Recycling is defined in a new process, through a set of basic stages around the collection of waste,
then recycled into new materials, and then sold and bought, and through which materials are recycled: iron, wheel cans,
wood and plastic , Paper, and glass containers.
Types of recycling There are two basic types of recycling:
Internal recycling: the reuse of waste from the manufacturing process itself
, commonly used in the manufacture of metals, such as the manufacture of copper pipes.
External Recycling:reclamation of obsolete and obsolete materials, such as collecting old magazines and newspapers,
and recycling them into new paper products.
Recycling is a key component of modern waste reduction and is the third component of the "Reduce, Reuse, and Recycle" waste hierarchy
recycling aims at environmental sustainability by substituting raw material inputs into and redirecting waste outputs out of the economic
system.
There are some ISO standards related to recycling such as ISO 15270:2008 for plastics waste and ISO 14001:2015 for environmental management
control of recycling practice.
Recyclable materials include many kinds of glass, paper, cardboard, metal, plastic, tires, textiles, batteries, and electronics.
The composting or other reuse of biodegradable waste—such as food or garden waste—is also a form of recycling.
Materials to be recycled are either delivered to a household recycling center or picked up from curbside bins, then sorted,
cleaned, and reprocessed into new materials destined for manufacturing new products.
In the strictest sense, recycling of a material would produce a fresh supply of the same material—for example,
used office paper would be converted into new office paper or used polystyrene foam into new polystyrene.
This is accomplished when recycling certain types of materials, such as metal cans, which can become a can again and again,
infinitely, without losing purity in the product. However, this is often difficult or too expensive
(compared with producing the same product from raw materials or other sources),
so "recycling" of many products or materials involves their reuse in producing different materials
(for example, paperboard) instead. Another form of recycling is the salvage of certain materials from complex products,
either due to their intrinsic value (such as lead from car batteries, or gold from printed circuit boards),
or due to their hazardous nature (e.g., removal and reuse of mercury from thermometers and thermostats).
Quality of recyclate
The quality of recyclates is recognized as one of the principal challenges that needs to be addressed for the success of a long-term vision
of a green economy and achieving zero waste.
Recyclate quality is generally referring to how much of the raw material is made up of target material
compared to the amount of non-target material and other non-recyclable material.
For example, steel and metal are materials with a higher recyclate quality.
It’s estimated that two thirds of all new steel manufactured comes from recycled steel
Only target material is likely to be recycled, so a higher amount of non-target and non-recyclable material will reduce
the quantity of recycling product. A high proportion of non-target and non-recyclable material can make it more difficult
for re-processors to achieve "high-quality" recycling. If the recyclate is of poor quality,
it is more likely to end up being down-cycled or, in more extreme cases, sent to other recovery options or landfilled
For example, to facilitate the re-manufacturing of clear glass products there are tight restrictions for colored glass
going into the re-melt process. Another example is the downcycling of plastic, in which products such as plastic food
packaging are often downcycled into lower quality products, and do not get recycled into the same plastic food packaging.
