ATTENTION:
BEFORE YOU READ THE
PROJECT WORK, PLEASE READ THE INFORMATION BELOW. THANK YOU!
TO GET THE FULL
PROJECT FOR THE TOPIC BELOW PLEASE CALL:
08068231953,
08168759420
TO GET MORE PROJECT
TOPICS IN YOUR DEPARTMENT, PLEASE VISIT:
EXTRACTION OF OIL FROM
A LOCAL SEED (GROUNDNUT SEED) AND CHARACTERIZATION
ABSTRACT
This project “Extraction of oil from a
local seed (groundnut oil) and Characterization” was carried out using ten cups
of groundnut seeds that was purchased from a local market in Enugu
metropolis. The oil these seeds were in Enugu using solvent extraction
method. Two different solvents were used in the extraction namely: Ethane
and order to compare their yield, physical and chemical properties.
The extraction was carried out using
32og of size-reduced groundnut with 100ml of 17-hexane while 1.5litres a 15ooml
of ethanol was used on 480g of size reduced groundnut seeds. Ta the end
of the extraction operation, the amount of oil-extracted using17-hexane was
observed to be far more greater than the amount of oil extracted using ethanol.
The chemical and physical properties of
the oil were determined by analysis of the oil. The physical appearance
of 17- hexane extract is light yellow in colour this; true colour of groundnut
oil while that the ethanol extract has a light bown colour. The colour of
ethanol on pigments in the size-reduced groundnut seed.
From the result obtained, it was
deduced that 17-hexane remains the best solvent for oil extraction while
ethanol is not a good solvent for oil extraction.
The physical and chemical constants/
properties determined were:
PHYSICAL PROPERTIES:
a)
Solidification point.
b)
Melting point
c)
Specific gravity
d)
Moisture content.
CHEMICAL PROPERTIES
a)
Acid value
b)
Saponification value
c)
Peroxide value
d)
Iodine value
Form the analysis camied out on
the extracted oil, the results obtained shows that the extracted oil is a pure
groundnut oil because the iodine value which shows the purity of an oil
is close to literature value. The iodine value of he oil extracted is
79.95 while the literature value (standard value) rangers from 94-102.
TABLE OF CONTENT
CHAPTER ONE.
1.1
INTRODUCTION
1.2
SCOPE / OBJECTIVES OF THE PROJECT.
CHAPTER TWO
2.0
LITERATURE REVIEW
2.1
GROUNDNUT SEED
2.2
ADAPTATION
2.3
DISEASES OF GROUNDNUT
2.4
EXTRACTION
2.5
METHODS OF OIL EXTRACTION
2.6
RENDERING
2.7
MECHANICAL EXTRESSION
2.8
SOLVENT EXTRACTION
2.9
GROUNDNUT OIL EXTRACTION
2.9.1
FACTORS AFFECTING RATE OF LEACHING
2.9.2
FACTORS GOVERNING CHOICE OF SOLVENT
2.9.3
LEACHING OF VEGETABLE SEEDS
2.9.4
THEORIES OF SOLVET EXTRACTIONS
2.9.5
UNDISSOLVED OIL THEORY
2.9.6
PHYSICAL PROPERTIES OF VEGETABLE OIL
2.9.7
CHARACTERIZATION OF OILS
2.9.8
SAPONIFICATION VALUE
2.9.9
IODINE VALUE
CHAPTER THREE
3.0
EXPERIMENTAL METHODS
3.1
PREPARATION OF THE SEEDS
3.2
PARTICLE SIZE REDUCTION
3.3
EXTRACTION AND DISTILLATION
3.4
USES OF SOXLILET EXTRACTOR
3.5
DISTILLATION
3.6
SOLIDIFICATION POINT
3.7
MELTING POINT
3.8
SPECIFIC GRAVITY
3.9
DETERMINATION OF MOISTURE CONTENT
3.10
DETERMINATION OF CHEMICAL PROPETIES
3.11
DETERMINATION OF ACID VALUE
3.12
SAPONIFICATION VALUE
3.13
PEOXIDE VALUE
3.14
IODINE VALUE
CHAPTER FOUR
4.0
EXPERIMENTAL RESULTS
CHAPTER FIVE
5.0
DISCUSSION
CHAPTER SIX
6.1
CONCLUSION / RECOMMENDATION
6.2
REFERENCES
6.3
APPENDICES.
CHAPTER ONE
INTRODUCTION
Extraction other-wise called leaching
is the preferential solution of one or more constituents of a solid mixture by
contact with a liquid solvent. This unit operation, one of the oldest in
the chemical industries, here been given many names, depending to some extent
upon the technique used for carrying it out extraction of oil form groundnut
seeds can be carried out using any of the two solid-liquid extraction methods namely:
mechanical extraction method or the used of solvent other- wise called
mass-transfer method. The yield of the second method is higher but contains
more impurities than the first method and it requires another unit operation
(distillation) in purity it better.
The success of an extraction and the
technique to be used will vary frequently depending upon any prior treatment
which may be given to he solid. In some instance small particles of the
soluble material are completely surrounded by a matrix of insoluble
matter. The solvent must then diffuse into the mass, and the resulting
solution must diffuse out before a separation can result. Crushing and
grinding of such solids will greatly alliterate the leaching action, since then
the soluble portions are made more accessible to the solvent.
Seeds like groundnut seeds and other
vegetable seeds are cellular in structure, and the natural products to be
leached form these material are usually found inside the cells. if the cell
walls remain intact upon exposure to a suitable solvent, the leaching involves
osmotic passage of the solute through the cell walls. This may be slow,
but in is impractical and sometime undesirable to grind the material small
enough to release the contents of individual cells.
Oil constitutes a well-defined class of
neutral organic substance, which are essential constituents of all forms of
plant and animal life. They are soluble in other and organic solvents but
not in water. Commercial oils are however from a relatively few member of
the plant and animal kingdom available forms. They are primary a product of
agriculture although these is also a considerably production from uncultivated
tropical plants and from mature animals. Oil can be grouped into edible and
non-edible depending on the amount of unspecified matters and impurities. Owing
to the fact that the use of oil from crop seed as a major raw materials has
increased in recent yeses their has been the need for extended and numerous
research works based on the extraction of these oil. Form its seeds as
economically efficiently as possible.
The only possible way of obtaining
large quality of oil from oil being vegetable or plant materials is by
extraction and this could best be achieve using leading process. This process
can be accomplished by a variety of ways but as might be expected its
efficiency depends to an extant an obtaining intimate contact between the
liquid solvent and the solid containing he solute. Leaching reduces the
oil content in the residue to about 0.5-1.5 percent as compared.
With about 5-9 percent by mechanical
process. The types of solvent available for leaching include 17-hexane,
petroleum ether benzene ethyl ether etc which are high petroleum
fractions. The choice of a solvent for extraction is a function of its
volatility and relative volatility for easy separation by distillation.
Groundnut oil is used primary in homes
for cooking and also as an industrial raw material for other usefully products.
SCOPE AIMS/
OBJECTIVES FO THE PROJECT
The scope of this research project is
to extract oil from groundnut seeds and compare the yields obtained using
different solvents and to standard.
Also the project is aimed at
characterizing the extracted oil by determining the physical and chemical
properties of the oil.
AFFILIATE LINKS:
Comments
Post a Comment