Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Reclamation of aluminum finishing sludges /
Author Saunders, F. Michael.
Publisher U.S. Environmental Protection Agency, Water Engineering Research Laboratory,
Year Published 1988
Report Number EPA/600-S2-87-103
OCLC Number 611942818
Subjects Aluminum industry and trade--Waste disposal.
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600-S2-87-103 In Binder Headquarters Library/Washington,DC 01/30/2018
EJBD  EPA 600-S2-87-103 In Binder Headquarters Library/Washington,DC 10/31/2018
Collation 7 pages : illustrations ; 28 cm
Caption title. At head of title: Project summary. "Jan. 1988." "EPA/600-S2-87-103."
Contents Notes
"The reclamation of aluminum-anodizing sludges produced as a result of finishing extruded architectural aluminum using etching and anodizing processes was studied by Georgia Tech Research Corporation. Two sequential phases focused on (1) enhanced dewatering of aluminum-anodizing sludges with recessed-chamber filter presses and (2) acidic extraction of dewatered aluminum-anodizing sludges to produce commercial-strength solutions of aluminum sulfate, i.e., liquid alum. A high-pressure (14 to 15 bar) and a diaphragm filter press were effective in dewatering aluminum anodizing sludges to cake solids contents of 27% to 29% and 25% to 31%, respectively. These values were well above the 21 % value required to justify pursuit of direct acidic extraction of aluminum. Commercial-strength solutions of aluminum sulfate with concentrations of 8% as AI2Oa were produced using conventional-neutralization, segregated-neutralization, etch-recovery sludge cakes. The trace metal contents of the alum products were, in general, typical of commercial products."