In-situ iron-modified zeolite barrier for selenium plume control
An innovative in-situ reactive barrier using iron-modified zeolite designed to control selenium pollution in groundwater. It enhances selenium attenuation by converting it into less mobile forms while also managing arsenic risks. This solution is modular, low-maintenance, and adaptable to site-specific conditions, making it suitable for various environmental remediation applications.
Overview
The in-situ iron-modified zeolite barrier offers a groundbreaking approach to managing selenium pollution in groundwater. By utilizing a permeable reactive barrier or injectable reactive media, this solution leverages iron-modified zeolite's ability to adsorb and reduce selenium oxides into less mobile forms. This technology not only targets selenium attenuation but also addresses co-occurring arsenic risks by retaining arsenic on iron phases under controlled conditions. Its modular nature allows for customization based on specific site conditions, providing a low-maintenance and efficient means of environmental remediation.
Technical specifications
Key features:
- Utilizes iron-modified zeolite, including iron oxide- or zero-valent-iron-coated zeolite
- Promotes adsorption and reduction of selenium species, specifically selenite and selenate
- Addresses arsenic mobilization by favoring iron-bound arsenic retention
- Designed for in-situ deployment as a permeable reactive barrier or injectable reactive media
- Bench testing includes optimization for media formulation, hydraulic performance, and contaminant stability
Technology readiness level
The technology is currently at Technology Readiness Level 3, having undergone initial bench testing with site groundwater to optimize various parameters. Future phases include flow-through column testing and optimization for field deployment, ensuring robust performance and efficiency in real-world conditions.
About Mindanao State University - Iligan Institute of Technology
Mindanao State University–Iligan Institute of Technology is a public STEM-focused institute and autonomous unit of the MSU system in Iligan City. Industry engages through the Premier Research Institute of Science and Mathematics (PRISM), whose technical and laboratory services are institutionalized to serve internal and external clients. On campus, FAB LAB Mindanao enables rapid prototyping, and the iDEYA Center of Innovation and Technopreneurship runs a technology business incubator that links startups with mentors and partners. Research and extension are coordinated by the Office of the Vice Chancellor for Research and Extension. Funding comes from national agencies such as the Department of Science and Technology and the Commission on Higher Education; a dedicated technology transfer and IP support office facilitates licensing and commercialization.
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