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Zahariev F, Ash T, Karunaratne E, Stender E, Gordon MS, Windus TL, Pérez García M. Prediction of stability constants of metal-ligand complexes by machine learning for the design of ligands with optimal metal ion selectivity. J Chem Phys 2024; 160:042502. [PMID: 38284991 DOI: 10.1063/5.0176000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 12/06/2023] [Indexed: 01/30/2024] Open
Abstract
The new LOGKPREDICT program integrates HostDesigner molecular design software with the machine learning (ML) program Chemprop. By supplying HostDesigner with predicted log K values, LOGKPREDICT enhances the computer-aided molecular design process by ranking ligands directly by metal-ligand binding strength. Harnessing reliable experimental data from a historic National Institute of Standards and Technology (NIST) database and data from the International Union of Pure and Applied Chemistry (IUPAC), we train message passing neural net algorithms. The multi-metal NIST-based ML model has a root mean square error (RMSE) of 0.629 ± 0.044 (R2 of 0.960 ± 0.006), while two versions of lanthanide-only IUPAC-based ML models have, respectively, RMSE of 0.764 ± 0.073 (R2 of 0.976 ± 0.005) and 0.757 ± 0.071 (R2 of 0.959 ± 0.007). For relative log K predictions on an out-of-sample set of six ligands, demonstrating metal ion selectivity, the RMSE value reaches a commendably low 0.25. We showcase the use of LOGKPREDICT in identifying ligands with high selectivity for lanthanides in aqueous solutions, a finding supported by recent experimental evidence. We also predict new ligands yet to be verified experimentally. Therefore, our ML models implemented through LOGKPREDICT and interfaced with the ligand design software HostDesigner pave the way for designing new ligands with predetermined selectivity for competing metal ions in an aqueous solution.
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Affiliation(s)
- Federico Zahariev
- Ames National Laboratory, Ames, Iowa 50011, USA; Critical Materials Innovation Hub, Ames, Iowa 50011, USA; and Iowa State University, Ames, Iowa 50011, USA
| | - Tamalika Ash
- Ames National Laboratory, Ames, Iowa 50011, USA; Critical Materials Innovation Hub, Ames, Iowa 50011, USA; and Iowa State University, Ames, Iowa 50011, USA
| | - Erandika Karunaratne
- Ames National Laboratory, Ames, Iowa 50011, USA; Critical Materials Innovation Hub, Ames, Iowa 50011, USA; and Iowa State University, Ames, Iowa 50011, USA
| | - Erin Stender
- Ames National Laboratory, Ames, Iowa 50011, USA; Critical Materials Innovation Hub, Ames, Iowa 50011, USA; and Iowa State University, Ames, Iowa 50011, USA
| | - Mark S Gordon
- Ames National Laboratory, Ames, Iowa 50011, USA; Critical Materials Innovation Hub, Ames, Iowa 50011, USA; and Iowa State University, Ames, Iowa 50011, USA
| | - Theresa L Windus
- Ames National Laboratory, Ames, Iowa 50011, USA; Critical Materials Innovation Hub, Ames, Iowa 50011, USA; and Iowa State University, Ames, Iowa 50011, USA
| | - Marilú Pérez García
- Ames National Laboratory, Ames, Iowa 50011, USA; Critical Materials Innovation Hub, Ames, Iowa 50011, USA; and Iowa State University, Ames, Iowa 50011, USA
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Wang H, Chen Y, Wang L, Liu Q, Yang S, Wang C. Advancing herbal medicine: enhancing product quality and safety through robust quality control practices. Front Pharmacol 2023; 14:1265178. [PMID: 37818188 PMCID: PMC10561302 DOI: 10.3389/fphar.2023.1265178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Accepted: 09/15/2023] [Indexed: 10/12/2023] Open
Abstract
This manuscript provides an in-depth review of the significance of quality control in herbal medication products, focusing on its role in maintaining efficiency and safety. With a historical foundation in traditional medicine systems, herbal remedies have gained widespread popularity as natural alternatives to conventional treatments. However, the increasing demand for these products necessitates stringent quality control measures to ensure consistency and safety. This comprehensive review explores the importance of quality control methods in monitoring various aspects of herbal product development, manufacturing, and distribution. Emphasizing the need for standardized processes, the manuscript delves into the detection and prevention of contaminants, the authentication of herbal ingredients, and the adherence to regulatory standards. Additionally, it highlights the integration of traditional knowledge and modern scientific approaches in achieving optimal quality control outcomes. By emphasizing the role of quality control in herbal medicine, this manuscript contributes to promoting consumer trust, safeguarding public health, and fostering the responsible use of herbal medication products.
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Affiliation(s)
- Hongting Wang
- Anhui Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines in Southern Anhui, Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, School of Pharmacy, Wannan Medical College, Wuhu, China
| | | | | | | | | | - Cunqin Wang
- Anhui Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines in Southern Anhui, Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, School of Pharmacy, Wannan Medical College, Wuhu, China
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Dismantling of Printed Circuit Boards Enabling Electronic Components Sorting and Their Subsequent Treatment Open Improved Elemental Sustainability Opportunities. SUSTAINABILITY 2021. [DOI: 10.3390/su131810357] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This critical review focuses on advanced recycling strategies to enable or increase recovery of chemical elements present in waste printed circuit boards (WPCBs). Conventional recycling involves manual removal of high value electronic components (ECs), followed by raw crushing of WPCBs, to recover main elements (by weight or value). All other elements remain unrecovered and end up highly diluted in post-processing wastes or ashes. To retrieve these elements, it is necessary to enrich the waste streams, which requires a change of paradigm in WPCB treatment: the disassembly of WPCBs combined with the sorting of ECs. This allows ECs to be separated by composition and to drastically increase chemical element concentration, thus making their recovery economically viable. In this report, we critically review state-of-the-art processes that dismantle and sort ECs, including some unpublished foresight from our laboratory work, which could be implemented in a recycling plant. We then identify research, business opportunities and associated advanced retrieval methods for those elements that can therefore be recovered, such as refractory metals (Ta, Nb, W, Mo), gallium, or lanthanides, or those, such as the platinum group elements, that can be recovered in a more environmentally friendly way than pyrometallurgy. The recovery methods can be directly tuned and adapted to the corresponding stream.
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Špadina M, Dufrêche JF, Pellet-Rostaing S, Marčelja S, Zemb T. Molecular Forces in Liquid-Liquid Extraction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:10637-10656. [PMID: 34251218 DOI: 10.1021/acs.langmuir.1c00673] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The phase transfer of ions is driven by gradients of chemical potentials rather than concentrations alone (i.e., by both the molecular forces and entropy). Extraction is a combination of high-energy interactions that correspond to short-range forces in the first solvation shell such as ion pairing or complexation forces, with supramolecular and nanoscale organization. While the latter are similar to the long-range solvent-averaged interactions in the colloidal world, in solvent extraction they are associated with lower characteristic lengths of the nanometric domain. Modeling of such complex systems is especially complicated because the two domains are coupled, whereas the resulting free energy of extraction is around kBT to guarantee the reversibility of the practical process. Nevertheless, quantification is possible by considering a partitioning of space among the polar cores, interfacial film, and solvent. The resulting free energy of transfer can be rationalized by utilizing a combination of terms which represent strong complexation energies, counterbalanced by various entropic effects and the confinement of polar solutes in nanodomains dispersed in the diluent, together with interfacial extractant terms. We describe here this ienaics approach in the context of solvent extraction systems; it can also be applied to further complex ionic systems, such as membranes and biological interfaces.
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Affiliation(s)
- Mario Špadina
- Group for Computational Life Sciences, Rud̵er Bošković Institute, Division of Physical Chemistry, 10000 Zagreb, Croatia
- Faculty of Health Sciences, University of Ljubljana, 1000 Ljubljana, Slovenia
| | | | | | - Stjepan Marčelja
- Research School of Physics, The Australian National University, Canberra, Australia
| | - Thomas Zemb
- ICSM, CEA, CNRS, ENSCM, Université Montpellier, Marcoule, France
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Maurice AA, Theisen J, Rai V, Olivier F, El Maangar A, Duhamet J, Zemb T, Gabriel JP. First online X‐ray fluorescence characterization of liquid‐liquid extraction in microfluidics. NANO SELECT 2021. [DOI: 10.1002/nano.202100133] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Ange A. Maurice
- SCARCE Laboratory Energy Research Institute @ NTU (ERI@N) Nanyang Technology University Singapore
| | - Johannes Theisen
- ICSM CEA CNRS ENSCM Université de Montpellier Marcoule France
- CEA IRIG INAC MEM Université Grenoble Alpes Grenoble France
| | - Varun Rai
- SCARCE Laboratory Energy Research Institute @ NTU (ERI@N) Nanyang Technology University Singapore
| | - Fabien Olivier
- SCARCE Laboratory Energy Research Institute @ NTU (ERI@N) Nanyang Technology University Singapore
- CEA CNRS NIMBE LICSEN Université Paris‐Saclay Gif‐sur‐Yvette France
| | | | - Jean Duhamet
- CEA DES ISEC DMRC Université de Montpellier Marcoule France
| | - Thomas Zemb
- ICSM CEA CNRS ENSCM Université de Montpellier Marcoule France
| | - Jean‐Christophe P. Gabriel
- SCARCE Laboratory Energy Research Institute @ NTU (ERI@N) Nanyang Technology University Singapore
- CEA IRIG INAC MEM Université Grenoble Alpes Grenoble France
- CEA CNRS NIMBE LICSEN Université Paris‐Saclay Gif‐sur‐Yvette France
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Špadina M, Dourdain S, Rey J, Bohinc K, Pellet-Rostaing S, Dufrêche JF, Zemb T. How acidity rules synergism and antagonism in liquid–liquid extraction by lipophilic extractants—Part II: application of the ienaic modelling. SOLVENT EXTRACTION AND ION EXCHANGE 2021. [DOI: 10.1080/07366299.2021.1899614] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- M. Špadina
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France
- Faculty of Health Sciences, University of Ljubljana, Ljubljana, Slovenia
| | - S. Dourdain
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France
| | - J. Rey
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France
| | - K. Bohinc
- Faculty of Health Sciences, University of Ljubljana, Ljubljana, Slovenia
| | | | | | - T. Zemb
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France
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Nelson GL, Lackey HE, Bello JM, Felmy HM, Bryan HB, Lamadie F, Bryan SA, Lines AM. Enabling Microscale Processing: Combined Raman and Absorbance Spectroscopy for Microfluidic On-Line Monitoring. Anal Chem 2021; 93:1643-1651. [PMID: 33337856 DOI: 10.1021/acs.analchem.0c04225] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Microfluidics have many potential applications including characterization of chemical processes on a reduced scale, spanning the study of reaction kinetics using on-chip liquid-liquid extractions, sample pretreatment to simplify off-chip analysis, and for portable spectroscopic analyses. The use of in situ characterization of process streams from laboratory-scale and microscale experiments on the same chemical system can provide comprehensive understanding and in-depth analysis of any similarities or differences between process conditions at different scales. A well-characterized extraction of Nd(NO3)3 from an aqueous phase of varying NO3- (aq) concentration with tributyl phosphate (TBP) in dodecane was the focus of this microscale study and was compared to an earlier laboratory-scale study utilizing counter current extraction equipment. Here, we verify that this same extraction process can be followed on the microscale using spectroscopic methods adapted for microfluidic measurement. Concentration of Nd (based on UV-vis) and nitrate (based on Raman) was chemometrically measured during the flow experiment, and resulting data were used to determine the distribution ratio for Nd. Extraction distributions measured on the microscale were compared favorably with those determined on the laboratory scale in the earlier study. Both micro-Raman and micro-UV-vis spectroscopy can be used to determine fundamental parameters with significantly reduced sample size as compared to traditional laboratory-scale approaches. This leads naturally to time, cost, and waste reductions.
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Affiliation(s)
- Gilbert L Nelson
- Department of Chemistry, College of Idaho, 2112 Cleveland Blvd, Caldwell, Idaho 83605, United States
| | - Hope E Lackey
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99352, United States
| | - Job M Bello
- Spectra Solutions Incorporated, 1502 Providence Highway, Norwood, Massachusetts 02062-4643, United States
| | - Heather M Felmy
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99352, United States
| | - Hannah B Bryan
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99352, United States
| | - Fabrice Lamadie
- CEA, DES, ISEC, DMRC, Univ Montpellier, SA2I, 30207 Bagnols-sur-Ceze, Marcoule, France
| | - Samuel A Bryan
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99352, United States
| | - Amanda M Lines
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99352, United States
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Špadina M, Bohinc K. Multiscale modeling of solvent extraction and the choice of reference state: Mesoscopic modeling as a bridge between nanoscale and chemical engineering. Curr Opin Colloid Interface Sci 2020. [DOI: 10.1016/j.cocis.2020.03.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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