THE BLEACHING OF PALM OIL USING ACTIVATED CHARCOAL ABSTRACT This project work is on the bleaching of palm oil using activated charcoal. The charcoal used for this work was made from pieces of animal bone by carbonization method. It was then activated into two different samples. Firstly, the basic sample was activated using anaphoric acid (H2 s04) while the other was activated by just heating as a control for the experiment; both at a constant temperature of 5000c and approximate time of 2hours. They were both size reduced into fines and sieved into particle 3ye of 150um portion of the crude palm oil was degummed and neutralized for bleaching. Each interval of bleaching with both the acid activated and the ordinary activated charcoal was 8mins and temperature of 1500c over a hot plate, and subsequent filtration of the solution. A spectrophotometer was used to measure the absorbance of the oils (crude and bleached) at selected wave length of 480Um. This was converted as the degree of colour reduction expressed in percentages. Results obtained showed that optimum quantity of the charcoal for bleaching is 5% by weight, of the oil, which gives a percentage colour reduction as 97. 14% for the acid activated and 93.57% for the calcinated sample. Also, the characterization of both the original oil and the bleaching oil showed that the later has appreciable properties. Hence colour reduction was observable by naked eyes. TABLE OF CONTENTS Chapter one 1.0 Introduction 1.1 Preamble 1.2 Objective 1.3 Scope of study 2.0 Literature Review 2.1.0 Chemical composition of palm oil 2.1.1 Carotenes 2.1.2 Phosphatides 2.1.3 Gums 2.1.4 Compositions and standards of palm oil 2.2.0 Spoilage factors of palm oil 2.2.1 Preventive measures 2.2.2 Inhibitors 2.3.0 Refining of creebe palm oil 2.3.1 Degumming 2.3.2 Neutralization 2.3.3 Bleaching 2.3.4 Deodorization 2.3.5 Chemical bleaching method 2.3.6 Accretion bleaching 2.3.7 Bleaching by adsorption 2.4.0 Adsorption 2.4.1 Uses of adsorption 2.5.2 Physical adsorption 2.5.2 Chemisorptions 2.6.0 Adsorbents 2.6.1 Bauxite 2.6.2 Decolourising carbons 2.6.3 Gas-adsorbent carbon 2.6.4 Molecular screening activated carbon 2.6.5 Synthetic polymeric adsorbents 2.6.6 Silica Gel 2.6.7 Alumna 2.6.8 Bone char. 2.7.0 Charcoal 2.7.1 Properties of charcoal 2.7.2 Activated charcoal 2.7.3 Methods of charcoal activation 2.7.4 Properties of activated charcoal 2.7.5 Chemical properties of activated charcoal 2.7.6 Physical properties of activated charcoal 2.7.7 Uses of activated charcoal CHAPTER THREE 3.0 Experimental method 3.1.0 Materials 3.1.1 Material treatment 3.2.0 Charcoal activation using acid 3.2.1 Charcoal activation by heat treatment 3.3.0 Degumming of Palm oil 3.3.1 Neutralization 3.4.0 Bleaching of palm oil 3.4.1 Experimental set-up 3.5.0 Characterization of palm oil 3.5.1 Specific gravity 3.5.2 Iodine value 3.5.3 Free fatty acid 3.5.4 Saponification value 3.5.5 Esterification value 3.5.6 Process flow chart CHAPTER FOUR 4.0 Experimental result 4.1.0 Effect of bleaching sample 4.2.0 Effect of temperature on bleaching 4.3.0 Colour observation at absorbance 4.4.0 Concise table for characterization CHAPTER FIVE 5.0 Discussion CHAPTER SIX 6.0 Conclusion CHAPTER SEVEN 7.0 Recommendation References Table of nomenclature Appendices CHAPTER ONE INTRODUCTION 1.1 PREAMBLE Palm oil is one of the various types of vegetable oils, belonging to the group called liquids, because of its fatty acids content. The majority of the fats contains some colouring matter either as a natural constituent or discoloration produced during the processing. Natural pigments present in vegetable oils are mainly the carotenoid, giving yellow and red colours, and the chlorophylls which give green colours. Colour deterioration can also take place during the extraction process, especially in the local method of extraction used in the most parts of the Eastern region in Nigeria. Removal or reduction of colours and other components, otherwise called ‘Bleaching” is necessary not only because a pale-coloured fat has an appeal of ‘purity’ but also because the colours of the fat can influence the appearance of prepared food and even more importantly, the pigment present may affect the flavour and stability of the fats and food made from it. The decolouration (bleaching) could be achieved by chemical treatment, heat treatment and adsorption methods. The most effective and widely used being the later. Thus, in this research project, bleaching by adsorption is carred out using an “Activated charcoal” (an adsorbent), a kind of active carbon, to substitute the use of local clays and the imported ‘Fuller’s Earth – in Palm Oil bleaching, which are rather expensive. The charcoal can be produced from different sources as from, coal, wood, bone, coconut shell, etc. It would be verified the most suitable form and type of charcoal for effective bleaching and the most favourable condition at which the “activated charcoal could be used, which in them affects the bleach ability’ of the Palm oil itself. 1.2 OBJECTIVE The objective / aim of this research project is to verify the effectiveness of ‘Activated charcoal’ in the bleaching of palm oil. It will also expose the improvement in the use of local raw material (charcoal) in a chemical process (bleaching), in lien of the imported fuller’s Earth or other adsorbents which more expensive. 1.3 SCORE OF THE STUDY Basically, this, study dwells on the colours reduction of Palm oil, using an Activated charcoal as an adsorbent (bleaching agent). The major raw materials, Palm oil and charcoal were locally sourced, and information as regards the process were obtained form the literary and other resourceful materials (texts) that treats ‘Adsorption’ as a chemical process.
THE BLEACHING OF PALM OIL USING ACTIVATED CHARCOAL
ABSTRACT This project work is on the bleaching of palm oil using activated charcoal. The charcoal used for this work was made from pieces of animal bone by carbonization method. It was then activated into two different samples. Firstly, the basic sample was activated using anaphoric acid (H2 s04) while the other was activated by just heating as a... Continue Reading
ABSTRACT This project was carried using activated local form local corporation Enugu, and the rate of bleaching of palm oil using spectrophotometer by measuring the absorbance. It was also performed to check the suitability of local as a bleaching agent for palm oil. The local from local corporation... Continue Reading
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ABSTRACT The adsorptive removal of the colour pigment (due to high content of carotenoids) from palm oil using ortho-phosphoric acid activated kaolin clay was investigated in this research. The clay was activated at different acid concentrations to improve its adsorptive... Continue Reading
ABSTRACT The adsorptive removal of the colour pigment (due to high content of carotenoids) from palm oil using ortho-phosphoric acid activated kaolin clay was investigated in this research. The clay was activated at different acid concentrations to improve its adsorptive... Continue Reading
ABSTRACT The composition and bleaching properties of Nteje clay in comparison with two commercially available adsorbents (activated carbon and fuller’s earth) were investigated to study its competence for use as an alternative to high cost imported adsorbents. The modification of the raw clay sample was carried out by acid activation to enhance... Continue Reading
The introduction Methodology Materials needed Characteristics of bacillus that can produce amylase isolated from Palm kernel waste water in the production of local palm oil Characteristics of bacillus specie that have the potential to bioflocculate isolated from Palm kernel waste water in the production of local palm oil Aim and objectives of... Continue Reading
The introduction Methodology Materials needed Characteristics of bacillus that can produce amylase isolated from Palm kernel waste water in the production of local palm oil Characteristics of bacillus specie that have the potential to bioflocculate isolated from Palm kernel waste water in the production of local palm oil Aim and objectives of the... Continue Reading
ABSTRACT An experimental evaluation of the performance of a charcoal stove designed to reduce human labour and health hazards associated with frying in open fire was carried out. The channel- type metallic stove was lagged with 2.54 mm thick glass wool. The charcoal grate is 160 mm from the floor and has 44 holes of 12 mm diameter each to serve as... Continue Reading
ABSTRACT A study of the effect of biochar (charcoal) on microbial colonization and heavy metal concentration in polluted soil was conducted for eighth (8) weeks between September to October, during the cropping season of 2018, at the faculty of Agriculture, Kogi State University, Anyigba. The aim of the study was to determine the effect of biochar... Continue Reading