sparging


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sparging

[′spärj·iŋ]
(chemical engineering)
The process of forcing air through water to remove undesirable gases.
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(6) Sparging should exchange the headspace of the bottle at least ten times.
Sparging increases the rate of agitation in the tank, with sintered stainless steel plates or rods (called sparging elements) purging the water on a continuous basis.
Kosgi and J.N Zhou, A Review of in-situ air sparging for the remediation of voc-contaminated saturated soils and groundwater.
In real batch processes, nitrogen or air sparging can be used, together with in-line measurement of [CO.sub.2], to control the level of accumulated dissolved [CO.sub.2] to acceptable levels.
The large value of [k.sub.m], which results from vigorous mixing and sparging within the vessel, is consistent with the mass transfer of water between the gas and liquid phases being fast compared with the reaction kinetics.
Applications for porous metal range from filtration of gases and liquids, to flow control, diffusion, sparging, fluidizing, venting, web transport and wicking.
DeWind One-Pass Trenching Zeeland, MI, uses exclusive technology for the control and remediation of contaminated ground water to install groundwater extraction and collection systems, air sparging and for the construction of slurry walls, permeable reactive barriers and HDPE barriers.
OBJECTIVE: Our goal was to investigate changes in survival and gene expression in larval zebrafish Danio rerio after exposure to aggregates of [C.sub.60] prepared by two methods: a) stirring and sonication of [C.sub.60] in water ([C.sub.60]-water); and b) suspension of [C.sub.60] in THF followed by rotovaping, resuspension in water, and sparging with nitrogen gas (THF-[C.sub.60]).
Immediately after sparging, Carbo traps were capped, sealed with Teflon tape, individually bagged, and stored in air-tight, acid-washed canning jars purged with UHP nitrogen.
As nonscientists, risk managers can benefit from learning about the terms associated with these technologies, as well as the basic science behind some of the most commonly used remediation techniques, including ground water stripping, soil vapor extraction (SVE), air sparging, biosparging, bioventing, chemical oxidation and bioremediation.
In the past, conventional treatments such as pump and treat and air sparging have been the technologies of choice for cleaning up groundwater contaminated with chlorinated solvent.
The uniform porosity and pore size of porous metal products can establish consistent performance when used in applications such as diffusion, sound attenuation, venting, wicking, flow control, sparging (air/liquid contacting), flame arresting, filtration, and separation.