Absorpsi Gas Karbondioksid Dengan Larutan Soda Api Dalam Kolom Unggun Tetap
| Main Author: | Perpustakaan UGM, i-lib |
|---|---|
| Format: | Article NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2000
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/18926/ http://i-lib.ugm.ac.id/jurnal/download.php?dataId=1748 |
Daftar Isi:
- Absorption is one of mass transfer processes to separate a specific gas from its mixture using suitable absorbent. Absorption of CO2 from its mixture is usually done using Na OH, MEA or K2CO3 solution. In this research, a gas mixture contains CO2 was contacted with NaOH solution as absorbent in a fixed bed column. This research also studied the effect of NaOH solution flow rates at the range of 0.026 to 0.042 L/s to the absorption rates. On the other hand, operating pressure, gas flow rates, type and packing size, and CO2 initial concentration were maintained at constant value. Physico - chemical analysis was developed as a mathematics model to determine combined gas-liquid mass transfer coefficient at gas side (Kga) and reaction rate constant All coefficients were determined for absorption column design data which are accurate and suitable to be applied in industry. Experimental research result shows that determined gas-liquid mass transfer coefficient (Kga) of CO2 - NaOH absorption system were affected by liquid flow rates. The higher value of Na OH solution flow rates gave higher value of Kga. The Kga was in the range of I.1775.10-' to 3.4748.10-' (I/second) at liquid flow rate 0.026 - 0.042 L/s.. The calculated reaction rate constant was at constant value 1.002 x 104 -(mL/masecond). The volumetric gas-liquid mass transfer coefficients at gas side found from the experiments can be written in term of Sherwood and Reynolds number as follows: S,, = 4.0777 Re1-4°03 . S, "3 , with average relative error of 1.5391 %. The equation is valid for Reynolds number at the range of 13.2347 to 21.3789. Key words : Absorption, Kga, reaction rate constant