Schlagwort: Direct Air Capture

Castro-Muñoz et al. (2022): A new relevant membrane application: CO2 direct air capture (DAC)

Roberto Castro-Muñoz, Moh, Zamidi Ahmad, Magdalena Malankowska, Joaquín Coronas IN: Chemical Engineering Journal, 137047,

This paper gives a perspective of the ongoing research and attempts of DAC applications via membrane separation and introduces the main membrane materials and types used for CO2 separation. Finally, the process considerations for DAC using membranes are stated to guide the new researchers in the field.


6 Things to Know About Direct Air Capture

Katie Lebling, Haley Leslie-Bole, Zach Byrum, Elizabeth Bridgwater on (World Resources Institute)

Direct air capture (DAC) is one type of technological carbon removal that shows promise today and will likely be part of a larger carbon removal portfolio. Compared to other types of carbon removal it uses relatively little space and can also be sited flexibly, so would avoid competition with other land uses and could be built on marginal land or near geological storage sites to minimize the need for CO2 pipelines. Here the authors answer some key questions about DAC.


CNN: DOE announces multibillion-dollar project to kickstart a carbon dioxide removal industry in US

by Ella Nilsen, CNN May 19, 2022

The US Department of Energy is announcing a massive investment in direct air carbon removal projects, in hopes of kickstarting an industry. On Thursday the DOE relesead a notice of intent for developers for four direct air capture hubs – each capable of removing over a million tons of CO2 per year — using $3.5 billion from the bipartisan infrastructure law.


Kikkawa et al. (2022): Direct Air Capture of CO2 Using a Liquid Amine–Solid Carbamic Acid Phase-Separation System Using Diamines Bearing an Aminocyclohexyl Group

Soichi Kikkawa, Kazushi Amamoto, Yu Fujiki, Jun Hirayama, Gen Kato, Hiroki Miura, Tetsuya Shishido, Seiji Yamazoe IN: ACS (American Chemical Society) Environment;

The phase separation between a liquid amine and the solid carbamic acid exhibited >99% CO2 removal efficiency under a 400 ppm CO2 flow system using diamines bearing an aminocyclohexyl group. Among them, isophorone diamine [IPDA; 3-(aminomethyl)-3,5,5-trimethylcyclohexylamine] exhibited the highest CO2 removal efficiency.


Singh & Colosi (2022): Capture or curtail: the potential and performance of direct air capture powered through excess renewable electricity

Udayan Singh, Lisa M. Colosi IN: Energy Conversion and Management, 100230,

This paper posits that it is not possible to effectively evaluate the economic and environmental impacts of direct air capture without accounting for the spatial and temporal contexts in it will be operated. Accordingly, the analysis aims to evaluate the near-term and medium-term (2030-50) potential of using excess renewable energy to power flexible deployment of direct air capture in California.


Working Paper: Direct Air Capture: Assessing Impacts to Enable Responsible Scaling

Katie Lebling, Haley Leslie-Bole, Peter Psarras, Elizabeth Bridgwater, Zachary Byrum, Hélène Pilorgé on (World Resources Institute)

This paper discusses the expected environmental impacts (local and distributed) of building and operating Direct Air Capture (DAC) plants in the United States. It provides considerations related to decision-making and DAC siting, including responsible scaling and equitable distribution of benefits, as well as policy and procedural recommendations. The paper was written in collaboration between World Resources Institute and the University of Pennsylvania.


Online event: Key Questions on DAC Hubs Implementation

Wednesday, May 11th; 3:30pm ET | 12:30pm PT by Carbon180

Carbon180’s policy experts will dive into the recent white paper Setting DAC on Track, which contains 19 tactical recommendations for lowering costs, establishing environmental justice regulations, and positioning the US as a leader in technological carbon removal. They’ll also be joined by DAC business leaders for an audience Q&A on the role of innovation in hub deployment.


Setting DAC on Track – Strategies for Hub Implementation

White Paper of Christopher Allen, Alayna Chuney, Courtni Holness, Rory Jacobson, Ugbaad Kosar, Vanessa Suarez on Carbon180

„In late 2021, Congress made a down payment on early DAC projects with the passage of the bipartisan Infrastructure Investment and Jobs Act (IIJA), which provided $3.5 billion in funding over five years for several DAC facilities through the Regional Direct Air Capture Hubs (DAC Hubs) program. As the first large-scale US deployments of DAC, these hubs are an opportunity to define the field with high-quality projects that create robust environmental and public health benefits, new jobs and economic opportunities, and broad community support.“


Deschamps et al. (2022): Modeling of Vacuum Temperature Swing Adsorption for Direct Air Capture Using Aspen Adsorption

Thomas Deschamps, Mohamed Kanniche, Laurent Grandjean, Olivier Authier IN: Clean Technologies. 2022; 4(2):258-275.

The paper evaluates the performance of an adsorption-based technology for CO2 capture directly from the air at the industrial scale. The approach is based on detailed mass and energy balance dynamic modeling of the vacuum temperature swing adsorption (VTSA) process in Aspen Adsorption software.