XRD-thermal combined analyses: an approach to evaluate the potential of phytoremediation, phytomining, and biochar production
Open accessAbstract
plants and rhizospheres were harvested from abandoned Zn-Pb mine areas of southwest Sardinia (Italy). Thermogravimetry and Differential Thermal analyses were performed to evaluate the temperatures at which significant reactions occur. X-ray Diffraction (XRD) analysis was carried out on raw samples and on samples heated ex-situ (by a conventional diffractometer) or in-situ (by synchrotron-based diffraction). Raw samples mainly consist of quartz, phyllosilicates, and feldspars with minor amounts of sulfides, sulfates, and Fe, Pb, and Zn carbonates, concentrated in the rhizosphere. After heating, Zn and Fe oxides and willemite are observed in internal roots and stems, revealing the presence of these metals in the plant tissues. In-situ heating was less effective than ex-situ in revealing minor phases in organic samples, probably because the scarcity of oxygen within the sample holder did not allow the degradation of organic compounds and the oxidation of sulfides, resulting in a low quality XRD signal even if obtained with the high resolution ensured by a synchrotron light source. This method can be applied to plants from polluted sites for metal exploitation, and/or to biomasses from unpolluted sites for biochar production, since both applications take advantage of the knowledge of the minerals formed after heating.
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Presence of cellulose or similar organic compounds is highlighted by increase of background level and a large hump between 11 and 13°.
“The presence of cellulose or other similar organic compounds is highlighted by the increase of the background level and by a large hump between 11 and 13 ◦ (Fancello et al., 2019).”
From Effect of Pyrolysis Temperature on PhysicoChemical Properties and Acoustic-Based Amination of Biochar for Efficient CO2 Adsorption (2020) · cites this paper as Fancello et al., 2019
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References 94 · Cited by 27
Research works printed but not linked: 5
- [5]Ghosh M. Singh S.P. Asian Journal on Energy and Environment A Review on Phytoremediation of Heavy Metals and Utilization of It’s by Products Asian J. Energy Environ. 2005 6 214 231
- [21]Boi M.E. Medas D. Bacchetta G. Cappai G. Carlomagno I. Casu M.A. Gianoncelli A. Meneghini C. Piredda M. Podda F. Biomineral formation in the soil-plant system in metal-extreme environments: An investigation of Helichrysum microphyllum Cambess. subsp tyrrhenicum in press
- [56]Lynch J.M. de Leij F. Rhizosphere eLS John Wiley & Sons, Ltd. Chichester, UK 2012
- [59]Mishra A. Mishra S.P. Arshi A. Agarwal A. Dwivedi S.K. Plant-Microbe Interactions for Bioremediation and Phytoremediation of Environmental Pollutants and Agro-ecosystem Development BT—Bioremediation of Industrial Waste for Environmental Safety: Volume II: Biological Agents and Methods for Industrial Waste M Bharagava R.N. Saxena G. Springer Singapore 2019 415 436 978-981-13-3426-9
- [98]Xu X. Cao X. Zhao L. Comparison of rice husk- and dairy manure-derived biochars for simultaneously removing heavy metals from aqueous solutions: Role of mineral components in biochars Chemosphere 2013 92 955 961 10.1016/j.chemosphere.2013.03.009 23591132 · DOI
- Authors
- Fancello, D., Scalco, J., Medas, D., Rodeghero, E., Martucci, A., Meneghini, C., & De Giudici, G.
- Affiliations
- University of Cagliari (IT)
- University of Ferrara (IT)
- Roma Tre University (IT)
- Department of Chemical and Geological Sciences, University of Cagliari, Cittadella Universitaria, 09042 Monserrato, Italy
- Corresponding author
- Medas, Daniela
- Venue
- International Journal of Environmental Research and Public Health
- Publisher
- MDPI AG
- Published
- 2019-06-04
- Volume
- 16
- Issue
- 11
- Pages
- 1976
- ISSN
- 1660-4601 (ISSN-L)
- PMC
- PMC6603955
- OpenAlex
- W2948930391
- Cited by
- 27
- References
- 94
- Citations by year
- 2026: 1 · 2025: 7 · 2024: 4 · 2023: 6 · 2022: 2 · 2021: 4 · 2020: 2 · 2019: 1
- FWCI
- 0.67
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- International Journal of Environmental Research and Public Health (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- RePEc: Research Papers in Economics (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
- UNICA IRIS Institutional Research Information System (University of Cagliari) (submittedVersion, other-oa)
- Iris (Roma Tre University) (submittedVersion)
- Institutional Research Information System University of Ferrara (University of Ferrara) (submittedVersion, cc-by)
- Funders
- Regione Autonoma della Sardegna and Fondazione Banco di Sardegna (F72F16003080002)
- Seventh Framework Programme (72094 SUPREME)
- Regione Autonoma della Sardegna (E58C16000080003 CESA)
- Ministero dell’Istruzione, dell’Università e della Ricerca (ARTICOLO 1, COMMI 314−337 LEGGE 232/2016)
- Topics
- Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
- Physical Sciences › Environmental Science › Water Science and Technology › Environmental and Analytical Chemistry Studies
- Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Coal and Its By-products
- Keywords
- phytoremediation, phytomining, biochar production, mine tailings, zinc, lead, rhizosphere, synchrotron X-ray diffraction, in situ heating, thermogravimetric analysis, differential thermal analysis, metal oxides, willemite, sulfide oxidation, plant biomass, abandoned mines, Sardinia
- MeSH terms
- Biodegradation, Environmental, Charcoal, Environmental Pollutants, Italy, Metals, Minerals, Plants, Soil Pollutants, Plant Roots, Plant Physiological Phenomena, Metals, Heavy, Rhizosphere
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