B. Sc Chemistry III & IV Semester NEP 2020 w.e.f June 2025
SEC00022764P
CHE/SEC/P/276
Lab Safety and Laboratory Practices
(Practical Paper)
Disposal of Hazardous Chemicals
Aim:
To study safe methods for the disposal of hazardous chemicals in the laboratory.
Principle:
Hazardous chemicals can cause harm to humans and the environment if not disposed of properly. Proper disposal methods are followed based on the nature of the chemical (toxic, corrosive, flammable, reactive) to ensure safety and prevent pollution.
Apparatus/Materials Required:
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Waste containers (labeled)
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Protective gloves and goggles
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Chemical waste disposal charts
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Neutralizing agents (if required)
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Laboratory manual
Procedure:
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Identify the type of chemical waste (acidic, basic, organic, toxic, etc.).
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Segregate waste into different containers (do not mix incompatible chemicals).
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Label the waste containers properly with name and hazard symbol.
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Neutralize acids and bases carefully before disposal (if permitted).
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Collect organic solvents separately for proper disposal or recycling.
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Do not pour toxic or heavy metal chemicals into the sink.
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Dispose of waste according to laboratory guidelines or hand over to authorized disposal agencies.
Types of Hazardous Waste & Disposal Methods:
| Type of Waste | Disposal Method |
|---|---|
| Acids/Bases | Neutralization before disposal |
| Organic Solvents | Separate collection & recycling |
| Heavy Metals (Cr, Pb) | Special hazardous waste disposal |
| Toxic Chemicals | Incineration or authorized disposal |
| Solid Waste | Proper labeled containers |
Observations:
| Sr. No. | Waste Type | Method Used |
|---|---|---|
| 1 | Acid | Neutralized |
| 2 | Organic solvent | Stored separately |
| 3 | Toxic chemical | Sent for disposal |
Result:
Safe disposal methods for hazardous chemicals were studied and understood successfully.
