I NTERNATIONAL J OURNAL OF C HEMICAL R EACTOR E NGINEERING Volume 8 2010 Article A19 Approximate Solution of Time-Fractional Chemical Engineering Equations: A Comparative Study Najeeb Alam Khan * Asmat Ara † Amir Mahmood ‡ * University of Karachi, njbalam@yahoo.com † University of Karachi, noble.asmat@yahoo.com ‡ Virtual University of Pakistan, Lahore, Pakistan, amir4smsgc@gmail.com ISSN 1542-6580 Brought to you by | Brown University Rockefeller Library Authenticated | 128.148.252.35 Download Date | 12/15/12 4:17 AM