The document outlines a capstone project focused on the large-scale extraction of coffee oil from waste coffee grounds, detailing the design requirements, methods, and market potential. It demonstrates successful extraction methods yielding 8.9% coffee oil and discusses environmental benefits such as reducing fossil fuel reliance. Future work includes improving financial feasibility and developing prototypes.

1. Large-Scale Coffee Oil
Extraction
By
Sara Chergaoui
SCHOOL OF
SCIENCE AND
ENGINEERING
Capstone Project – Spring 2017
Supervised by
Dr. El Hajjaji Samir & Mr. Rachid Lghoul

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Requirements1
Embodiment Design4
Detailed Design5
Cost Estimation6
DESIGN
PROCESS
Information Search2 Information Search2 Product Concept2
Solution Concept3

3. 12/10/2017 EGR 4402 3
Requirements1
Embodiment Design4
Detailed Design5
Cost Estimation6
Information Search2 Information Search2 Product Concept2
Solution Concept3
1

4. Need Assessment
Waste Coffee Grounds should be the source of oil.
The unit should produce large quantity of coffee oil.
The unit should be able to recover most of oil and solvent.
The unit should easily be maintained and cleaned.
The unit should be robust /lasting.
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5. Market Research
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Potential Customers
Coffee Shop Owners.
Sports Arenas.
Hospitals.
Colleges.
Companies with Similar
Product

6. Market Information
Annually,
11 160 Kg of WCG are produced in Ifrane.
35 000 tons of WCG are produced in Morocco.
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In 2020 the renewable energies represent around 42% of
the global energy balance.
Renewable Energies in Morocco
Wind Power.
Solar Power.
Biomass particularly Biodiesel.

7. Objective Tree
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Design a coffee Oil
Extraction Unit
Safety Quality Convenience Economical
Solvent
almost fully
Recovered.
Pure Coffee
Oil.
User
Doesn’t
Burn
Temperature
and Pressure
Control.
Right
Solvent
Easy to
Clean.
Fast.
Affordable
Maximum
Yield

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Requirements1
Embodiment Design4
Detailed Design5
Cost Estimation6
Solution Concept3
2
Information Search2 Information Search2 Product Concept2

9. Waste Cooking Oil
Dr. Samir El Hajjaji, Nadia Mesbahi
Algae Oil
Dr. Abdelghani El Asli, Nadia Mesbahi
Chicken Fat
Safouane Hinnach
Waste Olive Oil
Aida Idrissi Belkasmi
Fish Waste
Oumaima Lamaakel
Waste Coffee Grounds
Chaimae Bouladab
Sara Chergaoui
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Spring 2014
Spring 2016
Spring 2017

10. Function Diagram
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Provide Coffee
Oil
User
Waste Coffee
Grounds
Solvent
Coffee Oil
Heating Ultrasounds Condensation

11. STEEPLE ANALYSIS
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TECHNOLOGICAL
Lab Equipment
SolidWorks
POLITICAL
Support the
ecofriendly
image of
Morocco.
ECONOMIC
Income for
coffee shops.
SOCIO-
CULTURAL
Create Job
opportunities
LEGAL
No legal
constraints.
ETHICAL
• Confidentiality.
• Reduce Phenomena
of having coffee
drinks from WCG.
ENVIRONMENTAL
Reduce the excessive
use of fossil fuels.

12. Production of Biodiesel
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EGR 4402
12
Triglycerides Alcohol Esters Glycerol
CH2
CH
CH2
O
O
O
O
CCCC
C
O
C
CCCCC
O
C
R1
R2
R3R3
R1
R2
R3
R1
R2
R3CH2 O
O
O
CH2 O
CH2
CH
R1
R2
R3
O
O
CH2 O
3 R’OH
O
C
O
O
C
O
O
C
O
R3
OR’
R2
R1
OR’
OR’
OR’
OR’
OR’
+
OH
OH
OH
CH2
CH
CH2
++

13. Waste Coffee Grounds
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EXISTING
APPLICATIONS
Clay Ceramics.
Fertilizer.
Calorific Power.
Fuel Ethanol.
Aroma.
COMPOSITION OF GREEN COFFEE
BEANS
Triglycerides

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Refluxing
To dry WCG
Mechanical ExtractionSolvent Extraction
Distillation
Filtration
Ultrasonication
Oil Extraction

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Refluxing
To dry WCG
Mechanical ExtractionSolvent Extraction
Distillation
Filtration
Ultrasonication
Oil Extraction

16. Experimental
Mechanical Extraction of Coffee Oil
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17. • Video
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18. Results and Discussion
Mechanical Extraction
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Refluxing
To dry WCG
Mechanical ExtractionSolvent Extraction
Distillation
Filtration
Ultrasonication
Oil Extraction

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Refluxing
To dry WCG
Mechanical ExtractionSolvent Extraction
Distillation
Filtration
Ultrasonication
Oil Extraction

21. Methods - Oil Extraction – Drying
WCG
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Key Factors to Successfully Dry
WCG
Repeated Cycles.
Average Temperature (60-70°C ).
2
3
1
Tested Systems to Dry WCG
1- Hot Air Tunnel.
2- Elevated Hot Air Tunnel.
3- Electric pan.

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Refluxing
To dry WCG
Mechanical ExtractionSolvent Extraction
Distillation
Filtration
Ultrasonication
Oil Extraction

23. Materials and Methods
Choice of n-Hexane
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Non-Polar
Ability to Extract
Coffee Oil Only.
Acetone
n-Hexane

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Refluxing
To dry WCG
Mechanical ExtractionSolvent Extraction
Distillation
Filtration
Ultrasonication
Oil Extraction

25. Results and Discussion
Chemical Extraction
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Yield
=
8.9 wt.%
Green OilBlack Oil

26. Experimental
Large Scale Coffee Oil Extraction
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Failure  Success 
2000 g 182 mL

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Cost Estimation6
Solution Concept3
Requirements1
Embodiment Design4
Detailed Design5
Information Search2 Information Search2 Product Concept2
3

28. 2D Design Mid-Sized Coffee Oil Extraction Machine
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Requirements1
Embodiment Design4
Detailed Design5
Cost Estimation6
Information Search2 Information Search2 Product Concept2
Solution Concept3
4

30. 3D Design Mid-Sized Coffee Oil
Extraction Machine
Main Reactor
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31. 3D Mid-Sized Coffee Oil Extraction
Machine
Distillation Tank
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-Outlet-
n-Hexane Vapor
-Inlet-
n-Hexane
+ Coffee Oil
-Outlet-
Coffee
Oil
Heating
Coffee Oil
+ n-Hexane
Distillation
Tank
Coffee
Oil

32. 3D Mid-Sized Coffee Oil Extraction
Machine -- Recovery Tanks
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Connected to a Condenser.
Collect Liquid Hexane/
Water.

33. 3D Mid-Sized Coffee Oil Extraction
Machine -- Other Components
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Gas
Bottle
Heater Ball
Valve
Vacuum
Pump
Air
Compressor
Heater

34. 3D Mid-Sized Coffee Oil Extraction
Machine. The Assembly
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37. • Video
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38. Small Scale vs Large Scale
182 mL
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42 L
2000 g 52 Kg
210 L
Waste Coffee Grounds
Coffee Oil
b20 Diesel

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Requirements1
Detailed Design5
Cost Estimation6
Information Search2 Information Search2 Product Concept2
Solution Concept3
Requirements1
Embodiment Design4
Information Search2 Information Search2 Product Concept2
Solution Concept3
5

40. Bill of Materials
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Item Name Quantity Material Source
1 Main Reactor 1 Stainless Steel
2 Distillation Tank 1 Stainless Steel
3 Recovery Tanks 2 Plastic
4 Vacuum Pump 1 N.A.
5 Air Compressor 1 N.A.
6 Electric Motor 1 N.A.
7 Gas Bottle 2 Steel
8 Heater 2 Steel
9 Condencer 1 N.A.
10 Ball Valve 9 N.A.
11 Pipe 11 Coper
12 Tube 2 Plastic

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Requirements1
Embodiment Design4
Detailed Design5
Information Search2 Information Search2 Product Concept2
Solution Concept3
6
Cost Estimation6
Requirements1
Information Search2 Information Search2 Product Concept2

42. Variable Costs
Materials: Dhs
Purchased Parts: Dhs
Labor Cost: Dhs
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Fixed Costs: Dhs
Total Cost : Dhs

43. Conclusions
The valorization of WCG cleans the environment by
reducing the large volumes of air toxins that are
produced by fossil fuels.
Throughout this project, it has been possible to extract
coffee oil with a yield of 8.9% and 69% of hexane
recovery.
3D drawing of the mid-sized coffee oil extraction
machine was drafted on SolidWorks.
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44. Future Work
Produce Biodiesel.
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Produce Coffee Soap.
Improve Financial Feasibility
Study.
Prototype of the System.

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46. • Thank you
• Bye
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