A sustainable operational method for micro-scale biodigesters in South Africa

Abstract

This paper describes an investigation into sustainable operational methods for micro-scale biodigesters. The findings indicate a compulsory maintenance contract that ensures constant digester feeding for microorganism sustenance is essential. A routine maintenance plan to ensure that all digester mechanical failures are minimized is also recommended. It expected that the proposed sustainable operational method for this technology will contribute towards energy access to millions of people in South Africa and globally as well as achieving national sustainable development goals objectives. The methodology can also result in increased uptake of this technology, even by those that are connected to the national grid, as a way of reducing their energy bills. This paper also highlights the high cost of micro-scale biogas digesters is a key hindrance for small-scale biogas digester rollout.