Agriculture is one of the sectors that strongly contribute to greenhouse gas emissions on the
planet. In this sense, circular economy practices can be advantageous when using …

Biofuels have been widely recognized as potential solutions to addressing the climate crisis
and strengthening energy security and sustainability. However, techno-economic and …

The study reviews and compares the most utilised techniques to obtain high quality
biomethane by upgrading biogas from anaerobic digestion of the organic fraction of …

Circular bioeconomy models aim to reduce dependence on non-renewable and
unsustainable use of resources, involving also the inclusion of gas in the green taxonomy …

This paper defines the roles of biomethane for a double-green transition, through the
integration of an effective management of renewable energy and municipal waste. The …

Bioenergy with carbon capture and storage (BECCS) is a carbon dioxide removal (CDR)
solution necessary to achieve net-zero-carbon-emissions goals. While the BECCS potential …

This paper provides a revision of the latest studies on the topic methanation, a multi-stage
process where water is first converted into hydrogen in an electrolyzer, which subsequently …

Wastewater treatment plants play a significant role in minimizing environmental pollution by
treating wastewater and reducing the release of contaminants into the environment …

Raw biogas generated in the anaerobic digestion (AD) process contains several undesired
constituents such as H 2 S, CO 2, NH 3, siloxanes and VOCs. These gases affect the direct …

Circular Economy (CE) aims to retain the maximum value of products and materials for a
longer time in a closed-loop manner, thereby decoupling natural resource usage from …