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Recycling

Science

Cigarette ash may find use filtering arsenic from water

In a perfect world, cigarette waste simply wouldn't exist. Given that it does, though, scientists have explored a number of methods of repurposing it – these have included using compounds from cigarette butts to store energy, make shipping pallets, and rust-proof steel. Now, researchers have shown that cigarette ash can be used as a low-cost means of filtering arsenic from water supplies. It's a little ironic, as cigarette smoke actually contains a dangerous amount of arsenic. Read More

Electronics

Recycled Li-ion batteries made with alfalfa seeds and pine resin

Thanks to their high power ratings and relative reliability, lithium-ion (Li-ion) batteries are an efficient and reliable source of power, widely used in modern electronic equipment. On the downside, however, expired Li-ion batteries are also difficult to dispose of, with their potentially toxic content and the complex methods required for their recycling. Researchers at Uppsala University’s Ångström Laboratory think that they may have a solution: combine the salvaged remnants of a Li-ion battery with completely organic materials derived from alfalfa and pine resin, to create a recycled biomaterial Li-ion hybrid battery. Read More

New technique automates sorting of plastics for recycling

If you've ever had to separate different types of plastic for recycling, then you'll know how much it slows down the recycling process. Now, imagine how much harder it is for staff receiving huge amounts of unsorted plastic at municipal recycling plants. New technology developed at Ludwig Maximilians Universitat in Munich, however, identifies plastic types automatically. Read More

Environment

Recyclable coffee cup could save billions from ending up in landfill

Along with a timely hit of caffeine, takeaway coffee can deliver its fair share of environmental angst as the office trash can begins to brim with empty paper cups. But what if, instead of being carted off to landfill, these cups could be recycled up to seven times, much like newspapers and regular cardboard? According to UK-based inventor Martin Myerscough, a small difference in the way these cups are produced could significantly reduce the monumental waste generated by today's coffee-crazed society.Read More

Environment

Video: World's first industrial-scale waste-to-biofuels facility

Thanks to its extensive composting and recycling facilities, the city of Edmonton, Canada is already diverting approximately 60 percent of its municipal waste from the landfill. That figure is expected to rise to 90 percent, however, once the city's new Waste-to-Biofuels and Chemicals Facility starts converting garbage (that can't be composted or recycled) into methanol and ethanol. It's the world's first such plant to operate on an industrial scale, and we recently got a guided tour of the place. Read More

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