What Guild Associates, Inc. does

Guild Associates, Inc. is a privately held specialty engineering and manufacturing company founded in 1981 and headquartered in Dublin, Ohio, operating across three integrated business divisions anchored by adsorption science and materials expertise. The Gas Processing division commercializes Pressure Swing Adsorption (PSA) systems for biogas upgrading to Renewable Natural Gas, anchored by its sole license to BASF's Molecular Gate adsorbent technology and proprietary BSR-050 hydrogen sulfide removal media; flagship products include the NanoGate and MicroGate compact PSA systems (for flows as low as 15 SCFM), the Equilibrium nitrogen rejection PSA, and full digester-gas upgrading trains serving landfills, wastewater treatment plants, agricultural digesters, and food processing facilities. The Military Systems division supplies containerized solutions to the US Department of Defense, including the Laundry Advanced System (LADS, 204 units delivered), Mobile Integrated Remains Collection System (MIRCS, 176 Army plus 9 Marine units), and SCORM-compliant training simulators, while its Commercial EMS line offers RSU portable morgue systems originally developed during the COVID-19 response.

The Chemical and Biological Defense division, operated alongside subsidiary Guild BioSciences, develops reactive decontamination sorbents (A200 with 2M+ lbs fielded; advanced GA200 zirconium hydroxide powder), the M98 collective protection guard bed, Zarbon non-carbon filtration media, a portfolio of catalysts (including PFC-200 for perfluorocarbon abatement), LumiPhage bioluminescent reporter bacteriophages, and recombinant organophosphorus hydrolase enzymes — largely under contracts with ECBC, DARPA, DTRA, NSWC Dahlgren, and Army ERDC. Revenue is generated through custom-engineered equipment sales (project-based, feed-gas-specific sizing) and licensing/royalty arrangements, distributed via direct enterprise sales, DoD procurement, and industry trade show lead generation. Named customers include GreenGasUSA, Duke University, Smithfield Foods, ADM, Waste Management, EVENSOL, multiple municipal water authorities, and US Army/Marine Corps procurement agencies, with deployed equipment across North America, Brazil, the UK, and the Philippines.

Name

Guild Associates, Inc.

Legal name

Guild Associates, Inc.

Website

https://guildassociates.com

Company type

Private

Founded year

1991

Operating status

Operating

Headcount range

51–100 employees

Short description

Guild Associates is a privately held Ohio-based specialty engineering firm that designs and manufactures PSA gas processing systems for biogas upgrading to RNG, containerized CBRN defense and military field systems for the US DoD, and advanced filtration, sorbent, and biosensor materials. It serves landfill operators, WWTPs, agricultural digesters, food processors, and US military agencies via sole-license Molecular Gate technology.

Ownership category

akta.pro rank

Product category

Industrial Gas Processing Equipment

NAICS

Air and Gas Compressor Manufacturing (333912), Basic Chemical Manufacturing (3251), Industrial Gas Manufacturing (325120)

SIC

Oil & Gas Field Machinery & Equipment (3533), Industrial Organic Chemicals (2860), Miscellaneous Chemical Products (2890)

akta.pro primary industry

RNG Upgrading, Purification & Conditioning (Membranes, PSA, Amine, Cryogenic) (EUAAAEAD)

akta.pro secondary industries

Biogas Upgrading to RNG & Injection/Fueling (Gas Cleanup, Compression) (EUAIAEAF), RNG Interconnection, Gas Quality & Upgrading Compliance (EUAJAJAC), Gas Treating Chemicals & Consumables (Amines, Glycols, Adsorbents, Catalysts) (EUAAABAG)

Keywords

• Biogas upgrading systems
• Renewable natural gas equipment
• Pressure swing adsorption
• Military containerized systems
• Chemical biological defense

Headquarters

HQ city

Dublin

HQ country

Ireland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Technology or R&D, Operations, Supply Chain, Marketing or Sales

Revenue model

1. Biogas Processing Equipment Sales: Guild Associates designs, engineers, and manufactures custom gas processing systems (PSA equipment, H2S removal media, molecular gate technology) that are sold to biogas project developers, landfill operators, wastewater treatment facilities, and agricultural digester operators. Equipment includes NanoGate, MicroGate, Equilibrium PSA, and BSR-050 media. Sales are project-based with custom sizing and engineering.
2. Military Systems and CBRN Equipment: Guild Associates manufactures and supplies military systems including LADS laundry systems (204 units produced for US Army), MIRCS mortuary systems (176 for Army, 9 for US Marines), M100/M295 decontamination kits, M98 guard beds, and training simulators. Equipment is sold to the US Department of Defense under contracts. Also develops CBRN biosensors and decontamination products under government contracts (ECBC, DARPA, DTRA).
3. Licensing and Technology Royalties: Guild Associates is the sole licensee of BASF's Molecular Gate™ adsorbent technology, which is central to its PSA systems. This licensing arrangement enables it to commercialize the technology for biogas upgrading applications.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Guild Associates designs, engineers, and manufactures custom gas processing systems using its sole-licensed Molecular Gate™ PSA adsorbent technology to upgrade biogas (from landfills, wastewater treatment plants, agricultural digesters, and food waste facilities) into pipeline-quality renewable natural gas. The company also produces containerized military systems including LADS laundry systems and MIRCS mortuary systems for the US Armed Forces, and develops chemical-biological defense products such as A200/GA200 decontamination sorbents, M98 guard beds, Zarbon filtration media, catalysts, and LumiPhage biosensors through its Guild BioSciences subsidiary.

Product overview

Guild Associates, Inc. is a diversified engineering and manufacturing company serving commercial and military markets with three primary product divisions. The Gas Processing division offers the Molecular Gate PSA technology platform (including Nanogate, Microgate, and Equilibrium N2 Rejection systems) for biogas upgrading to renewable natural gas, along with BSR-050 H2S removal media and LNG pretreatment systems. The Military Systems division provides containerized solutions including the LADS laundry system, MIRCS mortuary system, and Training Simulators. The Chemical and Biological Defense division supplies decontamination products (A200, GA200 sorbents), M98 Guard Bed filters, molecular filtration media, catalysts, and biosensors developed through Guild BioSciences. The company also offers Commercial EMS products including RSU portable morgue systems. All divisions leverage Guild's core expertise in adsorption research, catalytic materials, and system integration.

Differentiator

Problem solved

Functional benefit

Products and services

• BSR-050 Hydrogen Sulfide Removal Media High-capacity reactive H2S removal media for landfill gas, digester gas, and natural gas purification. Removes >1 lb H2S per lb of media even at low O2 levels (~0.1%) and delivers up to 80% cost savings versus conventional media for landfill gas operators.
• NanoGate PSA System Compact Pressure Swing Adsorption (PSA) system for biogas upgrading to renewable natural gas at small-to-medium flow rates (as low as 15 SCFM), enabling decentralized RNG production at smaller farms, water resource recovery facilities, and food waste digesters where competing technologies were previously too costly.
• MicroGate PSA System Compact biogas upgrading PSA system for smaller-scale applications, part of the NanoGate/MicroGate product line enabling decentralized RNG production at flows below those where conventional competing technologies are economical.
• Molecular Gate™ Adsorbent Technology Platform Proprietary Pressure Swing Adsorption technology using patented Molecular Gate™ adsorbent with pore sizes controlled to preferentially adsorb CO2 and N2 while allowing methane to pass through. Guild Associates is the sole licensee of BASF (formerly Engelhard). Fully regenerable, with media lasting the lifetime of the equipment (exceeding 14 years at multiple locations).
• Biogas and Digester Gas Upgrading Systems Complete biogas upgrading plants that remove CO2, N2, H2S, water, siloxanes, and VOCs in a single-step regenerable process for pipeline-quality RNG injection at wastewater treatment plants and agricultural digesters.
• Equilibrium N2 Rejection PSA Nitrogen rejection system using Equilibrium PSA with activated carbon adsorbent for removing nitrogen and oxygen from landfill gas to pipeline injection standards, achieving >97% methane recovery at the N2 PSA stage with autonomous operation.
• Landfill Gas Upgrading Systems Dual-PSA systems combining Molecular Gate CO2 removal with N2 rejection PSA for landfill gas upgrading, meeting California Rule 21 and Rule 30 pipeline specifications.
• LNG Pretreatment Systems Molecular Gate PSA systems for CO2 removal to 50 ppm or less as LNG liquefaction pretreatment, including water, CO2, H2S, and heavy hydrocarbon removal in a single step for landfill gas-to-LNG facilities.
• Laundry Advanced System (LADS) Mobile closed-loop aqueous-based laundry system for the US military, processing 8,000 lb/day of bagged laundry while consuming only 1,300 gallons/day of water and requiring two operators. Capable of cleaning chemical protective suits including JSLIST. Replaces four M-85 field laundry systems and reduces water consumption from 24,000 gallons/day to 1,300 gallons/day.
• Mobile Integrated Remains Collection System (MIRCS) ISO frame-based mortuary system for storage of up to 16 remains at 34-36°F, deployable worldwide via intermodal transportation including helicopter airlift. 176 units completed for the US Army and 9 for the US Marines.
• Training Simulators Interactive process simulation trainers replicating military equipment operation, built to exact specifications of original equipment with touch screen design and SCORM compliance, for the US military and training commands.
• RSU Series Portable Morgues Self-contained temporary human remains storage systems developed in response to COVID-19 pandemic, available in four sizes (RSU-8, RSU-12, RSU-16, RSU-20) accommodating 8-20 remains with refrigeration and mortuary standards compliance.
• A200 Decontamination Sorbent Silica-alumina particle and activated carbon mixture developed with ECBC for adsorbing and rendering inert chemical warfare agents. Over 2 million pounds produced for M100 and M295 decontamination kits fielded by every branch of the US military.
• GA200 Decontamination Powder Advanced zirconium hydroxide-based decontamination powder exceeding A200 performance specifications for efficacy, reactivity, reactive capacity, and vapor off-gassing. Cost-competitive replacement for current M295 and M100 kit decontaminants.
• M98 Collective Protection Filter Guard Bed Guard bed using media-loaded polyester webbing in a semi-rigid annular ring that fits inside the M98 HEPA filter. Removes battlefield contaminants (SOx, NOx, fuel vapors) upstream of the M98 filter, extending M98 filter service life by over 25%. Pressure drop less than 1 inch water column at standard flow conditions. Developed with ECBC and NSWC Dahlgren.
• Zarbon Molecular Filtration Media Non-carbon filtration media outperforming standard ASZM-TEDA activated carbon with superior performance under high humidity conditions. Military-grade versions under DoD test; commercial versions independently tested for superior sulfur dioxide removal and superior de-adsorption properties compared to activated carbon.
• Catalyst Portfolio Catalytic materials including 3X Catalyst for destroying heteroatom-containing chemical agents without loss of reactivity (suited for stockpile and non-stockpile demilitarization), No-NOx Catalyst for nitrogen-containing compounds, and PFC-200 for destroying perfluorocarbons and hydrofluorocarbons (SF6, CHF3, CF4, C3F8, C4F8, NF3) with minimal NOx formation.
• LumiPhage™ Bioluminescent Reporter Bacteriophages / BRAVES System Engineered bacteriophages from Guild BioSciences that infect target bacteria and produce a readily detectable luminescent signal indicating presence and viability of target organisms. Achieves sensitivities as low as 10^1 CFU/mL for Bacillus anthracis and Yersinia pestis. Includes the BRAVES (Bacteriophage Rapid Anthrax Viability Evaluation System) for detecting viable B. anthracis pre- and post-decontamination in the field.

Quantifiable outcome

• Up to 80% cost savings on landfill gas H2S removal compared to conventional media, with highest removal capacity in the industry (>1 lb H2S per lb of media)
• +7 more outcomes

Named customers14 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature11 records

Partnerships

19 partnerships are on record, tiered core and minor.

• GreenGasUSAcoreStrategic or Co-development Partner · 1 July 2021GreenGasUSA is a primary strategic partner, selecting Guild Associates as equipment vendor for multiple RNG projects. The partnership began with McCall Farms (Effingham, SC) and expanded with the Duke University RNG initiative and the Enviva 10-year offtake agreement. GreenGasUSA describes the relationship as a long-term partnership extending to a significant number of future RNG projects. Guild supplies Molecular Gate CO2 removal PSA and Equilibrium N2 removal PSA systems.
• Duke UniversitycoreStrategic or Co-development Partner · 1 July 2021Duke University has partnered with GreenGasUSA on multiple RNG projects to decarbonize its energy portfolio toward carbon neutrality. Guild Associates supplies the equipment (Molecular Gate CO2 Removal PSA and Equilibrium N2 Removal PSA) for these projects. The Duke press release was published July 2021.
• McCall Farms (Effingham, SC)coreStrategic or Co-development Partner · 1 July 2021McCall Farms vegetable processing plant in Effingham, SC hosts an RNG facility where Guild Associates' Molecular Gate PSA equipment converts agricultural waste biogas into RNG consumed by Duke University. GreenGasUSA doubled the digester gas production capacity, and Guild provided a second PSA system for the expansion.
• BASF (formerly Engelhard)coreOEM/ Whitelabel/ Licensing PartnerGuild Associates is the sole licensee of BASF's Molecular Gate™ adsorbent technology. Originally developed by Engelhard (now part of BASF), this patented PSA adsorbent technology with tightly controlled pore sizes is central to Guild's biogas upgrading business. Guild is solely responsible for all representations and commercialization of the technology.
• EVENSOL LLCcoreStrategic or Co-development PartnerEVENSOL LLC is developing the Foothills Renewables Project (Caldwell County, NC) and the Upper Piedmont Renewables Project (Person County, NC). Guild Associates supplies Equilibrium PSA nitrogen rejection equipment for both projects.
• Edgewood Chemical and Biological Center (ECBC)coreStrategic or Co-development PartnerGuild Associates developed the original A200 Decontamination Sorbent and the M100 Equipment Decontamination Kit operational procedure under contract with ECBC in the early 2000s. Also developed the M98 Guard Bed in collaboration with ECBC and NSWC Dahlgren. Ongoing contract work for CBRN defense products.
• NSWC Dahlgren (Naval Surface Warfare Center)coreStrategic or Co-development PartnerCollaborated with ECBC and Guild Associates on the M98 Collective Protection Filter Guard Bed development. The guard bed removes battlefield contaminants upstream of the M98 filter, extending filter life by over 25%. Research enabled through a Rapid Innovation Fund award.
• Montauk EnergyminorStrategic or Co-development PartnerMontauk Energy operates the Humble Renewable Energy landfill gas project where Guild Associates' Equilibrium PSA equipment provides N2 removal from landfill gas for pipeline injection. Contact: Damon McClenan.
• DARPAcoreStrategic or Co-development PartnerGuild BioSciences (division of Guild Associates) holds contracts with DARPA to develop recombinant organophosphorus hydrolase (OPH) enzyme, confirmed to be a 25x improvement over wild-type at degrading nerve agent VX.
• DTRA (Defense Threat Reduction Agency)coreStrategic or Co-development PartnerDTRA contracts fund development of OPH enzymes and LumiPhage biosensors (BRAVES system for detecting Bacillus anthracis). DTRA chem-bio Wide Area Decontamination program funded bacteriophage development in collaboration with Army ERDC.
• Army Engineer Research and Development Center (ERDC)coreStrategic or Co-development PartnerGuild BioSciences collaborated with ERDC on the LumiPhage biosensor technology (BRAVES) for detecting bacterial pathogens, funded by DTRA's chem-bio Wide Area Decontamination program.
• Heathcoat FabricsminorStrategic or Co-development PartnerGuild Associates and Heathcoat Fabrics are jointly developing adsorbent fabrics for use in a wide variety of CBRN applications. Guild exhibited at CBRN Expo Ft. Leonard Wood in adjacent booths, showcasing the joint innovation.
• Smithfield Foods / Duke EnergycoreStrategic or Co-development PartnerSmithfield Foods and Duke Energy released a joint press release (January 8) announcing RNG production at Smithfield's Tar Heel, NC pork processing facility. Guild Associates' Molecular Gate PSA equipment transforms biogas into RNG under this partnership.
• The Coalition For Renewable Natural Gas (RNG Coalition)minorGTM or Marketing PartnerGuild Associates is a member of the RNG Coalition. Paul Baker delivered a webinar presentation ('Monetizing Small Digesters') for the RNG Coalition Wednesday Webinar Series, promoting Guild's Microgate/Nanogate products.
• American Biogas CouncilminorGTM or Marketing PartnerGuild Associates is a Support Sponsor of the Biogas Americas Conference. Guild exhibited at booth #716 and staff engaged in discussions about biogas processing applications.
• EcoEngineersminorImplementation/ SI/ Consulting PartnerPaul Baker (Guild Associates, Business Development Manager) teamed with Sean Gasson (Regulatory Consultant with EcoEngineers) to present at the WWETT Conference on food waste digestion and EPA's RFS monetization rules.
• Kintrex Energy / EDLcoreStrategic or Co-development PartnerKintrex Energy and EDL partnered on the Southside Landfill RNG project (Indy High BTU) — Indiana's largest RNG facility — where Guild Associates' Equilibrium Nitrogen Rejection PSA is a key component. Ribbon cutting held March 4, 2002.
• TetraTechminorImplementation/ SI/ Consulting PartnerTetraTech consultant Tom Bilgri chaired the SWANA SOAR panel session on RNG Processing where Guild Associates' Mike Knapke and Dan Moeller spoke as panelists.
• AmerescominorChannel Partner/ Reseller/ DistributorTom Kappelmeier of Ameresco participated alongside Guild Associates employees in the SWANA SOAR RNG Processing panel session.

Scale indicators8 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Carbotech (Linde Engineering): Linde Engineering's Carbotech division supplies PSA systems for biogas upgrading, directly overlapping with Guild's Molecular Gate-based NanoGate, MicroGate, and Equilibrium N2 Rejection offerings. Both compete for landfill, wastewater, and agricultural RNG projects across North America and Europe.
• Greenlane Biogas: Greenlane supplies PSA, membrane, and biological upgrading systems for landfill gas and biogas-to-RNG projects. It is the most commonly cited direct competitor to Guild's Molecular Gate platform, particularly on larger landfill and dairy digester projects.
• Xebec Adsorption (Samsung Engineering): Pre-acquisition Xebec Adsorption was a leading manufacturer of PSA-based biogas upgrading, oxygen generation, and hydrogen purification systems — directly comparable product line to Guild's PSA business. Acquired by Samsung Engineering in 2022, it remains a relevant reference point for Guild's PSA positioning and competitive pricing benchmarks.
• Cirmac: Cirmac develops and manufactures PSA gas separation systems for hydrogen, biogas upgrading, and industrial gas applications, directly comparable to Guild's Molecular Gate and Equilibrium PSA offerings in the biogas upgrading and gas processing equipment category.
• Smiths Detection: Smiths Detection is a leading CBRN detection, identification, and decontamination equipment supplier to defense, homeland security, and first-responder markets, overlapping directly with Guild's A200/GA200 sorbents, M98 guard beds, Zarbon media, and LumiPhage biosensor product lines.
• HDT Global: HDT Global designs and manufactures containerized military systems including shelters, kitchens, laundry, and expeditionary equipment for DoD customers. It is a direct peer to Guild's Military Systems division (LADS, MIRCS, training simulators) within the same DoD procurement channels.

Broad incumbents

• Honeywell UOP: Honeywell UOP is a broad incumbent supplying gas processing technology, catalysts, and adsorbents to refining, petrochemical, and RNG markets. Its portfolio (including Separex membranes, Polybed PSA, and various adsorbents) competes with Guild's PSA and catalyst offerings across much larger and more diversified accounts.
• Air Liquide: Global industrial gas major supplying gases, equipment, and services to biogas, hydrogen, and clean energy markets. Its large-scale gas processing and PSA capabilities, plus balance sheet, represent a broad competitive incumbent to Guild's specialized Molecular Gate-based offerings.
• Battelle Memorial Institute: Battelle operates a major CBRN defense, decontamination, and biosensor R&D business, including government contracts with ECBC, DTRA, and DARPA — directly overlapping with Guild BioSciences' chem-bio defense franchise and creating a larger, more diversified incumbent competitor.

Others

• Brightmark: Brightmark is a leading US RNG project developer that procures biogas upgrading equipment (PSA, membrane) for its dairy and landfill-to-RNG projects. It is not a direct equipment competitor but rather a customer-side counterpart that purchases technology similar to Guild's Molecular Gate platform.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/guildassociates
• LinkedInlinkedin.com/company/guild-associates

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Guild Associates, Inc.