Chemical · Process Engineering
Gas Absorption & Mass Transfer Design
Intermediate 4 weeks 30-50 hours
Build a small packed-column gas absorber: bubble CO2 through water with packing and measure pH change to track absorption. Analyze mass transfer vs flow rate.
Major
Chemical
Focus area
Process Engineering
Total hours
30-50 hours
What you'll need
- analog pH sensor meter kit for Arduino
- 12V DC air pump aquarium for Arduino
- Arduino Uno R3 ATmega328P microcontroller board
- clear acrylic tube column for experiments
- plastic inline flow control valve set
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Steps
- Build a packed column from the acrylic tube filled with packing material.
- Set up the air pump to push CO2-rich air (such as from a vinegar and baking soda reaction) up through the column.
- Place the pH sensor at the water outlet and log pH over time.
- Run tests at different gas flow rates using the valves.
- Calculate absorption rate and compare mass transfer at each flow rate.
- Document the column and results for your portfolio.
What to photograph for your portfolio
- Absorption column build
- pH vs time
- absorption vs flow rate
- mass transfer analysis
Resume bullet starters
Copy one, then swap in your own numbers.
Designed and built a gas absorption & mass transfer design using Mass transfer, gas-liquid operations, pH sensing
Applied chemical engineering to implement, test, and validate the system end-to-end
Skills you'll show off
Mass transfergas-liquid operationspH sensingchemical engineering