**5. Conclusions**

Biogenic materials have the potential to serve as an alternative energy source. In this study, biodried materials obtained from biogenic and non-biogenic sources by bio-drying process were analyzed to assess its potential for energy recovery. Bio-dried material obtained from different composition of waste materials were assessed with regards to biogenic carbon and energy content. The composition of biogenic source in the waste matrix was found to significantly impact on the nature of the bio-dried material produced due to its high moisture content, particularly food waste. Moreover, high amount of biogenic source in the waste mix corresponded to high moisture content and lower calorific value. Food waste significantly impacted on the biogenic carbon content of the bio-dried material, whereas paper and pruning waste were identified as the positive main contributors to the biogenic carbon content of the bio-dried material obtained. It was further revealed that, notwithstanding the amount of non-biogenic source in the waste matrix, the proportion of food waste could have an effect on the moisture content and calorific value of the final product. Based on the energy content of the bio-dried material obtained, the final product could be used as an energy source in combustion process which could lead to reduction in over reliance on fossil fuel. Additionally, optimization of the waste materials would enhance the biogenic and energy content of the bio-dried material. Bio-dried material obtained from waste would therefore be a better sustainable environmental solution than landfill provided the waste being used has the right biogenic content and a plant is efficient at turning that waste into useable energy. Finally, this technology will help mitigate environmental pollution from the disposal of biodegradable waste.
