Top 50 Desalination Technology - Series B

This startup develops low-cost handheld seawater desalination devices for humanitarian and marine applications, providing a reliable source of potable water in areas facing freshwater scarcity. Additionally, the company offers grid-scale energy storage and clean electricity solutions, enhancing energy accessibility while promoting sustainability.

Gradiant provides integrated water‑treatment platforms for large industrial facilities, combining membrane, adsorption, oxidation and extraction technologies to reduce freshwater intake and recover metals, minerals and other resources. The systems include an AI‑driven SmartOps analytics layer and proprietary CURE chemicals that continuously optimize process setpoints, predict maintenance and ensure compliance for applications such as zero‑liquid‑discharge, PFAS destruction, lithium extraction and electrolyzer‑ready water.

RePG Energy utilizes patented technology to generate electricity and potable water from latent heat and waste heat sources, employing principles of osmosis and diffusion without the need for turbines or generators. This system addresses energy inefficiency and water scarcity by enabling decentralized energy production and water generation in residential, industrial, and mobile applications.

Aquafortus utilizes a non-thermal recovery and crystallization technology platform to efficiently extract valuable resources from wastewater. This process reduces environmental impact and enhances resource recovery, addressing the challenges of waste management in various industries.

Aquaria develops atmospheric water generators that extract, filter, and purify moisture from the air to provide a reliable source of clean water. This technology addresses water scarcity and contamination issues, offering scalable solutions for homes, businesses, and communities facing water stress.

Commercializes a Hybrid Direct Air Capture (HDAC) system that captures CO2 and harvests water from ambient air using only electricity and solid sorbents, eliminating the need for water and heat. This approach reduces energy consumption and operational costs, enabling deployment in water-scarce regions while producing water as a byproduct. The HDAC system offers the lowest Levelized Cost of Capture in the direct air capture market.

The startup develops ceramic flat membrane filtration technology for wastewater treatment, providing reliable alternatives for water and sewage management. Their solutions enhance operational efficiency and ensure compliance with environmental standards in industrial applications.

Tidal Vision manufactures chitosan-based biomolecular solutions using its proprietary Chitofining™ Process and Zale Technology™ to address water treatment and agricultural challenges. Their products enhance efficiency and reduce environmental impact by providing high-concentration, zero-waste alternatives to traditional chemical solutions.

Summit Nanotech utilizes patented direct lithium extraction technology to efficiently extract high-purity lithium from brine, significantly reducing production time from 18 months to just one day. This process addresses the increasing global demand for lithium in electric vehicle batteries while minimizing environmental impact by reinjecting lithium-depleted brine back into the source.

The startup operates land-based aquaculture farms utilizing a recirculating aquaculture system (RAS) that integrates a hybrid flow-through mechanism, supplying fresh seawater from on-site boreholes. This approach enables the sustainable production of salmon in optimal conditions, minimizing handling and eliminating the need for harmful chemicals.

Haber provides a real-time automation platform that utilizes AI-driven algorithms and robotic sampling to monitor and control process, utilities, and water systems. This technology enhances operational efficiency by reducing chemical consumption, minimizing variability, and improving output quality in industrial settings.

Infinity Water Solutions provides a closed-loop water management system that recycles 100% of produced water for reuse in the oil and gas industry, utilizing proprietary technology to ensure high-quality water treatment. By offering reliable water sourcing and storage across a network covering over 130,000 acres, the company helps operators reduce their dependence on freshwater resources while minimizing environmental impact.

This startup provides treatment processes for natural gas and produced water in the oil and gas industry, utilizing automated control and data collection technologies for H2S gas, acid gas, and produced water treatment. Their systems enable firms to meet environmental regulations while minimizing human intervention and enhancing the reusability of water resources.

Moleaer develops industrial-scale nanobubble systems that enhance oxygen transfer rates in water treatment and agricultural processes, improving chemical reactions and water quality. Their technology enables more efficient irrigation and aquaculture by increasing dissolved oxygen levels, which promotes plant health and reduces operational costs.

The startup has developed a purification and disinfection device that generates hydrogen peroxide using only water, air, and electricity, producing an eco-friendly biocide. This technology enhances food and water safety while minimizing the environmental impact and risks associated with transporting and handling toxic disinfectants.

Via Separations develops proprietary membrane materials that reduce energy consumption in thermal separations by up to 90%, enhancing efficiency in industrial processes. Their technology addresses the significant energy demands of manufacturing sectors such as pulp and paper, chemicals, and refining, delivering substantial cost savings and operational flexibility.

EnergyX utilizes patented Direct Lithium Extraction technologies to efficiently convert brine into high-purity lithium products, addressing the global supply shortage of this critical resource. The company's advancements in lithium refining and battery innovation support the growing demand for sustainable energy storage solutions in electric vehicles and renewable energy systems.

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The startup develops a bio-based adsorbent material that selectively captures micro-pollutants such as pesticides and pharmaceuticals from contaminated water and wastewater. This technology enables clients to meet stringent wastewater regulations while protecting local ecosystems from harmful pollutants.

Versogen develops a scalable anion exchange membrane (AEM) electrolyzer that utilizes water and renewable energy to produce green hydrogen, addressing the need for zero-emission solutions in hard-to-abate industries. By employing earth-abundant materials, the technology offers a reliable and cost-effective method to significantly reduce industrial carbon emissions.

Hydraloop develops a water recycling system that captures and purifies domestic wastewater for reuse in showers, gardens, and laundry, promoting water circularity in urban environments. This technology addresses the growing demand for sustainable water management solutions amid increasing water scarcity.

Hysata develops hydrogen electrolyzers that utilize advanced membrane technology to efficiently convert water into green hydrogen, addressing the reliance on fossil fuels for energy. Their electrolyzers aim to lower production costs and increase the scalability of green hydrogen, facilitating a transition to sustainable energy sources.

Allonnia develops biotechnological solutions to remediate emerging contaminants such as PFAS and 1,4-dioxane using proprietary microbial systems and innovative separation technologies. Their methods enable the detoxification of contaminated water, aiming to treat over 600 billion gallons by 2040 while enhancing sustainable practices in the metals and mining industries.

GeoPura utilizes renewable energy sources, such as solar and wind, to produce green hydrogen through water electrolysis, enabling the generation and distribution of zero-emission electricity. This technology provides a sustainable alternative to fossil fuels, facilitating the decarbonization of various industries and helping organizations achieve their net-zero targets.

The startup manufactures hygienic water taps that utilize advanced filtration technology to provide both still and sparkling water, with capabilities to heat and chill. These taps deliver clean drinking water solutions for restaurants, offices, and homes, reducing reliance on single-use plastic bottles and promoting environmental sustainability.

Captura utilizes renewable energy to perform Direct Ocean Capture, extracting CO2 from seawater to enhance the ocean's natural carbon removal processes without additives or by-products. This technology addresses the urgent need for scalable carbon removal solutions to mitigate climate change impacts.

The startup develops software-guided ultrasonic technology that utilizes beam-forming techniques to precisely target and sonicate materials without halting production or using chemicals. This approach enhances process efficiency and helps clients meet stringent environmental regulations.

Monarch Energy develops utility-scale green hydrogen projects using electrolyzer technology that combines clean electricity and water to produce zero-emissions hydrogen. This approach addresses the need to decarbonize the 10 million tonnes of hydrogen consumed annually by industrial users in the U.S.

Power to Hydrogen develops anion exchange membrane (AEM) electrolyzers that integrate with renewable energy sources to produce low-cost hydrogen and pressurized oxygen without the use of precious metals. This technology enhances the economic viability of industrial hydrogen applications and optimizes energy output from solar and wind installations.

Panthalassa harnesses oceanic energy through advanced marine technology to generate low-cost, renewable power for offshore computing and sustainable fuel production. This approach addresses the global demand for clean energy while utilizing the ocean's vast renewable resources.

Rainmaker employs cloud seeding technology, utilizing radar validation and weather-resistant drones to enhance precipitation for agriculture, water supply, and ecosystem restoration. This approach directly addresses freshwater scarcity caused by climate change and increasing global consumption, providing a scalable solution to replenish vital water resources.

Advanced Ionics develops electrolyzers that operate in an intermediate temperature range, utilizing existing steam in industrial settings to produce green hydrogen with up to 50% less electricity per kilogram. This technology eliminates the green premium associated with hydrogen production, making it more cost-effective for industries reliant on hydrogen for exothermic reactions.

Blue Frontier has developed the Liquid Desiccant-Enhanced Dedicated Outdoor Air System (LD-DOAS), which achieves over 90% reduction in yearly electricity use while eliminating high GWP refrigerants. This system provides superior moisture removal efficiency and energy storage, enhancing indoor air quality without compromising energy consumption.

Bevi develops a smart water dispenser that connects to a building's water supply, providing customizable still and sparkling beverages using a specialized carbon filtration system. This technology eliminates the need for single-use plastic bottles and cans, saving an average of 50,000 containers annually per machine while offering a healthier hydration option with zero- and low-calorie flavors.

AIR COMPANY utilizes its proprietary AIRMADE™ technology to convert carbon dioxide and water into carbon-negative chemicals and sustainable aviation fuel through a modular, scalable process powered by renewable energy. This approach directly addresses climate change by transforming greenhouse gas emissions into valuable resources for various industries.

Enapter manufactures hydrogen generators using patented Anion Exchange Membrane (AEM) technology, enabling efficient production of green hydrogen from renewable energy sources. Their modular AEM Electrolysers, ranging from 2.4 kW to 100 MW, facilitate scalable hydrogen production while optimizing energy management through an integrated software toolkit.

OxEon Energy develops solid oxide electrolysis cells (SOEC) and solid oxide fuel cells (SOFC) for the efficient production of hydrogen, oxygen, and syngas from renewable energy sources. Their technology addresses the limitations of current energy storage solutions by providing scalable, high-purity gas production and fuel-flexible operation for various applications.

Hystar develops polymer electrolyte membrane electrolyzers for large-scale green hydrogen production, utilizing high-efficiency stacks in a modular design for flexible implementation. This technology addresses the need for sustainable hydrogen solutions to support the transition to renewable energy sources.

H2Pro develops a decoupled, membraneless electrolysis method for green hydrogen production, significantly reducing costs and enhancing operational flexibility. This technology addresses the need for affordable, scalable green hydrogen to support renewable energy integration and achieve net-zero emissions.

Verdagy develops a patented single-cell electrolyzer technology that enables efficient, large-scale production of green hydrogen by pairing with variable energy sources. This approach addresses the high operational costs and inflexibility of traditional electrolysis methods, delivering the lowest levelized cost of hydrogen in the industry.

The startup develops biofiltration technologies for the aquaculture industry, specifically utilizing algae biofilters to enhance water quality in oyster farming. By removing harmful elements from water and generating valuable byproducts, the company enables aquafarmers to minimize chemical use and reduce environmental impact.

CarboNet's NanoNet platform utilizes programmable flocculants and coagulants to enhance water treatment efficiency across various industries, significantly reducing chemical costs and operational expenses. The technology addresses freshwater scarcity and regulatory challenges by enabling companies to cut treatment costs by up to 50% and minimize toxic chemical usage by 90%.

The startup develops technology for direct lithium extraction from aqueous sources, utilizing a process that enhances lithium selectivity and durability compared to existing methods. This technology enables partners to achieve higher returns on investment and improved profitability in lithium production.

The startup provides integrated permeate channels utilizing washable flat sheet membranes that enhance fouling control and improve filtration flux. This technology enables industries and municipalities to efficiently reuse wastewater, addressing the challenges of membrane fouling in filtration systems.

Epic Cleantec provides turnkey onsite wastewater treatment and reuse systems that enable residential and commercial developments to reduce water utility demand by up to 95%. Their technology creates a reliable local water supply, addressing the challenges of water scarcity and rising utility costs.

The startup operates regenerative industry infrastructure that integrates renewable electricity and utilizes medium and low-grade heat for applications such as food production, water treatment, and nutrient recycling. This approach enables energy companies to efficiently recycle waste heat while supporting sustainable practices in agriculture and resource management.

Fuella develops, builds, and operates large-scale green hydrogen and green ammonia plants using water electrolysis technology to produce sustainable fuels. This approach addresses the urgent need for decarbonization in the energy sector by providing cleaner alternatives to fossil fuels.

Sudoc develops patented TAML catalysts that enhance oxidation reactions, significantly improving the efficiency of chemical processes while reducing the use of hazardous substances. By replacing toxic chemicals with environmentally sustainable alternatives, Sudoc mitigates the environmental impact of industrial cleaning and wastewater treatment.

KETOS offers a fully integrated water quality monitoring platform that utilizes IoT sensors to provide real-time data on over 30 water quality parameters, including heavy metals and nutrients. This technology replaces manual sampling, enabling water operators in industrial, agricultural, and municipal sectors to save time and ensure compliance with safety standards through automated reporting and predictive analytics.

Membrion develops electro-ceramic desalination technology that efficiently removes problematic ions from industrial wastewater, enabling compliance with regulatory standards while minimizing operational costs. Their membranes are designed to withstand extreme conditions, reducing the need for pre-treatment and enhancing water circularity in wastewater management systems.