration of PAA-ZVIN and initial concentration of Pb^(2+) on the removal of Pb^(2+) from aqueous solutions. Results of batch experiments showed that over 90% of Pb^(2+) removed after 15 min and at pH, 5. The removal efficiency rose with increasing PAA-ZVIN concentration. However, enhancing the initial Pb^(2+) concentration caused a considerable decrease in Pb^(2+) removal efficiency. In addition, Pseudo zero-order, Pseudo first-order and Pseudo second-order kinetic models were used to fit the experimental data of Pb^(2+) removal. Results of kinetic experiments indicated that Pseudo first-order kinetic model compared to other kinetic models had more ability to fit the experimental data of Pb^(2+) removal. In conclusion, this study revealed that PAA-ZVIN can be used as a promising adsorbent to remove Pb^(2+) from aqueous solutions.

並列關鍵字

Aqueous solutions ； kinetic ； Pb^(2+) removal ； polyacrylic acid ； zero-valent iron nanoparticles