Which method is used to change a liquid hazardous material into a solid state for safer handling and disposal?

• A. Solidification
• B. Dispersion
• C. Neutralization
• D. Dilution

Answer: (A)

The method used to change a liquid hazardous material into a solid state for safer handling and disposal is solidification. This process involves altering the physical state of a liquid hazardous substance so that it becomes solid, which can significantly reduce the risk associated with handling and transporting the material.

Solidification can involve the addition of various agents that promote the formation of a solid mass, effectively trapping the hazardous components and minimizing the potential for spills or leaks. This approach is particularly important for hazardous materials that are difficult to manage in their liquid state due to their toxic or reactive properties.

Other methods, such as dispersion, neutralization, and dilution, do not achieve the goal of converting liquid hazardous materials into a solid. Dispersion involves spreading the hazardous material, neutralization refers to chemically reacting a hazardous substance to make it less harmful, and dilution reduces concentration but does not change the state of the material. Thus, solidification stands out as the most effective and relevant method for managing liquid hazardous wastes.