More and more companies are looking for sustainable solutions to manage their waste and reduce their carbon footprint. In this context, biochar is emerging as an effective and cost-efficient alternative that enables the valorization of organic waste while actively contributing to industrial decarbonization. Want to know how?

What is biochar?

Biochar is a carbon-rich material of plant origin with a porous structure, high chemical stability, and a significant fixed carbon content. Thanks to these properties, it is used as a soil enhancer, carbon sink, natural filter in water treatment, and functional additive in the manufacturing of plastics, asphalts, or cements. Its value lies not only in what it is, but in how it is obtained: from organic waste which, when properly treated, cease to be a problem and become an opportunity.

Where does biochar come from?

Biochar is produced from a wide variety of organic waste, making it a flexible and highly scalable solution for different sectors. The most commonly used feedstocks include:

    • Agricultural waste: pruning residues, rice husks, stalks, olive pits, grape pomace, coffee pulp, among other crop by-products.
    • Forest biomass: wood chips, sawdust, bark, or residues from non-commercial forestry operations.
    • Agro-industrial waste: by-products from the food and vegetable processing industries, such as rice husks, sugarcane bagasse, or residues from olive oil mills.
    • Sewage sludge and urban organic waste: when properly treated, these can be used in certain pyrolysis processes to produce biochar for non-agricultural industrial uses.
    • Industrial lignocellulosic waste: cellulose-, hemicellulose- and lignin-rich materials from the pulp or wood processing industries.

How is waste transformed into biochar?

Biochar production starts with a process called pyrolysis, in which organic waste is heated in the absence of oxygen until it reaches high temperatures. This thermal treatment causes a transformation of the material: the volatile fraction is released, and the carbon is retained in the form of a stable, porous solid. The result is a high-value material that, in addition to offering multiple applications, contributes to industrial decarbonization and the valorization of previously unrecoverable waste.

Uses of biochar: from the field to food and industry

    • Biochar offers surprising applications beyond the most well-known ones. These are other notable uses:
    • Soil enhancer: improves structure, retains nutrients and water, regulates pH, and activates soil microbiota. Ideal for degraded or arid soils.
    • Carbon sink: stores CO₂ in the soil for centuries, contributing to climate change mitigation.
    • Water treatment filter: adsorbs heavy metals, nitrates, and pollutants; useful for both rural and industrial water treatment.
    • Additive in construction materials: improves conductivity, insulation, and thermal resistance in cement, asphalt, and mortar.
    • Component in plastics and composites: adds strength, conductivity, and natural color while reducing the need for non-renewable minerals.
    • Agri-food and livestock:
        • In composting and animal bedding, it controls odors, reduces methane emissions, and improves the resulting compost.
        • As a feed additive for livestock, it enhances digestion, improves meat quality, and reduces enteric methane emissions, while also adsorbing toxins.
    • Flavoring for cooking/smoking: thanks to its natural origin and content of aromatic compounds similar to those in charcoal, it is used in barbecues and smoking to add a “rich” smoky flavor to meats, vegetables, and even pizzas.

Biochar is not just a material—it’s a strategy for the future. From waste management to decarbonization, including agriculture, advanced materials, and the improvement of industrial processes, its potential is enormous. But it all starts with one key question: what if your waste could become something more?

At SBS, we offer a technology demonstration service designed specifically for that purpose. We analyze your waste, subject it to thermal treatment under real conditions, and assess its potential to be transformed into biochar or other valuable products. It’s the most direct and reliable way to uncover the hidden potential of your waste stream and explore new technical, economic, and environmental opportunities for your business.