Masters Theses
Abstract
"This study was undertaken to investigate factors governing the release of pollutants from sediments and subsequent effects on water quality. Studies were carried out to: 1) determine the characteristics of selected sediments; 2) determine the level of release of pollutants under batch and fill and draw conditions; 3) determine the effect of temperature and pH on release mechanisms; 4) determine the importance of microbial (uninhibited) release and physio-chemical (inhibited) release processes.
The sediment utilized was from the Missouri River at Jefferson City, Missouri, and the Burgher Branch near Rolla, Missouri. Five environmental conditions to evaluate the effects of pH and temperature were observed using a pH of 6, 8, and 10 at 22°C and a pH of 8 at 5°C and 35°C. The physio-chemical (inhibited) release reactor bottles contained 1 gm/liter mercuric chloride to inhibit microbial growth and chemical oxygen demand (COD). Phosphorus and nitrogen were monitored in supernatant.
Research results indicated that the mechanisms of release of organics from sediments were mostly physiochemical in nature rather than due to microbial activity. Release mechanisms were found to be more pH dependent than temperature dependent. Increased pH brought about corresponding increases in organic release which may be explained in part by the increased dissociation of weak organic acids at higher pHs. Under test conditions used the pollutant release reached a nearly constant level in a matter of days"--Abstract, pages ii-iii.
Advisor(s)
Wixson, Bobby G.
Committee Member(s)
Jennett, J. Charles
Gale, Nord L.
Department(s)
Civil, Architectural and Environmental Engineering
Degree Name
M.S. in Civil Engineering
Sponsor(s)
Supported in part by United States. Environmental Protection Agency. Office of Water Programs
Publisher
University of Missouri--Rolla
Publication Date
1973
Pagination
xi, 88 pages
Note about bibliography
Includes bibliographical references (pages 86-87).
Geographic Coverage
Jefferson City (Mo.)
Rolla (Mo.)
Rights
© 1973 Lloyd Aldon Hinkle, Jr., All rights reserved.
Document Type
Thesis - Open Access
File Type
text
Language
English
Subject Headings
River sediments -- Missouri -- AnalysisContaminated sedimentsWater quality -- Testing
Thesis Number
T 2886
Print OCLC #
6029572
Electronic OCLC #
912303357
Recommended Citation
Hinkle, Lloyd Aldon Jr., "Release of pollutants from aquatic sediments" (1973). Masters Theses. 3570.
https://scholarsmine.mst.edu/masters_theses/3570
Comments
This investigation was supported in part by Professional Training Grant No. 1P2-WP-278-01 and T-900.21 from the Office of Water Programs, Environmental Protection Agency.