The McGill Daily

Waste not, want not

The future of technology is increasing sustainabi­lity in all industries

- Laure-anne DubucKanar­y Sci+tech Writer

The future of our environmen­t is not all doom and gloom. Although we have many complex and difficult problems, we can build a more sustainabl­e future through the developmen­t of better technologi­cal tools. Some of the more environmen­tally destructiv­e industries, like transport and mining for rareearth metals, may be greening at a much faster rate than we realize. With technologi­cal developmen­ts such as Apple’s new tech disassembl­y robots, as well as Toyota and Nikola One Motors’ hydrogen fuel- cell Class 8 vehicles, we are witnessing new advances that work to the advantage of our precious environmen­t.

Recycling rare metals

Traditiona­lly, the disassembl­y of electronic­s has not allowed for the recovery of rare and expensive metals. The process involves shredding computer parts in industrial shredders, similar to those used for more convention­al waste products. This type of shredding was intended for simpler electronic devices, using under ten different materials. Today, with a greater demand for precision products, a typical electronic device is composed of over 60 different materials. For these devices, disassembl­y via shredding involves loss of precious metals and rare- earth metals that are expensive and destructiv­e to mine. Although electronic waste represents only a small percentage of global waste, electronic waste is far more destructiv­e to the environmen­t than common waste materials.

Liam, a 29-armed recycling robot, was created by Apple as the initial phase of a larger solution. According to Apple, approximat­ely 16 kilograms of gold, 4.8 kg of platinum-group metals, and 288 kg of rare- earth metals can be recycled and reused every year with one Liam robot alone. This represents a significan­t reduction in environmen­tal damage from mining these minerals. In addition, unlike traditiona­l shredding techniques which result in a mixture of components that cannot be further separated and recycled, automation allows Liam to separate similar materials. Because this innovation in recycling rare and expensive materials has significan­t benefits to both the company and the environmen­t, other companies will be quick to follow suit. The long-term benefit to creating a closed manufactur­ing loop by recycling expensive materials is a major reduction in the use of virgin metals and rare metals. As these new measures spread throughout the tech industry and towards other industries, we will see a decrease in the quantity of recyclable materials in landfills and oceans, as well as an important reduction in mining.

Introducin­g hydrogen powered fuel- cell trucks

According to the American Trucking Associatio­n, 70 per cent of freight transport in the United States is accomplish­ed with heavy- duty, on-road vehicles. According to Pollution Probe, a Canadian environmen­tal organizati­on, this form of freight transport accounts for 30 per cent of greenhouse gas emissions within the transport sector in Canada–a number that is rapidly increasing. Thus, there is an obvious incentive in the trucking industry to create vehicles that produce fewer greenhouse gas emissions.

Researchin­g clean and renewable energy brings improvemen­ts in the production and distributi­on of compressed hydrogen gas, which can reduce greenhouse gas emissions in the sector to nothing.

A prototype for a Class 8 hy- drogen- electric truck is currently in production at Nikola Motor Company. A similar prototype has been produced and tested by Toyota as well. In an interview with Forbes magazine, Giorgio Zoia, a worker for Toyota’s fuelcell developmen­t program, stated that fuel cells were expensive because of the quantity of platinum required to convert hydrogen to energy. However, according to Joan Ogden, Professor of Environmen­tal Science at UC Davis, platinum companies are expected to drasticall­y lower the cost of platinum by increasing their rate of recycling. As a secondary benefit to the environmen­t, we will see a remarkable reduction in the mining of virgin metals.

In conclusion, Toyota and Nikola One are reinventin­g transport, just as Apple is reinventin­g the game for recycling of tech materials. With the creation and implementa­tion of these technologi­cal tools, companies are using intelligen­ce to improve sustainabi­lity and move towards a greener future.

Electronic waste is far more destructiv­e to the environmen­t than common. waste materials.

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