Spectrometric Analysis for Pulse Jet Mixer Testing

ZEIGLER, KRISTINE

Savannah River Site (S.C.)

关键词: Velocity Absorbance;    Testing;    Clay;    Absorption Spectroscopy;    Absorption;   

DOI  :  10.2172/835575
RP-ID  :  WSRC-TR-2004-00370
RP-ID  :  AC09-96SR18500
RP-ID  :  835575

美国|英语

来源: UNT Digital Library

【 摘 要 】

The Analytical Development Section (ADS) was tasked with providing support for a Hanford River Protection Program-Waste Treatment Program (RPP-WTP) project test involving absorption analysis for non-Newtonian pulse jet mixer testing for small scale (PJM) and prototype (CRV) tanks with sparging. Tanks filled with clay were mixed with various amounts of powdered dye as a tracer. The objective of the entire project was to determine the best mixing protocol (nozzle velocity, number of spargers used, total air flow, etc.) by determining the percent mixed volume through the use of an ultraviolet-visible (UV-Vis) spectrometer. The dye concentration within the sample could be correlated to the volume fraction mixed in the tank. Samples were received in vials, a series of dilutions were generated from the clay, allowed to equilibrate, then centrifuged and siphoned for the supernate liquid to analyze by absorption spectroscopy. Equilibration of the samples and thorough mixing of the samples were a continuous issue with dilution curves being difficult to obtain. Despite these technical issues, useful data was obtained for evaluation of various mix conditions.