RECYCLING BIOPOLYMER

Mer som dette

International Earth Day

Ved Vivian Vivian

recycle

Ved courtney lavia

Sample Mind Map

Ved Laura López

Research

Ved Toh Chang Hui

RECYCLING BIOPOLYMER

Recycling

Technique to recovered waste plastic material & reuse

Mechanical Recycling

Reprocessing

Agglomeration - crumbs or agglomerates state

Extrusion- produce pellets from recycled material

Washing & Drying

Wash by cold & hot water ( 60 degree Celsius) and dried until less than 0.1% moisture

Shredding

Reduce size of scrap by shredder into smaller pile of plastic flakes.

Sorting

Plastics waste are separated from impurities and different type of plastic grade

Techniques

Eddy current separator - use of electric current to separate non-ferrous material

Induction Sorting- inductive sensor detect types of metal & separated by fast air blast

Matter Cycling in Ecosystem

Nitrogen Cycle

Carbon Cycle

nature's reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again

Carbon enters the atmosphere as carbon dioxide from respiration (breathing) and combustion (burning).

Carbon dioxide is absorbed by producers (life forms that make their own food (plants) to make carbohydrates in photosynthesis . These producers then put off oxygen

Animals feed on the plants & most of the carbon these animals consume exhaled as carbon dioxide through the process of respiration. The animals and plants then eventually die.

The dead organisms (dead animals and plants) are eaten by decomposers in the ground. The carbon that was in their bodies is then returned to the atmosphere as carbon dioxide

Water Cycle

The natural water cycle moves water from the earth to the atmosphere - and back again

Evaporation- sun heat the water, turning it into water vapor which rises into the air.

Transpiration-water vapor release into the air from people, animal & plant when warmed by sun

Condensation- cooled water vapor in air form tiny water droplets in sky

Precipitation- when water droplets fall from sky as rain, snow.

Percolation-water seeps deeper into tiny spaces in the soil and rock.

Main topic

Compostable vs Biodegradable

Subtopic

Composting

Advantages

Save landfill space

low leachate & methane gas production

Enriches soil by production of beneficial bacteria & fungi to create a rich nutrient material in plantation

Material to compost

Dairy

Paper goods

Fruits & Vegetables

Composting Vs Recycling

Method which organic material is broken down by microorganisms in the presence of oxygen that yield carbon dioxide, water, inorganic compounds & biomass.

Leave no visible, distinguishable & toxic residue

Naturally recycle on continuous way in natural environment.

The end product or compost can be apply to support plant growth.