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You searched for +publisher:"University of Southern California" +contributor:("Pamukcu, Sibel"). Showing records 1 – 2 of 2 total matches.

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University of Southern California

1. Haroun, Muhammad. Feasibility of in-situ removal of heavy metals by electroremediation of offshore muds.

Degree: PhD, Environmental Engineering, 2009, University of Southern California

The present experimental work is directed towards investigation of the electokinetically-enhanced transport of soil contaminants (specifically heavy metals) in clay media and offshore muds.; The electrokinetic process is an emerging technology for in-situ soil decontamination, in which chemical species, both ionic and nonionic, are transported to electrode sites in soil. Electrokinetics refers to movement of water, ions and charged particles relative to one another under the action of an applied direct current electric field. In a porous compact matrix of surface-charged particles such as soil, the pore fluid containing ions are made to flow to the collection sites under the applied electric field (Pamukcu et al., 1993).; Remediation of anthropogenically contaminated clay-soil media were conducted by Dr. Pamukcu at Lehigh University. Experiments of high concentrations of heavy metals in clay-soil media were conducted at the University of Southern California by the writer. Water containing acids were used for pH control.; The EK tests were performed for 24 hrs, and the initial and final concentrations were analyzed using an ICP-MS equipment. The removal efficiency, initial and final pH of slurry at 3 positions was recorded.; The effectiveness of the process demonstrated that up to 99% of initial concentrations of metals can be removed from soil. In this process, the pH and contaminant type was found to influence the removal rather than the electroosmotic flow. In the absence of pH control mechanisms, the basic conditions developed at the cathode, causing most of the metals to precipitate near the cathode as carbonates and hydroxides. pH adjustment at the cathode appeared to minimize such precipitation and to enhance the removal of some heavy metals.; Applicability of this electrokinetic technology in remediating offshore muds from heavy metals was not evaluated to date. Tests were made using 22 different offshore mud samples from different locations in Abu Dhabi, U.A.E., contaminated with 29 different heavy metals. The experimental work was performed by the writer at the newly-established Electrokinetic laboratories at the Petroleum Institute in Abu Dhabi, U.A.E. In the process it was determined that D.C. current can be used to decontaminate the offshore muds from heavy metals. Advisors/Committee Members: Meshkati, NajmedinChilingar, George (Committee Chair), Ershaghi, Iraj (Committee Member), Pamukcu, Sibel (Committee Member).

Subjects/Keywords: electroremediation; offshore; offshore muds; electrokientics; heavy metals; decontamination; Abu Dhabi; in-situ; in-situ decontamination; in-situ electroremediation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Haroun, M. (2009). Feasibility of in-situ removal of heavy metals by electroremediation of offshore muds. (Doctoral Dissertation). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/265684/rec/2783

Chicago Manual of Style (16th Edition):

Haroun, Muhammad. “Feasibility of in-situ removal of heavy metals by electroremediation of offshore muds.” 2009. Doctoral Dissertation, University of Southern California. Accessed June 16, 2019. http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/265684/rec/2783.

MLA Handbook (7th Edition):

Haroun, Muhammad. “Feasibility of in-situ removal of heavy metals by electroremediation of offshore muds.” 2009. Web. 16 Jun 2019.

Vancouver:

Haroun M. Feasibility of in-situ removal of heavy metals by electroremediation of offshore muds. [Internet] [Doctoral dissertation]. University of Southern California; 2009. [cited 2019 Jun 16]. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/265684/rec/2783.

Council of Science Editors:

Haroun M. Feasibility of in-situ removal of heavy metals by electroremediation of offshore muds. [Doctoral Dissertation]. University of Southern California; 2009. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/265684/rec/2783


University of Southern California

2. Shin, Sanghee. Electroremediation of offshore muds contaminated with heavy metals.

Degree: PhD, Environmental Engineering, 2011, University of Southern California

The electroremediation process requires much needed research work to be optimized for up-scaling and improving economic efficiency. This is particularly true when applying the technology to highly heterogeneous and complex mineralogy materials such as offshore sediments and muds. Laboratory batch tests were performed on field retrieved specimens of contaminated offshore muds near Abu Dhabi Ports of United Arab Emirates. The influence of various process parameters that determine the optimum operating conditions and sustainable enhancement of electrokinetic remediation was investigated. Excellent results of decontamination of seven heavy metals were achieved. ❧ The removal of heavy metals by management of the in-situ chlorine gas (Cl₂) production was also investigated. The tests showed a high removal efficiency of heavy metals at the cathode end of cores after 24 hours of EK application in the presence of chlorine gas. In the initial tests, high electrokinetic flow potential was achieved; however, high levels of chlorine gas were produced in high-salinity environments. This was improved by controlling and maintaining a certain fraction of the chlorine gas (Cl₂) in place. ❧ The pH was controlled by the identified optimum fraction of chlorine gas maintained in-situ and transported from the anode to cathode. The transports of seven heavy metals were evaluated in this study. The chlorine gas can have two impacts on the transport of metals in the system. One is to oxidize the metal ions to a higher oxidation state and the second is to form chloride complexes, which will have higher mobility in the system. Determination of oxidation state and the subsequent metal chloride complex are left for future research. ❧ Electrokinetics is also proposed to improve acidizing operations, i.e., increase the penetration distance. Aqueous solutions of hydrochloric acid (usually 15%) are pumped into the carbonate formations to enlarge the pores and pre-existing fractures. However, the penetration distance of acid is very short. By applying D.C. current, one can drive the acid for long distances into the formation being acidized. According to Professor Chilingar, this is a unique discovery which will lead to doubling the oil reserves in carbonate reservoirs (60 % of World oil reserves reside in carbonates). Advisors/Committee Members: Meshkati, NajmedinChilingar, George V. (Committee Chair), Pamukcu, Sibel (Committee Member), Haroun, Muhammad (Committee Member), Golomb, Solomon Wolf (Committee Member).

Subjects/Keywords: electrokinetics; electroremediation; heavy metals; nanotechnology; offshore muds; soil restoration

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Shin, S. (2011). Electroremediation of offshore muds contaminated with heavy metals. (Doctoral Dissertation). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/211111/rec/2283

Chicago Manual of Style (16th Edition):

Shin, Sanghee. “Electroremediation of offshore muds contaminated with heavy metals.” 2011. Doctoral Dissertation, University of Southern California. Accessed June 16, 2019. http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/211111/rec/2283.

MLA Handbook (7th Edition):

Shin, Sanghee. “Electroremediation of offshore muds contaminated with heavy metals.” 2011. Web. 16 Jun 2019.

Vancouver:

Shin S. Electroremediation of offshore muds contaminated with heavy metals. [Internet] [Doctoral dissertation]. University of Southern California; 2011. [cited 2019 Jun 16]. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/211111/rec/2283.

Council of Science Editors:

Shin S. Electroremediation of offshore muds contaminated with heavy metals. [Doctoral Dissertation]. University of Southern California; 2011. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/211111/rec/2283

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