Highlights•CO2 capture and utilization as key processes for circular economy.•New
adsorbent/absorbent materials and catalysts are discussed.•Chemical and Biochemical …

Atmospheric carbon dioxide (CO 2) concentrations are currently rising at an unstoppable
rate, and it is urgent to curb this trend for a stable and sustainable atmospheric environment …

Methane enrichment in anaerobic digestion (AD) is definitely required to enhance the
calorific value of biogas to ensure its application as an off-grid energy source …

As a clean and renewable energy, biogas is an important alternative to fossil fuels. However,
the high carbon dioxide (CO 2) content in biogas limits its value as a fuel.'Biogas …

Microbial fuel cells (MFCs) have undergone great technological development in the last 20
years, but very little has been done to commercialize them. The simultaneous power …

The utilization of carbon dioxide as building block for chemicals or source of carbon for
energy products has been explored for over 40 years now, with varying allure. In …

The term “circular bioeconomy-based clean technologies” has attracted global attention in
recent years, and it now plays an important role in solving issues of increasing biowaste …

The development and implementation of energy storage solutions is essential for the
sustainability of renewable energy penetration in the electrical system. In this regard, power …

Global warming, along with increasing global energy demands, has led to the need for a
sustainable and low-carbon-based energy economy. In addition to renewable energy …

Anaerobic digestion (AD) is an environmentally friendly technology that can harness
bioenergy from fishery processing wastewaters, which are usually treated with thermal and …