A perspective on developing solid-phase extraction technologies for industrial-scale critical materials recovery

Brewer, Aaron; Florek, Justyna; Kleitz, Freddy

doi:10.1039/d2gc00347c

Cited by 33 publications

(22 citation statements)

References 90 publications

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“…Yield: 3.83 g (48%); mp 72−74 °C; Raman (80 mW, in cm −1 ) ν: 3083 (16), 2983 (26), 2937 (52), 2929 (53), 2873 (18), 1598 (100), 1570 (13), 1527 (15), 1494 (20), 1450 (23), 1427 (14), 1415 (13), 1402 (19), 1369 (21), 1344 (21), 1313 (14), 1284 (13), 1178 (13), 1095 (25), 1053 (24), 837 (17), 671 (22), 73 (56); IR (ATR, in cm −1 ) ν: 2980 (vw), 2933 (vw), 2877 (vw), 1597 (vw), 1587 (vw), 1562 (w), 1520 (w), 1493 (m), 1468 (w), 1450 (vw), 1414 (w), 1387 (w), 1375 (w), 1336 (w), 1282 (vw), 1269 (vw), 1242 (vw), 1178 (w), 1153 (m), 1101 (w), 1053 (vw), 978 (vs), 937 (w), 899 (w), 887 (w), 850 (vw), 829 (m), 775 (m), 748 (m), 704 (vw), 669 (m), 646 (w), 629 (vw), 607 (w), 575 (s), 530 (w), 519 (w), 503 (w), 422 (w); 1 H NMR (CDCl 3 , 300 K, in ppm): δ 1.28 (6H, d, 3 J HH = 6.2 Hz, H6a), 1.40 (6H, d, 3 J HH = 6.1 Hz, H6b), 2.27 (3H, d, 4 J HP = 0.7 Hz, H4), 4.62 (2H, d sept, 3 J HP = 7.7 Hz, 3 J HH = 6.3 Hz, H5), 7.39 (2H, md, 3 J HH = 9.0 Hz, H9/H10), 7.77 (2H, md, 3 J HH = 9.0 Hz, H9/ H10); 13 4.8. General Procedure for the Syntheses of Lanthanum(III), Europium(III), and Ytterbium(III) Complexes.…”

Section: Synthesis Of Diisopropyl(5-hydroxy-3-methyl-1-phenyl-1hpyraz...mentioning

confidence: 99%

Highly Tunable 4-Phosphoryl Pyrazolone Receptors for Selective Rare-Earth Separation

et al. 2023

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Highly selective rare-earth separation has become increasingly important due to the indispensable role of these elements in various cutting-edge technologies including clean energy. However, the similar physicochemical properties of rare-earth elements (REEs) render their separation very challenging, and the development of new selective receptors for these elements is potentially of very considerable economic and environmental importance. Herein, we report the development of a series of 4-phosphoryl pyrazolone receptors for the selective separation of trivalent lanthanum, europium, and ytterbium as the representatives of light, middle, and heavy REEs, respectively. X-ray crystallography studies were employed to obtain solid-state structures across 11 of the resulting complexes, allowing comparative structure–function relationships to be probed, including the effect of lanthanide contraction that occurs along the series from lanthanum to europium to ytterbium and which potentially provides a basis for REE ion separation. In addition, the influence of ligand structure and lipophilicity on lanthanide binding and selectivity was systematically investigated via n-octanol/water distribution and liquid–liquid extraction (LLE) studies. Corresponding stoichiometry relationships between solid and solution states were well established using slope analyses. The results provide new insights into some fundamental lanthanide coordination chemistry from a separation perspective and establish 4-phosphoryl pyrazolone derivatives as potential practical extraction reagents for the selective separation of REEs in the future.

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Section: Synthesis Of Diisopropyl(5-hydroxy-3-methyl-1-phenyl-1hpyraz...mentioning

confidence: 99%

Highly Tunable 4-Phosphoryl Pyrazolone Receptors for Selective Rare-Earth Separation

et al. 2023

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“…Organic acids were the main class of compounds identified in the The proposed process for the recovery of a phenolic compound-rich extract from spent fermentation broth uses the SPE technique, which is widely used in analytical chemistry for sample preparation [29,30]. SPE industrial applications have been limited to small scale production of particularly high-purity products or to extraordinarily difficult separations [31], despite this being a potentially cost-effective system, since the solid adsorbents tend to be highly reusable, maintaining their function over multiple adsorption/desorption cycles [32]. Previously, SPE was intended for industrial-scale applications under batch mode in a mixed container [33], but column adsorption, as proposed in the present work, has been shown to be more feasible [34].…”

Section: Process Assessmentmentioning

confidence: 99%

Valorization of Spent Sugarcane Fermentation Broth as a Source of Phenolic Compounds

et al. 2022

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A methodology based on a solid phase extraction (SPE) was optimized for the recovery of phenolic compounds from the spent fermentation broth generated from Biofene® (trans-β-farnesene) production. For this purpose, two resins (XAD-2 and HP-20) and three desorption solutions (water, 50/50 ethanol/water, and ethanol) were tested. The most efficient resin revealed to be the HP-20, using ethanol as desorption solution, reaching an overall total phenolic compound recovery of ca. 80% when 6 BV (bed volume) of both feed and ethanol were applied. The optimization of the resin’s process cycle pointed to 15 BV feed to be treated per cycle and using the same volume of ethanol in the desorption step, with no need for an extra resin regeneration step, stably yielding 48% total phenolic compound recovery from the spent broth for at least 4 cycles, translating into 60 BV of feed being treated per BV of resin, and with the resin being still perfectly active. The extract was characterized using LC−ESI−UHR−QqTOF−MS, and a total of 82 and 15 compounds were identified, in negative and positive ionization modes, respectively. Organic acids were the main class of compounds identified in the phenolic-rich extract, followed by phenolic compounds, saccharides, peptides or amino acids and vitamins. Additionally, the extract revealed a significant antioxidant capacity (914.1 ± 51.6 and 2764.5 ± 142.8 µmol Trolox equivalents/g-dw, respectively, with ABTS and ORAC methodologies), which might be interesting for a wide variety of applications.

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“…Therefore, it is necessary to make efforts for improving the extraction procedures to achieve economic feasibility. 16 Several processes can be used for mining these bitterns and recovering valuable minerals. These processes can be classified, for example, depending on the type of driving force used: pressure-driven (e.g., reverse osmosis), thermally driven (e.g., evaporation), electrochemical potential-driven (e.g., electrodialy-sis), and physico-chemically driven (e.g., sorption and ion exchange).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is necessary to make efforts for improving the extraction procedures to achieve economic feasibility. 16…”

Section: Introductionmentioning

confidence: 99%

Polymeric and inorganic sorbents as a green option to recover critical raw materials at trace levels from sea saltwork bitterns

et al. 2023

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A perspective on developing solid-phase extraction technologies for industrial-scale critical materials recovery

Abstract: Critical materials (CMs) are a group of elements that have been determined to be important for the modern economy, but which may face current or potential supply limitations. Some examples...

Cited by 33 publications

References 90 publications

Highly Tunable 4-Phosphoryl Pyrazolone Receptors for Selective Rare-Earth Separation

Highly Tunable 4-Phosphoryl Pyrazolone Receptors for Selective Rare-Earth Separation

Valorization of Spent Sugarcane Fermentation Broth as a Source of Phenolic Compounds

Polymeric and inorganic sorbents as a green option to recover critical raw materials at trace levels from sea saltwork bitterns

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