國立高雄大學圖資館 |

Language: English

Back

In situ stabilization of persistent ...

Stanford University.

In situ stabilization of persistent organic contaminants in marine sediments.

Record Type:	Electronic resources : Monograph/item
Title/Author:	In situ stabilization of persistent organic contaminants in marine sediments.
Author:	Zimmerman, John Richard.
Description:	148 p.
Notes:	Adviser: Richard G. Luthy.
Notes:	Source: Dissertation Abstracts International, Volume: 65-11, Section: B, page: 5968.
Contained By:	Dissertation Abstracts International65-11B.
Subject:	Engineering, Environmental.
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3153524
ISBN:	049613924X

In situ stabilization of persistent organic contaminants in marine sediments.
Zimmerman, John Richard.

In situ stabilization of persistent organic contaminants in marine sediments. - 148 p.

Adviser: Richard G. Luthy.

Thesis (Ph.D.)--Stanford University, 2005.

In the first study, PCB- and PAH-contaminated sediment from Hunters Point was contacted with coke and activated carbon for periods of one and six months. Sediment treated with 3.4% by weight activated carbon showed reductions in aqueous equilibrium PCB and PAH concentrations and uptake by semi-permeable membrane devices, and reductions in PCB flux to overlying water in quiescent systems. Adding coke to contaminated sediment did not significantly decrease aqueous equilibrium PCB concentrations nor PCB or PAH availability in SPMD measurements.

ISBN: 049613924XSubjects--Topical Terms:

212478
Engineering, Environmental.

In situ stabilization of persistent organic contaminants in marine sediments.
LDR:03401nmm _2200313 _450 001 167298
005 20061005085845.5
008 090528s2005 eng d
020 $a 049613924X
035 $a 00197914
040 $a UnM $c UnM
100 0 $a Zimmerman, John Richard. $3 237444
245 1 0 $a In situ stabilization of persistent organic contaminants in marine sediments.
300 $a 148 p.
500 $a Adviser: Richard G. Luthy.
500 $a Source: Dissertation Abstracts International, Volume: 65-11, Section: B, page: 5968.
502 $a Thesis (Ph.D.)--Stanford University, 2005.
520 # $a In the first study, PCB- and PAH-contaminated sediment from Hunters Point was contacted with coke and activated carbon for periods of one and six months. Sediment treated with 3.4% by weight activated carbon showed reductions in aqueous equilibrium PCB and PAH concentrations and uptake by semi-permeable membrane devices, and reductions in PCB flux to overlying water in quiescent systems. Adding coke to contaminated sediment did not significantly decrease aqueous equilibrium PCB concentrations nor PCB or PAH availability in SPMD measurements.
520 # $a The results from this investigation demonstrate that adding activated carbon to marine sediment can be an effective in situ stabilization method to reduce hydrophobic organic contaminant availability to surrounding water and biota.
520 # $a The second study showed that increasing the activated carbon dose reduced PCB and PAH aqueous concentrations, PCB and PAH uptake by semi-permeable membrane devices and quiescent flux of PCBs to overlying water. Decreasing activated carbon particle size decreased aqueous PCB concentrations. Collaborators at the Environmental Research and Development Center (ERDC) in Vicksburg, MS found that increasing the carbon dose increased the effectiveness in reducing PCB bioaccumulation.
520 # $a The third study investigated how mixing activated carbon into cohesive sediment may affect the stability of sediment in the intertidal zone at South Basin, adjacent to Hunters Point. The results indicated for these sediments that mixing 3.4% by weight activated carbon into sediment does not significantly affect the stability of surface sediments, as measured by sediment erosion rate and critical shear stress for incipient motion. Hydrodynamic modeling of South Basin showed that bottom shear stresses caused by large waves under high-wind storm conditions are sufficient to erode surface sediments only for short periods of time.
520 # $a This work addresses the addition of carbon sorbents to marine sediments to reduce the chemical and biological availability of persistent organic contaminants such as polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs). The sediment for all tests was obtained from the intertidal zone in South Basin, adjacent to the landfill at Hunters Point Naval Shipyard in San Francisco Bay, CA. Three major study activities were performed as part of the work reported here.
590 $a School code: 0212.
650 # 0 $a Engineering, Environmental. $3 212478
650 # 0 $a Environmental Sciences. $3 212393
690 $a 0768
690 $a 0775
710 0 # $a Stanford University. $3 212607
773 0 # $g 65-11B. $t Dissertation Abstracts International
790 $a 0212
790 1 0 $a Luthy, Richard G., $e advisor
791 $a Ph.D.
792 $a 2005
856 4 0 $u http://libsw.nuk.edu.tw:81/login?url=http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3153524 $z http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3153524