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Title: Radium removal from water by manganese dioxide adsorption and diatomaceous-earth filtration. Final report

Abstract

The study reveals that radium adsorption onto precipitated MnO2 followed by diatomaceous earth (DE) filtration is a very effective treatment process for radium-contaminated water. Radium removals in the range of 80% to 97% were observed for performed MnO2 feed concentrations of 0.63 and 1.26 mg/L as Mn in groundwaters with hardness in the range of 100 to 245 mg/L as CaCO3. Radium removal increased slightly with increasing pH whereas it decreased slightly with increasing hardness and iron (II) concentrations. Pilot studies were performed in Lemont, IL using DE filtration on a groundwater containing 12 pCi/L226Ra and 6 pCi/L228. Radium removals for both the pilot plants ranged from 90% to 97% at a MnO2 feed concentration of 1.26 mg/L as Mn, a total hardness of 245 mg/L as CaCO3, and a pH of 6.5. The costs of water treatment by MnO2 adsorption and DE filtration were estimated at $0.71 per 1000 gal for 280,000 gpd plants and $0.47 for 1 Mgd plants.

Authors:
;
Publication Date:
Research Org.:
Houston Univ., TX (United States). Dept. of Civil and Environmental Engineering
OSTI Identifier:
5865700
Report Number(s):
PB-92-115260/XAB
Resource Type:
Technical Report
Resource Relation:
Other Information: Sponsored by Environmental Protection Agency, Cincinnati, OH. Drinking Water Research Div
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; ADSORBENTS; SORPTIVE PROPERTIES; GROUND WATER; DECONTAMINATION; MANGANESE OXIDES; RADIUM; MATERIALS RECOVERY; ADSORPTION; COST; FILTRATION; PILOT PLANTS; RADIOECOLOGICAL CONCENTRATION; ALKALINE EARTH METALS; CHALCOGENIDES; CLEANING; ECOLOGICAL CONCENTRATION; ELEMENTS; FUNCTIONAL MODELS; HYDROGEN COMPOUNDS; MANAGEMENT; MANGANESE COMPOUNDS; METALS; OXIDES; OXYGEN COMPOUNDS; PROCESSING; RECOVERY; SEPARATION PROCESSES; SORPTION; SURFACE PROPERTIES; TRANSITION ELEMENT COMPOUNDS; WASTE MANAGEMENT; WASTE PROCESSING; WATER; 540330* - Environment, Aquatic- Radioactive Materials Monitoring & Transport- (1990-); 540130 - Environment, Atmospheric- Radioactive Materials Monitoring & Transport- (1990-)

Citation Formats

Patel, R, and Clifford, D. Radium removal from water by manganese dioxide adsorption and diatomaceous-earth filtration. Final report. United States: N. p., 1991. Web.
Patel, R, & Clifford, D. Radium removal from water by manganese dioxide adsorption and diatomaceous-earth filtration. Final report. United States.
Patel, R, and Clifford, D. 1991. "Radium removal from water by manganese dioxide adsorption and diatomaceous-earth filtration. Final report". United States.
@article{osti_5865700,
title = {Radium removal from water by manganese dioxide adsorption and diatomaceous-earth filtration. Final report},
author = {Patel, R and Clifford, D},
abstractNote = {The study reveals that radium adsorption onto precipitated MnO2 followed by diatomaceous earth (DE) filtration is a very effective treatment process for radium-contaminated water. Radium removals in the range of 80% to 97% were observed for performed MnO2 feed concentrations of 0.63 and 1.26 mg/L as Mn in groundwaters with hardness in the range of 100 to 245 mg/L as CaCO3. Radium removal increased slightly with increasing pH whereas it decreased slightly with increasing hardness and iron (II) concentrations. Pilot studies were performed in Lemont, IL using DE filtration on a groundwater containing 12 pCi/L226Ra and 6 pCi/L228. Radium removals for both the pilot plants ranged from 90% to 97% at a MnO2 feed concentration of 1.26 mg/L as Mn, a total hardness of 245 mg/L as CaCO3, and a pH of 6.5. The costs of water treatment by MnO2 adsorption and DE filtration were estimated at $0.71 per 1000 gal for 280,000 gpd plants and $0.47 for 1 Mgd plants.},
doi = {},
url = {https://www.osti.gov/biblio/5865700}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Nov 01 00:00:00 EST 1991},
month = {Fri Nov 01 00:00:00 EST 1991}
}

Technical Report:
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