DEHYDRATION OF ETHANOL WATER SOLUTION USING ACTIVATED STARCH

ABSTRACT

This project research work was based on Dehydration of Ethanol Water Solution Using Activated Starch. The extracted starch obtained was of whistler method. The starch obtained from potato was weighed with the use of a weighing balance, 0.1gram of activated starch weighted for eight times. The 0.1 gram of activated starch was put in a different test tube. About 20mg of ethanol was measured and added to the 0.1gram of activated starch, with two different concentrations of 10% and 50% respectively which was put on test tube track and then placed on the water bath and was allowed to run for 30 minutes and 60 minutes respectively.

The result obtained from the experiment was seen to be more palatable with the use of potatoes starch as the major absorbent. It was observed that the lower concentration of ethanol-water mixture led to decrease in the refractive index of the water-ethanol mixture. The dehydration method employed was of a huge advantage due to its effectiveness and ability to remove water from the mixture of ethanol and water. Due to the fact that the intermediate product of the activated starch were useful in the dehydration process, a good quality of ethanol was obtained which gave rise to the relevance of potato being put into use in terms of starch generation for industrial purpose.

The research work as regards the materials used and the method of dehydration being employed, it was compared relatively to be more viable and feasible with other methods of dehydration. The amount put together to achieve the successful dehydration and anhydrous ethanol as quality product was estimated to be relatively cheaper compared to the other methods of dehydration

CHAPTER ONE

1.0 Introduction

1.1 Background of the Study

Complication of a process for ethanol dehydration by fractional distillation arrives when the solution is in the vicinity of its azeotropic point (95.6wt% ethanol) where both compounds are not separable by fractional distillation. Azeotropic distillation is to bring ethanol concentration up to an anhydrous level is an energy intensive and required a use of toxic organic entraners such as benzene. As a result anhydrous ethanol is normally produced by distilling the solution until ethanol concentration of about 75 -90wt% is achieved and other techniques are employed after that remove water to a minusel level.

One of the energy efficient techniques widely used for dehydration of ethanol is adsorption and starchy and cellulose biomass are among several adsorbent that have been accepted that ethanol dehydration by adsorption requires less energy than the conventional azeotropic distillation it is also less energy consuming than adsorption using other adsorbent. For example the total energy consumed in dehydration of ethanol using cellulose was reported to be 2,873 kj/kg ethanol while the adsorption using calcium oxide (CaO) was 3,669kj/kg ethanol. Another attractive advantage of using biomass derived adsorbent is that when regeneration is not practical the spent adsorbent could be used as a feed stock for fermentation either for ethanol or biomass production. Deposition of starchy and cellulosic and environmental friendly due to their readily biodegradability.

Ability of starch and cellulose to adsorb water is a result of interaction in form of hydrogen bonding between free hydroxyl groups (-OH) on their glucose units and the water molecules as depicted. Water is by nature more polar than organic compounds such as alcohols. Therefore it interacts with hydroxyl groups of glucose containing adsorbent with higher strength and faster rate. Consequently, aqueous alcohol solution passing through bed of starchy or cellulose material would come out with lower concentration of water in the solution.

1.2 Objectives of the Study

The aim or objectives of the research work on the dehydration of ethanol water solution using activated starch is determined as follows:

To identify polysaccharide compounds of starch materials which have the ability of adoption due to the removal of water by contact of the adsorbent either with vapor or liquid of ethanol solutions.
To determine the adsorption of water from liquid solution 85 95%v/v ethanol onto starchy material.
To determine the complication of a process for ethanol dehydration by the activated starch.
To determine investigated water and adsorption efficiency of adsorbent prepared by the activated starch.

1.3 Statement of Problems

The problems which arise as a result of high cost of importation and harsh economic situation in the country, it becomes imperative to search for local raw materials to replace the imported ethanol water solution by starch which yield high quality of activated starch which yield high quality of activated starch for the dehydration of ethanol solution.

1.4 Justification

At present, there is no commercial dehydration of ethanol water solution from activated starch in Nigeria. Huge amount of money are being spent to import ethanol for medical, pharmaceutical research and industries. It will be economically useful if government imitate a move towards the direction of dehydration ethanol from our local raw material such as starch.

…

CHAPTER TWO

2.0 Literature Review

2.1 Introduction

The review of relevant literature is the main topic of this chapter. A literature review covers theoretical and methodological contributions to a certain issue in addition to the state of knowledge at the time of writing. It provides information about the state of the art in relation to the subject you are writing about. It examines the body of work on the chosen subject. The literature evaluation in this study comprises the …

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Preliminary Pages,
Chapter 1-5,
References and Appendix.

TABLE OF CONTENTS
PRELIMINARY PAGES

Title page
Approval page
Dedication
Acknowledgement
Table of Contents
Abstract

CHAPTER ONE

1.0 Introduction

1.1 Background of the Study

1.2 Objectives of the study

1.3 Statement of Problems

1.4 Justification

1.5 Limitation of study

CHAPTER TWO

2.0 Literature Review

2.1 History of Ethanol

2.2 Gelatinization and Saccharification of Starch

2.3 Enzymatic Hydrolytic Starch

2.4 Ethanol Dehydration Through Stimulation

2.5 Adsorption of Ethanol

2.6 Activation of Starch

2.7 Properties of Activation Starch

2.8 Activated Starch

2.9 Methods of Activated Starch

CHAPTER THREE

3.0 Methodology

3.1 Apparatus / Materials Used

3.2 Method of Starch Extraction

3.3 Flour Extraction

3.4 Activation or Modification of Starch Sample

3.5 Experimental Procedure

CHAPTER FOUR

4.0 Result Analysis

4.1 The Results

4.2 Calculation for the Refractive Index

CHAPTER FIVE

5.0 Discussion, Conclusion, and Recommendation

5.1 Discussion

5.2 Conclusion

5.3 Recommendation

REFERENCES

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