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contributor authorVenbakm C. Gopalratnam
contributor authorGary F. Bennett
contributor authorRobert W. Peters
date accessioned2017-05-08T22:14:12Z
date available2017-05-08T22:14:12Z
date copyrightNovember 1992
date issued1992
identifier other39941130.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/74667
description abstractThis study examined the effects of various dosages of chemical collectors on the removal in a combined metal hydroxide precipitation and air‐flotation of heavy metals from industrial wastevvaters. The residual metal concentrations were sensitive to pH, collector dosage, and air‐injection rate. The optimum pH for treatment of the industrial wastewaters was 9.18, determined from jar tests. Although this pH does not necessarily represent the maximum removal of any one metal, it represented the optimal removal of the combined metals system. A single collector dosage did not maximize the removal of each metal from the industrial wastewaters used in the study. Metal removals were slightly greater using the nozzle air flotation system as compared to the induced air flotation system. The study also found that a single collector dosage is not effective for all metals, although removals of more than 80% were consistently achieved. The removal of heavy metals and oil appears to occur through a coprecipitation‐adsorption mechanism.
publisherAmerican Society of Civil Engineers
titleEffect of Collector Dosage on Metal Removal by Precipitation/Flotation
typeJournal Paper
journal volume118
journal issue6
journal titleJournal of Environmental Engineering
identifier doi10.1061/(ASCE)0733-9372(1992)118:6(923)
treeJournal of Environmental Engineering:;1992:;Volume ( 118 ):;issue: 006
contenttypeFulltext


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