Dr. Chandrasekar Srinivasakannan
Dr. Chandrasekar Srinivasakannan
Khalifa University of Science and Technology (The Petroleum Institute), United Arab Emirates
Title: Conversion of Petroleum Coke to Porous Carbon through Design Optimization and its Application to Refinery Waste Water Treatment
Preparation and process optimization of porous carbons using different carbon sources and activating agents are frequently and commonly reported in open literature. However, only scanty references are made on utilization of petroleum coke for conversion to high surface area porous carbon using KOH as the activating agent. Hence the present work attempts a process optimization exercise to prepare high surface area porous carbon from Petroleum coke using chemical activation (KOH) utilizing design of experiments. The effect of activation temperature, petroleum coke to KOH ratio (KPR) and activation duration were assessed on the surface area and yield of the porous carbon. The process optimization was performed covering experimental parameters in the range of 500-800⁰C, 2-5 and 30-120 min. The optimal process conditions for maximizing the yield and BET surface area was identified to be an activation temperature of 639⁰C, KPR of 4.5 and activation duration of 43 min, having BET surface area 1765 m2/g and yield of 89.8%. However, an attempt to maximize only the BET surface area, ignoring yield has resulted with a porous carbon with maximum surface area of 2061 m2/g, with the optimal process conditions being an activation temperature of 688⁰C, KPR of 3.8 and activation duration of 74 min, with the corresponding yield of only 77%. The characterization of porous carbon was performed using nitrogen adsorption isotherm, FT-IR and SEM analysis. Effectiveness of its application in comparison with the commercial porous carbon that are being utilized in the polishing units of the petroleum refinery to remove the phenolic compounds and the COD load is as well presented.
Dr. C. Srinivasakannan is currenlty a Professor in the Chemical Engineering Department of the Petroluem Institute, Abu Dhabi, UAE. He has published over 180 papers in internatinal journals of repute. His research interest includes gas processing, fluidization, porous material, gasification, pyrolysis, waste to energy, waste water treatment. He holds a honorary professor position with the Kunming University of Science and Technology, China and with Macquarie University, Australia