Phosphorus readsorption on Occoquan sediments
The purpose of this investigation was to determine the extent of phosphorus readsorption on Occoquan sediments and the amount of subsequent removal because of settling of the particles with time. Occoquan sediments were placed in six polyurethane cylinders and submerged. In two separate experiments,...
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ndltd-VTETD-oai-vtechworks.lib.vt.edu-10919-438842021-05-05T05:40:31Z Phosphorus readsorption on Occoquan sediments Shugart, Steven Lee Environmental Sciences and Engineering Hoehn, Robert C. Randall, Clifford W. Sherrard, Joseph H. phosphate readsorption LD5655.V855 1976.S55 The purpose of this investigation was to determine the extent of phosphorus readsorption on Occoquan sediments and the amount of subsequent removal because of settling of the particles with time. Occoquan sediments were placed in six polyurethane cylinders and submerged. In two separate experiments, the cylinders were driven anaerobic, which allowed phosphorus, previously bound in the sediments, to release. The sedimentâ water system was then reaerated and mixed with a porous air diffuser. Analyses were conducted before and after the mixing period. From the results obtained, the following conclusions were drawn: phosphate readsorption occurred upon mixing the system, and as the turbidity decreased, the phosphate concentration decreased; phosphate readsorption occurred in a twoâ step process; each suspension tended toward equilibrium after mixing; interstitial waters contributed significant amounts of phosphorus upon mixing of the sedimentâ water systems; Occoquan sediments released variable amounts of phosphorus even within samples from similar sites; sediments from the Occoquan Creek arm contained less phosphorus than Bull Run sediments; and sediments low in phosphorus concentrations removed greater amounts of phosphorus in a shorter period of time. Master of Science 2014-03-14T21:41:07Z 2014-03-14T21:41:07Z 1976-03-05 2012-07-24 2012-07-24 2012-07-24 Thesis Text etd-07242012-040030 http://hdl.handle.net/10919/43884 http://scholar.lib.vt.edu/theses/available/etd-07242012-040030/ OCLC# 39285019 LD5655.V855_1976.S55.pdf In Copyright http://rightsstatements.org/vocab/InC/1.0/ vi, 88 leaves BTD application/pdf application/pdf Virginia Tech |
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phosphate readsorption LD5655.V855 1976.S55 Shugart, Steven Lee Phosphorus readsorption on Occoquan sediments |
description |
The purpose of this investigation was to determine the extent of
phosphorus readsorption on Occoquan sediments and the amount of subsequent
removal because of settling of the particles with time. Occoquan
sediments were placed in six polyurethane cylinders and submerged. In two separate experiments, the cylinders were driven anaerobic,
which allowed phosphorus, previously bound in the sediments,
to release. The sedimentâ water system was then reaerated and mixed
with a porous air diffuser. Analyses were conducted before and after
the mixing period.
From the results obtained, the following conclusions were drawn:
phosphate readsorption occurred upon mixing the system, and as the
turbidity decreased, the phosphate concentration decreased; phosphate readsorption occurred in a twoâ step process; each suspension tended
toward equilibrium after mixing; interstitial waters contributed significant
amounts of phosphorus upon mixing of the sedimentâ water
systems; Occoquan sediments released variable amounts of phosphorus
even within samples from similar sites; sediments from the Occoquan
Creek arm contained less phosphorus than Bull Run sediments; and
sediments low in phosphorus concentrations removed greater amounts
of phosphorus in a shorter period of time. === Master of Science |
author2 |
Environmental Sciences and Engineering |
author_facet |
Environmental Sciences and Engineering Shugart, Steven Lee |
author |
Shugart, Steven Lee |
author_sort |
Shugart, Steven Lee |
title |
Phosphorus readsorption on Occoquan sediments |
title_short |
Phosphorus readsorption on Occoquan sediments |
title_full |
Phosphorus readsorption on Occoquan sediments |
title_fullStr |
Phosphorus readsorption on Occoquan sediments |
title_full_unstemmed |
Phosphorus readsorption on Occoquan sediments |
title_sort |
phosphorus readsorption on occoquan sediments |
publisher |
Virginia Tech |
publishDate |
2014 |
url |
http://hdl.handle.net/10919/43884 http://scholar.lib.vt.edu/theses/available/etd-07242012-040030/ |
work_keys_str_mv |
AT shugartstevenlee phosphorusreadsorptiononoccoquansediments |
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1719402654555176960 |