Our company has been at the forefront of researching the beneficial uses of Municipal Solid Waste Incineration Fly Ash and Bottom Ash since 2010. With our unique technology, we are able to treat MSWI Fly Ash with acid and nanocomposites, transforming it into a sand-like material and rendering the heavy metals resistant to leaching. We combine the treated Fly Ash with Bottom Ash to create a composite material “concrete-like” material that we’ve named Ashcrete.

Ashcrete is a dense material with an average weight of 1.8092 g/cm3, and it boasts excellent impermeability and a compressive strength of >3000 psi. One of the key benefits of our process is that it generates no residual waste, making it a 100% clean process. Additionally, during the process, metals >0.45mm can be recovered, contributing to the circular economy.

Our unique technology demonstrates that waste can be transformed into a beneficial material that helps to prevent millions of tons of ash from ending up in landfills. We are proud to be leading the way in sustainable waste management practices.

MSW Treated Fly Ash encapsulated in Bottom Ash
Ultra Tortuous Path inhibiting Liquids percolation

Why is the technology needed?

The technology developed by our team is crucial to addressing the growing problem of Municipal Solid Waste Incineration Ash generated from the combustion of MSW. Currently, ash residues from MSW combustion make up between 15-25% (by weight) and 5-15% (by volume) of the MSW processed, with the majority being sent to landfills, contributing to the waste management problem.

Our technology provides a sustainable solution by treating MSWI Fly Ash with acid and nanocomposites, transforming it into a sand-like material and rendering the heavy metals resistant to leaching. By combining the treated Fly Ash with Bottom Ash and a composite material, we create Ashcrete, a versatile “concrete-like” material with high compressive strength and impermeability. The use of Ashcrete prevents millions of tons of ash from ending up in landfills and contributes to a circular economy by recovering metals >0.45mm during the process.

In addition to being a sustainable solution, our technology generates no residual waste, making it a 100% clean process. Therefore, our technology is essential in addressing the growing problem of MSW ash and transforming waste into a beneficial material.


The Thermal Waste to Energy sector is responsible for releasing 41.4 million tons of CO2 yearly into the atmosphere in the U.S. This presents an urgent need to find ways to capture and store this CO2 and transform the sector into a source of green energy. One promising solution is to store the CO2 in the ash byproduct generated by the incineration process. This would make the Waste to Power sector carbon neutral, as all of the CO2 emitted can be absorbed and stored.

In addition, the ash can be transformed into a “Super Green Concrete” that not only prevents it from reaching landfills but also absorbs and stores an additional 7.2% of CO2 from other sources. This transformation would contribute to a circular economy, preventing millions of tons of waste from ending up in landfills.

Moreover, the resulting “Green Concrete” from ash will be a Photocatalytic concrete that can break down air pollutants such as CO2 through a process called photocatalytic oxidation. This reaction is produced by Titanium dioxide (TiO2), which is commonly present in the Bottom Ash.

By capturing and storing CO2 in the ash byproduct and transforming it into a beneficial material, the Waste to Power sector can become a source of green energy and contribute to a sustainable future.


1. EPA. EPA gov emissions. [Online] JULY 27, 2021. [Cited: October 7, 2021.] https://www.epa.gov/ghgemissions/overview-greenhouse-gases.

2. Michigan, University of. Center for Sustainable Systems. MUNICIPAL SOLID WASTE FACTSHEET. [Online] 2017. [Cited: October 7, 2021.] https://css.umich.edu/factsheets/municipal-solid-waste-factsheet.

3. Energy Recovery Council. 2018 Directory of Wasto to Energy Facilities. s.l. : Energy Recovery Council, 2018.

4. zerowasteeurope. Understanding the carbon impacts of Waste to Energy incineration. Zero Waste Europe. [Online] MAR 18, 2020. [Cited: October 7, 2021.] https://zerowasteeurope.eu/2020/03/understanding-the-carbon-impacts-of-waste-to-energy/#:~:text=Each%20tonne%20of%20MSW%20incinerated,wood%2C%20paper%20and%20food)..

5. Baoguo , Han, Liqing , Zhang and Jinping, Ou. Photocatalytic Concrete. Springer. [Online] Springer, June 13, 2017. https://link.springer.com/chapter/10.1007/978-981-10-4349-9_17#:~:text=Photocatalytic%20concrete%20is%20a%20type,the%20involvement%20of%20light%20illumination..


The Zero Ash in Landfills Initiative aims to address the significant environmental impact of Waste Incineration Ash (WIA) disposal. Every day, millions of tons of WIA are deposited in landfills, creating a potential hazard to ground and surface water, air, and soil. WIA comes from a variety of sources, such as Municipal Solid Waste (MSW) Incineration, Hazardous Waste Incineration, Medical Waste Incineration, Industrial Waste Incineration, Water Treatment Plant Sludge Incineration, Biomass Incineration, among others.

At Ashcrete Technologies, we have developed a unique technology that can transform and upcycle WIA into a beneficial composite material, which we call “Ashcrete”. This material can be used instead of concrete and is a true Ecological or Green concrete since it uses WIA instead of traditional aggregate (sand and gravel).

Our initiative aims to transform the WIA waste streams generated daily and upcycle the Ash that has been disposed of in landfills into useful structures, such as roads, bridges, barriers, extreme weather condition structures, marine environments, and more.

We have already tested our technology worldwide with input from governments, professors, and scientists. In New York State, we have applied for a MSWI Combined Ash Beneficial Use Determination, (Status: Pending BUD Petition No. 1395-0-00).

At present, we are engaged in discussions with Metro-Vancouver and the BC Ministry of Environment in Canada to develop an effective strategy for recycling and transforming their MSWI Fly Ash and MSWI Bottom Ash waste streams. Our goal is to convert these materials into a useful resource, creating a positive impact on the environment and promoting sustainability.

Our project proposal for ash and other waste characterization at Semakau landfill in Singapore has been submitted to the National Environmental Agency, which holds responsibility for ash beneficial use permits. We are eagerly awaiting their response and hope to obtain the necessary permits to proceed with our project. Our goal is to gather valuable data on the waste materials present at the landfill and explore innovative ways to transform them into useful resources, thus promoting sustainable waste management practices.

This video will give you an idea of what needs to be done, this case example is the Municipal Solid Waste Incineration Ash Monofill located in Babylon, Long Island – New York, USA, which is about to reach full capacity.

Municipal Solid Waste (MSW) Incineration Bottom Ash and Combined Ash transformation.

Ashcrete Technologies has developed a revolutionary technology that can transform Municipal Solid Waste (MSW) Incineration Bottom Ash and Combined Ash (MSW Bottom Ash + MSW Fly Ash) into a concrete-like composite material that is suitable for use in a variety of applications such as roads, bridges, barriers, and marine structures. This innovative process has the potential to transform waste streams into a sustainable resource, contributing to a circular economy.

The transformation of ash into Ashcrete takes place at the atomic level, where the ash ions are stimulated by nanocomposites, allowing their absorption by the products generated during the hydration reaction. This absorption can be categorized into physical and chemical absorption, with the former being caused by van der Waals forces between particles and the latter being the result of chemical bond formation.

Ashcrete is a true green concrete, made using 100% waste materials (MSW Incineration Ash), with a dense matrix that prevents harmful solutions from penetrating the material. This eliminates the mechanisms that can cause conventional concrete to deteriorate, resulting in significantly improved durability properties. Tests including permeability, freeze-thaw, scaling, abrasion, resistance to ASR, and carbonation have shown that Ashcrete outperforms conventional concrete in these areas.”

Ashcrete Appearance

Ash Ion Migration

The below table shows the migration of elements, in yellow raw ash elements, in green XRF elemental analysis of Ashcrete (Composite concrete-like material made with MSW I. Ash).

X-ray Fluorescence Spectrometer

Ashcrete Strength

At 28 days Ashcrete surpasses the 30 Mpa (>4000 psi) mark.


SW-846 Test Method 1311: Toxicity Characteristic Leaching Procedure


From Ash to Precast® Ashcretech®

From Ash to Precast®

Ashcrete Technologies we can transform into a beneficial structure all the Combined Ash resting in monofills, Combined Ash with other non-incinerable materials (debris, waste glass, waste ceramics, other waste incineration ash) and fresh bottom ash and transform these waste streams into a beneficial Impermeable Ashcrete Structures for use either in Infrastructure development or Marine environments.

Services/About Us

Research and Pro bono Consulting

We started our journey with a vision to improve the well-being of humanity and secure a brighter future for our children. Since 2010, we have been conducting research on the beneficial uses of hazardous waste incineration ash, CO2 capture technologies, and the storage of CO2 in ash.

Thanks to the collaboration and support of various governments, universities, and scientists worldwide, we have successfully transformed municipal solid waste incineration ash into a valuable resource for infrastructure development. It’s worth noting that all our research has been self-funded, and we have not received any financial support from any government, entity, or individual.

If you are researching any beneficial uses of ash, please do not hesitate to contact us.

Johane Duque Ph.D. Owner/Research Leader

Landfill and Ash Monofill MSW I. Ash Recycling

Various countries around the world have adopted different methods for storing MSW I. Ash, with some opting to store only Bottom Ash in monofills while treating and storing Fly Ash separately in landfills. Others have combined the two types of ash and stored them together in monofills (USA), while some countries store MSW I. Ash alongside other non-incinerable materials in landfills due to space constraints.

At Ashcrete Technology, we have developed a recycling process that can transform any type of Ash from landfills or monofills into useful structures that can be employed in a variety of projects, such as land reclamation, sea barriers, roads, bridges, and barriers.

Ash Landfill Characterization

Municipal solid waste (MSW) incineration is a widely used method for waste management that aims to reduce the volume of waste that is sent to landfills. However, the ash produced from the incineration process is still a significant environmental concern that requires proper disposal. MSW incineration ash monofills have been utilized as a means of disposing of the ash, but the environmental risks associated with their use necessitate proper characterization.

Characterizing an MSW incineration ash monofill is important to understand the potential environmental impacts that may arise from its operation. The characterization process involves gathering data on the physical, chemical, and biological properties of the ash monofill, which can help to identify potential hazards such as leaching of contaminants into the environment, air pollution from volatile organic compounds and heavy metals, and potential damage to soil and vegetation.

In addition to environmental risks, there are also potential health risks associated with MSW incineration ash monofills. Some of the contaminants present in the ash can be harmful to human health if they are released into the environment or if people come into direct contact with them. Therefore, characterizing an MSW incineration ash monofill is essential to ensure that the landfill is managed properly, and any risks to the environment and human health are minimized.

Municipal Solid Waste Incineration Bottom Ash Recycling

Welcome to Ashcrete Technologies, where we are committed to transforming ash into a valuable resource. We are proud to offer our innovative solution for recycling bottom ash, a byproduct of the combustion of Municipal Solid Waste or any other Waste, into a beneficial material that can be used in a variety of applications.

Our process involves recovering ferrous and non-ferrous metals greater than 0.45 mm from the bottom ash, while simultaneously encapsulating any heavy metal contaminants at the nano level. This ensures that the resulting material is safe and environmentally friendly.

One of the most exciting aspects of our process is that the ash ceases to exist, and is instead transformed into a new material that has numerous beneficial properties. This material can be used as a replacement for traditional construction materials, such as cement and concrete, and has been shown to be just as strong and durable, while also being lighter and more sustainable.

At Ashcrete Technologies, we are committed to sustainability and reducing the environmental impact of industrial processes. Our bottom ash recycling process is just one example of how we are turning waste into a valuable resource, while also contributing to a more sustainable future.

If you have any questions about our process or would like to learn more about how we can help your organization reduce its environmental impact, please don’t hesitate to contact us. We look forward to working with you!

Municipal Solid Waste Incineration Fly Ash Treatment and Recycling

Recycling Municipal Solid Waste Incineration fly ash requires treatment with acid, which upgrades it into a sand-like material suitable for mixing with other materials such as bottom ash, concrete debris, waste ceramics, waste glass, or sand. The alkalinity of the fly ash must be maintained within a specific range to prevent the solubility of lead or cadmium. During the process, soluble lead is converted into insoluble lead phosphate compounds chloropyromorphite and hydroxypyromorphite, while cadmium is converted into cadmium carbonate or cadmium hydroxypyromorphite. Both compounds become insoluble at pH levels above 8.0.


Ashcretes or Impermeable concretes made with MSW Incineration have a wade range of possible uses in Precast Applications.

From Landfill to Blocks for Land Reclamation

From Combined Ash monofill to Sea Wall

From Fresh Bottom Ash or Combined Ash to Precast Structures

Road Slabs and Jersey Barriers
Retaining wall
Bridge decks
Interlocking blocks (flood prevention and barrier)
Storm Protection