Top 86 Carbon Capturing and Gas Recycling startups

Updated: Feb 08, 2026
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These startups develop new carbon capturing technologies such as direct air capture, bioenergy with carbon capture and storage, mineral carbonation for permanent storage, electrochemical CO2 reduction, sorbent-based capture systems, membrane separation technologies, etc.
1
Mombak
Country: Brazil | Funding: $150M
Mombak removes carbon dioxide from the atmosphere in the most natural way possible – through large-scale reforestation in the Amazon. The company purchases or leases land formerly used for pastures or farms and restores it to natural forest. Based on this, the company generates high-quality carbon credits, certifying how much CO₂ has actually been removed from the atmosphere, and sells these credits on the voluntary market to companies like Google and Microsoft that want to offset their emissions. The startup is developing its own forest management technologies and carbon trading system.
2
Spark Cleantech
Country: France | Funding: €34M
Spark Cleantech is developing a decarbonization system for heavy industry based on pulsed plasmalysis, which reduces emissions by 85% while simultaneously generating two decarbonized materials: solid carbon and hydrogen. Spark Cleantech's modules are installed between the client's existing gas network and their high-temperature industrial burners. Using pulsed plasma, the technology removes carbon from the gas before combustion, leaving only hydrogen - fully decarbonized energy source used directly in the production process. The extracted carbon is converted into a solid nanomaterial needed for polymer and battery production. Spark Cleantech's technology is currently being tested by clients in the metals, glass, polymer and battery industries.
3
Avnos
Country: USA | Funding: $133M
Avnos is commercializing technology to capture CO2 without consuming water, producing water for every ton.
4
Partanna
Country: Bahamas | Funding: $41.3M
Partanna specializes in the production of building materials designed to absorb CO2.
5
Osmoses
Country: USA | Funding: $15M
Osmoses engages in decarbonizing gas separations to eliminate one gigaton of carbon emissions per year.
6
LanzaTech
Country: New Zealand | Funding: $1.3B
LanzaTech has developed a novel gas-liquid fermentation process that produces fuels and chemicals from gas resources.
7
Climeworks
Country: Switzerland | Funding: $946.1M
Climeworks engages in capturing CO2 from the air via commercial carbon dioxide removal technology.
8
Twelve
Country: USA | Funding: $929.4M
Twelve is a new kind of chemical company built for the climate era. We make essential products from air, not oil.
9
Svante
Country: Canada | Funding: $504M
Svante is a carbon capture and removal solutions provider specializing in the development and manufacturing of novel solid sorbents.
10
Carbon Clean Solutions
Country: UK | Funding: $213.6M
Carbon Clean Solutions develops CO2 separation technology designed for industrial and gas treating applications.
11
Carbon Clean
Country: UK | Funding: $212.4M
Carbon Clean Solutions develops CO2 separation technology designed for industrial and gas treating applications.
12
Heirloom Carbon
Country: USA | Funding: $204.3M
Heirloom is a provider of direct air capture technology to enhance the natural process of CO2 absorption from the atmosphere.
13
Heirloom
Country: USA | Funding: $204.3M
Heirloom Carbon develops technology called carbon mineralization, to help minerals absorb CO2 from the ambient air in days, rather than years. By combining the best of engineering and nature, we can offer the most cost-effective and scalable Direct Air Capture solution in the world.
14
TBM
Country: Japan | Funding: ¥22.6B
TBM has developed CR-LIMEX, a new material made from captured carbon dioxide emitted by power plants mixed with calcium-containing waste and recycled plastic. The material is sturdy enough to be used in construction. The company also sells recycled materials made from consumer waste such as plastic containers and packaging.
15
Carbfix
Country: Iceland | Funding: $117M
Carbfix provides a natural and permanent storage solution by turning CO2 into stone underground in less than two years.
16
Air Company
Country: USA | Funding: $108.1M
Air Company turns carbon dioxide into things like perfume, vodka, hand sanitizer and aviation fuel
17
Solidia Technologies
Country: USA | Funding: $105M
Solidia Technologies is a tech firm that makes it profitable to use CO₂ for manufacturing construction and industrial products.
18
Loam Bio
Country: Australia | Funding: A$160.6M
Loam Bio is an agtech company that is using microbes to help the carbon cycle. It delivers high-quality CO2 removal with environmental co-benefits, by providing growers with unique tools and connecting them to business leaders who are driving the global path to net-zero.
19
CarbonCure
Country: Canada | Funding: $92.4M
CarbonCure Technologies creates, develops and licenses solutions that consume waste CO2 to make better concrete.
20
Solar Foods
Country: Finland | Funding: $76.7M
Solar Foods has developed a process that uses renewable energy and the carbon dioxide polluting our atmosphere to create an alternative protein it calls Solein.
21
Neustark
Country: Switzerland | Funding: $69M
Neustark is a concrete producer in bern using wastewater treatment plant by turning CO2 into minerals.
22
Carbon Recycling International
Country: Iceland | Funding: $66.3M
Carbon Recycling International is a company that produces methanol for use as an alternative fuel source.
23
Spiritus
Country: USA | Funding: $55.1M
Spiritus is a climate tech company developing direct-air-capture technology.
24
Satellite Vu
Country: UK | Funding: £41.3M
Satellite Vu develops “the world’s thermometer”: a satellite constellation capable of monitoring thermal emissions around the world.
25
Aircapture
Country: USA | Funding: $50M
Aircapture is creating a circular commercial carbon economy utilizing novel Direct Air Capture (DAC) technology.
26
Dimensional Energy
Country: USA | Funding: $48.7M
Dimensional Energy transforms carbon dioxide into sustainable aviation fuel (SAF) and valuable consumer products with the lowest energy input per barrel installed.
27
44.01
Country: UK | Funding: $48.2M
4.01 is a company that specializes in eliminating CO2 from the atmosphere by mineralizing it in peridotite.
28
Econic Technologies
Country: UK | Funding: $46.8M
Econic Technologies develops new catalysts and processes for the manufacture of polymers from CO2.
29
RepAir Carbon
Country: Israel | Funding: $44M
RepAir Carbon’s aim is to develop cell approach to capture or store greenhouse gases “at a gigaton scale”.
30
Capture6
Country: USA | Funding: $42.2M
Capture6 is a direct air capture start-up leveraging its technology to support climate resilience and industrial decarbonization.
31
Vaulted Deep
Country: USA | Funding: $40.3M
Vaulted Deep provides proven technology solutions for permanent carbon removal to promote local environmental and community health.
32
Mission Zero Technologies
Country: UK | Funding: $38.7M
Mission Zero is an Electrochemical that removes carbon dioxide from the air and concentrates it for a variety of sequestration pathways.
33
Captura
Country: USA | Funding: $34.5M
Captura is a carbon capture system to support a sustainable future for the climate.
34
Mantel
Country: USA | Funding: $32.5M
Mantel proposes a method to trap CO2 before it enters the atmosphere.
35
Graphyte
Country: USA | Funding: $30M
Graphyte utilizes carbon dioxide removal solution that is permanent, affordable, and immediately scalable.
36
Carbo Culture
Country: Finland | Funding: $27.5M
A biochar technology and project developer. The most scalable solution for industry & carbon removal
37
NovoNutrients
Country: USA | Funding: $26M
NovoNutrients is working to turn waste CO2 into high-value, low-cost proteins and oils for aquaculture and beyond.
38
Isometric
Country: UK | Funding: $25M
Isometric is a carbon removal registry, verification service, and science platform.
39
SaltX Technology
Country: Sweden | Funding: $23.6M
SaltX Technology has developed an electric CO2 separation technology for direct CO2 capture from air in high-temperature industries, including quicklime and cement production. This electric calcination technology uses electric plasma to replace fossil-driven heating with renewable electricity. The mineral solution used in direct carbon dioxide capture (DAC) is carbonated after binding with CO2 from the air. This carbonate solution can be regenerated during the electric calcination process, separating and isolating the CO2 for further use or geological storage. The EAC (electric arc calciner) is adaptable to various industries. Through seamless integration into DAC systems it makes the release and collection of pure CO2 more efficient. The company has already launched a 1.4 MW pilot plant producing 17 tons of carbon per day.
40
Ebb Carbon
Country: USA | Funding: $23M
Ebb Carbon works on a reverse electrochemical ocean deacidification process that captures CO2 from the atmosphere.
41
Noya
Country: USA | Funding: $22M
Noya is reversing climate change and pulling CO2 out of the sky by retrofitting existing pieces of equipment to capture carbon.
42
Dioxycle
Country: France | Funding: $17M
Dioxycle is develops electrolyzer that turns CO2 into ethylene
43
Ceezer
Country: Germany | Funding: $16.4M
CEEZER is a digital platform offering companies easy, secure, direct access to top-quality projects across the voluntary carbon market.
44
Eion
Country: USA | Funding: $15M
Eion removes atmospheric CO2, permanently and verifiably, with enhanced rock weathering on soil
45
Alt Carbon
Country: India | Funding: $12.6M
Alt Carbon is a carbon dioxide removal company using enhanced rock weathering to sequester carbon and rejuvenate Darjeeling's tea estates.
46
Cemvita Factory
Country: USA | Funding: $11.5M
Cemvita Factory has developed biomimicking technologies and custom-engineered microorganisms that catalyze the conversion of CO2 at ambient pressure and temperature
47
CarbonChain
Country: UK | Funding: $12.1M
CarbonChain's AI platform automates emissions tracking in carbon-heavy supply chains for a net-zero economy.
48
OCOchem
Country: USA | Funding: $11.6M
By engineering a new way to use CO2, and store energy, OCOchem’s technology helps solve the dual challenges of carbon emissions and large-scale zero-carbon energy storage for customers interested in reducing their carbon footprint, energy storage costs, or both.
49
UniSieve
Country: Switzerland | Funding: $10.7M
UniSieve is a cleantech company that provides molecular separation membrane solutions for a wide range of applications. Energy carriers such as hydrogen or methane are transported and consumed in purified form.
50
CarbonBuilt
Country: USA | Funding: $10M
CarbonBuilt enables concrete manufacturing to drive greenhouse gas reductions through the utilization of CO2 and other industrial wastes.
Marjana Bačić
Editor: Marjana Bačić
Marjana Bačić is a senior editor for RecyclingStartups. She has has more than 5 years experience covering the recycling industry. Marjana graduated from University of Belgrade, where she edited Recycling and Sustainable Development Journal. She has helped several non-profit organizations dedicated to promoting environmental education and sustainability. She also participates in beach clean-up initiatives and advocates for sustainable practices in local businesses. In her free time, Marjana enjoys hiking in the scenic Montenegrin countryside, practicing yoga for mindfulness, and experimenting with plant-based recipes in her kitchen. You can contact Marjana at marjanabacic(at)recyclingstartups(dot)com