Your school's recycling project        

There are five basic groups to sort your rubbish into.
They are:

Aluminium   Collect your aluminium, squash it flat and store it
Glass              Sort into the three colour groups: Clear, Brown and Green
Paper             Newspapers, books, cardboard
Plastic            Plastic milk bottles, plastic bags and other plastic bottles
Steel               Squash pet food tins, baked bean and other tins flat.

There are five working days to the week, so allocate one day for the collection of each type of recycling material.

 In addition there are:
Organic waste such as vegetable scraps. Wrap in newspaper for an organic collection, or compost directly in your garden.

Aerosol cans can be recycled with steel.

Your school should have a "Recycling Officer" who will know who is organising what, and will also know the names of recycling officers at other schools in your area. Ask your school principal who your recycling officer is.

Hazardous waste

Other projects:

Recycling timber & planting trees

How much money can you make?

A rough estimate is $3 per pupil per week.
The aim is to earn $50 per student per school from aluminium cans alone. This means you may not make any money, but your school could earn about $10,000 if the roll is only 200 pupils.
To aid in this objective we will be finding sponsors who will offer prizes to the student and class who collect the most each week and month.

Aluminium cans are currency.
For example, we will be offering a reward to every student in a select number of schools who collects 50 cans in a month. If you collect 100, then you earn two rewards, but if you collect fewer than 50 you would be better to hold on to them for another month and make the number up to 50 or more.

The only catch is that they must be squashed flat. This saves a lot of money when transporting them. The going rate for flattening cans if you can't manage it yourself, is  1 can for 10, so if someone flattens 20 cans for you you pay then 2 cans. You can also ask an adult to drive their car over them to flatten them, and this will cause no damage.

We also aim to pay 10c for every aluminium can collected, so keep an audited account of how many you collect. This means you get certain designated people to count them for you, before putting them into the school collection.
We may not be able to find enough sponsors to pay the 10c so in the mean time you will have to accept payment by means of vouchers, which you will cash in when the sponsors come forward.

The cans your school collects can be put into the local council recycling scheme, or your school can sell them directly to a recycler, and receive a small payment. The price paid for aluminium varies but it should be somewhere between $2 and $10 per kilogram.

Once we have paid you for your cans they belong to us, so wait for specific instructions on what to do with them.


Here is another  recycling project       

 for your school.

  It is a competition.

  You must guess the maximum number, in kilograms of aluminium cans which will fit into a 20 foot container.

     You must then estimate in dollars, how much you think that will be worth.


  Then you can then start collecting.

We will pay 10c (New Zealand) per can, so if you like, collect tow cans to enter the competition. You will need a class teacher to help you, and a school recycling officer, so find out which teacher that is.

When you have decided to join

Write to:

Baker Publishing,               ot txt to: 027-21-567-42

42 Spencer Avenue,

Maketu 3198

New Zealand.

Provide the name and postal address of your school

 The price of new aluminium is currently above $14 per kilogram (and rising, so keep collecting).

How long would it take your school to collect $100,000 if 100 children collected 12 cans every week?

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Early sorting of recyclable materials: glass and plastic bottles (Poland)

Once commingled recyclates are collected and delivered to a central collection facility, the different types of materials must be sorted. This is done in a series of stages, many of which involve automated processes such that a truck-load of material can be fully sorted in less than an hour.[4] Some plants can now sort the materials automatically, known as single-stream recycling. A 30 percent increase in recycling rates has been seen in the areas where these plants exist.[10]

Initially, the commingled recyclates are removed from the collection vehicle and placed on a conveyor belt spread out in a single layer. Large pieces of corrugated fiberboard and plastic bags are removed by hand at this stage, as they can cause later machinery to jam.[4]

Next, automated machinery separates the recyclates by weight, splitting lighter paper and plastic from heavier glass and metal. Cardboard is removed from the mixed paper, and the most common types of plastic, PET (#1) and HDPE (#2), are collected. This separation is usually done by hand, but has become automated in some sorting centers: a spectroscopic scanner is used to differentiate between different types of paper and plastic based on the absorbed wavelengths, and subsequently divert each material into the proper collection channel.[4]

Strong magnets are used to separate out ferrous metals, such as iron, steel, and tin-plated steel cans ("tin cans"). Non-ferrous metals are ejected by magnetic eddy currents in which a rotating magnetic field induces an electric current around the aluminium cans, which in turn creates a magnetic eddy current inside the cans. This magnetic eddy current is repulsed by a large magnetic field, and the cans are ejected from the rest of the recyclate stream.[4]

Finally, glass must be sorted by hand based on its color: brown, amber, green or clear.[4]



Here is a recycling project       

you can organize for your school.

   It is a competition.

   The first prize is just a packet of pineapple lumps            and a  packet of jelly snakes.

    Just collect your aluminium cans                              and bring them to school

txt to:027-21-567-42 -'ready'


Cost-benefit analysis

+ Environmental effects of recycling[11]
Material Energy Savings Air Pollution Savings
Aluminium 95%[2][6] 95%[2][12]
Cardboard 24%
Glass 5-30% 20%
Paper 40%[6] 73%
Plastics 70%[6]
Steel 60%[4]

There is some debate over whether recycling is economically efficient. Municipalities often see fiscal benefits from implementing recycling programs, largely due to the reduced landfill costs.[13] A study conducted by the Technical University of Denmark found that in 83% of cases, recycling is the most efficient method to dispose of household waste.[4][6] However, a 2004 assessment by the Danish Environmental Assessment Institute concluded that incineration was the most effective method for disposing of drink containers, even aluminium ones.[14]

Fiscal efficiency is separate from economic efficiency. Economic analysis of recycling includes what economists call externalities, which are unpriced costs and benefits that accrue to individuals outside of private transactions. Examples include: decreased air pollution and greenhouse gases from incineration, reduced hazardous waste leaching from landfills, reduced energy consumption, and reduced waste and resource consumption, which leads to a reduction in environmentally damaging mining and timber activity. About 4,000 minerals have been identified, of these around 100 can be called common, another several hundred are relatively common, and the rest are rare.[15] Without more recycling, zinc could be used up by 2037, both indium and hafnium could run out by 2017, and terbium could be gone before 2012.[16

Without mechanisms such as taxes or subsidies to internalize externalities, businesses will ignore them despite the costs imposed on society. To make such non-fiscal benefits economically relevant, advocates have pushed for legislative action to increase the demand for recycled materials.[2] The United States Environmental Protection Agency (EPA) has concluded in favor of recycling, saying that recycling efforts reduced the country's carbon emissions by a net 49 million metric tonnes in 2005.[4] In the United Kingdom, the Waste and Resources Action Programme stated that Great Britain's recycling efforts reduce CO2 emissions by 10-15 million tonnes a year.[4] Recycling is more efficient in densely populated areas, as there are economies of scale involved.[2]

Recycling involves processing used materials into new products to prevent waste of potentially useful materials, reduce the consumption of fresh raw materials, reduce energy usage, reduce air pollution (from incineration) and water pollution (from landfilling) by reducing the need for "conventional" waste disposal, and lower greenhouse gas emissions as compared to virgin production.[1][2] Recycling is a key component of modern waste reduction and is the third component of the "Reduce, Reuse, Recycle" waste hierarchy.

Recyclable materials include many kinds of glass, paper, metal, plastic, textiles, and electronics. Although similar in effect, the composting or other reuse of biodegradable waste – such as food or garden waste – is not typically considered recycling.[2] Materials to be recycled are either brought to a collection center or picked up from the curbside, then sorted, cleaned, and reprocessed into new materials bound for manufacturing.

In a strict sense, recycling of a material would produce a fresh supply of the same material, for example used office paper to more office paper, or used foamed polystyrene to more polystyrene. 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 (e.g., paperboard) instead. Another form of recycling is the salvage of certain materials from complex products, either due to their intrinsic value (e.g., lead from car batteries, or gold from computer components), or due to their hazardous nature (e.g., removal and reuse of mercury from various items).

Critics dispute the net economic and environmental benefits of recycling over its costs, and suggest that proponents of recycling often make matters worse and suffer from confirmation bias. Specifically, critics argue that the costs and energy used in collection and transportation detract from (and outweigh) the costs and energy saved in the production process; also that the jobs produced by the recycling industry can be a poor trade for the jobs lost in logging, mining, and other industries associated with virgin production; and that materials such as paper pulp can only be recycled a few times before material degradation prevents further recycling. Proponents of recycling dispute each of these claims, and the validity of arguments from both sides has led to enduring controversy.




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