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Processes Involved in Circuit Board Recycling
February 10, 2016

The process of circuit board recycling is very complicated, involving many valuable materials and special chemicals. Such materials discharge different forms of wastewater, solid waste, and spent solution, into the environment, causing pollution. After many years of research, Alnor Industries has come up with resources for circuit board recycling that work perfectly for both commercial and small scale. Alnor Industries practices resourceful circuit board recycling, which includes the recovery of copper from the board, tin and lead contents from the solder, copper oxide from wastewater treatment sludge and copper hydroxide from the copper sulphate solution, among other valuable materials. The processes involved in achieving each level of recovery vary depending on the industrial processes used.

Due to the complexity of the circuit board recycling process, it is critical to take precautionary measures to avoid more pollution with the wastes generated. Many spent solutions used in circuit boards are strong acids or strong bases. They may also have high level of chemical oxygen demand values and heavy metal content. They are consequently referred to as hazardous wastes, which can only be handled by specialists under strict environmental regulations. However, some spent solutions have a high concentration of copper, with very high recycling potential. Alnor Industries mostly uses the subtractive method which has so far proven to be very effective. A sequence of brushing, etching, black oxide drilling, de-smearing, etching resistor stripping and curing processes are done under controlled conditions in order to achieve the maximum results.

Under normal circumstances, printed circuit boards contain very high content of copper, ranging between 25 and 60 percent. Alnor Industries has gathered a collection of concepts that ensure every precious content is extracted safely. If you have a bunch of spoilt electronics collecting dust in your basement or garage, you can get yourself some rebates by having them recycled.

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