Rights statement: This is the author’s version of a work that was accepted for publication in Fuel. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Fuel, 315, 2022 DOI: 10.1016/j.fuel.2022.123224
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Testing sorption of uranium from seawater on waste biomass
T2 - A feasibility study
AU - McGowan, S.
AU - Zhang, H.
AU - Degueldre, C.
N1 - This is the author’s version of a work that was accepted for publication in Fuel. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Fuel, 315, 2022 DOI: 10.1016/j.fuel.2022.123224
PY - 2022/5/1
Y1 - 2022/5/1
N2 - The extraction of uranium from seawater has been successfully performed in batch mode on 15 selected biomaterials, including fruit, green vegetable and tuber samples. Theses biomaterial samples were contacted in static batches with Irish seawater (2.8 ppb U) for periods of 1–2 months. After sorption, both supernatants and HNO3 digests from the sorbed biomass were analysed by inductively coupled plasma mass spectroscopy (ICP-MS) for uranium. Sorption of uranium from seawater onto the following materials revealed loadings (µg kg−1) increases from 10 to 20 for diced potato (Solanum tuberosum), Sultanas grape (Vitis vinifera), Brussels sprouts (Brassica oleracea), and sweet potato (Ipomoea batatas), to 200–300 for skin of nectarine (Prunus Persica), of orange (Citrus Sinensis) and of potato (Solanum tuberosum). The fraction of sorbed uranium reached 92% to 98% for peanut shell, orange skin, Brussels sprouts, garlic, grape pulp, grape skin, and Sultanas grape. Consequently the Kd values were of the order of 50 to 200 mL g−1 for mange tout (Pisum sativum), sweet potato (Ipomoea batatas) whole, potato (Solanum tuberosum) whole, Brussels sprouts (Brassica oleracea) and nectarine (Prunus Persica) skin, of 200 to 1000 mL g−1 for grape (Vitis vitaceae) pulp, Sultanas (Vitis vinifera) grape, peanut (Arachis hypogaea) shell, kale (Brassica oleriaceae), lemon skin and grape (Vitis vinifera) skin, and finally of 1000–2000 mL g−1 for potato (Solanum tuberosum) skin, orange (Citrus Sinensis) skin and garlic (Allium sativum). Polyphenols are expected to increase sorption. The plot of Kd with polyphenol concentration displays a positive correlation. Increases in sorption of may also be due to U(VI) reduction in U(IV) by antioxidants reported on these biomaterials and by colloidal aggregation, suggesting irreversible sorption. This screening study aimed to select specific bio-waste material absorbents to be tested in detail in a future study, prior tests at the pilot scale.
AB - The extraction of uranium from seawater has been successfully performed in batch mode on 15 selected biomaterials, including fruit, green vegetable and tuber samples. Theses biomaterial samples were contacted in static batches with Irish seawater (2.8 ppb U) for periods of 1–2 months. After sorption, both supernatants and HNO3 digests from the sorbed biomass were analysed by inductively coupled plasma mass spectroscopy (ICP-MS) for uranium. Sorption of uranium from seawater onto the following materials revealed loadings (µg kg−1) increases from 10 to 20 for diced potato (Solanum tuberosum), Sultanas grape (Vitis vinifera), Brussels sprouts (Brassica oleracea), and sweet potato (Ipomoea batatas), to 200–300 for skin of nectarine (Prunus Persica), of orange (Citrus Sinensis) and of potato (Solanum tuberosum). The fraction of sorbed uranium reached 92% to 98% for peanut shell, orange skin, Brussels sprouts, garlic, grape pulp, grape skin, and Sultanas grape. Consequently the Kd values were of the order of 50 to 200 mL g−1 for mange tout (Pisum sativum), sweet potato (Ipomoea batatas) whole, potato (Solanum tuberosum) whole, Brussels sprouts (Brassica oleracea) and nectarine (Prunus Persica) skin, of 200 to 1000 mL g−1 for grape (Vitis vitaceae) pulp, Sultanas (Vitis vinifera) grape, peanut (Arachis hypogaea) shell, kale (Brassica oleriaceae), lemon skin and grape (Vitis vinifera) skin, and finally of 1000–2000 mL g−1 for potato (Solanum tuberosum) skin, orange (Citrus Sinensis) skin and garlic (Allium sativum). Polyphenols are expected to increase sorption. The plot of Kd with polyphenol concentration displays a positive correlation. Increases in sorption of may also be due to U(VI) reduction in U(IV) by antioxidants reported on these biomaterials and by colloidal aggregation, suggesting irreversible sorption. This screening study aimed to select specific bio-waste material absorbents to be tested in detail in a future study, prior tests at the pilot scale.
KW - Biomass
KW - Extraction
KW - Seawater
KW - Sorption
KW - Uranium
KW - Citrus fruits
KW - Inductively coupled plasma
KW - Inductively coupled plasma mass spectrometry
KW - Mass spectrometers
KW - Oilseeds
KW - Sorbents
KW - Brassica oleracea
KW - Brussels
KW - Citrus sinensis
KW - Feasibility studies
KW - Polyphenols
KW - Prunus persica
KW - Solanum tuberosum
KW - Sweet potato
KW - Vitis vinifera
KW - Waste biomass
U2 - 10.1016/j.fuel.2022.123224
DO - 10.1016/j.fuel.2022.123224
M3 - Journal article
VL - 315
JO - Fuel
JF - Fuel
SN - 0016-2361
M1 - 123224
ER -