Next Article in Journal
Circumventing Unintended Impacts of Waste N95 Facemask Generated during the COVID-19 Pandemic: A Conceptual Design Approach
Previous Article in Journal
Experimental Methods for Measuring the Breakup Frequency in Turbulent Emulsification: A Critical Review
Article

Fluorescing Layered Double Hydroxides as Tracer Materials for Particle Injection during Subsurface Water Remediation

1
Grupo de Investigación Reconocido-Química del Estado Sólido, Materiales y Catálisis Heterogénea (GIR-QUESCAT), Departamento de Química Inorgánica, Universidad de Salamanca, 37008 Salamanca, Spain
2
Institute of Earth Sciences, Háskoli íslands, Sturlugata 7, 101 Reykjavík, Iceland
3
Nirás, Sortemosevej 19, 3450 Allrød, Denmark
4
Nano-Science Center, Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
*
Author to whom correspondence should be addressed.
ChemEngineering 2020, 4(3), 53; https://doi.org/10.3390/chemengineering4030053
Received: 13 July 2020 / Revised: 31 August 2020 / Accepted: 10 September 2020 / Published: 16 September 2020
Nowadays, the contamination of groundwater and soils by highly hazardous and toxic chlorinated solvents is a global issue. Over the past years, different remediation strategies have been developed, involving injection of reactive solutions and/or particles. However, a major difficulty is the monitoring of injected particles during the injection and after secondary mobilisation by groundwater flow. This study is focussed on the development of directly traceable particles by combining fluorescein with Layered Double Hydroxides (LDHs). We present here the facile and easily tuneable synthesis of fluorescing LDHs (Fluo-LDH) via co-precipitation under supersaturation conditions. Their ability to mimic particle sizes of previously studied reactive LDHs, which proved to be able to adsorb or degrade chlorinated organic solvents from aqueous solutions, was investigated as well. Tests using a novel Optical Image Profiler (OIP) confirmed that the fluorescent LDHs can be easily detected with this tool. Even LDHs with the lowest amount of fluorescent dye were detectable. Together with the use of an OIP, which is capable of exciting the fluorescent material and collecting real-time pictures, this can provide a new, efficient, and cost-effective method for in situ tracing of injected particles in the subsurface. View Full-Text
Keywords: LDHs; fluorescent dye; Optical Image Profiler (OIP); in situ remediation; chlorinated organic solvents LDHs; fluorescent dye; Optical Image Profiler (OIP); in situ remediation; chlorinated organic solvents
Show Figures

Figure 1

MDPI and ACS Style

Dietmann, K.M.; Linke, T.; Reischer, M.; Rives, V. Fluorescing Layered Double Hydroxides as Tracer Materials for Particle Injection during Subsurface Water Remediation. ChemEngineering 2020, 4, 53. https://doi.org/10.3390/chemengineering4030053

AMA Style

Dietmann KM, Linke T, Reischer M, Rives V. Fluorescing Layered Double Hydroxides as Tracer Materials for Particle Injection during Subsurface Water Remediation. ChemEngineering. 2020; 4(3):53. https://doi.org/10.3390/chemengineering4030053

Chicago/Turabian Style

Dietmann, Karen M., Tobias Linke, Markus Reischer, and Vicente Rives. 2020. "Fluorescing Layered Double Hydroxides as Tracer Materials for Particle Injection during Subsurface Water Remediation" ChemEngineering 4, no. 3: 53. https://doi.org/10.3390/chemengineering4030053

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop