In Vietnam, there are large amount of renewable energy (RE) resources, which are distributed throughout the country. Energy from biogas is estimated of about 10 billion cubic meters (m³), with resources that can be collected from landfills, animal excrement, and agricultural residue. The ten largest Vietnamese pig producers, in 2015, can produce 308.789.465 kilowatts of electricity per day from 158,904 m³ of animal waste.
Biogas from fish farming is not yet technically feasible, because fishpond sludge can only be collected after harvest. With an Intensive Pond Aquaculture (IPA) system with a sludge collector set up at the quiescent zone, however, fish waste can be easily collected daily, even hourly, when the biomass became large in the raceway. These technical properties of IPA allow the consideration of producing biogas from fishpond culture.
Benefits from fish waste biogas include:
- Methane from fish waste biogas can be used to run the air blower in the IPA system, saving electricity cost
- Methane from fish waste biogas can be used to warm up water at the inlet of the raceway. This would greatly help farmers in Northern Vietnam, where there was six months of winter season of no culture due to low water temperature.
Today, Vietnam faces several natural resource issues (water, energy) as well as environmental issues in aquaculture (fish pond effluent treatment), which hold up development in the aquaculture industry. USSEC Vietnam is focusing on IPA with biogas technology to promote profitable and sustainable pond aquaculture production. The objectives are to push the use of commercial feed in high tech culture, which consequently increase the demand of soy in aquafeed, especially U.S. Soy products, to create an entire green value chain.