By Rockerhill Global
As Rockerhill Global delivers wet CO2 dewatering skids to American DAC projects, it's worth examining the broader technology landscape these systems serve, the products emerging from captured CO2, and the engineering capabilities required to bring such projects from concept to commissioning.
Major DAC Technology Pathways
Two principal technologies currently dominate commercial DAC deployment. Solid sorbent-based systems (S-DAC), used by developers like Climeworks and Heirloom, employ amine-functionalized adsorbent materials that chemically bind CO2 at ambient temperature and release it upon moderate heating, typically in the 60–120°C range. This lower regeneration temperature allows integration with waste heat or renewable thermal sources, though sorbent durability and cycle life remain active engineering challenges.
Liquid solvent-based systems (L-DAC), pioneered by Carbon Engineering and deployed commercially by Oxy's 1PointFive, use aqueous alkaline solutions - typically potassium hydroxide - to capture CO2 as a carbonate. Regeneration requires high-temperature calcination above 900°C, giving L-DAC higher thermal energy demands but generally faster reaction kinetics and a track record at larger single-train capacities.
Beyond these two major technologies, emerging process include membrane-based separation, electrochemical swing adsorption, and moisture-swing adsorption, each targeting lower energy penalties but currently at earlier technology readiness level in Rockerhill's view. Across all methods, the fundamental challenge is the same: efficiently extracting CO2 from air at roughly 420 ppm - a concentration far more dilute than industrial flue gas - which drives significant energy requirements per ton captured regardless of the chosen chemistry.
What Happens to the Captured CO2
Once captured and processed, CO2 from DAC facilities generally follows one of several paths. The largest share is intended for permanent geological sequestration, injected deep underground into saline aquifers or depleted reservoirs for long-term storage - the basis of CCS projects. A growing secondary pathway is utilization,also called CCUS, where captured CO2 becomes feedstock for synthetic fuels, enhanced oil recovery, mineralization into building materials and aggregates, or carbonation for food and beverage applications. Some projects also route captured CO2 into industrial chemical processes, including production of methanol, polymers, and other carbon-based products.
And CCUS companies including:Celanese,Econic Technologies,Carbon Recycling International,CarbonCure Technologies etc.
Rockerhill's Integrated Project Delivery
Successfully supplying critical process equipment into DAC projects requires more than component fabrication - it demands coordinated engineering across disciplines. Rockerhill Global maintains in-house capability spanning detailed mechanical and process design, electrical engineering, automation and control system integration, manufacturing, and full skid modularization. This vertically integrated model allows Rockerhill to take a dewatering or gas-conditioning skid from process flow diagram through 3D detailed design, instrumentation and control philosophy, PLC/DCS programming, fabrication, and factory acceptance testing under a single accountable team.
For DAC developers, this integration reduces interface risk between design and fabrication, shortens delivery schedules, and ensures equipment is built to be shop-tested and shipped as a fully modular, plug-and-play unit - minimizing field installation time and commissioning complexity at remote or weather-constrained project sites across North America.
Rockerhill dedicate to a better world with its unique integrated manufacturing capabilities.
