A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Development of a water erosion tracer using industrial residue as a source of rare earth elements
Abstract This study was aimed at developing a water erosion tracer from montmorillonite (MMT) chemically modified with rare earth elements (REE) as chemical signatures to understand the landscape sediment mobilization dynamics. A new route of development involving the use of an industrial residue from the REE extraction process was evaluated for its REE incorporation efficiency in the clay mineral to enable further tracer applications on a field scale. This industrial residue-modified MMT tracer was compared with a reference tracer based on the chemical modification of MMT with a commercial REE precursor. These REE-modified MMT tracers were characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray fluorescence spectroscopies, inductively coupled plasma mass spectrometry (ICP-MS), X-ray diffractometry, scanning electron microscopy (SEM), and N2 physisorption measurements were performed to verify whether the MMT tracer modified with the industrial residue had the same chemical signature (REE) content and chemical stability as those of the commercial REE precursor-based tracer. Chemical stability tests under different pH conditions were carried out to evaluate possible REE content variations in the tracers, mainly over the targeted soil pH range (pH = 4.0–7.7). The clay modified with the industrial residue was further submitted to laboratory horizontal mobility tests using a soil flume. The chemical modification method was effective in producing a chemically stable MMT-based tracer that also displayed multi-chemical signature due to the use of the ClLa40-INB solution, which will potentially enhance the tracer detection in sediments. The mobility tests confirmed the suitability of the modified clay as a tracer.
Graphical abstract Display Omitted
Highlights Water erosion tracers were obtained using rare earth elements as chemical signatures. Low cost water erosion tracers were synthesized from an REE-rich industrial waste. The REE-tracers exhibited chemical and structural stability over targeted soil pH. Reduced tracer cost enables soil redistribution tracking applications on field scale.
Development of a water erosion tracer using industrial residue as a source of rare earth elements
Abstract This study was aimed at developing a water erosion tracer from montmorillonite (MMT) chemically modified with rare earth elements (REE) as chemical signatures to understand the landscape sediment mobilization dynamics. A new route of development involving the use of an industrial residue from the REE extraction process was evaluated for its REE incorporation efficiency in the clay mineral to enable further tracer applications on a field scale. This industrial residue-modified MMT tracer was compared with a reference tracer based on the chemical modification of MMT with a commercial REE precursor. These REE-modified MMT tracers were characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray fluorescence spectroscopies, inductively coupled plasma mass spectrometry (ICP-MS), X-ray diffractometry, scanning electron microscopy (SEM), and N2 physisorption measurements were performed to verify whether the MMT tracer modified with the industrial residue had the same chemical signature (REE) content and chemical stability as those of the commercial REE precursor-based tracer. Chemical stability tests under different pH conditions were carried out to evaluate possible REE content variations in the tracers, mainly over the targeted soil pH range (pH = 4.0–7.7). The clay modified with the industrial residue was further submitted to laboratory horizontal mobility tests using a soil flume. The chemical modification method was effective in producing a chemically stable MMT-based tracer that also displayed multi-chemical signature due to the use of the ClLa40-INB solution, which will potentially enhance the tracer detection in sediments. The mobility tests confirmed the suitability of the modified clay as a tracer.
Graphical abstract Display Omitted
Highlights Water erosion tracers were obtained using rare earth elements as chemical signatures. Low cost water erosion tracers were synthesized from an REE-rich industrial waste. The REE-tracers exhibited chemical and structural stability over targeted soil pH. Reduced tracer cost enables soil redistribution tracking applications on field scale.
Development of a water erosion tracer using industrial residue as a source of rare earth elements
Villela, João M. (author) / Nogueira, André E. (author) / Ribeiro, Caue (author) / Crestana, Silvio (author)
Applied Clay Science ; 195
2020-06-02
Article (Journal)
Electronic Resource
English
Tracing Soil Erosion from Watershed Using Rare Earth Elements
| Tema Archive | 2012
Tracing Soil Erosion from Slope Using Rare Earth Elements
| British Library Conference Proceedings | 2014
Tracing Discharges in Ocean Environments Using a Rare Earth Tracer
| British Library Conference Proceedings | 1997
Effect of rare earth elements on the erosion resistance of nitrided 40Cr steel
| British Library Online Contents | 2003
Clean Tech Needs Rare Earth Elements
| Online Contents | 2016