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- W97512298 abstract "The aim of this work was to investigate the coagulating power of sodium aluminate, and to determine the optimum dose of the reagent and pH range of the water being purified. A solution of sodium aluminate, 0.5 M as Al/sub 2/O/sub 3/, was used, prepared by dissolving aluminum metal in concentrated alkali solution. The pH of the solution obtained was 13.80 at 20/sub 0/, and the alkalinity, determined by titration of the sodium aluminate with 0.1 M hydrochloric acid solution with the use of bromophenol blue as indicator, was 3.75 g-eq/liter. The industrial coagulant used was spent solution from processes of chemical scouring of aluminum and its alloys, containing 40 g/liter of aluminum, with a pH of 13.86 and an alkalinity of 7.5 g-eq/liter. It was determined that the optimum doses were 60-90 mg/liter as Al/sub 2/O/sub 3/. The criteria of good coagulation were a formation, during 1 min, of coarse rapidly setting flakes of aluminum hydroxide, and a low residual aluminum content not exceeding 0.5 mg/liter." @default.
- W97512298 created "2016-06-24" @default.
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- W97512298 date "1987-10-20" @default.
- W97512298 modified "2023-09-24" @default.
- W97512298 title "Use of alkaline aluminum-containing waste products of industrial plants for waste-water treatment" @default.
- W97512298 hasPublicationYear "1987" @default.
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