Birchtech Corp. operates as an environmental technology and services company, specializing in crafting and delivering innovative solutions for the energy sector, both within the United States and globally. A core offering includes its advanced mercury capture systems, powered by its proprietary Sorbent Enhancement Additive (SEA) technology. This SEA technology is engineered to provide comprehensive mercury abatement, underpinned by a thorough scientific understanding of the intricate interactions involved in removing mercury from coal-fired flue gases. Beyond this, Birchtech is also engaged in the extraction and processing of rare earth elements. Furthermore, the company offers specialized water purification solutions, primarily focused on eliminating PFAS/PFOS contaminants from drinking water supplies. Previously known as Midwest Energy Emissions Corp., the company officially adopted the Birchtech Corp. name in October 2024. Its corporate headquarters are situated in Corsicana, Texas.