Engr. Allan Paolo L. Almajose, PhD, LPT, RChE

Chemical Engineering Educator & Researcher
Thermodynamics | Equations of State | Process Modeling
Manila, Philippines

Allan Paolo Almajose, LPT, RChE, PhD, is a chemical engineering educator and researcher specializing in computational programming, thermodynamic modeling, and numerical simulations. His work draws on mathematical modeling and advanced numerical methods to address chemical engineering problems. He earned his PhD and MSc in Chemical Engineering from the University of the Philippines Diliman as a DOST-ERDT scholar. His research interests include equations of state, thermodynamic modeling for process systems engineering, and advanced numerical analysis.

Teaching Portfolio

Undergraduate (UST Manila)

Numerical Analysis
Mathematical Methods in Chemical Engineering
Solution Thermodynamics
Heat and Mass Transfer
Chemical Reaction Engineering
Computer Applications in Chemical Engineering
Separation Processes
Process Dynamics and Control
Chemical Engineering Thermodynamics
Mathematical Methods in Mechanical Engineering
Differential Equations
Engineering Data Analysis

Undergraduate (TIP Manila)

Chemical Engineering Thermodynamics
Heat and Mass Transfer
Separation Processes
Particulate Technology

Graduate (UST Manila)

Advanced Numerical Analysis
Advanced Mathematical Methods in Chemical Engineering
Advanced Transport Phenomena
Advanced Separation Processes

Research Interests

Mathematical modelling and computational methods in chemical engineering
Numerical steady and unsteady-state simulations of chemical engineering processes and designs
Thermodynamic equation of state modeling
Computational fluid dynamics

Research Works

Almajose, A.P.L., Hernández, A. (2026). Finite-temperature consistency enforcement of polynomial alpha functions for improved vapor pressure and enthalpy of vaporization prediction with cubic equations of state. Journal of Molecular Liquids, 460, 129891. https://doi.org/10.1016/j.molliq.2026.129891
Almajose, A. P. L., & Dalida, M. L. P. (2025). Prediction of pure and mixture thermodynamic properties and phase equilibria using an optimized equation of state – Part 2: Vapor pressure modelling and extension to mixtures. Fluid Phase Equilibria. https://doi.org/10.1016/j.fluid.2025.114345
Almajose, A. P. L., & Dalida, M. L. P. (2025). Prediction of pure and mixture thermodynamic properties and phase equilibria using an optimized equation of state – Part 1: Parameter estimation. Fluid Phase Equilibria. https://doi.org/10.1016/j.fluid.2024.114240
Almajose, A. P. L., White, A., Diego, M. C. E., Lazaro, R., & Austriaco, N. (2021). 2SIR-VD model to compare idealized COVID-19 vaccine distribution strategies in the Philippines. Philippine Journal of Science, 150(6B), 1765-1778. https://doi.org/10.56899/150.6B.13
Almajose, A. P. L., & Dalida, M. L. P. (2019). Development of a thermodynamically-consistent alpha function for the Patel-Teja-Valderrama equation of state. International Journal of Chemical Engineering and Applications, 10(2), April 2019. https://ijcea.org/vol10/739-S2011.pdf
Almajose, A. P. L., & Pestaño, L. D. B. (2016). Formulation of a non-linear decay model for data analysis and mathematical modeling. In Proceedings of the 23rd Regional Symposium on Chemical Engineering (RSCE 2016) (pp. 444-448).
Almajose, A. P. L., & Pestaño, L. D. B. (2016). Numerical simulations research for applications in binary distillation using Visual Basic for Application (VBA) programming and Ponchon-Savarit method. International Journal of Computing Communications & Instrumentation Engineering (IJCCIE), 3(2). ISSN 2349-1469, EISSN 2349-1477. http://www.iieng.org/images/proceedings_pdf/AE0516329.pdf
Almajose, A. P. L., & Pestaño, L. D. B. (2016). Numerical simulation research for chemical engineering applications in heat transfer using Visual Basic for Application (VBA) programming. In Proceedings of the 23rd Regional Symposium on Chemical Engineering (RSCE 2016) (pp. 494-499). https://doi.org/10.3316/informit.708206101997397

News

Process Dynamics and Control Apps added

August 8, 2026

The ChE Apps have been expanded with a new collection of interactive tools for process dynamics and control. New First-Order and Second-Order System simulators introduce fundamental dynamic-response concepts, while a four-part PID Water Tank Simulator series progressively explores temperature control, actuator and sensor dead time, coupled temperature and level control, process-protection logic, and realistic measurement nonidealities such as noise, hysteresis, and sampling effects. The applications feature adjustable process and controller parameters, interactive response plots, and adaptive numerical integration to provide a visual complement to the mathematical treatment of process control. The ChE Apps welcome page has also been reorganized to provide clearer navigation across the growing collection of thermodynamics, separations, and process control applications. For more information, click here.

Chemical Engineering Education Apps updated

July 17, 2026
(Modified, original: July 11, 2026)

The ChE Apps have been updated with new features and interface enhancements. Support for open steam rectification has been added to the Ponchon–Savarit and McCabe–Thiele modules, and a new Gas Absorber and Stripping application has been introduced. While the original computational code remains unchanged to ensure consistent and reliable calculations, the applications now feature graphical improvements and a modernized user interface redesigned with the assistance of AI. For more information, click here.

USTCHEX v1.3 Released

July 10, 2026

USTCHEX v1.3 is now released. New additions include VLE generators applying the Patel-Teja-Valderrama, Peng-Robinson, and Soave-Redlich-Kwong EOS. In addition, the USTChEX Thermodynamics page now shows the parameter availability for mixing rules/vapor pressure parameters for each equation of state. For more information, click here.

USTCHEX v1.2 Released

April 16, 2026

USTCHEX v1.2 is now released, introducing new thermodynamic modules and expanded EOS-based functionality for pure, mixture, and VLE calculations. This update also includes improvements to the stability of selected numerical ODE solvers, resulting in more reliable and consistent performance across a wider range of problems. For more information, click here.

University of Santo Tomas - MS ChE: Now accepting applications for AY 2026-2027

March 26, 2026

Applications are now open for the Master of Science in Chemical Engineering at UST for AY 2026–2027. Qualified applicants may avail of the DOST-ERDT Scholarship, which provides full tuition coverage, monthly stipend, learning materials allowance, and thesis support. Take the next step in your career and grow as a Thomasian Chemical Engineer.

NOW ACCEPTING MS ChE STUDENTS: UST Process Systems Engineering Group

March 26, 2026

The UST Process Systems Engineering Group is inviting motivated MS Chemical Engineering students to join its research team. Work on advanced topics in process modeling, optimization, sustainability, and thermodynamics under expert faculty mentors. ERDT scholarships are available, offering full financial support and research funding opportunities.

Contact Information

💼 Department of Chemical Engineering, Roque Ruaño Building, University of Santo Tomas, España, Manila 1608

💼 Graduate School, Thomas Aquinas Research Complex, University of Santo Tomas, España, Manila 1608

📧 alalmajose (at) ust.edu.ph

Outside Academia

Father of one. Motorcycle enthusiast. Mountain rider. Long-distance walker. Mobile and PC gamer. Currently plays Pokémon GO and Mobile Legends. Long-time fan of Red Alert 2, Yuri’s Revenge, Red Alert 3, and Counter-Strike. Former competitive Pokémon VGC player; Pokémon enthusiast. Casual anime fan. Coding and spreadsheet enthusiast. Avid follower of world history and current affairs.

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