Company Filing History:
Years Active: 1998-2003
Title: Innovations by Steven A. Chisick in Environmental Remediation
Introduction
Steven A. Chisick is a notable inventor based in Durham, NC, who has made significant contributions to the field of environmental remediation. With a total of five patents to his name, his work primarily focuses on the chemical fixation of radionuclides and radioactive compounds in contaminated soils and materials. His innovative approaches aim to reduce the leachability and solubility of hazardous substances, thereby enhancing environmental safety.
Latest Patents
Chisick's latest patents include a groundbreaking process for the chemical fixation of radionuclides and radioactive compounds present in soils, solid materials, sludges, and liquids. This process converts radionuclides and other radioactive compounds into low-temperature Apatite-Group structural isomorphs, which are generally phosphatic and exhibit properties such as being insoluble, non-leachable, non-zeolitic, and pH stable. The process involves contacting the materials with a suspension containing sulfate, hydroxide, chloride, fluoride, and/or silicate sources along with a phosphate anion. The resulting Apatitic-structure end product is chemically altered from the initial material, reduced in volume and mass, and can be void of free liquids. It also demonstrates high levels of thermal stability, making it effective in the presence of heat-generating nuclear reactions. Notably, this process occurs at ambient temperature and pressure, making it practical for various applications.
Career Highlights
Chisick is currently associated with Sevenson Environmental Services, Inc., where he continues to develop innovative solutions for environmental challenges. His expertise in chemical fixation processes has positioned him as a leader in the field of environmental remediation.
Collaborations
Throughout his career, Chisick has collaborated with esteemed colleagues such as Karl William Yost and Dhiraj Pal. These collaborations have further enriched his research and development efforts, leading to advancements in the field.
Conclusion
Steven A. Chisick's contributions to environmental remediation through his innovative patents demonstrate his commitment to addressing critical environmental issues. His work not only enhances the safety of contaminated sites but also paves the way for future advancements in the field.