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Title: Process for removing metals from water

Abstract

A process for removing metals from water including the steps of prefiltering solids from the water, adjusting the pH to between about 2 and 3, reducing the amount of dissolved oxygen in the water, increasing the pH to between about 6 and 8, adding water-soluble sulfide to precipitate insoluble sulfide- and hydroxide-forming metals, adding a containing floc, and postfiltering the resultant solution. The postfiltered solution may optionally be eluted through an ion exchange resin to remove residual metal ions. 2 tabs.

Inventors:
; ;
Issue Date:
Research Org.:
Oak Ridge National Lab., TN (USA)
OSTI Identifier:
6874265
Patent Number(s):
-US-A6067073
Assignee:
TIC; EDB-88-177943
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 54 ENVIRONMENTAL SCIENCES; INDUSTRIAL WASTES; WATER TREATMENT; METALS; REMOVAL; FILTERS; FILTRATION; FLOCCULATION; INVENTIONS; ION EXCHANGE MATERIALS; OXYGEN; PH VALUE; SULFIDES; CHALCOGENIDES; ELEMENTS; MATERIALS; NONMETALS; PRECIPITATION; SEPARATION PROCESSES; SULFUR COMPOUNDS; WASTES 320305* -- Energy Conservation, Consumption, & Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management; 520200 -- Environment, Aquatic-- Chemicals Monitoring & Transport-- (-1989)

Citation Formats

Napier, J.M., Hancher, C.M., and Hackett, G.D. Process for removing metals from water. United States: N. p., 1987. Web.
Napier, J.M., Hancher, C.M., & Hackett, G.D. Process for removing metals from water. United States.
Napier, J.M., Hancher, C.M., and Hackett, G.D. Mon . "Process for removing metals from water". United States.
@article{osti_6874265,
title = {Process for removing metals from water},
author = {Napier, J.M. and Hancher, C.M. and Hackett, G.D.},
abstractNote = {A process for removing metals from water including the steps of prefiltering solids from the water, adjusting the pH to between about 2 and 3, reducing the amount of dissolved oxygen in the water, increasing the pH to between about 6 and 8, adding water-soluble sulfide to precipitate insoluble sulfide- and hydroxide-forming metals, adding a containing floc, and postfiltering the resultant solution. The postfiltered solution may optionally be eluted through an ion exchange resin to remove residual metal ions. 2 tabs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {6}
}