21. Some of the first recovery units employed the use of Cottrell s electrostatic precipitator for dust recovery. 22. Moreover, smoke and dust released through electrostatic precipitators , which used to cause less air pollution. 23. Electrostatic precipitators solve this problem somewhat by drawing particle-laden air past collector plates in the unit. 24. The Friedrich C-90A, an electrostatic precipitator , was top rated in Consumer Reports in 1992. 25. And they, in turn, would buy precipitators , scrubbers, and other machines that remove pollutants. 26. It was suitable for high-power applications, e . g . electrolysis cells and electrostatic precipitators . 27. The eight chimneys were demolished and electrostatic precipitators were added for the units when the large smokestack was built. 28. The low-voltage, two-stage precipitator is generally used for filtration in air-conditioning systems. 29. Within a year, all of the Board s investments had been repaid and the precipitator business was under way. 30. However, both Trenton units have electrostatic precipitators designed to capture 99 % of fly ash emissions from coal burning.
