Proposal solicitation by UNIDO: Reducing bio-waste and enhancing its utilization for low-carbon rice sector production in Vietnam
In Vietnam, a significant potential has been identified for companies to produce fuels and energy from excess rice husks, either for internal use or for sale in the national or international market. This shift towards the systematic economic valorization of rice husks is crucial for boosting productivity and tackling environmental issues in Vietnam and other Asian countries.
The United Nations Industrial Development Organization (UNIDO) is seeking members of the CTCN Network to provide services related to bio-waste minimization and valorization for low carbon production in the rice sector in Vietnam. The deadline for submitting offers for these services is 31 March 2016, 17:00 Vienna, Austria time.
Rice husks can be converted into solid fuels such as loose husks, briquettes, and pellets, which are used for heating, cooking, and industrial boilers, reducing dependence on fossil fuels and lowering energy costs. Additionally, utilising rice husks in biomass power plants produces electricity and steam, while cogeneration plants combine heat and power generation from rice husks, improving overall economics.
The CTCN technical assistance aims to support the scaling-up of resource-efficient and cleaner production technologies within enterprises in the rice sector, such as Song Hau Food Company. This assistance will provide a decision-making tool for analysing and selecting optimal valorization routes of rice husks, considering factors such as fuels (solid, liquid, gas) or heat and/or power.
An approach exemplified by BSB Nanotech in Vietnam integrates science, investment, manufacturing, trading, and government partnerships to commercialize rice husk-derived products sustainably and efficiently. This model creates a robust innovation ecosystem that can be adapted for energy-focused valorization through collaboration across sectors.
Beyond fuel, rice husks can be the raw material for products such as precipitated silica, activated carbon, and biochar, diversifying revenue streams and enhancing profitability. Vietnamese experience with rice bran shows how by-products can become significant exports, suggesting that processed rice husk products (e.g., silica, activated carbon) could similarly be developed for international markets, improving trade balances and stimulating local economies.
Using agricultural residues like rice husks for energy reduces fuel import dependence and creates rural jobs in collection, processing, and plant operation, contributing to socio-economic development. Proper combustion and energy recovery from rice husks drastically reduce greenhouse gas emissions compared to open-field burning, which emits substantial CO2 and particulate matter harmful to health and climate.
This integrated approach leverages technical innovation, diversified value chains, economic viability, and sustainability goals to create a scalable and replicable business model for rice husk valorization in Vietnam's energy sector and beyond. It fosters rural development, supports climate goals, and taps into growing global demand for eco-friendly agricultural by-products.
- The United Nations Industrial Development Organization (UNIDO) is seeking members from the CTCN Network to provide services in environmental-science, specifically related to bio-waste minimization and valorization for low carbon production in the rice sector in Vietnam.
- Beyond fuel, the utilization of rice husks in industrial-science, such as the production of precipitated silica, activated carbon, and biochar, can diversify revenue streams and enhance profitability, potentially making processed rice husk products viable for export in the international finance market.
