Reaction Rate Constant Determination for the Saponification of Ethyl Acetate in Batch & Continuous Stirred Tank Reactors
Presentation by Trevor Binney
Presentation Plan
Familiarize audience with saponification
Discuss the project objectives
Overview of process and equipment used
Batch and CSTR kinetic data results


Give recommendations for future work
Answer questions the audience have
Nomenclature
CSTR- Continuous Stirred Tank Reactor
EtAc- Ethyl Acetate
NaAc- Sodium Acetate
EtOH- Ethyl Alcohol (Ethanol)
PPE- Personal Protective Equipment

What is Saponification,and what is it used for?
http://dictionary.com/ defines saponification as: A reaction in which an ester is heated with an alkali, such as sodium hydroxide, producing a free alcohol and an acid salt, especially alkaline hydrolysis of a fat or oil to make soap.
EtAc + NaOH  NaAc + EtOH
CH3COOC2H5 + NaOH  CH3COONa + C2H5OH

Project Objectives
Our team was asked to meet several goals while running saponification experiments
Develop conductivity calibration curves for the reactants used in the process. (NaOH & EtAc)
Verify feed concentration through standardization using titration
Determine the true rate constant for reaction in a batch reactor
Obtain reaction rate data for the CSTR as a function of the solution residence time


Safety Considerations
NaOH- Corrosive
EtOH & EtAc- Flammable
Standard PPE worn, as well as face shield and rubber gloves for handling dangerous chemicals.
Clean up spills and broken glass immediately

Assumptions
Conductivities of NaOH vs the rest ????
Solution inside the CSTR is well mixed
Liquid pulled from the “1 M” EtAc is 1 M


Experimental Process
Continuous Stirred Tank Reactor
Batch
Temperature Dependence Results

Arrhenius’ law: k = k0e-E/RT
Experimental vs. Theoretical Results
Difficulties Encountered During Lab
Creation and mixing of ethyl acetate solns
Attempted creation of “1 M” stock solution
Possible reagent bottle contamination
Evident through formation of unknown precipitate

CSTR temperature reading inconsistency
Inability to completely drain CSTR tanks


Recommendations For Future Work
Do research before entering the lab

References

Levenspiel, Octave. Chemical Reaction Engineering, Third Edition. USA: John Wiley & Sons, 1999.
Levenspiel, Octave. The Chemical Reactor Omnibook. Corvallis, OR: OSU Book Stores, 2002.

Questions ??
Default Design
Reaction Rate Constant Determination for the Saponification of Ethyl Acetate in Batch & Continuous Stirred Tank Reactors
Presentation by Trevor Binney
Group Members
Jay Berndt Me Eric Houchin
Presentation Plan
Familiarize audience with saponification
Discuss the project objectives
Overview of process and equipment used
Batch and CSTR kinetic data results


Give recommendations for future work
Answer questions the audience have
Nomenclature
CSTR- Continuous Stirred Tank Reactor
EtAc- Ethyl Acetate
NaAc- Sodium Acetate
EtOH- Ethyl Alcohol (Ethanol)
PPE- Personal Protective Equipment

What is Saponification,and what is it used for?
http://www.dictionary.com/ defines saponification as: A reaction in which an ester is heated with an alkali, such as sodium hydroxide, producing a free alcohol and an acid salt, especially alkaline hydrolysis of a fat or oil to make soap.
EtAc + NaOH  NaAc + EtOH
CH3COOC2H5 + NaOH  CH3COONa + C2H5OH
Saponification is primarily used in the production of soaps.
Project Objectives
Our team was asked to meet several goals while running saponification experiments
Develop conductivity calibration curves for the reactants used in the process. (NaOH & EtAc)
Verify feed concentration through standardization using titration
Determine the true rate constant for reaction in a batch reactor
Obtain reaction rate data for the CSTR as a function of the solution residence time


Safety Considerations
NaOH- Corrosive
EtOH & EtAc- Flammable
Standard PPE worn, as well as face shield and rubber gloves for handling dangerous chemicals.
Clean up spills and broken glass immediately

Assumptions
Conductivities of NaOH vs the rest ????
Solution inside the CSTR is well mixed
Liquid pulled from the “1 M” EtAc is 1 M


Experimental Process
Continuous Stirred Tank Reactor
Batch
Temperature Dependence Results

Arrhenius’ law: k = k0e-E/RT
Experimental vs. Theoretical Results
Difficulties Encountered During Lab
Creation and mixing of ethyl acetate solns
Attempted creation of “1 M” stock solution
Possible reagent bottle contamination
Evident through formation of unknown precipitate

CSTR temperature reading inconsistency
Inability to completely drain CSTR tanks


Recommendations For Future Work
Do research before entering the lab
Familiarize yourselves with analytical equipment
Begin trials with CSTR as early as possible
Break up tasks thoroughly for lab prior to running the labs

References

Levenspiel, Octave. Chemical Reaction Engineering, Third Edition. USA: John Wiley & Sons, 1999.
Levenspiel, Octave. The Chemical Reactor Omnibook. Corvallis, OR: OSU Book Stores, 2002.

Questions ??
Reaction Rate Constant Determination for the Saponification of Ethyl Acetate in Batch & Continuous Stirred Tank Reactors
Presentation by Trevor Binney
Group Members
Jay Berndt Me Eric Houchin
Operations Manager Team Leader Safety Coordinator
Presentation Plan
Familiarize audience with saponification
Discuss the project objectives
Overview of process and equipment used
Batch and CSTR kinetic data results


Give recommendations for future work
Answer questions the audience have
Nomenclature
CSTR- Continuous Stirred Tank Reactor
EtAc- Ethyl Acetate
NaAc- Sodium Acetate
EtOH- Ethyl Alcohol (Ethanol)
PPE- Personal Protective Equipment

What is Saponification,and what is it used for?
http://www.dictionary.com/ defines saponification as: A reaction in which an ester is heated with an alkali, such as sodium hydroxide, producing a free alcohol and an acid salt, especially alkaline hydrolysis of a fat or oil to make soap.
EtAc + NaOH  NaAc + EtOH
CH3COOC2H5 + NaOH  CH3COONa + C2H5OH
Saponification is primarily used in the production of soaps.
Project Objectives
Our team was asked to meet several goals while running saponification experiments
Develop conductivity calibration curves for the reactants used in the process. (NaOH & EtAc)
Verify feed concentration through standardization using titration
Determine the true rate constant for reaction in a batch reactor
Obtain reaction rate data for the CSTR as a function of the solution residence time


Safety Considerations
NaOH- Corrosive
EtOH & EtAc- Flammable
Standard PPE worn, as well as face shield and rubber gloves for handling dangerous chemicals.
Clean up spills and broken glass immediately

Assumptions
Conductivities of NaOH vs the rest ????
Solution inside the CSTR is well mixed
Liquid pulled from the “1 M” EtAc is 1 M


Experimental Process
Continuous Stirred Tank Reactor
CSTR procedure
Batch
Batch Procedure
Temperature Dependence Results

Arrhenius’ law: k = k0e-E/RT
Experimental vs. Theoretical Results
Difficulties Encountered During Lab
Creation and mixing of ethyl acetate solns
Attempted creation of “1 M” stock solution
Possible reagent bottle contamination
Evident through formation of unknown precipitate

CSTR temperature reading inconsistency
Inability to completely drain CSTR tanks


Recommendations For Future Work
Do research before entering the lab
Familiarize yourselves with analytical equipment
Begin trials with CSTR as early as possible
split up tasks for each person to do during lab prior to running the labs


References

Levenspiel, Octave. Chemical Reaction Engineering, Third Edition. USA: John Wiley & Sons, 1999.
Levenspiel, Octave. The Chemical Reactor Omnibook. Corvallis, OR: OSU Book Stores, 2002.
http://www.woodlandsinstruments.com/conductivity_values.htm

Questions ??
Reaction Rate Constant Determination for the Saponification of Ethyl Acetate in Batch & Continuous Stirred Tank Reactors
Presentation by Trevor Binney
Group Members
Jay Berndt

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