How Our Technology Works
Advanced clay-based adsorbents for low-energy CO₂ capture and biogas upgrading
CarbSorbTec uses engineered clay-based adsorbents to selectively capture CO₂ from biogas. Our pelletized sorbents combine high adsorption performance with efficient regeneration, enabling the production of high-purity biomethane while recovering a concentrated biogenic CO₂ stream.
At the heart of the technology is a unique adsorbent derived from abundant natural minerals. Through advanced materials engineering, we tailor the clay's nano-layered structure to preferentially adsorb CO₂ while allowing methane (CH₄) to pass through. Raw biogas is fed into adsorption columns packed with these engineered pellets, where CO₂ is captured through a reversible physisorption mechanism. The adsorbent is then regenerated and reused in a continuous adsorption-regeneration cycle, ensuring reliable and efficient operation. Unlike conventional upgrading technologies that rely on chemical solvents, high temperatures, or energy-intensive regeneration, CarbSorbTec operates close to ambient conditions and uses pressure changes alone to drive the separation process. This enables a simpler, safer, and more sustainable solution with lower energy consumption, reduced operating costs, and a smaller environmental footprint.
Engineering and Process Control Across Multiple Scales
CarbSorbTec's technology platform spans the entire value chain, from molecular sorbent design and scalable pellet manufacturing to pilot-scale biogas upgrading and modular processing systems. By combining advanced clay-based materials with optimized adsorption processes, we enable highly selective CO₂ capture and efficient renewable gas production. Our multidisciplinary approach integrates materials science, process engineering, and system design to deliver solutions that are efficient, scalable, and economically attractive. The result is a new generation of carbon capture and gas treatment technologies that reduce energy consumption, lower costs, and support the transition to a low-carbon and circular economy.
About CarbSorbTec: Carbon Capture & Resource Recovery Solutions
We develop sustainable clay-based carbon capture technologies that transform emissions into valuable resources while supporting the transition to a low-carbon economy.
Here are some of the key advantages that set CarbSorbTec apart.
High CO₂/CH₄ Selectivity
- Patented clay sorbents selectively capture CO₂ while minimizing methane losses.
- Up to ~30× higher affinity for CO₂ than CH₄, enabling efficient biomethane upgrading.
- High CO₂ adsorption capacity.
Low Energy Consumption
Low-pressure (near-ambient) operation and energy-efficient regeneration reduce energy demand. No heating is required for sorbent regeneration, lowering both CAPEX and OPEX.
High-Purity Biomethane & Bio-CO₂
Produces valuable product streams, including grid-quality biomethane and high-purity biogenic CO₂, maximizing resource recovery.
Modular & Scalable Design
Compact, modular design enables cost-effective deployment and straightforward scale-up. Flexible PSA architecture is suitable for applications ranging from small farms and wastewater plants to large industrial biogas facilities.
Natural & Sustainable Materials
Made from abundant mineral clay, our sorbents are low-cost, reusable, and free of toxic chemicals. They provide a sustainable alternative to conventional sorbent materials.
Waste-Free Operation
No solvents, toxic by-products, or secondary waste streams, enabling clean, safe, and simple operation.
Science-Backed, Industry-Proven
Patent-protected technology validated through peer-reviewed research and successfully demonstrated from laboratory studies to continuous pilot-scale operation (TRL 5-6).
Robust & Durable
Long-lived sorbents maintain stable performance with minimal degradation over repeated adsorption-regeneration cycles.
Molecular-Level Selectivity
CarbSorbTec's clay-based sorbents represent a step change in carbon capture and biogas upgrading. Within the layered clay structure, exchanged cations create preferential adsorption sites that selectively attract and retain CO₂ molecules while allowing methane to pass through with minimal interaction.
During operation, CO₂ is captured within the clay layers and subsequently released during regeneration, enabling repeated use with high selectivity, low energy consumption, and minimal sorbent degradation.
Unlike conventional technologies such as amines, membranes, zeolites, and metal-organic frameworks (MOFs), our approach combines high CO₂ selectivity with low regeneration energy and abundant natural materials. The process operates without high-pressure compression, heat-intensive regeneration, or waste-generating streams, providing a simpler, more sustainable, and cost-effective solution for carbon capture and biogas upgrading.
Built to Perform. Built to Last.
Our sorbents are produced from abundant natural clay and manufactured using a water-based process, without toxic solvents, hazardous chemicals, or complex processing steps. The material can be shaped into robust, recyclable pellets as well as beads, monoliths, sheets, and other custom geometries, enabling scalable deployment across a wide range of applications.
Unlike many conventional sorbents that gradually lose capacity during repeated adsorption-regeneration cycles, our clay-based materials maintain their structural integrity and separation performance over extended operation. Their excellent mechanical stability supports reliable performance under real-world conditions, including start-stop operation, load fluctuations, and integration with intermittent renewable energy sources.
Combining a natural mineral composition, high CO₂ adsorption capacity, and low-energy regeneration, CarbSorbTec's sorbents provide a sustainable, scalable, and cost-effective solution for biogas upgrading, carbon capture, and gas separation. Designed for long service life and minimal degradation, they deliver consistent performance over hundreds of operating cycles.
Clays are omnipresent and used in a wide range of applications
Adsorption and environmental remediation
CO₂ capture, water purification, pollutant removal
Construction materials
cement, bricks, ceramics
Catalysis
thermal, photocatalysis, electrocatalysis
Agriculture
soil conditioning, controlled-release fertilizers
Energy applications
hydrogen storage, catalyst supports, gas separation
Industries We Serve
Tailored solutions for diverse biogas production sectors
Landfills
The Challenge
Landfill gas typically contains 40-60 vol% methane (CH₄) and 30-50 vol% carbon dioxide (CO₂), with smaller amounts of nitrogen (N₂), oxygen (O₂), hydrogen sulfide (H₂S), water vapor, and trace volatile organic compounds (VOCs).
Our Solution
Our clay-based sorbents operate at ambient pressure with no complex infrastructure, making them ideal for distributed landfill sites.
Key Benefits
- Lower energy than membranes
- >90% CH₄ purity with >95% recovery
- Scalable from 1-100+ Nm³/hr
Applications
On-site upgrading for grid injection, vehicle fuel production, or electricity generation with reduced carbon intensity.
Wastewater Treatment Plants
The Challenge
Small to medium-scale digesters at municipal WWTPs need cost-effective upgrading solutions that fit within limited budgets and space constraints.
Our Solution
Compact, modular systems with minimal footprint and low maintenance requirements, suitable for decentralized facilities.
Key Benefits
- Suitable for 1-100 Nm³/hr flows
- Minimal footprint and maintenance
- Ambient operating conditions
Applications
Municipal WWTPs, industrial effluent treatment, and decentralized sanitation systems seeking energy independence.
Manure Digesters
The Challenge
Agricultural biogas production faces high variability in gas composition and seasonal production patterns, requiring robust and flexible upgrading technology.
Our Solution
Our technology is robust to composition changes and operates reliably under varying conditions with simple regeneration.
Key Benefits
- Farm-scale economics
- Energy independence for farms
- Potential for carbon credit generation
Applications
Dairy farms, livestock operations, cooperative digesters, and agricultural waste-to-energy projects.
Food Waste Facilities
The Challenge
Food waste digesters produce biogas with high CO₂ content. Achieving pure biomethane requires efficient separation while maintaining sustainability.
Our Solution
Natural clay materials that are non-toxic, regenerable, and align with circular economy principles for sustainable waste processing.
Key Benefits
- Sustainable waste-to-energy conversion
- Circular economy alignment
- Natural, abundant materials
Applications
Food processing plants, commercial composting facilities, restaurants, and supermarket waste management systems.
Our Services
Comprehensive support from pilot testing to commercial deployment
Pilot Programs & Field Testing
Partner with us to test our technology at your facility. We provide equipment, technical support, and performance analysis to validate the solution for your specific biogas composition and flow rates.
Engineering Consultation
Our team of experts provides technical consultation for biogas upgrading projects, including process design, feasibility studies, and optimization of existing systems.
Sorbent Production & Supply
We produce and supply high-performance clay-based sorbents optimized for biogas upgrading applications, with consistent quality and reliable delivery.
Research Partnerships
Collaborate with our research team on developing next-generation sorbent materials and process innovations tailored to emerging biogas applications.
Powered by Clay. Driven by Sustainability.
At the heart of CarbSorbTec's technology is a unique clay-based sorbent made from abundant natural minerals. By capturing CO₂ through pressure-based separation rather than chemical solvents, our process combines high efficiency with low energy consumption. The result is a simple, sustainable, and cost-effective solution for biogas upgrading and carbon capture.
No solvents. No harmful emissions. Just smarter materials enabling cleaner biomethane production and a lower-carbon future.
Partnerships
Great things are built together.
At CarbSorbTec, we believe strong partnerships are essential to turning innovative ideas into successful, scalable biomethane projects. By working closely, we create solutions that deliver value for everyone involved.
Together, we turn organic waste into opportunity.
The systems—including the materials and Biogas Upgrading Systems (BUS)—we supply transform biogas generated from organic waste into high-value, low-carbon renewable natural gas (RNG) for gas networks, transportation, and industry, using a wide range of sources, including landfills, dairy farms, wastewater, and food waste.
By combining proven technology with innovative materials, CarbSorbTec is helping make RNG more accessible, scalable, and sustainable—without adding unnecessary technology risk.
Partner with us to build smarter energy solutions, create shared value, and accelerate the transition to a cleaner, greener world.
Our Partners & Collaborators
Together, we are advancing carbon capture solutions for cleaner energy and a lower-carbon future
Ready to Upgrade Your Biogas?
Contact us to discuss how our technology can benefit your facility
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