The Altent Hydrothermal Process

Our novel hydrothermal process efficiently utilizes wet organic waste for the production of clean fuels and minerals, providing cost savings and achieving zero waste targets.

Accelerating Earth's Natural Processes

Deep in the oceans, hydrothermal processes occur naturally due to high water pressure, geothermal heat and the presence of water. This is how fossil fuels are formed in the Earth for millions of years.


By optimizing the process conditions, we have invented the Altent Hydrothermal Process to accelerate this natural phenomenon to mankind's advantage.

Hydrothermal Vent
Ifremer (2012). Cheminée hydrothermale active. Ifremer.

How it works

The Altent Hydrothermal Process is a chemical process which utilizes the properties of water under high temperature and pressure to break down organic materials and separate minerals.

Altent Hydrothermal Process


In this step, the solid particle size, water content, and solution homogeneity of the wet waste is adjusted to optimal levels. First, the wet waste is pulverized into fine particles. Then, recycled water is added if necessary. Finally, the solution is mixed thoroughly to ensure flowability and pumpability.


The pre-treated wet waste is heated and pressurized in our specialized reactor. Under our controlled process conditions, water becomes a powerful solvent, reactant, and catalyst in the Altent Hydrothermal Process. Here, the organic components are broken down into clean fuels and the minerals are separated.

Product Processing

In the final step, the fuel composition is adjusted depending on the final application and stored if necessary. Minerals are cleaned and processed for sale, while excess clean effluent water is discharged.

Competitive Advantages

Our innovative process overcomes the challenges faced by current technologies and outperforms in all areas

No Drying Required

High efficiency without energy-intensive drying


Reaction in Minutes

Large capacity with a small footprint

Mineral Recovery

Recover N, P, K nutrients reducing resource depletion

Feedstock Flexibility

Accepts a wide variety of wet feedstock and even wastewater

Clean Effluents

Effluent water fully meets environmental standards for discharge

Cost Recovery

Waste cost is recovered from the sale of products

Industries We Serve

We can handle a wide range of difficult waste streams from multiple industries.

Maritime and Petrochemical Industry

Maritime & Petrochemical Industry

Waste oil and sludge from crude oil refining, storage, and transportation are hazardous waste that are difficult and costly to treat. As a result, many companies turn to illegal dumping to avoid disposal costs.
Wastewater and Sewage Industry

Wastewater & Sewage Industry

Wastewater and sewage sludge from residential and industrial sources have to be properly treated before discharge. Current treatment technologies require large land spaces and sometimes overflow during heavy rain.
Food and Agricultural Industry

Food & Agricultural Industry

Food and farm waste are largely underutilized because current technologies are unable to meet the scale and demand. It is common for these types of waste to be dumped on open lands for natural composting, which emits methane, a potent greenhouse gas.


Wet organic waste is organic waste with a high water content of more than 50% typically. Some examples are oil sludge, sewage sludge, food waste, and livestock manure.

Current waste treatment technologies are unable to realize the potential of wet waste, resulting in high disposal costs for companies. Many companies turn to illegal dumping to avoid disposal costs, causing significant environmental damage.

During continuous operation, our system utilizes the energy outputs we generate to power itself, making it self-sustaining. No external energy input is required once the plant is operational.

As engineers, we developed our technology internally guided by our technical advisor. Prior to founding Altent Renewables, we started off with a few conceptual ideas, followed by simple lab experiments to prove our theories.

We are always interested in collaborations, partnerships, or investments. If you would like to contribute to our progress, feel free to contact us for a discussion. We'd love to have a chat!

Partner with us

Join us today on our journey to make wet waste a valuable resource