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Sustainability: Life Cycle Assessment (B) Diagram | Quizlet

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Start studying Sustainability: Life Cycle Assessment (B). Learn vocabulary, terms, and more with flashcards, games, and other study tools.

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A or LCA analyses the impact of a manufactured product.

The main stages analysed as part of a life-cycle assessment are:

1. making materials for the product from the needed

2. manufacturing the product

3. transport of the product (and raw materials)

4. using the product

5. disposing of the product at the end of its useful life

The life-cycle assessment is a complex process and judgements are not exact. For example, people do not always follow the disposal advice from the manufacturer.

Disposal methods may have both drawbacks and benefits. For example, incineration may emit harmful gases into the environment, but the energy released can be used to generate electricity.

At each stage a life-cycle assessment considers:

1. Raw materials

All the raw materials we need come from the Earth's , or oceans, or are due to living organisms. Obtaining these materials has an impact on the environment, including:

2. Manufacture

The manufacture of products has an impact on the environment, including:

using up land for factories

production of polluting waste (emitted into rivers or the atmosphere)

3. Transport

The transport of both the final product, and the raw materials used to make it, requires energy. The amount of pollutants released into the atmosphere varies according to the type of transport use and the length of the journeys that have to be made.

The impact of a product on the environment during its use depends on the type product. For example, a wooden chair has very little impact unless it needs cleaning or repair. On the other hand, a car will have a significant impact.

Most of the rubbish we throw away ends up in but there are other methods of disposal.

Incinerators can burn polymer waste and use the energy to generate electricity that can then power people's homes.

Some materials can be . During recycling, products are broken down into the materials used to make them. These materials can then be used to make something else.

Many items can be reused meaning they do not need to be disposed of at all (for example, glass milk bottles). This uses less energy than recycling them.

The method of disposal of old products has an impact on the environment, including:

using up land for landfill sites

release of waste gases during incineration

use of energy and production of waste substances if the product is recycled

reduction in impact if the product is reused

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What happens to products at the end of their useful life? - OCR 21C - Revision 1 - GCSE Chemistry (Single Science) - BBC Bitesize

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A or LCA analyses the impact of a manufactured product. The main stages analysed as part of a life-cycle assessment are: making materials for the product from the needed manufacturing the product transport of the product (and raw materials) using the product disposing of the product at the end of its useful life The life-cycle assessment is a complex process and judgements are not exact.