A green method based on living macroalgae for the removal of rare-earth elements from contaminated waters

Pinto, João; Henriques, Bruno; Soares, J.C.; Costa, Marcelo; Dias, Mariana; Fabre, Elaine; Lopes, Cláudia B.; Vale, Carlos; Pinheiro-Torres, José; Pereira, Eduarda

doi:10.1016/j.jenvman.2020.110376

Cited by 52 publications

(21 citation statements)

References 43 publications

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“…The removal of REEs is strictly correlated to the physical, chemical, and biological characteristics of the algae. Namely, the algal cell wall is rich in functional groups, which contribute to the high-removal performances, as assessed for different microalgae such as Desmodesmus multivariabilis , Chlorella vulgaris , and Chlamydomonas reinhardii [ 25 ] as well as for macroalgae [ 26 , 27 ]. REEs after binding on the cell wall can be transported into cells by carrier proteins and stored in different cell compartments [ 24 ].…”

Section: Discussionmentioning

confidence: 99%

“…The different removal rates amongst the two strains, especially at pH 2.5, could also be ascribed to the different transportation systems activated by the microalgae. In general, the transport across the membrane is also affected by the physiochemical parameters (e.g., molecular size and polarity) [ 26 , 36 , 37 ]. Inside the cell, metal ions could accumulate in the vacuoles or be bound by specific molecules for storage or detoxification [ 27 , 36 , 38 ].…”

Section: Discussionmentioning

confidence: 99%

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Bioremoval of Yttrium (III), Cerium (III), Europium (III), and Terbium (III) from Single and Quaternary Aqueous Solutions Using the Extremophile Galdieria sulphuraria (Galdieriaceae, Rhodophyta)

Iovinella

Lombardo

Ciniglia

et al. 2022

Plants

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The lanthanides are among the rare earth elements (REEs), which are indispensable constituents of modern technologies and are often challenging to acquire from natural resources. The demand for REEs is so high that there is a clear need to develop efficient and environmentally-friendly recycling methods. In the present study, living cells of the extremophile Galdieria sulphuraria were used to remove four REEs, Yttrium, Cerium, Europium, and Terbium, from single- and quaternary-metal aqueous solutions. Two different strains, SAG 107.79 and ACUF 427, were exposed to solutions buffered at pH 2.5, 3.5, 4.5, and 5.5. Our data demonstrated that the removal performances were strain and pH dependent for all metal ions. At lower pH, ACUF 427 outperformed SAG 107.79 considerably. By increasing the pH of the solutions, there was a significant surge in the aqueous removal performance of both strains. The same trend was highlighted using quaternary-metal solutions, even if the quantities of metal removed were significantly lower. The present study provided the first insight into the comparative removal capacity of the Galdieria sulphuraria strains. The choice of the appropriate operational conditions such as the pH of the metal solutions is an essential step in developing efficient, rapid, and straightforward biological methods for recycling REEs.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Bioremoval of Yttrium (III), Cerium (III), Europium (III), and Terbium (III) from Single and Quaternary Aqueous Solutions Using the Extremophile Galdieria sulphuraria (Galdieriaceae, Rhodophyta)

Iovinella

Lombardo

Ciniglia

et al. 2022

Plants

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“…Recently, some contributions have focused on the removal of Y(III) ions from wastewater by biosorption to eliminate the risks to the human health. Pinto et al 31 evaluated that the biosorption of Y(III) ions by six living microalgae. They found that the adsorption capacity of the six living microalgae ranged from 0.2 mg/g to 1.05 mg/g, respectively.…”

Section: Introductionmentioning

confidence: 99%

Removal of yttrium from rare-earth wastewater by Serratia marcescens: biosorption optimization and mechanisms studies

Liang

Shen

2022

Sci Rep

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The discharge of yttrium containing wastewater is a potential risk to human health. Although biosorption is a promising method to remove yttrium from wastewater, whereas the application of it is limited due to the lack of efficient biosorbents. In this study, the removal of yttrium from wastewater using Serratia marcescens as a biosorbent was conducted. The effects of six parameters including pH (2–5.5), initial yttrium concentration (10–110 mg/L), biosorbent dosage (0.1–0.5 g/L), biosorption time (10–700 min), stirring speed (50–300 rpm) and temperature (20–60 °C) were evaluated. The main parameters were optimized using response surface methodology. The results showed that the adsorption capacity reached 123.65 mg/g at the optimized conditions. The biosorption mechanism was revealed based on a combined analysis using field emission transmission electron microscope-energy dispersion spectrum, Fourier transform infrared spectrophotometer, and X-ray photoelectron spectroscopy. These results revealed that the hydroxyl, carboxyl, and amino groups were the adsorption functional groups for yttrium ions. Biosorption of yttrium by S. marcescens is under the combination of ion exchange, electrostatic attraction and complexation. These findings indicated that S. marcescens can be used as an efficient biosorbent to remove yttrium from wastewater. In addition, its adsorption capacity can be further improved by the enhancement of adsorption functional groups on the surface through chemical modification.

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“…Com base neste trabalho, o grupo de investigação da UA tem vindo a desenvolver vários outros estudos dando ênfase ao uso das macroalgas, confirmando a sua capacidade e apetência para a remoção dos poluentes tóxicos convencionais, como o Cd, Cr, Cu, Hg, Ni e P [22,23], mas igualmente para a remoção de REE [24,25].…”

Section: Competição Ou Sinergia Entre Ree Na Sorção à Gracilaria Grac...unclassified

A Potencialidade das Macroalgas na Remoção de Elementos Terras Raras de Águas Contaminadas

Vale¹,

Pereira²,

Pinto³

et al. 2021

BSPQuimica

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A green method based on living macroalgae for the removal of rare-earth elements from contaminated waters

Cited by 52 publications

References 43 publications

Bioremoval of Yttrium (III), Cerium (III), Europium (III), and Terbium (III) from Single and Quaternary Aqueous Solutions Using the Extremophile Galdieria sulphuraria (Galdieriaceae, Rhodophyta)

Bioremoval of Yttrium (III), Cerium (III), Europium (III), and Terbium (III) from Single and Quaternary Aqueous Solutions Using the Extremophile Galdieria sulphuraria (Galdieriaceae, Rhodophyta)

Removal of yttrium from rare-earth wastewater by Serratia marcescens: biosorption optimization and mechanisms studies

A Potencialidade das Macroalgas na Remoção de Elementos Terras Raras de Águas Contaminadas

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