As the biochar industry experiences rapid growth, the absence of standardized definitions and classifications has become a pressing concern. This lack of uniformity not only lessens the industry’s credibility but also raises significant safety and environmental issues. Establishing comprehensive biochar standards is essential to ensure product quality, safeguard environmental health, and build consumer trust.

The Necessity of Biochar Standards

Biochar, a carbon-rich material produced through the pyrolysis of organic biomass, has gained attention for its potential in soil enhancement and carbon sequestration. However, the term ‘biochar’ encompasses a wide array of products with varying properties, depending on feedstock sources and production methods. This variability can lead to inconsistencies in product performance and potential environmental risks.

For instance, a study published in Environmental Health Perspectives highlights that biochar surfaces can contain numerous chemically active groups, such as ketones, carboxyl, and hydroxyl groups, which influence their interaction with soil contaminants. Without standardized production and testing protocols, biochar may inadvertently introduce pollutants into the soil, undermining its intended benefits.

Furthermore, certain biochar producers fail to acknowledge the inherent variability in their products, often relying on selectively reported laboratory results from isolated batch runs to market their material. In analogous industries such as clinical diagnostics and food manufacturing, rigorous quality control (QC) protocols—including routine, documented performance verification—are mandatory to ensure product consistency and safety. The biochar industry must adopt similar standards, requiring continuous quality monitoring and transparent reporting to validate material properties across production cycles.

Existing Efforts Toward Standardization

Recognizing these challenges, organizations like the International Biochar Initiative (IBI) and the European Biochar Certificate (EBC) have developed guidelines to define and test biochar products. The IBI Biochar Standards provide a standardized definition of biochar and outline testing procedures to ensure product quality and safety (Download PDF). Similarly, the EBC offers guidelines for sustainable biochar production, emphasizing the importance of using sustainably sourced biomass and maintaining low hazard use in agronomic systems. Although these frameworks, along with others, provide a good foundation, they are not universally recognized.

To assist producers and buyers alike, platforms like EcoHedge have also compiled practical rules of thumb for biochar quality and testing. For instance, they highlight that total carbon content should exceed 50% on a dry weight basis, and that volatile matter should typically fall below 30% for most agricultural applications. Additionally, biochar pH, electrical conductivity (EC), and heavy metal content should be routinely tested to ensure agronomic safety and performance. These simple guidelines, while not a replacement for regulatory standards, serve as critical checkpoints for market actors looking to maintain credibility and safeguard environmental outcomes.

Despite these initiatives, the absence of universally accepted standards continues to pose challenges. The International Organization for Standardization (ISO) has expanded its scope to include pyrogenic biocarbon through the formation of ISO Technical Committee 238 (Solid Biofuels), Working Group 11. This group is tasked with developing international standards to harmonize definitions, classifications, testing procedures, and sustainability criteria for biochar and pyrogenic carbonaceous materials (PCMs).

According to Biochar Europe, the ISO initiative aims to bridge the gap between fragmented national or voluntary schemes and a unified, scientifically rigorous global framework. This includes setting benchmarks for carbon stability, energy content, ash composition, and contaminant thresholds. Importantly, it also proposes labeling standards for end uses such as soil amendment, industrial applications, or energy products. However, the implementation of these standards is still underway, and stakeholder engagement remains crucial to ensure that the final protocols reflect real-world practices and environmental safeguards.

The Risks of Non-Standardized Biochar

The lack of standardization carries significant risks. Improperly produced biochar can contain contaminants such as polycyclic aromatic hydrocarbons (PAHs) and heavy metals, posing threats to soil health and potentially entering the food chain. A review article in Environmental Health Perspectives notes that biochar’s surface chemistry can lead to the adsorption of toxic chemicals, which may have unintended environmental consequences.

Moreover, the proliferation of biochar products without standardized testing and certification can undermine consumer confidence and hinder market growth. As the industry scales, the need for rigorous standards becomes increasingly critical to ensure that biochar delivers its promised benefits without adverse effects.

Verenovo’s Commitment to Excellence and Transparency

At Verenovo, we recognize the paramount importance of standardization in the biochar industry. Our approach is rooted in transparency, quality control, and environmental stewardship:

Controlled Feedstock Acquisition and Verification

We source our biomass from verified suppliers, ensuring that only uncontaminated, sustainable materials are used in our production processes.

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Rigorous Production Processes

Our proprietary pyrolysis technology operates under strict parameters to produce high-quality biochar with consistent properties. Verenovo is setting its sights on the 20-year horizon, understanding and supporting the biochar standards that are emerging and evolving globally. Our systems have been built from the ground up to align with—and exceed—those standards. In fact, we surpass the minimum recommended thresholds in every key category, including carbon content, ash levels, and contaminant control. This long-term view ensures that our technology and operations will remain resilient and future-proof as regulatory expectations grow.

Comprehensive Lab Testing and Open Reporting

We routinely put our biochar through extensive laboratory analysis to detect any contaminants or deviations from our quality standards. We openly share these results with our stakeholders, fostering trust and accountability. Verenovo was founded by a scientist whose background in wet bench laboratory research instilled a deep commitment to intellectual honesty and rigorous verification. That same mindset drives our company’s operations today. Our team includes technical experts with decades of R&D experience, and as a result, Verenovo has been invited to consult on the development of emerging biochar standards. This foundation of scientific integrity is central to how we operate and innovate.

By aligning our operations with emerging standards and actively participating in the development of industry guidelines, Verenovo is not only prepared to meet current expectations but is also poised to lead as regulations evolve.

Realizing the Potential of Biochar

The biochar industry’s potential to contribute to sustainable agriculture and carbon sequestration is immense. However, realizing this potential hinges on the establishment and adherence to robust standards that ensure product quality and environmental safety. Verenovo is dedicated to upholding these principles, setting a benchmark for excellence in the biochar market.

View References

Defining Biochar: The Imperative for Standardization in a Growing Industry