... metals is important, their production uses lots of energy. ... uses much less energy. Metals can be ... by melting and remoulding. Glass can be ... by being crushed and reshaped
Recycling
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Glass bottle are ... without reshaping
Reused
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... assessments: 1- Getting the raw materials~ extraction and processing. 2- Manufacturing and Packaging~ Energy used and pollution produced. 3- Using the product~ Any damage to the environment and how long it lasts. 4- Product Disposal~ Pollution
Life Cycle
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Life Cycle Assessments (LCA) can be ... depending on the person carrying out the assessment. Some other problems include the pollution produced and the energy used
Biased
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... is treated water so it's safe for humans to drink and use. It isn't pure because things have been dissolved into it and the pH has to be between 6.5 and 8.5
Potable Water
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... is freshwater collected as surface water or ground water- the source of fresh water depends on location. In dry countries, there isn't enough water so seawater must be used to make potable water
Rainwater
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Producing water, In ... :Filtration- Wire mesh screens out large twigs and sand or gravel beds filter out smaller particles. Sterilisation- Water sterilised to kill any bacteria or microbes. Using chlorine, UV light or ozone.
the UK
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Producing water, In ... : Desalination- Test pH with titration. Test water for sodium chloride with flame test and halide test. Use distillation for water and retest pH to see if its neutral. Reverse Osmosis- Salty water is passed through a membrane
Hot countries Kuwait
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Both techniques in hot countries require a lot of ...
energy
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... from domestic or agricultural sources has to be treated or if not, it could pose health risks. The Haber process produces a lot of ...
waste water
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... uses less energy than water ... : 1-Sewage is screened to remove large material or dirt. 2- Undergoes sedimentation, sludge produced at bottom. 3- Effluent (stuff at the top) is treated by aerobic digestion
Treatment
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... uses less energy than water... : 4- Sludge is broken down by anaerobic digestion. 5- Anaerobic digestion produces methane which is then used in fertilisers. 6- Water containing toxic substances have additional stages of ... by adding chemicals
Treatment
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Other cards in this set
Card 2
Front
Glass bottle are ... without reshaping
Back
Reused
Card 3
Front
... assessments: 1- Getting the raw materials~ extraction and processing. 2- Manufacturing and Packaging~ Energy used and pollution produced. 3- Using the product~ Any damage to the environment and how long it lasts. 4- Product Disposal~ Pollution
Back
Card 4
Front
Life Cycle Assessments (LCA) can be ... depending on the person carrying out the assessment. Some other problems include the pollution produced and the energy used
Back
Card 5
Front
... is treated water so it's safe for humans to drink and use. It isn't pure because things have been dissolved into it and the pH has to be between 6.5 and 8.5
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