NIWA, in collaboration with industry partners, has demonstrated that Covered Anaerobic Pond (CAP) systems for the collection and use of biogas from piggery waste can make good financial sense, and improve the environmental impact of livestock farming substantially.
Exploring opportunities for recovering biogas from farm effluent has produced a promising low-tech solution – covered anaerobic ponds. Not only is the technology an economical way of generating energy, it also has the dual benefit of providing farmers with a solution to their wastewater management issues while helping reduce their carbon footprint.
This project will demonstrate the commercial feasibility of producing bio-oil by the conversion of algae biomass that has been grown in wastewater treatment facilities. In particular we aim to maximise algae production in High Rate Algal Ponds (HRAP) by adding carbon dioxide, and demonstrate energy efficient conversion of algal biomass to bio-oil.