**4.4 Pyrolysis**

Pyrolysis is the thermochemical conversion technology that operates at moderate temperature to produce solid, liquid, and gas at different composition [41, 42]. It can treat waste to produce char, oil, and gas for further energy conversion. The fast pyrolysis is favored in fine feed and operates at high temperature to produce bio oil [43]. Intermediate pyrolysis operates at moderate temperature to produce both char, oil, and gas [44]. It has an ability to handle large size, moderate moisture, and different compositions [45]. It is a technology that fits biowastes including MSW. Its appropriateness in Africa is challenged since it is sophisticated and requires high investment, and thus unfavorable in small scale. Intermediate pyrolysis has a big chance in Africa since it flexible, modular, and operates at moderate temperatures.
