 anaerobic digestion, AD, is a widely used technology for converting organic waste into biogas and biofertilizer. It involves the use of mixed cultures of bacteria and archaea in a bioreactor to break down organic material into biogas and biofertilizer. This process produces a wide range of intermediary compounds, including volatile fatty acids, VFAs. These VFAs can be recovered and used as precursor chemicals for various industrial applications. In addition, the process also produces hydrogen gas which can be used as a clean energy source. By optimizing the conditions of the bioreactor, it is possible to maximize both VFA and hydrogen production. This article was authored by Stephen Wayne-Ana, Luka Tuisa, Mukesh Kumar Awasthi, and others.