Beginner Topic 1061 of 1102 Biochemistry, Environment & Industry

Waste Management

Reducing, reusing and recycling waste lessens environmental impact.

Practise Biochemistry, Environment & Industry All Biochemistry, Environment & Industry topics

In-depth explanation of Waste Management

Waste management is the collection, treatment and disposal of waste in ways that protect health and the environment. The waste hierarchy ranks options from most to least preferred: prevention and reduction, reuse, recycling, energy recovery and, last, disposal to landfill. Composting converts organic waste into a soil amendment, and incineration with energy recovery can generate electricity while reducing volume. Hazardous wastes such as batteries and chemicals need specialised treatment. The circular economy approach keeps materials in use for as long as possible.

Going deeper: Waste Management

Key ideas: Hierarchy: reduce, reuse, recycle, recover energy, dispose. Methods: landfill (generates methane, leachate), incineration (energy recovery, risk of dioxins), composting (aerobic decomposition), anaerobic digestion (biogas, about 60 percent CH4), pyrolysis. Hazardous, biomedical and electronic waste need special handling. Segregation at source is the key step.

Common mistakes and connections: Mistake: treating incineration as destroying waste; ash remains and gases must be scrubbed. Landfill gas is a potent greenhouse gas unless captured. Biodegradable does not mean harmless in a landfill with no oxygen. Links to plastic recycling and nuclear waste.

Visualization of Waste Management

Approximate composition of global municipal waste. Organic waste is the biggest share and could be composted, while recycling targets paper, plastic, glass and metal. The interactive lesson shows this as a live animation or chart.

Worked example and use case

Recovering gold and copper from discarded circuit boards is a form of e-waste recycling.

Frequently asked questions about Waste Management

What is Waste Management?

Reducing, reusing and recycling waste lessens environmental impact.

Is Waste Management a beginner, intermediate or advanced topic?

Waste Management is a beginner topic in Biochemistry, Environment & Industry. It needs no earlier chemistry lessons and is a good starting point.

What should I learn before Waste Management?

Study these earlier topics in Biochemistry, Environment & Industry first: Heavy Metal Pollution, Pesticides, Bioaccumulation.

What comes after Waste Management?

The next topics in Biochemistry, Environment & Industry are Carbon Capture and Renewable Energy Chemistry.

Can I practise Waste Management with quizzes?

Yes. The interactive lesson includes a self-check question on Waste Management, and the Biochemistry, Environment & Industry quiz draws on every topic in this area.

Where Waste Management fits in Biochemistry, Environment & Industry

Waste Management is topic 86 of 127 in Biochemistry, Environment & Industry.