Nataphan Sakulchaicharoen

Project: Development of Zero-Valent Iron nanoparticles (nZVI) for subsurface remediation of chlorinated solvents

Zero-valent (Fe0) is a strong reducing agent, which can be used as an abiotic electron donor to promote the reductive dehalogenation of chlorinated hydrocarbons in a direct chemical reaction with iron. By decreasing the particle size of ZVI to nanoscale size, the ability to reduce the chlorinated hydrocarbon increases dramatically due to the significant increase in surface area. This improves remediation performance. The goal of the project is to synthesize nZVI systems that are stable in aqueous solution for in situ remediation of free phase chlorinated solvents that contaminate groundwater resources. Chlorinated solvent is a particularly persistent NAPL contaminant, frequently contaminating water sources for decades or centuries and are one of the most common contaminants at brownfield and industrialized sites. nZVI properties and structure are investigated in order to understand the dechlorination mechanisms, which in turn helps in designing of more efficient nZVI systems.

Personal Background

Zero-valent (Fe0) is a strong reducing agent, which can be used as an abiotic electron donor to promote the reductive dehalogenation of chlorinated hydrocarbons in a direct chemical reaction with iron. By decreasing the particle size of ZVI to nanoscale size, the ability to reduce the chlorinated hydrocarbon increases dramatically due to the significant increase in surface area. This improves remediation performance. The goal of the project is to synthesize nZVI systems that are stable in aqueous solution for in situ remediation of free phase chlorinated solvents that contaminate groundwater resources. Chlorinated solvent is a particularly persistent NAPL contaminant, frequently contaminating water sources for decades or centuries and are one of the most common contaminants at brownfield and industrialized sites. nZVI properties and structure are investigated in order to understand the dechlorination mechanisms, which in turn helps in designing of more efficient nZVI systems.