Vietnam is known as one of the world’s top cashew capitals. In Binh Phuoc province alone, the current cashew area is about 170,000 hectares, with an output of 243,000 tons/year. However, most of the wastes from the Vietnam cashew industry are disposed of, causing great harm to the environment. To reduce waste Currently in Vietnam has turned cashew waste into many useful products.
The Waste From Cashew Industry
Up to now, almost everyone thinks that the only cashew nuts kernel are a valuable thing of the cashew tree, this is a part of which Vietnam exports a lot. The rest such as cashew nut, cashew shell, cashew silk shell … are considered as a waste of the cashew industry which is discarded without value. Therefore, at present in Vietnam, the by-products from the cashew industry are being wasted a lot, this not only affects directly the profitability of cashew growing businesses but also such as cashew nut shells containing oil acidic, their disposal or filling will be very harmful to the soil, groundwater, and surrounding environment.
The shell of the cashew nut contains oil compounds that can cause contact dermatitis similar to poison ivy, primarily resulting from the phenolic lipids, anacardic acid, and cardanol. Due to the possible dermatitis, cashews are typically not sold in the shell to consumers. Readily and inexpensively extracted from the waste shells, cardanol is under research for its potential applications in nanomaterials and biotechnology.
@More Info here: Cashew Waste: Turning The Waste Into Profit And Protects the Environment
Cashew Shell Waste Uses For?
- Cashew Nut Shell (CNS): used as biomass fuels for clean power generation
- Cashew Nut Shell Liquid (CNSL): used as paints, laminating resins, and intermediates for the chemical industry
- Cashew Shell Residues (CNSR): used to burn the boiler with a high heating value
- Cashew Testa, Husk (testa, cashew silk shell): used as a food source for animal feed or used as biofuel, which is less polluting for the environment than CNS, CNSR, and coal.
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