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Kołodyńska D, Fila D, Hubicki Z. Recovery of Lanthanum(III) and Nickel(II) Ions from Acidic Solutions by the Highly Effective Ion Exchanger. Molecules 2020; 25:molecules25163718. [PMID: 32824060 PMCID: PMC7464285 DOI: 10.3390/molecules25163718] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 08/04/2020] [Accepted: 08/11/2020] [Indexed: 11/16/2022] Open
Abstract
The recovery of La(III) and Ni(II) ions by a macroporous cation exchanger in sodium form (Lewatit Monoplus SP112) has been studied in batch experiments under varying HNO3 concentrations (0.2-2.0 mol/dm3), La(III) and Ni(II) concentrations (25-200 mg/dm3), phase contact time (1-360 min), temperature (293-333 K), and resin mass (0.1-0.5 g). The experimental data revealed that the sorption process was dependent on all parameters used. The maximum sorption capacities were found at CHNO3 = 0.2 mol/dm3, m = 0.1 g, and T = 333 K. The kinetic data indicate that the sorption followed the pseudo-second order and film diffusion models. The sorption equilibrium time was reached at approximately 30 and 60 min for La(III) and Ni(II) ions, respectively. The equilibrium isotherm data were best fitted with the Langmuir model. The maximum monolayer capacities of Lewatit Monoplus SP112 were equal to 95.34 and 60.81 mg/g for La(III) and Ni(II) ions, respectively. The thermodynamic parameters showed that the sorption process was endothermic and spontaneous. Moreover, dynamic experiments were performed using the columns set. The resin regeneration was made using HCl and HNO3 solutions, and the desorption results exhibited effective regeneration. The ATR/FT-IR and XPS spectroscopy results indicated that the La(III) and Ni(II) ions were coordinated with the sulfonate groups.
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Barros Ó, Costa L, Costa F, Lago A, Rocha V, Vipotnik Z, Silva B, Tavares T. Recovery of Rare Earth Elements from Wastewater Towards a Circular Economy. Molecules 2019; 24:molecules24061005. [PMID: 30871164 PMCID: PMC6471397 DOI: 10.3390/molecules24061005] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 03/04/2019] [Accepted: 03/06/2019] [Indexed: 11/16/2022] Open
Abstract
The use of rare earth elements is a growing trend in diverse industrial activities, leading to the need for eco-friendly approaches to their efficient recovery and reuse. The aim of this work is the development of an environmentally friendly and competitive technology for the recovery of those elements from wastewater. Kinetic and equilibria batch assays were performed with zeolite, with and without bacterial biofilm, to entrap rare earth ions from aqueous solution. Continuous assays were also performed in column setups. Over 90% removal of lanthanum and cerium was achieved using zeolite as sorbent, with and without biofilm, decreasing to 70% and 80%, respectively, when suspended Bacillus cereus was used. Desorption from the zeolite reached over 60%, regardless of the tested conditions. When in continuous flow in columns, the removal yield was similar for all of the rare earth elements tested. Lanthanum and cerium were the elements most easily removed by all tested sorbents when tested in single- or multi-solute solutions, in batch and column assays. Rare earth removal from wastewater in open setups is possible, as well as their recovery by desorption processes, allowing a continuous mode of operation.
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Affiliation(s)
- Óscar Barros
- Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057, Braga, Portugal.
| | - Lara Costa
- Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057, Braga, Portugal.
| | - Filomena Costa
- Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057, Braga, Portugal.
| | - Ana Lago
- Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057, Braga, Portugal.
| | - Verónica Rocha
- Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057, Braga, Portugal.
| | - Ziva Vipotnik
- Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057, Braga, Portugal.
| | - Bruna Silva
- Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057, Braga, Portugal.
| | - Teresa Tavares
- Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057, Braga, Portugal.
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Iftekhar S, Ramasamy DL, Srivastava V, Asif MB, Sillanpää M. Understanding the factors affecting the adsorption of Lanthanum using different adsorbents: A critical review. Chemosphere 2018; 204:413-430. [PMID: 29677649 DOI: 10.1016/j.chemosphere.2018.04.053] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 04/08/2018] [Accepted: 04/10/2018] [Indexed: 05/10/2023]
Abstract
Over the past few decades, removal and recovery of Lanthanum (La) have received great attention due to its significance in different industrial processes. In this review, the application of various adsorbents viz. biosorbents, commercial and hybrid materials, nanoparticles, nanocomposites etc. have been summarized in terms of the removal and recovery of La. The influence of various operating parameters including pH, dosage, contact time, temperature, coexisting ions, adsorption kinetics, isotherm and thermodynamics were investigated. Statistical analysis of the obtained data revealed that 60% and 70% of the authors reported an optimum pH of 4-6 and a dose of 1-2 g/L, respectively. It can be concluded on the basis of an extensive literature survey that the adsorbent materials (especially hybrids nanocomposites) containing carboxyl, hydroxyl and amine groups offered efficient La removal over a wide range of pH with higher adsorption capacity as compared to other adsorbents (e.g., biosorbents and magnetic adsorbents). Also, in most cases, equilibrium and kinetics were followed by Langmuir and pseudo second-order model and adsorption was endothermic in nature. To evaluate the adsorption efficiency of several adsorbents towards La, desorption and regeneration of adsorbents should be given due consideration. The main objective of the review is to provide an insight into the important factors that may affect the recovery of La using various adsorbents.
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Affiliation(s)
- Sidra Iftekhar
- Department of Green Chemistry, School of Engineering Science, Lappeenranta University of Technology, Sammonkatu 12, FI-50130 Mikkeli, Finland.
| | - Deepika Lakshmi Ramasamy
- Department of Green Chemistry, School of Engineering Science, Lappeenranta University of Technology, Sammonkatu 12, FI-50130 Mikkeli, Finland
| | - Varsha Srivastava
- Department of Green Chemistry, School of Engineering Science, Lappeenranta University of Technology, Sammonkatu 12, FI-50130 Mikkeli, Finland
| | - Muhammad Bilal Asif
- Strategic Water Infrastructure Laboratory, School of Civil, Mining and Environmental Engineering, University of Wollongong, Wollongong NSW 2522, Australia
| | - Mika Sillanpää
- Department of Green Chemistry, School of Engineering Science, Lappeenranta University of Technology, Sammonkatu 12, FI-50130 Mikkeli, Finland; Department of Civil and Environmental Engineering, Florida International University, Miami, FL 33174, USA
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Abstract
In this case report, we describe two patients who showed a diffusely whitish mucosa in the posterior wall and the lesser curvature of the gastric body. The patients were serologically- and histopathologically-negative for Helicobacter pylori. Random biopsy specimens from the stomach revealed no regenerative changes, intestinal metaplasia, and/or foveolar hyperplasia in either of the patients. Although lanthanum deposition in the gastric mucosa has been reported to occur in close association with H. pylori-associated gastritis, our patients tested negative for H. pylori. These cases suggest that lanthanum deposition presents as whitish lesions in the gastric body in H. pylori-negative patients.
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Affiliation(s)
- Masaya Iwamuro
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Japan
| | - Haruo Urata
- Central Research Laboratory, Okayama University Medical School, Japan
| | | | - Seiji Kawano
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Japan
| | | | | | - Hiroyuki Okada
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Japan
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Iannicelli-Zubiani EM, Cristiani C, Dotelli G, Gallo Stampino P. Recovery of valuable metals from electronic scraps by clays and organo-clays: Study on bi-ionic model solutions. Waste Manag 2017; 60:582-590. [PMID: 27478027 DOI: 10.1016/j.wasman.2016.07.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 07/25/2016] [Accepted: 07/25/2016] [Indexed: 06/06/2023]
Abstract
The demand of valuable metals, as precious metals and rare earths, is constantly increasing in the global market, as many and different technological applications exploit these materials because of their unique properties. Since natural resources are located just in focused areas, an interesting possibility could be the recovery of metals from Waste Electrical and Electronic Equipment (WEEE). The aim of this work is to evaluate the recovery potentialities of clays and organo-clay based systems towards the metals contained in the solutions of electronic scraps dissolved in strong acid, by preliminary tests on bi-ionic model solutions. Lanthanum has been chosen as representative of the rare earths while copper has been considered since it is by far the most used metal in electric and electronic equipment. The considered sorbents are a montmorillonitic clay and two polyamine based organo-clays. Uptake and release processes have been carried out in order to assess the performances of these solids and to evaluate the uptake and release mechanisms. The results showed that the cationic exchange is the prevailing mechanism in the case of pristine clay, while both coordinating effect due to amino groups and cationic exchange occur in the case of modified clays, respectively accounting for copper and lanthanum uptake. Furthermore the pH was found having a great influence in both the adsorption and desorption phenomena.
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Affiliation(s)
- Elena Maria Iannicelli-Zubiani
- Politecnico di Milano, Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Piazza Leonardo Da Vinci 32, 20133 Milano, Italy.
| | - Cinzia Cristiani
- Politecnico di Milano, Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Piazza Leonardo Da Vinci 32, 20133 Milano, Italy
| | - Giovanni Dotelli
- Politecnico di Milano, Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Piazza Leonardo Da Vinci 32, 20133 Milano, Italy
| | - Paola Gallo Stampino
- Politecnico di Milano, Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Piazza Leonardo Da Vinci 32, 20133 Milano, Italy
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Yip M, Saripan MI, Wells K, Bradley DA. Monte Carlo Simulations for the Detection of Buried Objects Using Single Sided Backscattered Radiation. PLoS One 2015; 10:e0135769. [PMID: 26348619 PMCID: PMC4562623 DOI: 10.1371/journal.pone.0135769] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 07/27/2015] [Indexed: 11/25/2022] Open
Abstract
Background Detection of buried improvised explosive devices (IEDs) is a delicate task, leading to a need to develop sensitive stand-off detection technology. The shape, composition and size of the IEDs can be expected to be revised over time in an effort to overcome increasingly sophisticated detection methods. As an example, for the most part, landmines are found through metal detection which has led to increasing use of non-ferrous materials such as wood or plastic containers for chemical based explosives being developed. Methodology Monte Carlo simulations have been undertaken considering three different commercially available detector materials (hyperpure-Ge (HPGe), lanthanum(III) bromide (LaBr) and thallium activated sodium iodide (NaI(Tl)), applied at a stand-off distance of 50 cm from the surface and burial depths of 0, 5 and 10 cm, with sand as the obfuscating medium. Target materials representing medium density wood and mild steel have been considered. Each detector has been modelled as a 10 cm thick cylinder with a 20 cm diameter. Principal Findings It appears that HPGe represents the most promising detector for this application. Although it was not the highest density material studied, its excellent energy resolving capability leads to the highest quality spectra from which detection decisions can be inferred. Conclusions The simulation work undertaken here suggests that a vehicle-born threat detection system could be envisaged using a single betatron and a series of detectors operating in parallel observing the space directly in front of the vehicle path. Furthermore, results show that non-ferrous materials such as wood can be effectively discerned in such remote-operated detection system, with the potential to apply a signature analysis template matching technique for real-time analysis of such data.
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Affiliation(s)
- Mary Yip
- Centre for Vision, Speech and Signal Processing, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, United Kingdom
- Department of Physics, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom
| | - M. Iqbal Saripan
- Department of Computer and Communication Systems Engineering, Faculty of Engineering, Universiti Putra Malaysia (UPM), 43400 UPM, Selangor, Malaysia
| | - Kevin Wells
- Centre for Vision, Speech and Signal Processing, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, United Kingdom
- * E-mail:
| | - David A. Bradley
- Department of Physics, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom
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Muravyov MI, Bulaev AG, Melamud VS, Kondrat'eva TF. [Leaching of Rare Earth Elements from Coal Ashes Using Acidophilic Chemolithotrophic Microbial Communities]. Mikrobiologiia 2015; 84:216-224. [PMID: 26263628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A method for leaching rare earth elements from coal ash in the presence of elemental sulfur using communities of acidophilic chemolithotrophic microorganisms was proposed. The optimal parameters determined for rare element leaching in reactors were as follows: temperature, 45 degrees C; initial pH, 2.0; pulp density, 10%; and the coal ash to elemental sulfur ratio, 10 : 1. After ten days of leaching, 52.0, 52.6, and 59.5% of scandium, yttrium, and lanthanum, respectively, were recovered.
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Abstract
The aim of this study is to describe the experimental results of external surface mechanical decontamination of the studied materials forming selected suits. Seven types of personal protective suits declaring protection against radioactive aerosol contamination in different price ranges were selected for decontamination experiments. The outcome of this study is to compare the efficiency of a double-step decontamination process on various personal protective suits against radioactive contamination. A comparison of the decontamination effectiveness for the same type of suit, but for the different chemical mixtures ((140)La in a water-soluble or in a water-insoluble compound), was performed.
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Affiliation(s)
- I Vošahlíková
- The National Institute for Nuclear, Chemical and Biological Protection, Kamenná 71, Milín 262 31, Czech Republic
| | - P Otáhal
- The National Institute for Nuclear, Chemical and Biological Protection, Kamenná 71, Milín 262 31, Czech Republic
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Birungi ZS, Chirwa EMN. The kinetics of uptake and recovery of lanthanum using freshwater algae as biosorbents: comparative analysis. Bioresour Technol 2014; 160:43-51. [PMID: 24507581 DOI: 10.1016/j.biortech.2014.01.033] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 01/07/2014] [Accepted: 01/10/2014] [Indexed: 06/03/2023]
Abstract
In this study, the adsorption and desorption kinetics of lanthanum (La) on micro algal cells was investigated. The internal transcribed spacer (ITS) and 18S ribosomal RNA gene (rRNA) were used for molecular identification of the species. The algal species were found to have 95-98% identities to Desmodesmus multivariabilis, Scenedesmus acuminutus, Chloroidium saccharophilum and Stichococcus bacillaris. The species were cultured and tested independently. D. multivariabilis was found to be the most efficient at adsorbing lanthanum with a maximum sorption capacity (qmax) of 100 mg/g and a high affinity (b) of 4.55 L/g. Desorption of La was also highest in D. multivariabilis with recovery up to 99.63% at initial concentration as high as 100 mg/L. Desorption data fitted best to the modified pseudo second-order with a better correlation coefficient (R(2)) of ⩽0.98 than first order model. The results showed feasibility of lanthanum recovery using algal sorbents, a cost effective method.
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Affiliation(s)
- Z S Birungi
- University of Pretoria, Department of Chemical Engineering, Lynnwood Road, Private Bag X20, Hatfield, Pretoria 0002, South Africa.
| | - E M N Chirwa
- University of Pretoria, Department of Chemical Engineering, Lynnwood Road, Private Bag X20, Hatfield, Pretoria 0002, South Africa
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Oliveira RC, Guibal E, Garcia O. Biosorption and desorption of lanthanum(III) and neodymium(III) in fixed-bed columns with Sargassum sp.: perspectives for separation of rare earth metals. Biotechnol Prog 2012; 28:715-22. [PMID: 22275117 DOI: 10.1002/btpr.1525] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Revised: 01/02/2012] [Indexed: 11/10/2022]
Abstract
Rare earth (RE) metals are essentials for the manufacturing of high-technology products. The separation of RE is complex and expensive; biosorption is an alternative to conventional processes. This work focuses on the biosorption of monocomponent and bicomponent solutions of lanthanum(III) and neodymium(III) in fixed-bed columns using Sargassum sp. biomass. The desorption of metals with HCl 0.10 mol L(-1) from loaded biomass is also carried out with the objective of increasing the efficiency of metal separation. Simple models have been successfully used to model breakthrough curves (i.e., Thomas, Bohart-Adams, and Yoon-Nelson equations) for the biosorption of monocomponent solutions. From biosorption and desorption experiments in both monocomponent and bicomponent solutions, a slight selectivity of the biomass for Nd(III) over La(III) is observed. The experiments did not find an effective separation of the RE studied, but their results indicate a possible partition between the metals, which is the fundamental condition for separation perspectives.
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Affiliation(s)
- Robson C Oliveira
- Departamento de Bioquímica e Tecnologia Química, Instituto de Química, UNESP-Univ Estadual Paulista, Rua Prof. Francisco Degni, s/n, C. P. 14800-900, Araraquara/SP, Brazil.
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Galunin E, Alba MD, Avilés MA, Santos MJ, Vidal M. Reversibility of La and Lu sorption onto smectites: implications for the design of engineered barriers in deep geological repositories. J Hazard Mater 2009; 172:1198-1205. [PMID: 19720457 DOI: 10.1016/j.jhazmat.2009.07.124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2009] [Revised: 07/29/2009] [Accepted: 07/29/2009] [Indexed: 05/28/2023]
Abstract
The sorption reversibility of La and Lu (considered as actinide analogues) onto a set of smectites (bentonite FEBEX; hectorite, HEC; MX80; saponite, SAP; Otay montmorillonite, SCa-3; and Texas montmorillonite, STx-1) was studied to estimate actinide retention by smectites that are candidates for use as engineered barriers in deep geological repositories. The sorption distribution coefficients (K(d)) and the reversibility parameters (desorption distribution coefficients (K(d,des)), adjusted distribution coefficients (K(d,adj)), and desorption rates (R(des))) were determined from batch tests in two ionic media: deionized water and Ca 0.02 mol L(-1). The latter simulates possible conditions due to the presence of concrete leachates. The results varied greatly depending on the ionic medium, the lanthanide concentration and the clay structure. The high values of K(d,des) obtained (up to 1.1 x 10(5) and 9.2 x 10(4) L kg(-1) for La and Lu in water, and 2.8 x 10(4) and 4.1 x 10(4)L kg(-1) for La and Lu in the Ca medium) indicate the suitability of the tested smectites for lanthanide (and therefore, actinide) retention. Based on all the data, SCa-3, HEC and FEBEX clays are considered the best choices for water environments, whereas in Ca environments the suitable clays depended on the lanthanide considered.
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Affiliation(s)
- Evgeny Galunin
- Departament de Química Analítica, Universitat de Barcelona, 08028 Barcelona, Spain
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Kanamori T, Matsuda M, Miyake M. Recovery of rare metal compounds from nickel-metal hydride battery waste and their application to CH4 dry reforming catalyst. J Hazard Mater 2009; 169:240-245. [PMID: 19395161 DOI: 10.1016/j.jhazmat.2009.03.079] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2008] [Revised: 03/15/2009] [Accepted: 03/19/2009] [Indexed: 05/27/2023]
Abstract
The recovery of valuable components such as nickel from nickel-metal hydride (Ni-MH) battery waste by chemical processes and their applications to CH(4) dry reforming catalysts were investigated. Three types of compound, identified by XRD analysis as NiO, CeO(2) and LaCoO(3) phases, were successfully separated from the waste by a series of chemical processes at room temperature using aqueous solutions of HCl, NaOH and NH(3), and Ni component of approximately 70% in Ni-MH battery waste was recovered. The separated NiO, CeO(2) and LaCoO(3) showed catalytic activities for CH(4) dry reforming. In particular, the separated NiO easily reduced to Ni(0) at an initial stage, and exhibited excellent catalytic activity in terms of CH(4) conversion and stability. Furthermore, it was found that the resulting Ni from separated NiO exhibited an anomalous catalysis from the comparison with that from regent NiO.
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Affiliation(s)
- Tomohiro Kanamori
- Department of Material and Energy Science, Graduate School of Environmental Science, Okayama University, Tsushima-Naka, Okayama 700-8530, Japan
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Nilchi A, Hadjmohammadi MR, Rasouli Garmarodi S, Saberi R. Studies on the adsorption behavior of trace amounts of 90Sr2+, 140La3+, 60Co2+, Ni2+ and Zr4+ cations on synthesized inorganic ion exchangers. J Hazard Mater 2009; 167:531-535. [PMID: 19188026 DOI: 10.1016/j.jhazmat.2009.01.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2008] [Revised: 12/08/2008] [Accepted: 01/08/2009] [Indexed: 05/27/2023]
Abstract
Three inorganic ion exchangers namely potassium zinc hexacyanoferrate(II) (PZF), magnesium oxide-polyacrylonitrile composite (MgO-PAN) and ammonium molybdophosphate (AMP) were synthesized. The physicochemical properties of these ion exchangers were determined using different techniques including inductively coupled plasma (ICP), CHNSO elemental analysis, infrared spectroscopy (IR), X-ray diffraction (XRD), thermogravimetric (TGA) and pH - titration curve analysis. The solubility of the synthesized ion exchangers in different acidic and alkaline media, their thermal stability and the effect of gamma irradiation were investigated. It was observed that the exchange capacity of the ion exchangers depend upon the pH value of the solution used. Furthermore, the adsorption of (90)Sr(2+), (140)La(3+), (60)Co(2+) and the distribution coefficient of these ion exchangers for Ni(2+)and Zr(4+) were studied. The effect of parameters such as pH and contact time on the adsorption was also investigated and the optimum conditions for separation of these ions were determined.
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Affiliation(s)
- A Nilchi
- Nuclear Science and Technology Research Institute, Nuclear Science Research School, J. I. H. Research Laboratories, Tehran, Iran.
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Il'inskikh EN, Novitskiĭ VV, Il'inskikh NN, Lepekhin AV. [Accumulation of some toxic microelements in liver tissue and helminthes obtained from patients with Opisthorhis felineus (Rivolta, 1884) and Metorchis bilis (Braun, 1890) invasion]. Med Parazitol (Mosk) 2006:37-40. [PMID: 17290908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
According to some available reports, it is known that there may be an increased accumulation of some micronutrients in the samples of hair and blood. The purpose of the present investigation was to study the general regularities of accumulation of micronutrients in the samples of liver tissue and helminthic bodies obtained from patients with opisthorchiasis who lived in Tomsk and who had different etiological types of Opisthorchis (O. felineus) and Metorchis (M. bilis). The fact that M. bilis helminthes were present in 15 of 22 liver samples was verified by polymerase chain reaction. As compared with healthy individuals, patients with Opisthorchis invasion (particularly those with mixed Opisthorchis and Metorchis invasion) were found to have an increased liver tissue accumulation of chromium, mercury, cesium, lanthanum, and cobalt.
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Kobayashi S, Mizushima A, Sasuga A, Watanabe M. Development of Soft-Based Double-Stranded Peptide Chelators which Selectively Separate Europium and Lanthanum Ions Based on the Hardness Concept. Chem Pharm Bull (Tokyo) 2006; 54:761-3. [PMID: 16651788 DOI: 10.1248/cpb.54.761] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
New double-stranded peptide chelators (1) conjugated Cat (2,3-dihydroxybenzoic acid) were synthesized and formed a molecular complex 1-Eu(3+) (or 1-Lu(3+)) with Eu(3+) and Lu(3+) but not La(3+). The double-stranded peptide chelator may prove to be useful tools for studying the selective separation of lanthanide ions.
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Affiliation(s)
- Shigeki Kobayashi
- Department of Analytical Chemistry of Medicines, Showa Pharmaceutical University,3-3165 Higashi-tamagawagakuen, Machida, Tokyo 194-8543, Japan
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Diniz V, Volesky B. Biosorption of La, Eu and Yb using Sargassum biomass. Water Res 2005; 39:239-47. [PMID: 15607182 DOI: 10.1016/j.watres.2004.09.009] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2004] [Revised: 09/01/2004] [Accepted: 09/15/2004] [Indexed: 05/24/2023]
Abstract
Biosorption of the lanthanides: Lanthanum (La(3+)), Europium (Eu(3+)) and Ytterbium (Yb(3+)) from single-component and multi-component batch systems using Sargassum polycystum Ca-loaded biomass was studied. The ion exchange sorption mechanism was confirmed by the release of calcium ions from the biomass that matched the total number of metal and protons removed from the solution. The metal binding increased with pH due to the decrease of proton concentration in the system, as they also compete for the binding sites. The maximum metal uptake capacity for pH 3, 4 and 5 ranged approximately between (0.8-0.9) mmol g(-1) for La (0.8-0.9) mmol g(-1) for Eu, and (0.7-0.9) mmol g(-1) for Yb. Biosorption from multi-component mixtures was examined at pH 4 using equimolar initial concentrations of the metals. The metal affinity sequence established was Eu>La>Yb, and the maximum metal uptake obtained was 0.29, 0.41, 0.28 mmol g(-1) for La, Eu and Yb, respectively.
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Affiliation(s)
- Vivian Diniz
- Department of Chemical Engineering, McGill University, 3610 University Street, Montreal, Que, Canada, H3A 2B2.
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Li S, Hu B, Jiang Z, Liang P, Li X, Xia L. Selective separation of La3+ and lanthanum organic complexes with nanometer-sized titanium dioxide and their detection by using fluorination-assisted electrothermal vaporization ICP-AES with in-situ matrix removal. Environ Sci Technol 2004; 38:2248-2251. [PMID: 15112831 DOI: 10.1021/es030342f] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A new method for the determination of free La3+ and La organic complexes in solution using a nanometer-sized titanium dioxide as solid-phase extractant and fluorination-assisted electrothermal vaporization (FETV)-ICP-AES as sensitive detector has been developed. The effect of pH on the adsorption characteristics of La3+ and La complexes of citric acid, 2-hydroxyisobutyric acid (HIBA), and humic acid on nanometer-sized TiO2 was investigated and optimized. On the basis of the difference in volatility between fluoride of analyte (lanthanum) and the fluoride of matrix (titanium), an in-situ removal of the adsorbent matrix (TiO2) from a graphite furnace was realized. Therefore, the free La3+ and adsorbed La complexes on nanometer-sized titanium dioxide could be determined respectively by FETV-ICP-AES without any other chemical pretreatment. The proposed method was applied for the determination of free ion (La3+) and La complexes in synthetic solutions and soil extracts with satisfactory results.
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Affiliation(s)
- Shengqing Li
- Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
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Deng FZ, Shi Y, Wang HS. [Study on the separation and spectroscopic characteristics of titanium and lauthanum in two-phase aqueous systems]. Guang Pu Xue Yu Guang Pu Fen Xi 2002; 22:441-443. [PMID: 12938328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In Polyethylene glycol-ammonium sulfate-chrome azurol S two-phase aqueous systems, the liquid-liquid extraction behavior of Ti(IV), Zr(IV) and La(III) with chrome azurol S as the extractant was investigated. Experimental result indicated that the complex of La(III) with CAS was almost completely extracted by the PEG phase, Zr(IV) partly extracted, while Ti(IV) was not extracted from the aqueous solution of pH 4.5-7.0. So extraction separation of Ti(IV)-La(III) was carried out at pH 5.5. Comparing to a general water phase spectrophotometry, the new method has advantage of maximum wavelength of complex shifted to the red wavelength, existing form of complex anion in PEG phase was studied by the addition of surface-active agent and the measurement of absorption spectra.
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Affiliation(s)
- Fan-zheng Deng
- Department of Chemistry, Huaibei Coal Teachers' College, Huaibei 235000, China
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Macaskie LE, Jeong BC, Tolley MR. Enzymically accelerated biomineralization of heavy metals: application to the removal of americium and plutonium from aqueous flows. FEMS Microbiol Rev 1994; 14:351-67. [PMID: 7917422 DOI: 10.1111/j.1574-6976.1994.tb00109.x] [Citation(s) in RCA: 83] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
A biological process for the removal of heavy metals from the aqueous flows is described. Metals are precipitated on the surface of immobilized cells of a Citrobacter sp. as cell-bound metal phosphates. This uses phosphate liberated by the activity of a cell-bound phosphatase. Some radionuclides (e.g. 241americium) form metal phosphates readily; efficient removal of 241Am on a continuous basis is demonstrated. At low phosphatase activities, the efficiency of uranium removal correlates with enzyme activity. High phosphatase activities are not realised as an increase in metal removal, suggesting that chemical events become rate-limiting. Studies have suggested that maximal metal uptake occurs only after nucleation and the formation of precipitation foci. A model is presented to illustrate how nucleation and crystallization processes could enhance the removal of plutonium and neptunium from dilute solutions.
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Affiliation(s)
- L E Macaskie
- School of Biological Sciences, University of Birmingham, Edgbaston, UK
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Abstract
Besides being widely used in electronic and glass industries, rare earth elements have recently been found to have important biological effects including the ability to stabilize and enhance interferon activity [J.J. Sedmak and S.E. Grossberg, J. Gen. Virol, 52 (1981) 195]. In this paper, the rare earth elements have been separated using a high-speed counter-current chromatography (HSCCC) centrifuge equipped with three multilayer coils connected in series. Two-phase solvent systems were composed of n-heptane containing di-(2-ethylhexyl)phosphoric acid (stationary phase) and dilute hydrochloric acid (mobile phase) where the partition coefficient of each can be optimized by selecting the proper hydrochloric acid concentration. The mobile phase was eluted through the column at a flow-rate of 5 ml/min, while the apparatus was rotated at 900 rpm. Continuous detection of the rare earth elements was effected by means of a post-column reaction with arsenazo III and the elution curve was obtained by on-line monitoring at 650 nm. Excellent isocratic separations of closely related rare earth elements were achieved at high partition efficiencies up to several thousand theoretical plates. Versatility of the present method was demonstrated in an exponential gradient elution of hydrochloric acid concentration where fourteen rare earth elements were all resolved in about 4.5 h.
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Affiliation(s)
- E Kitazume
- Laboratory of Biophysical Chemistry, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892
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Lane NJ, Treherne JE. Studies on perineural junctional complexes and the sites of uptake of microperoxidase and lanthanum in the cockroach central nervous system. Tissue Cell 1972; 4:427-36. [PMID: 4120704 DOI: 10.1016/s0040-8166(72)80019-3] [Citation(s) in RCA: 78] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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