Broholm, Mette Martina

Fjordbøge, Annika Sidelmann

Jakobsen, Mogens Havsteen

Uthuppu, Basil

Online Research Database In Technology

                       General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.  • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal   If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.     Downloaded from orbit.dtu.dk on: Nov 09, 2017Polymer stabilized nanogold as tracer to use in co-injection with nZVI during insituDNAPL remediationUthuppu, Basil; Fjordbøge, Annika Sidelmann; Broholm, Mette Martina; Jakobsen, Mogens HavsteenPublication date:2015Document VersionEarly version, also known as pre-printLink back to DTU OrbitCitation (APA):Uthuppu, B., Fjordbøge, A. S., Broholm, M. M., & Jakobsen, M. H. (2015). Polymer stabilized nanogold as tracerto use in co-injection with nZVI during insitu DNAPL remediation. Abstract from The International ChemicalCongress of Pacific Basin Societies 2015, Honolulu, United States.CONTROL ID: 2258969ABSTRACT_STATUS: SessionedPRESENTATION TYPE: Contributed Paper : OralSESSION TOPIC: (6) Agrochemistry, Environmental, and GeochemistrySESSION TITLE: Chemistry of Integrated Water Treatment Systems for Halogenated Organics and Long-livedRadionuclides (#454) [1A]SESSION TYPE: Oral - AMAbstract  TITLE: Polymer stabilized nanogold as tracer to use in co-injection with nZVI during in-situ DNAPL remediationAbstract Body: Nanoscale zero-valent iron (nZVI) particles have emerged as an efficient remediation agent foraqueous environmental pollutants such as chlorinated solvents and potentially dense non-aqueous phase liquids(DNAPLs) accumulated in the subsurface. For in-situ applications, the colloidal stability required for subsurfacemobility of nZVI is achieved by surface modification using different stabilizers. However, tracing the fate of the mobilenZVI in the subsurface is challenging and in most of the field tests, the reach of nZVI at the contaminated zone isdetermined by total iron concentration analysis that fails to distinguish between nZVI particles and dissolved iron (Fe2+) from corrosion. Efficient tracing methods are therefore of interest as the area of influence is important indetermining the effectiveness of the remediation process and assessing the dispersion of such reactive nanoparticlesin the environment.<br />To improve this tracing mechanism, the possibility of introducing nanogold (nAu) particles as a tracer with the reactivenZVI particles is investigated. Moreover, it is much easier to study mobility and partitioning properties of nAu thannZVI, coated with the same polymers, since the latter demands anaerobic conditions. Hence in this study, we use nAuparticles as a model system to study their behavior when coated with certain amphiphilic block co-polymers (PVA-COOH and PVP-VA) and also to investigate the fate of nanoparticles in porous media. The mobility, traceability,affinity towards PCE and TCE and spectrophotometric characterizations of nAu are studied in laboratory batch,column and 2D flow cell experiments.AUTHORS (LAST NAME, FIRST NAME): Uthuppu, Basil 1; Fjordbøge, Annika  Sidelmann2; Broholm, Mette   Martina2; Jakobsen, Mogens Havsteen1INSTITUTIONS (ALL): 1. Department of Micro- and Nanotechnology, Technical University of Denmark, Kongens Lyngby, Denmark.2. Department of Environmental Engineering, Technical University of Denmark, Kongens Lyngby, Denmark.(No Image Selected)(no table selected)PRESENTER: Basil UthuppuPRESENTER (E-MAIL ONLY): baut@nanotech.dtu.dkPresentation Type Detail: I will accept either presentation format: oral or poster.Invited Paper : Invited Paper Confirmation: Student Poster Competition: Visa: No

Polymer stabilized nanogold as tracer to use in co-injection with nZVI during insitu DNAPL remediation

http://orbit.dtu.dk/ws/files/123548108/submission_1.pdf

Polymer stabilized nanogold as tracer to use in co-injection with nZVI during insitu DNAPL remediation

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