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Microbots Get the Lead Out--of Wastewater 微型机器人铲除废水中的铅

时刻: 2017年05月31日 | 作者: admin | 来历: 不知道

撰文:克里斯多夫·因塔利亚塔(Christopher Intagliata

翻译:陈旭琦

审校:乔虹

Water laced with heavy metals—like the drinking water in Flint, Michigan—can be stripped of contaminants using chemicals, filters, membranes,even electric current. But now researchers say they've created what could be a cheaper, more effective solution: a fleet of microscopic, self-propelled, aquatic robots. Each one the size of just 10 lined-up bacteria—so tiny that a billion will fit in a syringe.

能够经过化学品、滤器、过滤膜乃至电流来去除水中的重金属污染物质,密歇根弗林特市的饮用水便是一个比如。可是,现在研究人员称他们现已找到一种更廉价、更有用的处理方法:一群细小的、自推进的水中机器人。它们单个的尺度相当于10个并行摆放的细菌,小到一只注射器能够包容十亿个这种机器人。

 

Each tube-shaped microbot is a sandwich of three materials. A graphene outer layer, which binds to heavy metals. A middle layer of nickel, which gives the bots magnetic polarity, so they can be pulled through wastewater with magnets. And platinum inside—for propulsion. Just add a bit of peroxide to the wastewater, and it'll react with the platinum to form water and oxygen bubbles, which propel the tubes along.  

每个管状的机器人都由三种物质层层叠加而成。外层由石墨烯构成,它能和重金属结合。中间层由镍构成,它使得机器人有具磁极性,因而机器人就能够使用磁性在废水中举动。内层由铂构成,这是为了机器人的推进力而进行的规划。仅仅在废水中添加多一点过氧化物,它就会与铂进行反响产生水和氧气泡沫,然后推进管状机器人。

 

In an hour, a swarm of 200,000 bots scavenged 80 percent of the lead from three millimeters of tainted water. And the researchers estimate that it costs only about five cents a liter to do so. The findings are in the journalNano Letters. [Diana Vilela et al, Graphene-Based Microbots for Toxic Heavy Metal Removal and Recovery from Water]

在一个小时里,20万个机器人能够去除三毫米废水中80%的铅。研究人员估量处理一升的废水大约只会花费五美分。这项陈果宣布在《纳米通讯》(Nano Letters)(Graphene-Based Microbots for Toxic Heavy Metal Removal and Recovery from Water)。

 

The researchers envision the bots as a portable solution for small companies—they’d treat their water onsite instead of carting it to a treatment plant. And after the robots do the rounds, the heavy metals can be stripped away. Meaning companies can reuse the heavy metals, and, ultimately, keep them out of our waterways.

 

研究人员料想这种机器人会成为小公司的快捷式处理方案,他们能够在现场处理废水,而不是将废水运送到专业处理工厂。在机器人完结作业后,重金属会从废水中铲除。这意味着公司能够重复使用重金属,而且最终使重金属不进入咱们的水路。

 

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