11 Facts About E-Waste | DoSomething.org

For every 1 million cell phones that are recycled, 35,274 lbs of copper, 772 lbs of silver, 75 lbs of gold, and 33 lbs of palladium can be recovered. [7] Recycling 1 million laptops saves the energy equivalent to the electricity used by 3,657 U.S. homes in a year.

Learn More

A green process for extracting gold - New Atlas

A research team at the University of Saskatchewan has found what may be an inexpensive and environmentally-friendly way of recycling gold from jewelry and electronics. Using a solution of what is ...

Learn More

Recovery of Gold, Silver, Palladium, and Copper from Waste

wt% copper, 0.04 wt% gold, 0.15 wt% silver, and 0.01 wt% palladium. The extraction of these metals from PCBs is both profitable and environmentally worthwhile. Hence, this study aims to design a commercial process to extract these four metals from PCBs of computers and mobile phones. This paper discusses the relevant

Learn More

The Environmental Disaster That is the Gold Industry

Much of this waste carries with it mercury and cyanide, which are used to extract the gold from the rock. The resulting erosion clogs streams and rivers and can eventually taint marine ecosystems ...

Learn More

CN101157986A - Rapid nontoxic gold extracting method

The method of the invention is non-toxic and the gold leaching speed is a few to a dozen times as fast as that in cyannidation. The invention relates to a wet gold extraction method, and is a quick...

Learn More

How to Extract Gold from a Circuit Board | Earth Lab - YouTube

2018-08-24 · You can make gold appear from something that isn't gold... And this is chemistry, not alchemy!ubscribe: http://bit.ly/SubscribeToEarthLab All the best Eart...

Learn More

Gold extraction with BORAX for small-scale miners - Rather

Learn how to make more gold with borax instead of mercury. Description of a new environmentally beneign gold extraction method which will make use of mercury...

Learn More

Synergistic Extraction of Gold by Di-(2-ethylhexyl

extraction due to enhanced extraction efficiency of heavy metal. Methodology: In order to improve extraction efficiency, di-(2-ethylhexyl) phosphoric acid (D2EHPA) was mixed with isodecanol to provide a synergistic effect together with leaching solution which is thiourea. From the single extraction system, the optimum temperature is

Learn More

PDF) Thiosulfate leaching of gold from waste mobile phones

Gold extraction was found to be enhanced with solutions containing 15-20. mM cupric, 0.1-0.14. M thiosulfate, and 0.2-0.3. M ammonia. Similar trends were obtained for the leaching of gold from two different types of scraps and PCBs of waste mobile phones.

Learn More

Gold Recovery Correctly : 12 Steps - Instructables

To activate the solution you want to add your Hydrogen peroxide 3 - 5% solution in a 2 to 1 ratio. two parts muratic acid to one part hydrogen peroxide. after the Peroxide has been added to your muratic acid the mixture should start to bubble, and the base metals should begin to dissolve.

Learn More

Gold Recovery : 8 Steps (with Pictures) - Instructables

Pouring the acid into a coffee filter the acid passes through the filter leaving the gold behind, save the acid do not dump it down the drain. Next dump the remaining fingers and circuit boards into a deep plastic tray and add water, sort out the cleaned of gold parts, put the cleaned parts in the waist and save the un-cleaned parts for re-dipping.

Learn More

Reduction of Thiourea Consumption in Gold Extraction by Acid

The thiourea leaching of gold and silver from the gold-bearing silicate ore of the Hishikari mine (Kagoshima, Japan) was studied. The apparent activation energy of the extraction of gold and silver was smaller than that of the reaction rate of thiourea consumption by ferric iron. We carried out the leaching after the leaching solution was preserved for several hours. The gold recovery at 288 K ...

Learn More

Stephen FOLEY, et al. : Gold Extraction

What his U of S research team has discovered is a process using a solution -- acetic acid combined with very small amounts of an oxidant and another acid -- that extracts gold efficiently and effectively without the environmental concerns of current industry practices. In this technique, the gold extraction is done under mild conditions, while the solution dissolves gold at the fastest rate ever recorded.

Learn More

Recover Gold From Computer Parts | Extract Gold From

To recover gold from computer CPUs, aqua regia is the best method. Because CPUs have gold wires in them and there is no base metal present inside the CPUs. To make aqua regia we have to mix 3 parts hydrochloric acid and 1 part nitric acid. Read our article “Recovery …

Learn More

Gold e traction with acid from waist

Extraction of gold(III) in hydrochloric acid solutionExtraction of gold(III) in hydrochloric acid solution using monoamide compounds Article in Hydrometallurgy 81(3 4) 153 158 March 2006 with 197 Reads How we measure 'reads'.EnviroLeach Technologies Taking Cyanide and Acid Out OfSep 18, 2017· EnviroLeach Technologies is shaking up the mining industry by offering an environmentally alternative ...

Learn More