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Turning trash into treasure

01 October 2018
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New ways of recycling and reusing products will reduce the amount of waste going into landfill. Image credit - Flickr/ Wisconsin Department of Natural Resources, licensed under CC BY-ND 2.0

Dumped waste, from used nappies to industrial by-products, have long wound up in landfills and can take hundreds of years to decay. In October we speak to the scientists figuring out how to keep such items in use to reduce rubbish and create a so-called circular economy. We learn about new efforts to mine industrial waste for the rare metals that go into making aircraft parts, pacemakers and bicycle gears, and find out about the culture shift needed to develop a zero-waste society. We also speak to the researchers building a biorefinery to turn soiled nappies into fertilisers and raw materials, and look at whether seaweed could become the next plastic.

Seaweed is one of the fastest growing organisms on the planet, at half a metre per day, and could solve the problem of non-biodegradable packaging. Image credit - Skipping Rocks Lab
environment
24 October 2018

Seaweed coffee cups could help ditch single-use plastics

A significant amount of the single-use plastics that we use ends up in our oceans. As people increasingly ditch these plastics, seaweed — also known as macroalgae — and microalgae could be the solutions to the world’s plastic food packaging problem. These are being used to develop everyday items, from edible water bottles to coffee cups to biofuels.

Recycling can be inefficient when parts such as dashboards from cars are too hard to dismantle, says Felipe Maya. Image credit - Felipe Maya
interview | industry
15 October 2018

In a zero-waste society, people will need to share and repair

Businesses and consumers need to stop thinking of products as things to own and move towards a culture of sharing and repairing if we are to fulfil the ambition of creating a circular economy, according to Felipe Maya, project and innovation manager at sustainable engineering firm Exergy, headquartered in Coventry, UK.

The hardest part about recycling used nappies is opening them. Image credit - Wagga Wagga City Council 2010-2018
environment
08 October 2018

Scientists want to use dirty nappies as a source of raw materials

Thousands of soiled nappies that were destined to clog Italian landfill sites or incinerators are being redirected to a recycling plant that is turning them into streams of high quality raw materials, in a new process that it is hoped will be replicated around Europe.

Magnetic fields are among the techniques being developed to extract metal particles from slags (stony waste matter). Image credit - Slag heap at Rammelsberg / Goslar by B.Nunold is licensed under CC BY-SA 4.0
industry | environment
01 October 2018

Discarded waste could be a treasure trove of rare metals

Miners could soon be scouring mounds of industrial waste to extract rare metals that are needed for products such as electronics, pacemakers, aircraft parts and bicycle gears.