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The Smog-Sucking Tower Has Arrived in China (vice.com)
Jamie Fullerton, reporting for Motherboard:Daan Roosegaarde reached into the pocket of his suit jacket, pulled out a plastic bag filled with black powder, and waved it around. "This is Beijing smog," Roosegaarde said, before gesturing to the seven-metre tall, gently humming metal tower we are stood next to in the Chinese capital's art district, 798. "We collected it from the tower yesterday. Incredibly disgusting." Dutch designer Roosegaarde's smog souvenir may be disgusting, but it's the byproduct of an invention that he has touted as a potential alleviator of China's pollution problems. His "smog-free tower" sucks air, filters it with ion technology, with Roosegaarde having explained: "By charging the Smog Free Tower with a small positive current, an electrode will send positive ions into the air. These ions will attach themselves to fine dust particles. A negatively charged surface -- the counter electrode -- will then draw the positive ions in, together with the fine dust particles. The fine dust "is collected together with the ions and stored inside of the tower." With the dust collected, the tower then spews out cleaner air through vents, creating a "bubble" in the area surrounding it that contains, according to Roosegaarde, up to 70 percent fewer pollution particles than the pre-cleaned air.
So he took a factory electrostatic filter, but didn't include the scrubbers? So this is exciting how?
Much better just to install them on the factories themselves with the scrubbers....
why not mount them on the smokestacks of the factories making the smoke in the first place?
Because then Chinese made iPhones and Androids would cost a more money, so you and everyone else would buy the ones from India or Vietnam or Africa or some other third world hellhole instead. You are the reason not to mount them on the smokestacks.
Maw! Fire up the karma burner!
I want to install one in the company bathroom.
"That's the way to do it" - Punch
You're going to die one day, so why bother with things like eating, sleeping and breathing?
So what do they do to mitigate the Ozone that's invariably produced by ionic air filtration?
This certainly isn't the first time charging air has been used as an air cleaner (anybody remember the "Ionic Breeze" ads from a decade back?)
I seem to recall Consumer Reports investigating ionic air filters and concluding they produced dangerous levels of Ozone, which is an irritant in its own right which can worsen Asthma, deaden the sense of smell, raise sensitivity to pollen, and cause permanent lung damage...
I guess I'll have to read TFA, but I suspect they're more interested in aesthetic air cleaning, not actual health improvement.
-- Sometimes you have to turn the lights off in order to see.
Why not put these closer to the sources of pollution? Like the smokestacks and exhaust ports from all those factories. Wouldn't that be more efficient?
But what affluent person wants to live next to that? No, better put them in the optimum locations to boost real estate values, and give the growing middle-class something to aspire to (There's a clean-air tower in your neighborhood, hmm? Well our tower is practically in our back yard!). Peasants get the factory-side views, with complimentary side of black lung, as always.
"I love animals! Some are cute, others are tasty, what's not to like?" - Betsy Schroeder, Jeopardy contestant
You know another word for that ozone released at low levels? Smog. A better title for this article would be "Smog-Sucking Tower that Doesn't Suck Smog, Just a Little Bit of Particulate...Oh, Also, it Creates Smog".
At least one point is mentioned in the article: They hope that by having "bubbles" of relatively fresh air in parks, etc. for contrast, they can boost public support for more substantial smog-reducing policies.
They're not trying to clean the cities air, that would take a far larger undertaking, but to create at least limited public places where the air is clean(er). You're argument is akin to "Why use air conditioning - it only makes it hotter outside?"
--- Most topics have many sides worth arguing, allow me to take one opposite you.
Batteries are pretty good these days and you can put a lot of them on a bike. I had some students in 2000 who took the frame of a 125cc motorbike, stuck lead-acid batteries everywhere, fitted a motor and that thing could go. With the batteries of today you could get a lot more range with something that doesn't have to be very big - a Vespa sized thing is going to get you up hills.