One of the neglected benefits of urban and peri-urban agriculture (UPA) is the added option of recycling livestock waste, such as cow dung and chicken manure, as a source of energy. For instance, the production of cooking gas and electricity are two possible end products of using cow dung.

Although some studies suggest that urban and peri-urban agriculture could pose a risk to environmental sustainability, our research reveals that these practices can support the environment by recycling the waste produced by livestock.

Livestock waste generates biogas, a renewable energy source that can be used for the production of electricity and cooking gas. In contrast to other energy sources, like hydroelectric power plants that endanger the existence of aquatic life, the use of biogas emits fewer air-polluting greenhouse gases like methane, carbon dioxide, and nitrous oxide.

Due to lack of knowledge about proper disposal and recycling, most farmers opt to dispose of livestock waste outside the house or in a pit.

Farmers are aware that using biogas will reduce the number of trees cut down for the production of charcoal and firewood. They understand that the use of biogas significantly helps in environment protection.

“ If someone chooses to use biogas, they will no longer cut down trees for firewood. We used to have two cattle, but we could still generate biogas. Therefore, I think that using biogas will help us to protect and improve the environment. ”

Additionally, the use of fresh organic manure in the biogas digester can enhance biological diversity, improve soil fertility, and help in making fish food, while the remaining organic manure from the biogas plant can be used as fertiliser on the farm.

“ Manure is needed to make fish feed. Apart from this, farmers need it to improve soil fertility. So, in general, livestock waste, specifically manure, is a valuable material. ”

Thus, recycling livestock waste into renewable energy, i.e., biogas, ensures that household needs for cooking and electricity are met, while lowering the use of chemical fertilisers and maintaining a safe and clean environment. Therefore, effective management of livestock waste can contribute to the creation of a renewable energy source that will sustain the urban environment.