Characterization of the bidimensional size and charge distribution of sub- and supermicrometer particles in an electrostatic precipitator

Control technologies to prevent aerosol-based disease transmission in animal agriculture production settings: a review of established and emerging approaches

“…Mainly due to these differences in charging efficiency combined with size-dependent particle electrical mobility, ESPs commonly exhibit a size-dependent collection efficiency with a minimum efficiency in the 0.3–0.6 µm size range and are highly efficient in removing particles below or above this range. The latter has been shown in both experiments and numerical simulations ( 93 ). Since the electrodes can vary in configuration, ESPs can be designed in different configurations (e.g., multi-stage, wet or dry, wire-plate, tubular) for various applications.…”

“…Positive applied voltage yields positive ions, and negative applied voltage yields negative ions. Aerosol particles enter the ESP with the flow and become charged ( 93 ) via random collisions with ions [by a combination of diffusion ( 94 ) and field charging mechanisms ( 95 , 96 )], thus moving toward the grounded electrodes, provided the residence time in the ESP is sufficient for particle charging and electrophoretic deposition. While diffusion charging (Brownian with Coulomb drift motion, see Figure 5B ) is a more relevant charging mechanism of sub-micrometer-sized particles, field charging (charges following electric field lines, see Figure 5C ) is commonly the main mechanism of supermicrometer aerosol particle charging.…”

“…ESPs have also been used in various embodiments as bioaerosol samplers ( 101 – 104 ) or bioaerosol control devices ( 105 – 107 ). ESPs can control airborne bioaerosol by the collection effects (bioaerosols are collected onto the electrodes) and possibly ionization or reaction effects [viability of bioaerosols can decrease due to ozone, produced in some ESPs, or collision with high-energy ions ( 93 , 108 )]. The effectiveness of bioaerosol control is hence a combination of bioaerosol collection and inactivation, which in turn depends upon the particle’s physical efficiency, electric field strength, flow rate, relative humidity, and the design of the ESP.…”