Circular Economy Solutions
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Carbonation Leads to Sustainability

From Waste to Graphene

Researchers have discovered that small amounts of biomass waste can be used to produce high-quality graphene

This method could offer a sustainable and cost-effective alternative to traditional methods (i.e., Hummers’ method) that rely on fossil fuels, sophisticated equipments and produce harmful byproducts.

Why Graphene?



Highly conductive

Graphene is 200 times stronger than steel, making it one of the strongest materials known to man.

With the thickness of one atom, graphene is lighter than paper and  is the thinnest 2D material in the world.

Graphene conducts electricity and heat with incredible efficiency, making it an invaluable asset in technological productions and applications.

Potential Applications

Using waste biomass to synthesize multi-purpose graphene opens up new opportunities for sustainability and innovation. 

Electronic Devices 

Graphene's durability and flexibility makes it a great material for touchscreens. Its conductive ability also makes it ideal for use in electronic devices, creating faster and more efficient devices. 

Building Materials

Graphene is a game-changing material that can drastically improve the strength and durability of everything from concrete to polymers.

Energy Storage 

Graphene’s conductivity makes it useful for developing next-gen batteries, supercapacitors, and solar cells, demonstrating its potential for revolutionizing the energy industry.

Carbonation Leads to Sustainability

Circular Communities

Carbon Sequestration

Waste Diversion

Renewable Materials

Carbon Sequestration

Why is Biochar Important?

Biochar is a solid "charcoal liked" material generated from the carbonization of biomass. Biochar has been applied in agricultural activities as a soil amendment. It helps retain soil's nutrients and improve soil functions. We convert waste biomass to biochar is to achieve carbon sequestration. It reduces emissions from biomass that would otherwise naturally degrade to greenhouse gases.

Biochar+ (Engineered Biochar)

Biochar is mainly used as a soil amendment and for carbon sequestration. CLS Environmental Technologies has developed technologies to expand the uses of biochar beyond soil applications.

Our goals:
-Enhance the functions and performance of biochar
-Develop more value-added biochar based products.

Biochar+ Products - Circular Materials

CLS collects woody waste such as bamboo scraps and wooden pallets from construction sites and convert them back to construction materials.
Our goal with our construction materials project is to create circular material solutions for the construction industry. Cement is a carbon-intensive material. The cement is the source of about 8% of the world's carbon dioxide emissions. If the we can replace 1% of cement with biochar, it will be equivalent of growing hundred thousands of trees.

Circular Economy Project

We create Value-Added Products  & Circular Operations for Industries

Creating Innovative products with Waste

Integrating Circular Economy Solutions for Companies

Our Team

Pirry Leung

Founder & CEO

Pirry has worked in environmental technology for 15 years. He has also been involved in multiple sustainability startups as well as founding several environmetal tech startups.  

Oliver Yeung

Founder & CTO

Oliver has extensive R&D experience in photochemistry and green chemistry. Prior to joining CLS, he was a senior research fellow at the Hong Kong Polytechnic University. Oliver received his PhD in Chemistry from the University of Hong Kong (HKU)


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Waste Not, Innovate More