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Title: Mesocosm study of the Zone of Influence (ZOI) in sediment deposited over active caps - with and without bioturbation (ER-2427 SERDP Project)

Abstract

Objectives: - Determine whether a Zone of Influence (ZOI) develops in contaminated sediment deposited over active caps; - Evaluate the effects of bioturbation on development of the ZOI; - Improve understanding of the relationships among surface sediment recontamination, remediated contaminated sediments, and biological receptors. Hypothesis: A Zone of Influence (ZOI) will develop in contaminated sediment deposited over active caps and bioturbation will enhance the remedial effectiveness. The effectiveness of the caps will be assessed by evaluating the spatial extent and chemical characteristics of the ZOI that develops in the sediment that accumulates over the caps. Bioturbation may be important in ZOI development by mixing accumulating sediments with cap materials. This study will include mesocosms both with and without bioturbating organisms. Biouptake in caged organisms within the mesocosms will be compared with results from diffusive gradients in thin films (DGT) probes, which have the unique ability to detect fine vertical gradients in metal availability and speciation. Key Points: - Asian Clams were selected to create bioturbation in the experiment; - California Blackworms were selected to test toxicity and bioavailability; - Each mesocosm will receive 0.5 mL/min of synthetic fresh water; - Properties of the synthetic fresh water were measured and comparedmore » to Nanopure DI water; - Contaminated sediment will be added to each mesocosm throughout the experiment to determine whether a ZOI develops between the sediment and active cap; - Metal bioavailability and ZOI formation will be compared between mesocosms with and without bioturbation.« less

Authors:
; ;  [1]
  1. Savannah River National Laboratory (United States)
Publication Date:
Research Org.:
WM Symposia, Inc., PO Box 27646, 85285-7646 Tempe, AZ (United States)
OSTI Identifier:
23005510
Report Number(s):
INIS-US-21-WM-P32
TRN: US21V1491045844
Resource Type:
Conference
Resource Relation:
Conference: WM2019: 45. Annual Waste Management Conference, Phoenix, AZ (United States), 3-7 Mar 2019; Other Information: Country of input: France; available online at: https://www.xcdsystem.com/wmsym/2019/index.html
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; AVAILABILITY; CLAMS; COMPARATIVE EVALUATIONS; DEPOSITS; FRESH WATER; METALS; RECEPTORS; SEDIMENTS; THIN FILMS; TOXICITY

Citation Formats

Burgess, Thomas F., Knox, A. S., and Paller, M. H. Mesocosm study of the Zone of Influence (ZOI) in sediment deposited over active caps - with and without bioturbation (ER-2427 SERDP Project). United States: N. p., 2019. Web.
Burgess, Thomas F., Knox, A. S., & Paller, M. H. Mesocosm study of the Zone of Influence (ZOI) in sediment deposited over active caps - with and without bioturbation (ER-2427 SERDP Project). United States.
Burgess, Thomas F., Knox, A. S., and Paller, M. H. 2019. "Mesocosm study of the Zone of Influence (ZOI) in sediment deposited over active caps - with and without bioturbation (ER-2427 SERDP Project)". United States.
@article{osti_23005510,
title = {Mesocosm study of the Zone of Influence (ZOI) in sediment deposited over active caps - with and without bioturbation (ER-2427 SERDP Project)},
author = {Burgess, Thomas F. and Knox, A. S. and Paller, M. H.},
abstractNote = {Objectives: - Determine whether a Zone of Influence (ZOI) develops in contaminated sediment deposited over active caps; - Evaluate the effects of bioturbation on development of the ZOI; - Improve understanding of the relationships among surface sediment recontamination, remediated contaminated sediments, and biological receptors. Hypothesis: A Zone of Influence (ZOI) will develop in contaminated sediment deposited over active caps and bioturbation will enhance the remedial effectiveness. The effectiveness of the caps will be assessed by evaluating the spatial extent and chemical characteristics of the ZOI that develops in the sediment that accumulates over the caps. Bioturbation may be important in ZOI development by mixing accumulating sediments with cap materials. This study will include mesocosms both with and without bioturbating organisms. Biouptake in caged organisms within the mesocosms will be compared with results from diffusive gradients in thin films (DGT) probes, which have the unique ability to detect fine vertical gradients in metal availability and speciation. Key Points: - Asian Clams were selected to create bioturbation in the experiment; - California Blackworms were selected to test toxicity and bioavailability; - Each mesocosm will receive 0.5 mL/min of synthetic fresh water; - Properties of the synthetic fresh water were measured and compared to Nanopure DI water; - Contaminated sediment will be added to each mesocosm throughout the experiment to determine whether a ZOI develops between the sediment and active cap; - Metal bioavailability and ZOI formation will be compared between mesocosms with and without bioturbation.},
doi = {},
url = {https://www.osti.gov/biblio/23005510}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {7}
}

Conference:
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