Nanocomposite photocatalysis system for rapid chloramine removal in water treatment

Overview

This technology addresses the challenge of chloramine removal in water treatment through a nanocomposite photocatalysis approach. Chloramine, a common disinfectant used in municipal water, must be removed before water can be used in sensitive applications such as home dialysis. The proposed solution combines titanium dioxide and graphene under UV illumination to achieve rapid, efficient chloramine degradation at a low cost. The technology is designed to be scalable through roll-to-roll film manufacturing, making it suitable for mass production and widespread deployment in residential water filtration systems.

Technical specifications

How it works:

• UV illumination breaks the N-Cl bonds in chloramine, producing amine and chlorine radicals
• These radicals undergo redox reactions, converting chloramine into nitrate and nitrite
• Titanium dioxide photocatalysis accelerates radical generation, speeding up the degradation process
• Graphene enhances the radical production rate through efficient electron transfer, further boosting degradation efficiency
• The nanocomposite can be deposited on flexible substrates for scalable, roll-to-roll film production

Key features:

• Low-cost materials and processing compared to alternative chloramine removal methods
• Fast degradation rate exceeding standard UV-only treatment
• Flexible substrate compatibility for manufacturing scalability
• Potential for photoelectrocatalysis enhancement through applied bias potential

Technology readiness level

This technology is currently at an early-to-mid stage of development. The research team has outlined a clear validation pathway: initial laboratory validation of the combined photocatalysis degradation rate compared to UV-only treatment, followed by substrate deposition and photoelectrocatalysis optimization, and culminating in the design and fabrication of a small-size chloramine filter for home dialysis applications. The technology has not yet been validated in a real-world or commercial setting, but the proposed development plan provides a structured path toward a functional prototype suitable for residential water treatment.