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materials

Car Parts From Agricultural Waste

January 11, 2019 By EarthWise Leave a Comment

A new bio-composite material made from date palm fiber biomass could be used to produce sustainable, lightweight and low-cost parts for the automobile and marine industries.

A team of researchers from the UK has developed a date palm fiber polycaprolactone composite that is completely biodegradable, renewable,sustainable and recyclable, in contrast to synthetic composite materials reinforced by glass and carbon fibers. The team tested the mechanical properties of the material and found that it achieved better low-velocity impact resistance than traditional man-made composites.

The idea would be to use the material in non-structural auto parts such as car bumpers and door linings.   The result would be to reduce the weight of vehicles, contributing to less fuel consumption and lower emissions.  The new material can be produced using less energy than glass and carbon fibers and is biodegradable and therefore easier to recycle.

Date palm fibers are one of the most available natural fibers in many parts of the world.  The trees produce a large quantity of agricultural waste, which is mostly burned or land-filled,causing serious environmental problems.

Convincing industry to use a new class of materials such as natural-fiber reinforced composites is challenging.  First it is necessary to obtain consistent,reliable properties from the material. Then the industries need to work closely with the developers to test the materials and convince themselves of the viability of using them.  The team, led by researchers at the University of Portsmouth, has been working with industry to test the viability of parts made from a variety of other sustainable materials as well including flax, hemp, and jute.  Someday, our cars may have bumpers made from agricultural waste.

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Agricultural waste drives us closer to greener transport

Photo, posted October 27, 2017, courtesy of David Stanley via Flickr. 

Earth Wise is a production of WAMC Northeast Public Radio.

Cleaning And Splitting Water

December 18, 2018 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2018/12/EW-12-18-18-Cleaning-and-Splitting-Water.mp3

Researchers at EPFL in Lausanne, Switzerland, have developed a photocatalytic system that can be used to degrade pollutants present in water while simultaneously producing hydrogen that can be captured and put to use.

[Read more…] about Cleaning And Splitting Water

More Power From The Sun’s Heat

November 29, 2018 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2018/11/EW-11-29-18-More-Power-From-The-Suns-Heat.mp3

When we think of solar power, we usually are talking about the panels that generate electricity using the photovoltaic effect.  These panels are on millions of rooftops around the world and in utility-scale solar farms.   There are also solar water heating systems that use the sun’s heat to provide hot water for homes and businesses.

[Read more…] about More Power From The Sun’s Heat

Turning Plastic Waste Into Green Energy

November 14, 2018 By EarthWise 1 Comment

https://earthwiseradio.org/wp-content/uploads/2018/11/EW-11-14-18-Turning-Plastic-Waste-into-Green-Energy.mp3

In the Back to the Future movies, the DeLorean time machine ran on garbage.  We aren’t any closer to building time machines, but it might soon be practical to produce fuel from garbage.

[Read more…] about Turning Plastic Waste Into Green Energy

Designing Plastic To Fall Apart

September 17, 2018 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2018/09/EW-09-17-18-Designing-Plastic-to-Fall-Apart.mp3

In the 1940s and 1950s, synthetic polymers became very popular.  These man-made materials were designed to be cheap and durable and soon began replacing metals and glass in everything from automobiles and airplanes to bottles and dishes.

[Read more…] about Designing Plastic To Fall Apart

Turning Heat Into Electricity

February 19, 2018 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2018/02/EW-02-19-18-Turning-Heat-Into-Electricity.mp3

Many of our technologies produce waste heat.  Internal combustion engines are a prime example, but all our industrial processes, motors, electronics and other machinery turn some (and, in many cases, most) of the energy it takes to run them into heat that just goes into the environment.

[Read more…] about Turning Heat Into Electricity

An Electric, Autonomous Container Ship

September 18, 2017 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2017/09/EW-09-18-17-Autonomous-Container-Ship.mp3

Electric cars are big news these days and so are self-driving cars.   But now there is about to be an electric, self-navigating cargo ship.  The soon-to-be-finished ship is called the Yara Birkeland, and is being built under a partnership between two Norwegian companies.

[Read more…] about An Electric, Autonomous Container Ship

Help Save The Bees

December 13, 2016 By EarthWise

https://earthwiseradio.org/wp-content/uploads/2016/12/EW-12-13-16-Help-Save-the-Bees.mp3

Globally, 40% of invertebrate pollinator species, such as bees and butterflies, are facing extinction.  And since approximately three-quarters of the world’s food crops depend on pollination, the decline of these pollinators could pose a threat to food security around the globe. 

[Read more…] about Help Save The Bees

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