Fluorescing Layered Double Hydroxides as Tracer Materials for Particle Injection during Subsurface Water Remediation
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 monitor...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-09-01
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| Series: | ChemEngineering |
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| Online Access: | https://www.mdpi.com/2305-7084/4/3/53 |
| _version_ | 1797553602632351744 |
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| author | Karen Maria Dietmann Tobias Linke Markus Reischer Vicente Rives |
| author_facet | Karen Maria Dietmann Tobias Linke Markus Reischer Vicente Rives |
| author_sort | Karen Maria Dietmann |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-10T16:18:51Z |
| format | Article |
| id | doaj.art-a7749787ad1d4592b99dffa6b58f0532 |
| institution | Directory Open Access Journal |
| issn | 2305-7084 |
| language | English |
| last_indexed | 2024-03-10T16:18:51Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | ChemEngineering |
| spelling | doaj.art-a7749787ad1d4592b99dffa6b58f05322023-11-20T13:51:46ZengMDPI AGChemEngineering2305-70842020-09-01435310.3390/chemengineering4030053Fluorescing Layered Double Hydroxides as Tracer Materials for Particle Injection during Subsurface Water RemediationKaren Maria Dietmann0Tobias Linke1Markus Reischer2Vicente Rives3Grupo de Investigación Reconocido-Química del Estado Sólido, Materiales y Catálisis Heterogénea (GIR-QUESCAT), Departamento de Química Inorgánica, Universidad de Salamanca, 37008 Salamanca, SpainInstitute of Earth Sciences, Háskoli íslands, Sturlugata 7, 101 Reykjavík, IcelandNirás, Sortemosevej 19, 3450 Allrød, DenmarkGrupo de Investigación Reconocido-Química del Estado Sólido, Materiales y Catálisis Heterogénea (GIR-QUESCAT), Departamento de Química Inorgánica, Universidad de Salamanca, 37008 Salamanca, SpainNowadays, 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.https://www.mdpi.com/2305-7084/4/3/53LDHsfluorescent dyeOptical Image Profiler (OIP)in situ remediationchlorinated organic solvents |
| spellingShingle | Karen Maria Dietmann Tobias Linke Markus Reischer Vicente Rives Fluorescing Layered Double Hydroxides as Tracer Materials for Particle Injection during Subsurface Water Remediation ChemEngineering LDHs fluorescent dye Optical Image Profiler (OIP) in situ remediation chlorinated organic solvents |
| title | Fluorescing Layered Double Hydroxides as Tracer Materials for Particle Injection during Subsurface Water Remediation |
| title_full | Fluorescing Layered Double Hydroxides as Tracer Materials for Particle Injection during Subsurface Water Remediation |
| title_fullStr | Fluorescing Layered Double Hydroxides as Tracer Materials for Particle Injection during Subsurface Water Remediation |
| title_full_unstemmed | Fluorescing Layered Double Hydroxides as Tracer Materials for Particle Injection during Subsurface Water Remediation |
| title_short | Fluorescing Layered Double Hydroxides as Tracer Materials for Particle Injection during Subsurface Water Remediation |
| title_sort | fluorescing layered double hydroxides as tracer materials for particle injection during subsurface water remediation |
| topic | LDHs fluorescent dye Optical Image Profiler (OIP) in situ remediation chlorinated organic solvents |
| url | https://www.mdpi.com/2305-7084/4/3/53 |
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