Anaerobic lagoons are widely used for municipal and agricultural wastewater treatment. However, there are increasing concerns about greenhouse gas emissions from the lagoons. Thus, there have been...

Anaerobic lagoons are widely used for municipal and agricultural wastewater treatment. However, there are increasing concerns about greenhouse gas emissions from the lagoons. Thus, there have been efforts in covering the anaerobic lagoons to collect biogas which is then used for energy generation or simply flared. Explain why these actions would help reduce the greenhouse gas (GHG) emission, and the effect of the GHG.