packed bed

(redirected from Packed column)

packed bed

[′pakt ′bed]
(chemical engineering)
A fixed layer of small particles or objects arranged in a vessel to promote intimate contact between gases, vapors, liquids, solids, or various combinations thereof; used in catalysis, ion exchange, sand filtration, distillation, absorption, and mixing.
References in periodicals archive ?
Tenders are invited for Supply of Gas Chromatographic Packed Column
Outlet samples after treatment in each experiment were collected every 10 minutes from the bottom of packed column and the unadsorbed concentration of dyes in SSAS was analyzed by spectrophotometer.
2005, "Biosorption of copper, cobalt and nickel by marine alga Ulva reticulate in a packed column," Chemosphere, 60, pp.
The resulting packed column had sand bulk densities of ~ 1.
Among the reasons given for this emphasis is the considerable expense involved, the lack of an update of Supina's classic textbook, The Packed Column in Gas chromatography, and available Web resources (listed).
Packed column Vanguard air strippers from 1 to 5-ft-diam.
ADA and collaborator Kinetico Incorporated, a water treatment system engineering company, are planning a field test involving a packed column of the amended silicate for summer 2005 at a facility in New Mexico, where the ADA formulation will be tested against two commercially available competitors.
Thus, Eq 3 provides an indirect method in determining the liquid contact angle of the powdered solid sample, that is, by measuring the liquid penetration rate in its packed column.
Operating on the principle of separating particles using high resolution packed column hydrodynamic chromatography (HDC), the PL-PSDA measures complex particle size distributions with high precision and accuracy, according to the literature, which is said to make it ideal for narrow distribution, multi-modal or polydisperse samples.
Reanalysis of these 20 blood specimens by gas chromatography with flame-ionization detection on a packed column [5] gave similar qualitative and quantitative results.