![Gas Absorption Experiment,[object Object],By Diego Paranhos,[object Object],Lab Partners: ,[object Object],Tom Henderson & Anhtuyet Lam,[object Object]](https://image.slidesharecdn.com/gasabsorptionexperiment-12501341025418-phpapp03/75/gas-absorption-laboratory-experiment-1-2048.jpg?cb=1666704022)
![Outline,[object Object],[object Object]](https://image.slidesharecdn.com/gasabsorptionexperiment-12501341025418-phpapp03/75/gas-absorption-laboratory-experiment-2-2048.jpg?cb=1666704022)
![Questions & Answers,[object Object]](https://image.slidesharecdn.com/gasabsorptionexperiment-12501341025418-phpapp03/75/gas-absorption-laboratory-experiment-11-2048.jpg?cb=1666704022)
![On overall mass transfer coefficient (KLa) and absorption rate (Ra),[object Object]](https://image.slidesharecdn.com/gasabsorptionexperiment-12501341025418-phpapp03/75/gas-absorption-laboratory-experiment-17-2048.jpg?cb=1666704022)
![Theory,[object Object],C* = Liquid Phase Concentration of CO2 in equilibrium with the gas,[object Object],C = Liquid Concentration of CO2 [mol/L],[object Object]](https://image.slidesharecdn.com/gasabsorptionexperiment-12501341025418-phpapp03/75/gas-absorption-laboratory-experiment-18-2048.jpg?cb=1666704022)
![Theory,[object Object],Enhancement,[object Object]](https://image.slidesharecdn.com/gasabsorptionexperiment-12501341025418-phpapp03/75/gas-absorption-laboratory-experiment-19-2048.jpg?cb=1666704022)
![EquipmentGas Absorption System,[object Object]](https://image.slidesharecdn.com/gasabsorptionexperiment-12501341025418-phpapp03/75/gas-absorption-laboratory-experiment-20-2048.jpg?cb=1666704022)
![Schematic,[object Object]](https://image.slidesharecdn.com/gasabsorptionexperiment-12501341025418-phpapp03/75/gas-absorption-laboratory-experiment-21-2048.jpg?cb=1666704022)
![Equipment,[object Object],Titration System,[object Object]](https://image.slidesharecdn.com/gasabsorptionexperiment-12501341025418-phpapp03/75/gas-absorption-laboratory-experiment-22-2048.jpg?cb=1666704022)
![Schematic,[object Object]](https://image.slidesharecdn.com/gasabsorptionexperiment-12501341025418-phpapp03/75/gas-absorption-laboratory-experiment-23-2048.jpg?cb=1666704022)
![Procedure,[object Object],Part I – Physical Gas Absorption (Using water only),[object Object],Fill the bucket with water.,[object Object],Turn the apparatus on, the pump, CO2and air supply valves.,[object Object],Using the control panel, make the flowrate of CO2 to air 50/50.,[object Object],Vary the water flowrate: 4 L/min, 8 L/min, and 12 L/min.,[object Object],Prepare a 600 mL beaker with 5cc of NaOH (0.1M) using a pipette and 3-5 drops of phenolphthalein. Weigh it.,[object Object],After each flowrate, collect effluent from bottom, using the beaker. Enough to make phenolphthalein/NaOH/effluent solution light pink. Reweigh it.,[object Object],Take the beaker with the effluent to the titrator. Set to titrate to pH 8.5. Then again to pH 4.0,[object Object],Repeat steps 3 though 7for CO2/air flowrates of 75/25 and 25/75 varying the water feed flowrate. (Total of 9 runs),[object Object]](https://image.slidesharecdn.com/gasabsorptionexperiment-12501341025418-phpapp03/75/gas-absorption-laboratory-experiment-24-2048.jpg?cb=1666704022)
![Procedure,[object Object],Part II A – Chemical Gas Absorption ,[object Object],(Using NaOH aqueous solution),[object Object],Using 2 buckets; pour 16 liters of water in one and 8 liters in the other.,[object Object],Add 160 grams of NaOH to the 16-liter bucket and 80 grams of NaOH to the 8-liter bucket.,[object Object],Stir both buckets for a uniform concentration.,[object Object],Pour some of the 16 liters into the 8 liters, and vice-versa, for an equal concentration in both buckets.,[object Object],Pour this NaOH/water solution into the bucket behind the apparatus. ,[object Object],Repeat procedure from Part I except do not add 5cc of NaOH to solution with phenolphthalein. Just the phenolphthalein is okay.,[object Object]](https://image.slidesharecdn.com/gasabsorptionexperiment-12501341025418-phpapp03/75/gas-absorption-laboratory-experiment-25-2048.jpg?cb=1666704022)
![Procedure,[object Object],Part II B – Chemical Gas Absorption ,[object Object],(Using NaOH aqueous solution with Heater),[object Object],Using the remaining NaOH solution from Part II A, turn the pump off.,[object Object],Turn the heater on.,[object Object],Wait until the temperature reaches 50°C.,[object Object],Once it does, turn pump on, and repeat procedure for only 50/50 CO2 and air.,[object Object]](https://image.slidesharecdn.com/gasabsorptionexperiment-12501341025418-phpapp03/75/gas-absorption-laboratory-experiment-26-2048.jpg?cb=1666704022)
![Calculations,[object Object]](https://image.slidesharecdn.com/gasabsorptionexperiment-12501341025418-phpapp03/75/gas-absorption-laboratory-experiment-27-2048.jpg?cb=1666704022)
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Gas Absorption Laboratory Experiment
- 3. Theory
- 5. Procedure
- 6. Calculations
- 8. Conclusion
- 10. References
- 12. Composition
- 13. Liquid Flow Rate
- 14. Gas Flow Rate
- 15. Chemical and Physical Absorption
- 16. Temperature
- 37. Absorption better when using higher flowrates of liquid and higher concentration of CO2.
- 38. Enhancement always greater than 1.
- 40. Hard to access bucket with liquid
- 41. Move to front would have given easier access
- 42. Time constraint