Gold is an essential element in the production process of contemporary electronic devices. This sentence applies for devices manufactured eighties and thereafter also. What's more, the greater quantity of gold content can be found in older devices. This is because production technology today is much more precise an accurate which means that gold consumption is effectively reduced.
Difference in-between older CPU’s and these new ones show us how gold is reduced in production level. In fact, old processors that are used in personal computers in the late eighties and early nineties contain a significantly greater amount of gold from these newer generations’ processors. So we have one processor 486 marks in itself can hide from 0.1 to as much as 0.5 grams of gold per unit, and its multi-core processors are barely worth recycling.
Text above can apply for almost every electronic device.
Recycling is good for the preservation of planet earth. Recycling process is a lot cheaper than gold mining.
To produce new electronic devices and sell them, we need to replace some old but used ones. In this circle, recycling is essential.
Recycling old electronic waste is not easy, but if it is understood as a going up business it is not so risky and it should last a while. Raw materials for recycling are all kind of electronic devices. Gold is hidden inside them and just wait to be extracted.
Before recycling process collected material should be examined first. Separation must be taken and when separation is done, we can start to prepare recycling cycle.
When all the materials are grouped we can start by recycling parts of gold, or gold-plated parts. Gold is, in most cases, applied as a thin layer on base metal, and only in rare cases as pure gold.
Recycling process is dangerous, and so, in this step you have to be careful. While recycling, it is necessary to use an acid, and therefore you must be familiar with some basic rules. The space in which you work with should be properly ventilated, and airy. You must use a suit which protects against possible contact with the acid, goggles and rubber gloves. The entire process of extracting gold should be done with tools specially prepared for use in laboratories. Container in which the gold is melted and set aside should be made of glass.
Gold recycling part which you want to recycle should be worked out in a mixture of two acids called aqua regia. Name (aqua regia) comes from fact that it melts gold.
Aqua regia is media for extracting gold from other metals and keeping that gold trapped inside. After you have dissolve that gold it is time to collect it and take it out.
To make the gold back from the current media solution you need a little trick. Trick is called sodium metabisulfite. It is a white powdery substance that interacts with aqua regia and the gold atoms have led out of the liquid. Reaction inside aqua regia has a gold powder for result.
How to get pure gold? We will explain later.
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