OHMI Pima County

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Mots-clés	HYPERACCUMULATION

Porteur	Session	Titre	Mots-clés	Résumé
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Raina Maier	2022	Identifying drought adapted, native metal hyperaccumulating plants, and optimizing their phytoextraction potential in the Santa Cruz River Valley region.	PHYTOEXTRACTION PHYTOMINING PHYTOREMEDIATION HYPERACCUMULATION XRF ANALYSIS ECOCATALYSTS HEAVY METALS GREEN CHEMISTRY	Southeastern Arizona, including the upper valley of the Santa Cruz River, has one of the most diverse mining localities in the state. Mine wastes at many legacy mine sites in this region are sources and sinks of toxic heavy metals and they directly cause the ecological, economic, and social damage. A new, transformative strategy via interdisciplinary collaborative efforts is urgently needed to drive a wedge between an unsafe and altered environment and the natural ecosystem including its native inhabitants. We propose a series of field surveys and greenhouse experiments, to perform screening of elemental concentration of plants growing naturally on legacy mine sites across the Southeastern Arizona. By identifying native plants that accumulate high concentrations of metals into their leaves, we will not only be able to accelerate the development of “green” remediation techniques at the impacted lands across Santa Cruz River valley, but also greatly contribute to our ongoing efforts towards developing a new generation of “eco”-catalysts – so far not addressed in the Santa Cruz Valley region – by returning the extracted heavy metals to supply chain. Further, we see this research as the initial step to create the socio-ecological infrastructure in the upper valley of the Santa Cruz River region. We anticipate that in longer time perspective our findings and contribution to development of novel technologies will stimulate local communities on an economic level, by creating new job opportunities in plant-based technological operations towards overall landscape enhancement.		Afficher

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