Date of Publication

8-2014

Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Chemical Engineering

Subject Categories

Chemical Engineering

College

Gokongwei College of Engineering

Department/Unit

Chemical Engineering

Thesis Adviser

Susan Roces
Nathaniel Dugos

Defense Panel Chair

Ricardo T. Villaver

Defense Panel Member

Aristotle T. Ubando
Marylou M. Uy

Abstract/Summary

The looming threat of climate change due to global warming is driving the development of technologies geared towards mitigating the latter’s effects. Carbon capture is at the forefront of this development given that carbon dioxide accounts for the majority of greenhouse gas emissions. CO2 capture and storage presents a promising potential solution to steadily rising CO2 levels. Applications of this technology vary but the most widely studied and implemented version is post-combustion CO2 capture, primarily via absorption via amines and their derivatives. This study focuses on determining the efficacy on CO2 absorption of varying concentrations of sodium glycinate (SG) solutions at constant flow rates and temperature using a wetted wall column. The concentrations studied were 1%, 3%, and 6% at a temperature range of 10oC – 15oC, solvent flow rate of 100 mL/min and simulated flue gas flow rate of 2 L/min. The findings indicate a direct proportionality between the concentrations of the solvent used and the percentage CO2 absorbed. The mean percentage CO2 absorbed ranged from 25.6% to 85.2% while the mean overall mass transfer coefficient was from 0.0717 to 0.4878 mmol/m2skPa. Data analysis was done with Minitab® and the results showed that solvent concentration has a statistically significant effect on both parameters; specifically indicating a strong direct proportionality between them. While the study does conclude that the 6% sodium glycinate solution presented the best results, the trend of increase points to further considerable improvements with increased concentrations.


Theloomingthreatofclimatechangeduetoglobalwarmingisdrivingthe


developmentoftechnologiesgeared

towardsmitigatingthe

latter’seffects. Carbon


captureisattheforefrontofthisdevelopmentgiventhatcarbondioxideaccountsforthe majority of greenhouse gas emissions.CO2 capture and storage presents a promising potentialsolutiontosteadilyrisingCO2levels.Applicationsofthistechnologyvarybut


the

mostwidelystudied

andimplementedversionispost-combustion

CO2capture,


primarilyvia

absorption

viaamines

andtheir

derivatives.

Thisstudyfocuseson


determiningtheefficacyonCO2absorptionofvaryingconcentrationsofsodium


glycinate(SG)

solutions

atconstant

flowrates

andtemperatureusing

awettedwall


column.The concentrations studied were 1%, 3%, and 6% at a temperature range of 10oC – 15oC, solvent flow rate of 100 mL/min and simulated flue gas flow rate of 2 L/min.Thefindingsindicateadirectproportionalitybetweentheconcentrationsofthe

solventusedandthepercentageCO2absorbed. ThemeanpercentageCO2absorbed

ranged from 25.6% to 85.2% while the mean overall mass transfer coefficient was from 0.0717to0.4878mmol/m2skPa.DataanalysiswasdonewithMinitab®andtheresults


showedthat

solventconcentration

hasastatisticallysignificanteffectonboth


parameters;specificallyindicating astrongdirectproportionalitybetweenthem.While


the

studydoesconclude

thatthe6%sodiumglycinatesolutionpresentedthebest


results, the trend of increase points tofurther considerable improvements with increased concentrations.

Abstract Format

html

Language

English

Format

Electronic

Accession Number

CDTU017682

Shelf Location

Archives, The Learning Commons, 12F, Henry Sy Sr. Hall

Physical Description

1 computer optical disc ; 4 3/4 in

Keywords

Carbon sequestration

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