Rabina Simkhada

I’m a self-directed Direct Air Capture (DAC) and carbon capture researcher with 6 years of independent experimental research, focused on turning adsorption and desorption science into practical performance.

My core strength is adsorption/desorption process design and solid amine sorbent chemistry—covering synthesis, breakthrough curve analysis, and experimental data analysis. I work independently, but I thrive in research environments where experiments and modeling can continuously inform each other.

In my work, I’ve accomplished covalently-bound amine composite sorbents with 17.5 mmol/g active amine loading and about 4× improved thermal stability versus physically impregnated systems. I’ve also executed structured adsorption/desorption protocols that reached 85% CO₂ capture efficiency, using NTU–HTU mass transfer modeling and a three-stage measurement approach, producing a mass transfer zone width of 1.05 m.

I also focus on realistic operational challenges, building multi-contaminant sorbent degradation models for SOx, NOx, O₂, and fly ash exposure. And I’ve optimized test bench performance by reducing system pressure drop by 81% through redesigning freeze-cast aligned microchannel architecture (void fraction ε = 0.70 vs ε = 0.40), guided by validated Ergun equation and Reynolds number analysis.