5. Optimization of cassava biogas production
5.1. Potential pre-treatment techniques for cassava biomass—An overview
5.1.1. Mechanical pretreatment
5.1.2. Ultrasonic pretreatment
5.1.3. Thermal pretreatment
5.1.4. Wet explosion pretreatment
5.1.5. Chemical pretreatment
5.1.6. Biological pretreatment
5.2. Use of microbial stimulants
5.3. Co-digestion of cassava biomass with other substrates
5.4. Optimizing the productivity of methanogens—An overview