Technologies to Capture CO$_2$ directly from Ambient Air

TL;DR

This paper reviews current Direct Air Capture (DAC) technologies that aim to remove excess CO$_2$ from the atmosphere, highlighting recent advancements and future directions for large-scale negative emission solutions.

Contribution

It provides a comprehensive overview of existing DAC methods, recent technological innovations, and potential future developments for large-scale CO$_2$ removal.

Findings

Emergence of new DAC technologies due to advances in surface chemistry and engineering

Potential for large-scale deployment of improved CO$_2$ capture methods

Future research directions for negative emission technologies

Abstract

Building a carbon-neutral world needs to remove the excess CO$_2$ that has already been dumped into the atmosphere. The sea, soil, vegetation, and rocks on Earth all naturally uptake CO$_2$ from the atmosphere. Human beings can accelerate these processes in specific ways. The review summarizes the present Direct Air Capture (DAC) technology that contribute to Negative Emissions. Research currently being done has suggested future perspectives and directions of various methods for Negative Emission. New generations of technologies have emerged as a result of recent advancements in surface chemistry, material synthesis, and engineering design. These technologies may influence the large-scale deployment of existing CO$_2$ capture technologies in the future.