A study of the sulfide precipitation process for the removal of heavy metallic ions from aqueous system

dc.contributor.advisorMyrick, Henry Nugent
dc.contributor.committeeMemberBonar, Albert J.
dc.contributor.committeeMemberSeymore, Raymond B.
dc.creatorFarber, Allan Lewis
dc.description.abstractA new process for the removal of metallic ions in industrial waste waters has been developed using (1) the sulfide ion as a precipitation agent, (2) a cationic organic polyelectrolyte as a coagulant aid, and (3) sedimentation and two micron filtration operations for solids-liquid separation. On the basis of laboratory studies, potential effluent water quality would be four µg/l for chromium, four µg/l for iron and five µg/l for copper. On the basis of both laboratory and pilot plant studies, the effluent water quality was four µg/l for mercury. Maximum allowable, effluent concentrations for copper, chromium, and mercury in both inland and tidal waters of the State of Texas are 1000 µg/l, 5000 µg/l, and 5 µg/l respectively. Process design parameters for sulfide reaction with these metallic ions were evaluated. These parameters include the effect of pH, sulfide reaction time, rate of sedimentation of precipitants, reaction time for coagulant aid and filtration rates. Atomic absorption spectrophotometric techniques for the measurement of metallic ions were very accurate for the detection of these metals in the microgram per liter (µg/l) concentration range.
dc.description.departmentCivil and Environmental Engineering, Department of
dc.format.digitalOriginreformatted digital
dc.rightsThis item is protected by copyright but is made available here under a claim of fair use (17 U.S.C. Section 107) for non-profit research and educational purposes. Users of this work assume the responsibility for determining copyright status prior to reusing, publishing, or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions requires express permission of the copyright holder.
dc.titleA study of the sulfide precipitation process for the removal of heavy metallic ions from aqueous system
dcterms.accessRightsThe full text of this item is not available at this time because it contains documents that are presumed to be under copyright and are accessible only to users who have an active CougarNet ID. This item will continue to be made available through interlibrary loan.
thesis.degree.collegeCollege of Engineering
thesis.degree.departmentCivil Engineering, Department of
thesis.degree.disciplineCivil Engineering
thesis.degree.grantorUniversity of Houston
thesis.degree.nameMaster of Science


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