CHAR Technologies Ltd. has reported initial results from independent laboratory testing evaluating its High-Temperature PyrolysisPyrolysis is a thermochemical process that converts waste biomass into bio-char, bio-oil, and pyro-gas. It offers significant advantages in waste valorization, turning low-value materials into economically valuable resources. Its versatility allows for tailored products based on operational conditions, presenting itself as a cost-effective and efficient More (HTP) technology on wastewater biosolids contaminated with per- and polyfluoroalkyl substances (PFAS). Conducted by an accredited third-party laboratory in the United States using EPA Method 1633, the analysis confirmed that all 40 targeted PFAS compounds were reduced to below detection limits in the resulting biocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More. The test program evaluated biochar generated under steady-state operating conditions across five separate sampling events in 2025. Based in Canada, the clean-technology developer is positioning its thermal processing platform as a permanent destruction pathway for hazardous synthetic compounds present in municipal sewage sludge.

The management and disposal of municipal wastewater biosolids present a growing regulatory and operational challenge globally due to widespread PFAS contamination. These synthetic “forever chemicals” resist natural degradation and accumulate within human food chains, agricultural soils, and water supplies. Traditional handling practices, including landfilling, direct land application, and liquid filtration, primarily transfer or concentrate PFAS contaminants rather than degrading them. As municipal treatment operators face stricter environmental limits regarding contaminant dispersion, the market requires scalable processing technologies capable of destroying recalcitrant fluorinated compounds while managing high volumes of organic waste.

To address this persistent contamination issue, CHAR Technologies processed municipal biosolids through its proprietary HTP system, which heats organic waste streams to elevated temperatures in an oxygen-free environment. The solid output was sampled after two hours of continuous operation to ensure steady-state conditions before undergoing evaluation under EPA Method 1633. This testing methodology utilizes liquid chromatography-tandem mass spectrometry paired with isotope dilution to quantify 40 specific linear and branched PFAS isomers across nine chemical classes in solid matrices. The high thermal energy within the HTP process cleaves the carbon-fluorine bonds that define PFAS structures, preventing these compounds from persisting in the solid carbon fraction.

The laboratory analysis demonstrated complete non-detection of all 40 targeted PFAS compounds in the solid biochar product, establishing that the material is free of the initial feed contaminants within analytical limits. Converting contaminated sewage sludge into clean biochar provides municipalities with a reduced waste volume and a marketable carbon material suitable for soil applications or industrial use. To complete the regulatory validation required by the U.S. Environmental Protection Agency, CHAR Technologies is conducting additional testing to measure PFAS presence in the gaseous and aqueous process streams. The company targets the end of Q4 2026 to submit its complete data package for formal regulatory review.