The cashew nuts are heavily consumed as snacks all over the world. This dry fruit has many health benefits but do you know that even the shell of the cashew nuts is very beneficial and serves a great purpose? Yes, you heard that right! The shell of the cashew nuts which is discarded as waste by the food manufacturing industries is now revolutionized and used as a byproduct by creating cashew deoiled cake and cashew nut shell liquid. The cashew shell goes through the processing to extract both of these byproducts. In this post, we will discuss both these byproducts and how safe they are as a source of energy.
Cashew De-oiled Cake (CDC):
The cashew de-oiled cake is extracted from the shell. A rich source of energy that has a high calorific value. It is used as fuel, fertilizers, and other industrial applications.
Cashew Nut Shell Liquid (CNSL):
It is a dark brown liquid that is extracted from the shell of the cashew nuts. The 15%- 25% of the shell consists of the liquid. The process involves using hot oil, solvent extraction, vacuum distillation, and superficial fluid process.
What is Wrong with these Cashew Byproducts?
Some of the factors are impacting the operations when using cashew byproducts as fuels.
Cashew Shell contains high carbon content. When burnt alone, it produces black smoke which can irritate to eyes and can be intoxicating when inhaled.
All three byproducts contain a high amount of phenol, thus affecting the furnace’s refractory linings.
These byproducts contain a high amount of anacardic acid. Therefore, direct combustion could affect the system’s safety and generate toxic fumes.
CNSL is acidic, so handling DOC becomes difficult for the operating team. The workers have reported itching/burning sensation in the hands and skin peeling off with consistent exposure.
Many of the ships that have been using cashew by-products as fuels have reported issues like engine sludging, injector failure, or filter clogging which means that it is destroying the components of the engine.
Key Strategies to Enhance the Impact Of Cashew Byproducts
The impact of the cashew byproducts can be improved by focusing on utilizing them for value-added applications creating biofuel from the cashew shell liquid (CNSL).
Make Biofuel:
Convert CNSL into bio-diesel or other renewal fuels to make it eco-friendly and reduce the dependence on other fuels.
For High- quality Raw Materials:
Using the cashew shell liquid (CNSL) to improve the flexibility, gloss, and mechanical strength of any product. It can be used for resins, paints, and adhesives.
Construction Materials:
Incorporate cashew shell powder as a bio-additive in concrete or other construction materials to improve the substantially and also enhance the properties like insulation.
Agricultural Applications:
It can also be used as an essential agricultural tool. Using as a soil amendment, the cashew shell powder can improve the structure of soil and its nutrient content.
Final Words…
So, you now know that the cashew by-products are not safe to use and can have a negative impact. However, apart from being used as a source of energy, it has other benefits. It can be used in other ways like for construction industries and agricultural areas for high-quality output.
You can invest in high-quality byproducts from the best manufacturers like R.K. Agro Processing. They offer the organic form extracted by the cold-press method. It can improve the quality of your products and improve your business if used efficiently.
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