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Selenium Removal from Acidic Waste Water Using Zinc Reduction and Lime Neutralization.

PB299472

Publication Date	1978
Personal Author	Marchant, W. N.; Dannenberg, R. O.; Brooks, P. T.
Page Count	16
Abstract	Improved removal of toxic selenium from zinc smelter acidic gas scrubber effluent was achieved by using zinc dust to precipitate soluble selenium prior to lime neutralization. Lime neutralization alone decreased selenium in the waste water from, typically, 6 parts per million to 2 parts per million, whereas the use of zinc dust precipitant gave an effluent containing less than 0.1 part per million of selenium. Research progress was accelerated by developing a simple and rapid means for determining selenium in waste water. The technique enabled visual semiquantitative selenium determinations that later were confirmed quantitatively by X-ray fluorescence.
Keywords	Water pollution control Waste water Industrial waste treatment Selenium Precipitation(Chemistry) Zinc Calcium oxides Neutralizing Removal Effluents
Source Agency	Bureau of Mines
NTIS Subject Category	68D - Water Pollution & Control
Corporate Authors	Bureau of Mines, Salt Lake City, UT. Salt Lake City Metallurgy Research Center.
Document Type	Technical Report
Title Note	Rept. of investigations.
NTIS Issue Number	197925

Selenium Removal from Acidic Waste Water Using Zinc Reduction and Lime Neutralization.

Selenium Removal from Acidic Waste Water Using Zinc Reduction and Lime Neutralization.
PB299472

Publication Date	1978
Personal Author	Marchant, W. N.; Dannenberg, R. O.; Brooks, P. T.
Page Count	16
Abstract	Improved removal of toxic selenium from zinc smelter acidic gas scrubber effluent was achieved by using zinc dust to precipitate soluble selenium prior to lime neutralization. Lime neutralization alone decreased selenium in the waste water from, typically, 6 parts per million to 2 parts per million, whereas the use of zinc dust precipitant gave an effluent containing less than 0.1 part per million of selenium. Research progress was accelerated by developing a simple and rapid means for determining selenium in waste water. The technique enabled visual semiquantitative selenium determinations that later were confirmed quantitatively by X-ray fluorescence.
Keywords	Water pollution control Waste water Industrial waste treatment Selenium Precipitation(Chemistry) Zinc Calcium oxides Neutralizing Removal Effluents
Source Agency	Bureau of Mines
NTIS Subject Category	68D - Water Pollution & Control
Corporate Authors	Bureau of Mines, Salt Lake City, UT. Salt Lake City Metallurgy Research Center.
Document Type	Technical Report
Title Note	Rept. of investigations.
NTIS Issue Number	197925