Particle Capture by Evaporating Cloud Drops

The capture efficiency was obtained experimentally near 30% relative humidity for cloud drops (56-93 (mu)m radius) with solid spheroidal particles of manganese hypophosphite (0.58-3.2 (mu)m radius) and near 90% relative humidity for drops (60-92 (mu)m radius) with hollow shells of lithium carbonate (2 (mu)m radius). In each experimental run a large number of widely space uniform form size drops fell through a monodisperse cloud of particles. Each efficiency was determined from several runs by measuring the collected particle mass using atomic absorption or emission spectroscopy. This experiment has provided the first measurements of thermodiffusiophoretic scavenging by evaporating drops as a function of particle size.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Atmospheric Sciences

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Leong, Keng Hung

• Physics, Atmospheric Science

Language dc:language

eng

Identifier

(UMI)AAI8026546

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/67805