Rise of Bio-based Economy

The efficiency of using biomass as the primary feedstock for high-value-added bioproducts is to determine if biomass conversion technologies are feasible.

FREMONT, CA: Over the past 50 years, palm oil production has grown significantly. By 2022, it is anticipated to reach a value of USD 88 billion. In comparison to other vegetable oils, palm oil has three critical advantages:

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1. Superior shelf life of the finished products of up to 12 months.

2. The presence of natural antioxidants, tocopherol and tocotrienols, contributes to high oxidative stability.

3. Incurs inexpensive cost.

The demand for palm oil worldwide increased by approximately fourfold between 1995 and 2015, reaching 56.4 million metric tonnes (MT). In 2020, production reached 72 million MT and increased by a further 22 per cent. Only two countries account for about 85 per cent of the world's palm oil production, with Indonesia producing 46.8 million MT, or 58 per cent of the total, and Malaysia producing 20.9 million MT, or 26 per cent. Palm oil and biomass production are closely related to this rapidly growing business. Fresh fruit bunches are wasted in the form of empty bunches, shells, and liquid effluent in about 70 per cent of cases. Dry palm biomass output in 2013 totalled 220.5 million MT in Malaysia and Indonesia. By 2020, the government projected that mill effluent would rise to 77.2 to 121.3 million MT in Malaysia alone, while solid biomass generation would rise to 93.7 to 122.4 million MT.

The business has continued to see excellent economic and social growth, but environmental conflicts over the overproduction of biomass have brought it to the attention of the world. After the European Union (EU) and the United States (US) imposed a ban on palm oil due to concerns about deforestation and global warming, the situation became even worse. One of the practical options for achieving sustainability through the utilisation of oil palm biomass is a bio-based economy.

In many developing nations, biomass is frequently used as a fuel source for heating and cooking. As a result of the effects and repercussions of CO₂ emissions on the environment, biomass-derived fuels are being used more frequently for transportation and electricity generation in developed nations. Oil palm biomass is currently underutilised in the majority of nations that produce palm oil due to its limited applications, which are mostly caused by the low or medium technological readiness level of specific bioproduct processing, making it challenging for the industry to adapt. This is related to how scientific advancements and financial effects differ between manufacturing on a small scale in a lab and manufacturing on an industrial scale.

Oil palm biomass is separated into solid and liquid components, each of which has potential applications. It has a lignocellulosic structure that is intricate. The tight bonding between the components of lignocellulosic biomass makes direct use of it for bioproducts difficult. To solve this issue, a variety of pretreatment techniques are typically used to fractionate this biomass before further processing. Research and development (R & D) efforts by the scientific community have accelerated the development of new technologies for possible bio-products such as biochar, activated carbon, bio-oil, compost, nanocellulose, biosugar, bioelectricity, bioplastics, biogas, and bioenergy.

The paradigm shift in biomass handling today assures that it is utilised in an environmentally sound way, allowing the benefits to be fully reaped for profit, people, and the environment. This implies that mills must avoid discarding any extra biomass and must instead make use of it internally or transform it into valuable derivatives. The prospect of developing a worthwhile product proposal and introducing it to the commercial market is made possible by the extensive research that has been done on a variety of procedures employing oil palm biomass.

The composition and structural organisation of oil palm biomass have a big impact on how effectively it is converted. Oil palm biomass can be pretreated using thermal, physical, thermomechanical, chemical, and biochemical conversion techniques. The lignocellulosic fibres are typically subjected to physical and thermomechanical pretreatments. Physical pretreatment, also known as mechanical pretreatment, is a procedure that uses mechanical techniques to increase the surface area of biomass and lower its particle size, such as milling, chipping, grinding, and shredding. This processing can also diminish cellulose crystallinity, break up chemical bonds, and slightly alter the structure of biomass. Physical preparation often has no impact on the chemical makeup of natural fibres. Prior to or after chemical or biological processing, it is frequently a crucial step. Physical preparation can have certain disadvantages, though. The conversion procedures, such as enzymatic saccharification and nanocellulose synthesis, are constrained by the incapacity of physical pretreatment to remove lignin and hemicellulose. Additionally, this pretreatment needs a lot of energy, which prevents it from being widely used and raises questions about the safety of the environment.

Each oil palm biomass-based bioproduct has a unique mix of benefits and drawbacks, it can be said that no technology is preferred for all of them. The efficiency, economic viability, and environmental viability of the manufacturing of bioproducts can all be increased when multiple processes are integrated as opposed to just one. Despite the constant advancement of technology, the maker or producer must first consider the objectives, technical effectiveness, and economic viability. This is not just to make sure the business is profitable; it also needs to be able to suit the needs of the business and its target market.

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