Discarded Electronics Are Literal Gold Mines

If you have seen any dystopian film or have read any piece at all of dystopian literature, you would know that a landscape made of metal offers intense horrors that bank on some of the deep-seated fears of today’s society.

Realistically speaking, we have been inventing ways to address the problem of metal such as recycling laptop batteries into a source of alternative energy or something as strangely innovative as making stylish backpacks out of car parts, but there is a need to push further. A trio of researchers recently took a shot at that and conducted a study which tries to answer how profitable it is to recover metals from old electronics.

In 2016 alone, the world discarded 44.7 million metric tons of unusable or simply unwanted electronics, according to the United Nations’ 2017 Global E-Waste Monitor report. That’s 4,500 Eiffel Towers-worth of phones, laptops, microwaves, and TVs. Only 20 percent of this e-waste was properly recycled that year. The rest was likely either incinerated, pumping pollution into the atmosphere, or added to a landfill somewhere, with its toxins now leaking into our soil and water supply.

It turns out, urban mining costs much less than traditional mining. The researchers from Beijing’s Tsinghua University and Sydney’s Macquarie University published their results in a scientific journal after collecting data from recycling companies in China. While the cost of recycling might vary from country to country, China’s status as the world’s biggest producer of e-waste makes light of the truth that the practice of urban mining could have a big impact on both economic and environmental matters.

[W]e already knew electronics contain precious metals in addition to all that glass and plastic. While a single smartphone might not contain all that much, consumers buy about 1.7 billion of the devices each year. In just one million of those, you’ll find roughly 75 pounds of gold, 35,000 pounds of copper, and 772 pounds of silver.

Necessary reminder though: this is no reason at all to justify our technological consumption practices. If anything, it should make us ask more conscientiously, what do I do with my smartphone once I find a new replacement that has great upgrades and loads informative online articles (like this!) much faster?

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Recycled Laptop Batteries Power People’s Homes

Some households may be slashing electricity bills by producing their own power, but this isn’t the case for everyone. While other options allow homeowners to store energy using solar panels, the amount collected isn’t always enough. Builders are now taking matters into their own hands, using recycled laptop batteries to power homes — including theirs.

“Approximately 95 percent of consumer batteries sold in the US are not recycled and are ultimately thrown away. Virtually all batteries can be recycled into valuable secondary products…”

Most builders use 18650 lithium-ion batteries for storing power. They are plentiful in hardware shops, but can be costly. Not to mention, a single battery doesn’t store much. Buying a several hundred? That’s hopeful.

Gathering enough batteries is only the first step to building a DIY powerwall. Every cell then has to be tested—not all are safe enough to be used… Lithium-ion batteries have a limited lifespan: some laptop batteries harvested end up having too little capacity to be used.

Altogether, the process is tedious. Voltages need testing. Batteries need cycling. Cells need soldering. On top of that, building DIY powerwalls require a lot of safety measures. So why go through the trouble? Besides the obvious payoff, builders are able to share new ideas — some of which could really make an impact.

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