国产精品99一区二区三_免费中文日韩_国产在线精品一区二区_日本成人手机在线

Ionic liquids offer new solution to plastic recycling

Source: Xinhua| 2018-11-30 17:28:23|Editor: Lu Hui
Video PlayerClose

BEIJING, Nov. 30 (Xinhua) -- From plastic water bottles along the River Thames in the UK to plastic wrappings after China's "double 11" shopping spree, the problem of "white pollution" keeps ballooning.

Thanks to a salt in liquid state "ionic liquids," Chinese researchers from Ionic Liquids Clean Process Team (ILC), Institute of Process Engineering (IPE) under Chinese Academy of Sciences (CAS), have developed a new recycling technology to break polyester (PET) plastics down into their most basic molecules, to perpetually remake the plastic waste as its own raw material.

PET is the fourth-most-produced polymer in the world. It is widely used in daily life, in drinking bottles, carpet fibers, printable circuits, polyester fabrics and the like.

Although reducing usage and improving waste systems can put a dent in the plastics entering the environment, the rate of production is tremendous compared to its degradability.

Most recycled plastics are simply broken into pellets that are then remolded to make new plastic products of lesser quality.

The pollution caused by some traditional recycling methods is high while the efficiency is low, IPE Principal Investigator Lu Xingmei told Xinhua.

Ionic liquids have ions that refuse to stack neatly into crystals like table salt and make them exist as liquid. They stand out in the green chemistry movement because they rarely evaporate, so cannot be inhaled and do not form smog.

"Using ionic liquids as catalysts, we split the long polymer chains of PET plastics into constituent parts, increasing the final degradability to 100 percent in the lab and cutting the use of water in the recycling process by more than 75 percent," she said.

The Chinese researchers are discussing with British company Green Lizard Technologies plans to build a 10,000-tonne capacity PET plastic recycling facility in Britain.

Zhang Suojiang, director of ILC and director of IPE, believes commercializing the new technology will promote the promising future of the circular economy.

Dismantling plastics to their chemical parts provides building blocks to remake plastic products of equally high quality. Theoretically, it could lead to an infinite recycle, said Zhang.

It's still cheaper to burn plastic waste and or to throw it in landfills. The Chinese researchers are planning to make their new chemical recycling technology more economical.

TOP STORIES
EDITOR’S CHOICE
MOST VIEWED
EXPLORE XINHUANET
010020070750000000000000011102351376422671
主站蜘蛛池模板: 安平县| 合川市| 吴旗县| 土默特右旗| 衡南县| 天柱县| 祁阳县| 平山县| 博野县| 治县。| 九江市| 三江| 东海县| 丹寨县| 安岳县| 固安县| 淮南市| 道孚县| 永年县| 驻马店市| 丽江市| 尼玛县| 莱州市| 重庆市| 洛川县| 渭源县| 湄潭县| 双柏县| 东辽县| 健康| 若尔盖县| 全州县| 龙江县| 科技| 石门县| 静安区| 五指山市| 兴隆县| 江油市| 二连浩特市| 彩票|