DEVELOPMENT OF ALKYL ESTER HETEROGENEOUS CATALYST FROM BIOPOLYMER (CASSAVA AND YAM STARCH) A NOVEL APPROACH JOHN NOSAKHARE ENG/2332300004
CHAPTER ONE
INTRODUCTION
1.1 Background of the Study
The development of sustainable energy solutions is a pressing concern in light of global climate
change and the depletion of fossil fuel reserves. Biodiesel, a renewable and environmentally
friendly fuel, has emerged as a viable alternative to conventional diesel. Biodiesel is composed
of alkyl esters derived from the transesterification of triglycerides (oils or fats) with alcohol,
typically methanol or ethanol, in the presence of a catalyst. While biodiesel offers significant
environmental benefits, including reduced greenhouse gas emissions and biodegradability,
challenges such as production costs and the sourcing of efficient catalysts persist (Atadashi et al.,
2018).
Catalysts play a pivotal role in the biodiesel production process, influencing reaction efficiency
and product yield. Conventional homogeneous catalysts, such as sodium hydroxide and
potassium hydroxide, have been widely used due to their high activity. However, they pose
several drawbacks, including corrosion, challenges in separating the catalyst from the product,
and environmental concerns associated with wastewater generation (Lam & Lee, 2018). To
address these issues, researchers are increasingly turning to heterogeneous catalysts, which are
reusable, more environmentally friendly, and facilitate easier product separation.
Biopolymers derived from agricultural products, particularly starches, offer a promising avenue
for the development of novel heterogeneous catalysts. Starches, abundant in crops such as
cassava and yam, are polysaccharides composed of amylose and amylopectin, which can be
modified to enhance their catalytic properties. These materials are not only renewable and
biodegradable but also exhibit high thermal stability and versatility for chemical modifications
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