It has been observed that employing the natural processes occurring in the Earth’s ecosystem for mitigating the greenhouse gases emission is sustainable. One of the main sources of methane emission is agriculture (rice cultivation and livestock raising). Limiting the cultivation of rice would...

This article describes CO2 flows in the Earth’s ecosystem. It also describes how CO2 is made use of in various market sectors - as a raw material in the synthesis of plastics and fuels, during extraction in the food and perfume industries, for the transfer of heat in heating and refrigeration...

Energy recovery from sewage sludge offers an opportunity for sustainable management of sewage sludge and energy. Anaerobic digestion and pyrolysis are among the most promising processes applicable for sewage sludge-to-energy conversion. Anaerobic digestion of sewage sludge forms methane-rich...