Zeolite characteristics for maximum uranium uptake from solution and potential for uranium immobilization in soils, 1997

Collection:
Atlanta University and Clark Atlanta University Theses and Dissertations
Title:
Zeolite characteristics for maximum uranium uptake from solution and potential for uranium immobilization in soils, 1997
Creator:
Smith, Mitchell Martinis
Contributor to Resource:
Parker, Cass D.
Date of Original:
1997-05-01
Subject:
Degrees, Academic
Dissertations, Academic
Location:
United States, Georgia, Fulton County, Atlanta, 33.749, -84.38798
Medium:
dissertations
theses
Type:
Text
Format:
application/pdf
Description:
Degree Type: thesis
Degree Name: Master of Science (MS)
Date of Degree: 1997
Granting Institution: Clark Atlanta University
Department/ School: Chemistry
Zeolites, having stable porous structures and high ion exchange capabilities are potential buffer materials that can be added to a soil matrix to improve the ion exchange ability. This study investigated the performance of various zeolites for the uptake of uranium as soluble UO2 2+, with the ultimate goal being to develop an in situ ion trap to immobilize potentially leachable residue in uranium contaminated soils. The natural zeolite, clinoptilolite and synthetic zeolites, K-L, LZY, 13X, and mordenite were evaluated for the uptake of UO2 2+ in both batch and column percolation studies. In the preliminary batch and column studies, mordenite, LZY, and K-L were most effective for uranium uptake. The pH was an important factor in governing which uranium species would be present in solution. In the pH controlled batch studies, mordenite demonstrated superior performance to the other zeolites as well as to a clay-soil for uranium uptake. With time, initially absorbed uranium was dissolved from the soil into solution whereas the zeolite showed no such release of uranium. Uranium uptake was found to be dependent on zeolite pore size, solution pH, cation concentrations, and amount of sorbent
Metadata URL:
http://hdl.handle.net/20.500.12322/cau.td:1997_smith_mitchell_m
Language:
eng
Holding Institution:
Clark Atlanta University
Rights:
Rights Statement information

Locations