It is no secret that we have a waste problem. In a world of finite resources, the severity of the impacts of waste and convenience culture have become more visible. Efforts are being made to move towards a circular economy and with that, the rise in technologies that utilise waste as a resource. In discussing circular technologies, anaerobic digestion (AD) is one worth highlighting as it addresses the issues of both waste and clean energy production. Organic waste generated from the breakdown of food waste, sewage sludge, agricultural slurries, crop waste, etc. generates methane which, accord