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USING RESOURCES (POLYMER TYPES (LDPE- Low density polyethene, HDPE- High…
USING RESOURCES
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SEWAGE TREATMENT INCLUDES:
- screening and grit removal
- sedimentation
- anaerobic digestion
- aerobic biological treatment
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SUSTAINABLE DEVELOPMENT:
Development which meets the needs of the current generation without destroying the ability of future generation's matching their own needs.
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STERILIZING AGENTS FOR WATER:
Chlorine, ozone and ultraviolet water
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LIFE CYCLE ASSESSMENTS:
Assessment of the environmental impact of a product (from the production, use and decomposition/ breakdown of the product)
CORROSION:
Destruction of a material by a chemical reactions with substances in the environment, e.g. rusting
ALLOY:
A mixture of metals or a mixture of a metal with another element e.g brass, steel and gold used in jewellery.
SODA-LIME GLASS
Made out of sand, sodium carbonate and limestone
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HABER PROCESS:
The manufacture of ammonia from nitrogen and hydrogen (NH3) . The conditions must be:
- 200 ATM (pressure )
- presence of an iron catalyst
- 450 degrees Celsius
NPK FERTILIZERS:
Compounds of nitrogen, phosphorus and potassium used to improve agricultural productivity.
COMPOSITES:
Made of two materials, a matrix or binder surrounding fibers or fragments called reinforcements