Gaddy K.
Junior Chemical Engineering Analyst
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Gaddy K. is a Master’s student in Chemical Engineering at NTUST specializing in process simulation, kinetics, and optimization. With research and internship experience in the energy and petrochemical industries, Gaddy has developed expertise in Python, Aspen Plus, and techno-economic evaluation. At NTUST’s PSE Lab, Gaddy designed kinetic regression models and optimized styrene recovery systems using evolutionary algorithms like Genetic Algorithm and Particle Swarm Optimization, focusing on minimizing Total Annualized Cost. During an internship with PT Kilang PERTAMINA Internasional, Gaddy conducted feasibility and economic analyses for synthetic graphite and sulfuric acid production and studied bitumen market trends. Earlier at PT PERTAMINA EP CEPU, Gaddy contributed to refinery unit simulation and operational optimization projects. Educational and international experience spans Indonesia, Taiwan, and Japan, with thesis work on circular economy applications and renewable diesel production.
Experience
Researcher
National Taiwan University of Science and Technology (PSE LAB) · 2023 — PresentCreated kinetic regression models to support reactor simulation accuracy for polystyrene pyrolysis and downstream separation design. Designed and simulated styrene recovery separation systems using Aspen Plus. Applied evolutionary optimization algorithms, including Genetic Algorithm (GA) and Particle Swarm Optimization (PSO), to minimize Total Annualized Cost (TAC) and conducted comparative multi-objective optimization research with Python.Strategic Planning Intern
PT Kilang PERTAMINA Internasional (KPI) · 2022 — 2023Reviewed technical feasibility for converting green petroleum coke into synthetic graphite, contributing to value-chain diversification assessments. Evaluated the commercial viability of synthetic graphite from green petroleum coke and analyzed domestic supply and demand for refinery-grade bitumen. Assessed economic prospects for a domestic sulfuric acid production facility.Engineering Function Intern
PT PERTAMINA EP CEPU (PEPC) · 2021 — 2021Assisted with refinery process simulations in Aspen HYSYS to support identification of process inefficiencies. Performed material and energy balance calculations for distillation columns and heat exchangers. Supported process troubleshooting and improvement efforts in collaboration with senior engineers.
Skills & Expertise
Education
- Master of Science in Chemical EngineeringNational Taiwan University of Science and Technology · 2023 — Present
- Bachelor of Science in Chemical EngineeringUniversitas Indonesia · 2017 — 2022