After writing about the EPA’s new proposal to reduce greenhouse gas emissions 30% from 2005 levels by 2030, and China’s battle against smog, we want to present a new “Smog-Sucking Electrostatic Vacuum Cleaner” idea that cleanses polluted air:
Copper coils buried in the ground create a positively charged electrostatic field. All particles of ten nanometres or more — including smog — become positively charged, and thus attracted to the grounded earth, where they are collected. “It’s a loop of fresh air,”
The method of ionizing smog particles came from Delft University of Technology researcher Bob Ursem who noticed that tiny particles of organic debris would move from the Atlantic Ocean onto the beach. The particles would fly over the dunes, towards the bushes and then over the bushes. Ursem explained that the particles had a negative charge because of friction and they floated above the negatively charged bushes, “…indicating that the electrical force is greater than the gravity force”. Ursem began studying the negatively charged particles by replicating this phenomenon in his lab and he eventually was able to reverse the charge on the particles using an electrostatic field. Under lab conditions, Ursem created an “ionic wind” as the force of positively charged particles attached themselves to the ground. This sweeping discovery is fascinating also because of Roosegaarde’s awesome plans and creativity. Roosegaarde is trying to build such devices to place on the sides of buildings in Beijing to reduce smog in the city. The latest project specs indicate that the pockets of cleansed air will be in parks so that people can enjoy a 30,000 meters cubed area of fresh air. Another testament to Roosegaarde’s creativity is that he would like the particles in smog that get collected by the air-purifying devices to be turned into “diamond” rings representing the smog that is collected in this process.