Dr. Rex B. Demafelis is a PRC-licensed Chemical Engineer (ChE), & Professor 10 of U.P. Los Baños. Currently, he is the UPLB Vice-Chancellor for Research & Extension (2014-2017). He obtained his BS Chemical Engineering degree ( cum laude ) from the University of… Read More
Professor 12 and Professional Sugar Technologist (PRC License No. 88)
Department of Chemical Engineering
College of Engineering and Agro-Industrial Technology
University of the Philippines Los Baños
College, 4031 Laguna
T/F: +63 (049) 536-2315; 536-3664; 0918-241-8674
|1986||PhD Agronomy (Sugarcane Production) Cognates: Prod'n Econ.; Marketing||University of the Philippines Los Baños|
|1977||MS Agronomy, Major in Sugarcane Physiology and Minor in Biochemistry||University of the Philippines Los Baños|
|1973||BS Sugar Technology||University of the Philippines Los Baños|
Sugarcane By-Products Utilization
Biofuels (Bioethanol & Biodiesel)
Waste Management in the Sugar Industry
Movillon, J. L., C. B. Geron, Jr., S. A. Valencia, A.E. Parao, E. D. Revellame and K. D. Millena. 2007. Kinetics Study on Enzymatic Saccharification of Cornstarch. PIChE Journal 10 (1): 5-13.
Maguyon, M.M., C. G. Alfafara, V. P. Migo, J. L. Movillon, and R. R. Navarro. 2007. Treatability Study for the Electrochemical Treatment of Piggery Wastewater. PIChE Journal 10 (1): 36-45.
Borines, M.G., S. A. Valencia, J. L. Movillon, R. B. Demafelis and M. T. Ligayo. 2007. Enthalpy, Entropy and Gibb’s Free Energy of the Adsorption of Basic Dyes from Synthetic Textile Wastewater Using Sugarcane Bagasse Pith as Adsorbent. PIChE Journal 10(1): 62-70.
Geron, C.B. Jr., F. R. P. Nayve, C. G. Alfafara, J. L. Movillon, R. R. Navarro and E. R. Montibon. 2007. Design, Fabrication and Testing of a Bench-Scale and Continuous Flocculation System Using Rhizobium Exopolysaccharide ( EPS) Biopolymer and Malunggay ( Moringa oleifera) for Treatment of Copper-Containing Wastewater. PIChE Journal 10(1): 71-77.
Valencia, S.A., J. L. Movillon, C. G. Alfafara and E. E. D. Lee. 2007. Production of Hydrogen from Ethanol Through Steam Reforming Using a Fabricated Catalytic Reactor. PIChE Journal 10(1): 78-82.
Demafelis, R.B. V.R. Quiñonez, M.R. Martinez-Goss, V.P. Migo, J.L. Movillon, and P.R. Alberto. 2011. Parametric Study on Dilute Acid Pretreatment and Enzymatic Saccharification of Turbinaria ornate (Phaeophyta) for Hydrolysate Production. PIChE Journal 13(1) : 77-83.
Demafelis, R.B., T.C. Mendoza, E. Matanguihan, J.L. Movillon, et al. 2015. Carbon Footprint of Sugarcane Production & Raw Sugar Manufacture. 62nd PHILSUTECH Annual Convention, Aug. 13, 2015, Cebu City, Phil.
Rañola, Jr. R.F., J.L. Movillon, R.B. Demafelis. 2015. The Philippine Biofuels Industry:Defining Strategic Directions. DA-BAR, Diliman, Quezon City, and UPLB,College, Laguna, Phil. , 199 pages.
Valencia, S.A. and J.L. Movillon. 2007. Environmental engineering education at the forefront of water resources conservation and wastewater treatment. Journal of Development in Sustainable Agriculture, 2: 45-50.
Capunitan, J.A., C.G. Alfafara, V.P. Migo. J.L. Movillon, E.I. DIZON. 2008. Decolorization and Chemical Oxygen Demand (COD) Reduction of Sugar Refinery Spent Ion-Exchange-Process (SIEP) Effluent by Electrochemical Treatment Methods. The Phil. Agricultural Scientist, Vol. 91 ( 4): 416-425. (2009 NAST Best Paper Awardee)
Demafelis, R.B., J.L. Movillon, R.B. Badayos, B.G. Bataller and R.F. Rañola 2009. Opportunities and Challenges of Interphasing the Bioethanol Program with the Philippine Sugarcane Industry. Phil. Journal of Crop Science Vol. 34 (1): 99-112.
Movillon, J.L., R. B. Demafelis, R. P. Bautista, M. C. Lacsa, D. M. C. Viray and K. J. Cordova. 2012. Effects of Antioxidants Extracted from Leaves of “Banaba” (Lagerstroemia speciosa L.), Mangosteen (Garcinia mangostana L.) and “Tsaang Gubat” (Ehretia microphylla L.) on the Oxidation Stability of Biodiesel from Jatropha curcas L. Philippine Journal of Crop Science (PJCS) April 2012, 37 (1):8-14. Copyright 2012, Crop Science Society of the Philippines.
Del Barrio, M.C., R.B. Demafelis, S.M. Mercado, J.L. Movillon and C. M. Rebancos. 2012. Growth Kinetics of Rhizopus chinensis Saito BIOTECH 3273 in the Production of Microbial Rennet Using Coconut Paring Cake as Substrate. The Philippine Agricultural Scientist Vol. 95 (2): 129-138.
Maguyon, M.C.C., Alfafara, C.G., Migo, V.P. Movillon. J. L. and Rebancos, C.M. 2012. Recovery of Copper from Spent Solid Printed- Circuit-Board (PCB) Wastes of a PCB Manufacturing Facility by Two-Step Sequential Acid Extraction and Electrochemical Deposition. Journal of Environmental Science and Management15(1): 17-27 (June 2012) ISSN 0119-1144.
Alfafara, C.G., J. L. Movillon, J.M.T. Valencia, V.P. Migo, M.C.C. Maguyon and J.M. Tengco. 2007. Electrolytic removal of ammonia in simulated seawater in the presence of organic matter from shrimp feed extract. Proceedings, 36th Annual KKP-ST Convention, Nov. 6-7, 2007, Local Government Academy Training Center, Caimito St. UPLB campus, College, Laguna 4031. pp. 75-78.
Demafelis, R.B., S.A. Valencia, J.L. Movillon, R.O.A. Mallari and D. Mendoza, Jr. 2007. Hydrogen production via microbial fermentation of sugarcane bagasse: design and feasibility. 54th Annual Convention of the Phil. Sugar Technologists Association, Inc. (PHILSUTECH) held in Cebu City, Proceedings pp. 129-151.
Demafelis, R.B. and J.L. Movillon. 2008. Status and Prospects of and Issues on the Emerging Biofuel Industry in the Philippines. Philippine Institute of Chemical Engineering National Convention, Feb. 27- March 1, 2008, Cebu City, Philippines.
Demafelis, R.B., J.L. Movillon, R.B. Badayos, and B.G. Bataller. 2008. Opportunities and Challenges of Interphasing the Biofuels Program with the Sugarcane Industry. Proceedings of the 55th Annual PHILSUTECH Convention, pp. 179-186. (Philsutech Convention: Aug. 13, 2008, Cebu City).
Carascal, L., J. Camacho, Jr., A. A. Domingo, M.V. Espaldon, E.M. Mendoza and J.L.Movillon. 2009. Cross- and Trans- Disciplinary Programs: A Look at Models, Lessons and Challenges and Potentials. Proc. of the UPLB Faculty Conference held on April 28-30, 2009, Tagaytay City.
Movillon, J.L. ,R.B. Demafelis, M. M. Manalo, M.C.C. Maguyon and A.E. Parao 2009. Design, fabrication and performance evaluation of an upflow Anaerobic fixed-film reactor used in treating combined wastewater from transesterification of Jatropha curcas oil. Proceedings of the Symposium on AMDP Research and Development and Extension (RDE) Projects, June 29, 2009, pp. 161-189.
Movillon, J.L., C.S. Abrigo, Jr., M.G. Borines and J.C. Jadulos. 2009. A Correlation Study on % Trash in Cane vs. Pol Extraction and Some Recovery Parameters for Two Crop Years of a Raw Sugar Factory. Proceedings of the 56th Annual Convention of the Philippine Sugar Technologists Ass’n, Inc.(PHILSUTECH) Cebu City, Phil.
Maguyon, M.C.C. , C.G. Alfafara, V.P. MIGO, J.L. Movillon, and C.M. Rebancos. 2009. “Electrochemical Recovery of Copper from Nitric Acid Extracts of Solid Printed Circuit Board (PCB) Manufacturing Waste,” Proc. 38th KKP-ST Convention, Nov. 4-5, 2009, D.L.Umali Hall, SEARCA-SEAMEO, UPLB campus, College, Laguna 4031.
Demafelis, R.B. E. J. Del Rosario, F. R. P. Nayve, Jr., J. L. Movillon, F. B. Elegado and N. P. M. OBIAS. 2010. Optimization of Dilute Acid Pretreatment and Enzymatic Saccharification of Sugarcane Bagasse Prior to Ethanol Fermentation. Proc. 57th Annual National Convention of the Philippine Sugar Technologists Assn, Inc. (PHILSUTECH) Waterfront Hotel, Lahug , Cebu City Phil.
Barroga, S.Q., R.B. Demafelis, J.L. Movillon, F.B. Elegado, E.V. Carpio, E.J.N. Baticados. F.R.C. Icao. 2011. Development of Evaporator System for Sweet Sorghum Syrup Production. Proceedings of the 1st Sweet Sorghum Business Summit and Plantation Showcase (June 1-3, 2011 Bacolod City) pp. 55-66.
Teves, K. L. Y. and J. L. Movillon. 2012. Extraction, Analysis and Clarification of Juices from Selected High Yielding Sugarcane Varieties. Proc. 59th Annual National Convention of the Philippine Sugar Technologists Assn., Inc. Aug. 22, 2012, Waterfront Hotel, Lahug, Cebu City, Phil.
Teves, K.L.Y., E.I. Dizon, J.L. Movillon and A. M. Teves. 2013. Microbial, Physicochemical and Shelf-life Evaluation of Muscovado in Different Packaging Materials at Various Storage Time. IPCBEE VOL. 55: 56-61.
|COURSE CODE||COURSE TITLE|
|SUTC 148||Chemical Process Equipment Design|
|SUTC 171||Sugarcane By-Products Utilization and Sucrochemistry|
|SUTC 185||Sugar Laws and Economics|
|SUTC 154||Field and Factory Operations & Processes|
|SUTC 181||Waste Management in the Sugar Industry|
|ChE 191||Special Topics|
|ChE 199||Undergraduate Seminar|
|COURSE CODE||COURSE TITLE|
|ChE 284||Solid Waste Management|
Regular Member, National Research Council of the Philippines (NRCP)
Lifetime Member & Past President (2007), Kapisanang Kimika ng Pilipinas-Southern Tagalog Chapter
Lifetime Member & Auditor (2011-2014), Gamma Sigma Delta Honor Society of Agriculture
Secretary, UP Sugar Tech., Inc.
Member (1975-2011), Philippine Sugar Technologists Association Incorporated
Treasurer (2011 to present) & Board (2005 to present), UPLB Alumni Association, Incorporated
LIfetime Member, UPLB Alumni Association, Incorporated
Board (1992, 2005 to present) & President (2004 to March 2014), CEAT Alumni Association, Incorporated
Board of Advisers 2015, UPLB Chemical Engineering Association, Incorporated
Member, REACH, Inc.
College of Engineering &
UP Los Baños, College 4031