Improvement of Arsenic Phytoextraction Using Indigenous Bacteria and Mobilizing Agents
Among inorganic contaminants, arsenic (As) is known for its toxicity and the risks to the environment and human health that could derive from its presence. Phytoremediation represents an effective strategy for the removal of arsenic from contaminated soil, provided that suitable plant species and ad...
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| Format: | Article |
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MDPI AG
2022-09-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/18/9059 |
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| author | Elisabetta Franchi Meri Barbafieri Gianniantonio Petruzzelli Sergio Ferro Marco Vocciante |
| author_facet | Elisabetta Franchi Meri Barbafieri Gianniantonio Petruzzelli Sergio Ferro Marco Vocciante |
| author_sort | Elisabetta Franchi |
| collection | DOAJ |
| description | Among inorganic contaminants, arsenic (As) is known for its toxicity and the risks to the environment and human health that could derive from its presence. Phytoremediation represents an effective strategy for the removal of arsenic from contaminated soil, provided that suitable plant species and adequate operational plans are exploited. With reference to a disused area located in Southern Italy which was the subject of a previous study, in this work, new strategies were investigated to further improve the effectiveness of a phytoremediation plan for the removal of arsenic. The usefulness of <i>Cannabis sativa</i> (hemp) and <i>Zea mays</i> (corn) was evaluated in this work by microcosm (300 g of mixed soil per test) and mesocosm (4 kg of mixed soil + 1 kg of inert gravel per test) experiments. The addition of arsenic-tolerant bacteria isolated from the rhizosphere of native herbaceous species grown in the contaminated soil was employed to promote plant growth, while different mixtures of mobilizing agents were tested to improve arsenic bioavailability. After the combined treatment, the arsenic content in the aerial parts of the plants increased by about 10 times in the case of corn (from 1.23 to 10.41 mg kg<sup>−1</sup>) and by about 8 times in the case of hemp (from 1.05 to 8.12 mg kg<sup>−1</sup>). |
| first_indexed | 2024-03-10T00:49:50Z |
| format | Article |
| id | doaj.art-48b509849679442d890798b05956dbc1 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T00:49:50Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-48b509849679442d890798b05956dbc12023-11-23T14:52:22ZengMDPI AGApplied Sciences2076-34172022-09-011218905910.3390/app12189059Improvement of Arsenic Phytoextraction Using Indigenous Bacteria and Mobilizing AgentsElisabetta Franchi0Meri Barbafieri1Gianniantonio Petruzzelli2Sergio Ferro3Marco Vocciante4Eni S.p.A, R&D Environmental & Biological Laboratories, Via Maritano 26, 20097 San Donato Milanese, ItalyInstitute of Research on Terrestrial Ecosystem, National Council of Research, Via Moruzzi 1, 56124 Pisa, ItalyInstitute of Research on Terrestrial Ecosystem, National Council of Research, Via Moruzzi 1, 56124 Pisa, ItalyEcas4 Australia Pty Ltd., Mile End South, SA 5031, AustraliaDepartment of Chemistry and Industrial Chemistry, University of Genova, Via Dodecaneso 31, 16146 Genova, ItalyAmong inorganic contaminants, arsenic (As) is known for its toxicity and the risks to the environment and human health that could derive from its presence. Phytoremediation represents an effective strategy for the removal of arsenic from contaminated soil, provided that suitable plant species and adequate operational plans are exploited. With reference to a disused area located in Southern Italy which was the subject of a previous study, in this work, new strategies were investigated to further improve the effectiveness of a phytoremediation plan for the removal of arsenic. The usefulness of <i>Cannabis sativa</i> (hemp) and <i>Zea mays</i> (corn) was evaluated in this work by microcosm (300 g of mixed soil per test) and mesocosm (4 kg of mixed soil + 1 kg of inert gravel per test) experiments. The addition of arsenic-tolerant bacteria isolated from the rhizosphere of native herbaceous species grown in the contaminated soil was employed to promote plant growth, while different mixtures of mobilizing agents were tested to improve arsenic bioavailability. After the combined treatment, the arsenic content in the aerial parts of the plants increased by about 10 times in the case of corn (from 1.23 to 10.41 mg kg<sup>−1</sup>) and by about 8 times in the case of hemp (from 1.05 to 8.12 mg kg<sup>−1</sup>).https://www.mdpi.com/2076-3417/12/18/9059arsenic pollutionascorbic acidmicrobial endophytesmesocosmsmicrocosmsphytoremediation |
| spellingShingle | Elisabetta Franchi Meri Barbafieri Gianniantonio Petruzzelli Sergio Ferro Marco Vocciante Improvement of Arsenic Phytoextraction Using Indigenous Bacteria and Mobilizing Agents Applied Sciences arsenic pollution ascorbic acid microbial endophytes mesocosms microcosms phytoremediation |
| title | Improvement of Arsenic Phytoextraction Using Indigenous Bacteria and Mobilizing Agents |
| title_full | Improvement of Arsenic Phytoextraction Using Indigenous Bacteria and Mobilizing Agents |
| title_fullStr | Improvement of Arsenic Phytoextraction Using Indigenous Bacteria and Mobilizing Agents |
| title_full_unstemmed | Improvement of Arsenic Phytoextraction Using Indigenous Bacteria and Mobilizing Agents |
| title_short | Improvement of Arsenic Phytoextraction Using Indigenous Bacteria and Mobilizing Agents |
| title_sort | improvement of arsenic phytoextraction using indigenous bacteria and mobilizing agents |
| topic | arsenic pollution ascorbic acid microbial endophytes mesocosms microcosms phytoremediation |
| url | https://www.mdpi.com/2076-3417/12/18/9059 |
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