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Which chemical methods can treat hazardous waste?
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hazardous-waste management
Employees loading transuranic waste into a shipping container at Vallecitos Nuclear Center, a nuclear research facility in Alameda county, California.
In the context of hazardous-waste management, chemical treatment methods are utilized to alter the molecular form of waste materials to reduce their hazard. The primary chemical methods include:
- Ion exchange: A process used to swap ions between a solid substance and a liquid solution.
- Precipitation: A technique that causes dissolved substances to form solid particles that can be removed from the waste stream.
- Oxidation and reduction: Chemical reactions that involve the transfer of electrons to change the state of hazardous components.
- Neutralization: A process used to adjust the pH of waste to a neutral level, making it less reactive or corrosive.1
These methods are essential components of waste treatment, which, alongside source reduction and recycling, remains a necessary practice for managing hazardous materials.12