Why we're the best

We save you money on wastewater ammonia treatment. We save you time and energy due to high efficieny. Our technologically advance natural and organic fertilizers perfectly meet your plant nutrients and soil amendments requirements.

Save Money

We save you money on ammonia removal from ammonia-rich wastewater. Our technology does not require costly solid/liquid separation. This saves operational cost. Our high- efficiency nitrogen (N) and phosphorus (P) fertilizers enable our customers to lower their application rates, thereby saving money.

Best Quality

Our VaSA System guarantees near-complete removal and recovery of ammonia into ammonium sulfate fertilizer. We are the first to recover ammonia as a pure solid product rather than impure solution. The recovered fertilizer has a N-P-K rating of 21-0-0 and ≥98% ammonium sulfate compared with other wastewater-derived solid fertilizers that generally have <6% N.

Customer Care

We pride ourselves with excellent customer service. Not only do we meet but also exceed every expectation by our customers. Our customers are core to our business so we ensure they feel valued and get nothing but the best services.

Our Team

Our Team consist of industry-leading experts in the wastewater treatment landscape. These experts have won many grants and awards which demonstrates their capabilities in the field and are committed to the advancement of nutrient recovery technologies in the water/wastewater industry.

Fred Agyeman, Ph.D

FOUNDER/CEO

Dr. Agyeman has developed a strong interest and is committed to pioneering the commercial landscape of wastewater-based fertilizers. He completed a master's research on anaerobic digestion and doctoral research on anaerobic digestion and ammonia recovery. After receiving his PhD degree, he founded Kaya Fertilizers LLC, to commercialize the patented Vacuum Stripping and Absorption (VaSA) technology for ammonia recovery. His interest in technology transfer started about a decade ago when he worked at a small business to develop business models for a resource recovery technology through the NEXUS-NY Clean Energy program. In 2016, his team was awarded a grant to demonstrate the recovery of biogas for use as clean energy. He has twice completed the NSF-ICORPS experiential entrepreneurship fellowship program, primarily investigating the market potential of Waste-to-Resource Technologies. His team received Acceleration of Cleantech Entrepreneurship and Economic Development (XCEED) grants and was later funded by Partnership for Innovation-Technology Transfer grant. In 2012, he was one of the lead recipients of a Student Design Competition for People, Prosperity and the Planet (P3) Award for struvite recovery from dairy manure.

Wendong Tao, PhD/P.E.

Technical Advisor

Dr. Wendong Tao is a Professor and Professional Engineer of Environmental Resources Engineering at SUNY ESF. He has been developing sustainable technologies for wastewater treatment and resource recovery from solid and liquid wastes in partnership with municipal wastewater treatment plants, dairy farms, engineering firms, and government agencies. He was the key inventor of the patented VaSA technology for ammonia recovery. His position is a nonremunerated role and voluntary.

Products & Services

Our Vacuum Stripping and Absorption system is the most efficient ammonia recovery system in the industry. We offer ammonia recovery services for high-strength wastewater. We are experts in producing ammonium sulfate fertilizer. We also manufacture natural and organic struvite fertilizers.
VaSA Ammonia Recovery System

VaSA Ammonia Recovery System

Produces Ammonium Sulfate

VaSA couples vacuum thermal stripping and acid absorption to pull ammonia out of ammonia-rich wastewater to form granular ammonium sulfate, (NH4)2SO4, a sellable nitrogen fertilizer and reagent-grade chemical. Utilizing optimal temperature and vacuum pressure operating conditions, boiling is achieved at a temperature much below the normal boiling temperature of 100C at atmospheric pressure of 101.3 kPa. The efficacy of VaSA has been verified with recovered ammonium sulfate granules purity greater than 98%. VaSA has been reviewed to be the most practical and the most efficient methods for ammonia recovery.

Anaerobic Digestion Enhancement

Anaerobic Digestion Enhancement

Boost Biogas / Improved Digestate

Vacuum Stripping and Absorption (VaSA) couples vacuum thermal stripping and acid absorption to pull ammonia out of ammonia-rich wastewater to form ammonium sulfate granules, a sellable nitrogen fertilizer. In addition to efficient removal of ammonia and production of ammonium sulfate, incorporating VaSA into anaerobic digestion avoids ammonia inhibition to methane-producing microorganisms, thus enabling stable anaerobic digestion at a higher organic loading rate. The vacuum-assisted low-temperature thermal and mild alkali treatment in the VaSA process enhances solids solubilization and biodegradability of digestate, thus further increasing methane production as stripped digestate is returned to the digesters. When employing VaSA to recover ammonia from digester effluent, it additionally improves dewaterability of digester effluent and raises biosolids from Class B to A.

Landfill Leachate Treatment

Landfill Leachate Treatment

reduces disposal cost

VaSA improves traditional by shifting the paradigm of wastewater treatment from contaminant removal to resource recovery. VaSA is a perfect fit for treating ammonia-ladened landfill leachate and saving leachate disposal cost. It fills the gap of an efficient, scalable ammonia recovery technology. VaSA can be adopted with modular designs, providing operational ease and flexibility of scaling up. Stripping ammonia out of a wastewater for production of ammonium sulfate can be a sustainable alternative to the energy-intensive Haber-Bosch process for ammonia synthesis, which consumes 3-5% of the world's natural gas production and accounted for 2.5% of the total U.S. greenhouse gas emission from industrial processes and product use sector in 2014. Due to the vacuum-assisted thermal and alkali treatment in the VaSA process, VaSA may also be employed for biomass pretreatment for biorefinery and biofuel production.

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272 Lorraine Avenue, Syracuse, New York, USA

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KAYA FERTILIZERS 
+1 216 406 7958
Mon - Fri, 8:00-17:00 EST

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Info@kayafertilizers.com

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