Category
page 1Recycling

recycling
thumb|The three chasing arrows of the universal recycling symbol
thumb|Municipal waste recycling rate (%), 2015
Recycling is the process of converting waste materials into new materials and objects. This concept often includes the recovery of energy from waste materials. The recyclability of a material depends on its ability to reacquire the properties it had in its original state. It is an alternative to "conventional" waste disposal that can save material and help lower greenhouse gas emissions. It can also prevent the waste of potentially useful materials and reduce the consumption of fresh
waste container
container to collect and hold waste pending disposal
waste sorting
environmental practice of separating waste categories to make it easy to recycle

baler
right|thumb|290px|A Claas large round baler
thumb|290px|Baling hay

crusher
A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, sand or rock dust.
wood-plastic composite
composite materials made of wood fiber and thermoplastics

upcycling
thumb|upright|Food cans upcycled into a stool
Upcycling, also known as creative reuse, is the process of transforming by-products, waste materials, useless, or unwanted products into new materials or products perceived to be of greater quality, such as artistic value or environmental value.
thumb|Upcycling visual representation (non-official) Norberto Miranda (2025).

spolia
thumb|An Ionic order|Ionic capital embedded in the south wall of the Church of St. Peter at Ennea Pyrgoi, [[Kalyvia Thorikou, Greece]]
Spolia (Latin for 'spoils'; : spolium) are stones taken from an old structure and repurposed for new construction or decorative purposes. It is the result of an ancient and widespread practice (spoliation) whereby stone that has been quarried, cut and used in a built structure is carried away to be used elsewhere. The practice is of particular interest to historians, archaeologists and architectural historians since the gravestones, monuments and architectural
recycling code
identifies material item is made from
used coffee grounds
waste product from brewing coffee; used to adulterate pure coffee, to grow mushrooms, to stain wood, to freshen air, to make body soap scrubs, to treat wastewater, or to make biogas
waste hierarchy
hierarchy of decreasing favorability of actions to reduce resource waste and protect the natural environment
give-away shop
stores where all goods are free
reverse vending machine
sensor-based machine for sorting and recycling
container-deposit legislation
return of beverage containers for refund
reverse logistics
return processing, i.e. all operations related to the upstream movement of products and materials
recycling symbol
symbol used to designate recyclable materials
waste picker
craft and profession of collecting waste for reuse or sale
gutter oil
oil drainage
downcycling
thumb|Downcycling symbol
reusable shopping bag
type of shopping bag which can be reused many times
nutrient cycle
set of processes exchanging nutrients between parts of a system
Green Dot
license symbol of a European network of industry-funded systems for recycling the packaging materials of consumer goods

PETase
PETases are an esterase class of enzymes that catalyze the breakdown (via hydrolysis) of polyethylene terephthalate (PET) plastic to monomeric mono-2-hydroxyethyl terephthalate (MHET).
recycling bin
container used to hold recyclables before they are taken to recycling centers

deconstruction
selective dismantlement of building components
clothing swap
exchange of used clothes
bioeffector
A bioeffector is a viable microorganism or active natural compound which directly or indirectly affects plant performance (biofertilizer), and thus has the potential to reduce fertilizer and pesticide use in crop production.
urban mining
process of recovering rare metals from stockpiles of discarded electrical and electronic equipment through mechanical and chemical treatments
retreading
thumb|upright=1.4|Bluefield Retread Company in Bluefield, West Virginia
Retread (also known as recap or remold) is a re-manufacturing process for tires that replace the tread on worn tires. Retreading is applied to casings of spent tires that have been inspected and repaired. It preserves about 90% of the material in spent tires and the material cost is about 20% compared to manufacturing a new one.
Ideonella
Ideonella is a genus of bacteria in the family Comamonadaceae.
Waelz process
rotary Kiln Recovering Method
Trench art
art genre
deposit-refund system
surcharge refunded when part of a product is returned
Precycling
Precycling is the practice of reducing waste by attempting to avoid buying items which will generate waste into households or businesses. The U.S. Environmental Protection Agency (EPA) states that precycling is the preferred method of integrated solid waste management because it cuts waste at its source and therefore eliminates trash before it is created. According to the EPA, precycling is also characterized as a decision-making process for the consumer because it involves making informed judgments regarding a product's waste implications. The factors taken into consideration by the consumer
swill
thumb|200px|Poster for pig swill for auction sale, London, 1877
Swill is liquid (or partially liquid) food for animals.
water heat recycling
utilisation of the thermal energy contained in the wastewater
landfill mining
excavating and processing solid wastes from landfills
optical sorting
automated sorting of solid products using cameras and/or lasers
materials recovery facility
plant to process recyclates

Hauling
2010 film by Sean Walsh
Vinyloop
VinyLoop is a proprietary physical plastic recycling process for polyvinyl chloride (PVC). It is based on dissolution in order to separate PVC from other materials or impurities.
eddy current separator
device that uses a powerful magnetic field to separate non-ferrous metals from waste after all ferrous metals have been removed previously by some arrangement of magnets