Featured Research

from universities, journals, and other organizations

Reclaiming Plastics From Junkyard Cars Feasible With New Technique

Date:
November 16, 2007
Source:
Fraunhofer-Gesellschaft
Summary:
Once plastics have been built into a car, they are rarely recycled. Compressed into granulate material, the shredded plastic parts are usually too indiscriminately mixed to permit any further use. Researchers have now found a way of separating the different types of plastic. Every end-of-life car is a source of raw materials -- in theory anyway. In practice, however, these resources are still used far too seldom -- particularly where plastics are concerned.

Every end-of-life car is a source of raw materials – in theory anyway.
Credit: Image courtesy of Fraunhofer-Gesellschaft

Once plastics have been built into a car, they are rarely recycled. Compressed into granulate material, the shredded plastic parts are usually too indiscriminately mixed to permit any further use. Researchers have now found a way of separating the different types of plastic.

Every end-of-life car is a source of raw materials – in theory anyway. In practice, however, these resources are still used far too seldom – particularly where plastics are concerned. During the recycling process, the polymers land in the non-metallic shredder residue along with dust, slivers of metal and textile fluff, and are made into granulate using the SiCon process. This mixes the plastics so indiscriminately that it has never yet been possible to separate them into the individual types again. They are normally used as reducers in blast furnaces.

In future, this granulated plastic could be salvaged and transformed once again into dashboards and other car parts. In a joint project with Toyota and Sicon, researchers at the Fraunhofer Institute for Process Engineering and Packaging IVV in Freising have laid the foundations with CreaSolv®. “We developed a special solvent that removes a particular type of plastic from the granulate: the polyolefins used to make air filter housings, shock absorbers and side panels,” says IVV project manager Dr. Martin Schlummer.

“While this type of polymer dissolves in the solvent, the other plastics remain in the granulate.” The solvent is separated from the polyolefin and re-used. There is a further advantage, too: The CreaSolv® process is so effective as a cleaner that scientists can also separate out any toxins with which the polymer may have come into contact during shredding. “Using this technology, the overall recycling rate for end-of-life cars – metals, plastics and textiles – can be increased to over 90 percent,” says Schlummer.

The researchers have already been using the idea behind CreaSolv® for about a year, with great success, to recover styrene copolymers from electrical appliances such as computers and TVs. In this way, the researchers can recycle about 50 percent of the high plastic content in discarded electrical appliances. Nevertheless, a great deal of development effort was necessary before it was possible to process the plastics from cars as well. “Different polymers are used in cars than in electrical appliances, so we had to develop completely different solvents,” the expert explains.

The researchers have already put the basic process into practice. In future, they intend to recycle other types of plastic from cars in addition to the polyolefins – perhaps by combining the methods for recovering styrene copolymers and polyolefins. Eventually, Schlummer hopes, it will be possible to make optimum use even of plastics from shredding plants where refrigerators, kitchen ranges and cars are all shredded together.


Story Source:

The above story is based on materials provided by Fraunhofer-Gesellschaft. Note: Materials may be edited for content and length.


Cite This Page:

Fraunhofer-Gesellschaft. "Reclaiming Plastics From Junkyard Cars Feasible With New Technique." ScienceDaily. ScienceDaily, 16 November 2007. <www.sciencedaily.com/releases/2007/11/071110085246.htm>.
Fraunhofer-Gesellschaft. (2007, November 16). Reclaiming Plastics From Junkyard Cars Feasible With New Technique. ScienceDaily. Retrieved July 27, 2014 from www.sciencedaily.com/releases/2007/11/071110085246.htm
Fraunhofer-Gesellschaft. "Reclaiming Plastics From Junkyard Cars Feasible With New Technique." ScienceDaily. www.sciencedaily.com/releases/2007/11/071110085246.htm (accessed July 27, 2014).

Share This




More Matter & Energy News

Sunday, July 27, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Europe's Highest Train Turns 80 in French Pyrenees

Europe's Highest Train Turns 80 in French Pyrenees

AFP (July 25, 2014) — Europe's highest train, the little train of Artouste in the French Pyrenees, celebrates its 80th birthday. Duration: 01:05 Video provided by AFP
Powered by NewsLook.com
TSA Administrator on Politics and Flight Bans

TSA Administrator on Politics and Flight Bans

AP (July 24, 2014) — TSA administrator, John Pistole's took part in the Aspen Security Forum 2014, where he answered questions on lifting of the ban on flights into Israel's Tel Aviv airport and whether politics played a role in lifting the ban. (July 24) Video provided by AP
Powered by NewsLook.com
Creative Makeovers for Ugly Cellphone Towers

Creative Makeovers for Ugly Cellphone Towers

AP (July 24, 2014) — Mobile phone companies and communities across the country are going to new lengths to disguise those unsightly cellphone towers. From a church bell tower to a flagpole, even a pencil, some towers are trying to make a point. (July 24) Video provided by AP
Powered by NewsLook.com
Algonquin Power Goes Activist on Its Target Gas Natural

Algonquin Power Goes Activist on Its Target Gas Natural

TheStreet (July 23, 2014) — When The Deal's Amanda Levin exclusively reported that Gas Natural had been talking to potential suitors, the Ohio company responded with a flat denial, claiming its board had not talked to anyone about a possible sale. Lo and behold, Canadian utility Algonquin Power and Utilities not only had approached the company, but it did it three times. Its last offer was for $13 per share as Gas Natural's was trading at a 60-day moving average of about $12.50 per share. Now Algonquin, which has a 4.9% stake in Gas Natural, has taken its case to shareholders, calling on them to back its proposals or, possibly, a change in the target's board. Video provided by TheStreet
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins