Impacts of Amount of Impregnated Iron in Granular Activated Carbon on Arsenic Adsorption Capacities and Kinetics
Iron impregnated granular activated carbons (Fe-GAC) with iron contents 1.64%–28.90% were synthesized through a new multi-step procedure developed in this research for investigation of the effects of iron amount on arsenic adsorption capacities and kinetics. Langmuir model was successfully used for fitting arsenic adsorption equilibrium data. The maximum adsorption capacity (qm ) increased significantly to a peak at 1,866.7–1,911.5 μg/g with iron contents of 11.49 – 15.03%. Further increase of iron contents caused gradual decrease of adsorption capacities. Iron content of Fe-GACs was found to affect arsenic adsorption rate. Pseudo-secondorder kinetic model can fit arsenic adsorption kinetics better than pseudo-first-order model. The adsorption rate constant increased with iron content increasing from 1.64% to 13.59% and then decreased with impregnated iron increase to 28.90%. The intraparticle diffusion rate increased initially with iron content up to 5.57% and then maintained at same level with iron content increased to 28.90%.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
Document Type: Research Article
Publication date: 2010-01-01
WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
- Subscribe to this Title
- Membership Information
- About WEF Proceedings
- WEFTEC Conference Information
- Learn about the many other WEF member benefits and join today
- Ingenta Connect is not responsible for the content or availability of external websites