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Qian Y, Scheinost AC, Grangeon S, Greneche JM, Hoving A, Bourhis E, Maubec N, Churakov SV, Fernandes MM. Oxidation State and Structure of Fe in Nontronite: From Oxidizing to Reducing Conditions. ACS EARTH & SPACE CHEMISTRY 2023; 7:1868-1881. [PMID: 37881367 PMCID: PMC10594735 DOI: 10.1021/acsearthspacechem.3c00136] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 08/30/2023] [Accepted: 08/30/2023] [Indexed: 10/27/2023]
Abstract
The redox reaction between natural Fe-containing clay minerals and its sorbates is a fundamental process controlling the cycles of many elements such as carbon, nutrients, redox-sensitive metals, and metalloids (e.g., Co, Mn, As, Se), and inorganic as well as organic pollutants in Earth's critical zone. While the structure of natural clay minerals under oxic conditions is well-known, less is known about their behavior under anoxic and reducing conditions, thereby impeding a full understanding of the mechanisms of clay-driven reduction and oxidation (redox) reactions especially under reducing conditions. Here we investigate the structure of a ferruginous natural clay smectite, nontronite, under different redox conditions, and compare several methods for the determination of iron redox states. Iron in nontronite was gradually reduced chemically with the citrate-bicarbonate-dithionite (CBD) method. 57Fe Mössbauer spectrometry, X-ray photoelectron spectroscopy (XPS), X-ray absorption near edge structure (XANES) spectroscopy including its pre-edge, extended X-ray absorption fine structure (EXAFS) spectroscopy, and mediated electrochemical oxidation and reduction (MEO/MER) provided consistent Fe(II)/Fe(III) ratios. By combining X-ray diffraction (XRD) and transmission electron microscopy (TEM), we show that the long-range structure of nontronite at the highest obtained reduction degree of 44% Fe(II) is not different from that of fully oxidized nontronite except for a slight basal plane dissolution on the external surfaces. The short-range order probed by EXAFS spectroscopy suggests, however, an increasing structural disorder and Fe clustering with increasing reduction of structural Fe.
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Affiliation(s)
- Yanting Qian
- Laboratory
for Waste Management, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
- Institute
for Geological Sciences, University of Bern, CH-3012 Bern, Switzerland
| | - Andreas C. Scheinost
- The
Rossendorf Beamline at the European Synchrotron Radiation Facility
(ESRF), Avenue des Martyrs
71, 38043, Grenoble, France
- Helmholtz
Zentrum Dresden Rossendorf, Institute of
Resource Ecology, Bautzner
Landstrasse 400, 01328, Dresden, Germany
| | | | - Jean-Marc Greneche
- Institut
des Molécules et Matériaux du Mans IMMM UMR CNRS 6283,
Le Mans Université, 72085, Le Mans Cedex 9, France
| | - Alwina Hoving
- TNO
Geological Survey of The Netherlands,
P.O. Box 80015, 3508 TA Utrecht, The Netherlands
| | - Eric Bourhis
- Interfaces,
Confinement, Matériaux et Nanostructures (ICMN), CNRS/Université
d’Orléans, UMR 7374, 1b rue de la Férollerie, CS 40059, 45071 Orléans, France
| | | | - Sergey V. Churakov
- Laboratory
for Waste Management, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
- Institute
for Geological Sciences, University of Bern, CH-3012 Bern, Switzerland
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Zhang H, Su L, Cheng C, Cheng H, Chang M, Liu F, Liu N, Oh K. A new type of calcium-rich biochars derived from spent mushroom substrates and their efficient adsorption properties for cationic dyes. Front Bioeng Biotechnol 2022; 10:1007630. [PMID: 36204471 PMCID: PMC9530940 DOI: 10.3389/fbioe.2022.1007630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 09/02/2022] [Indexed: 12/07/2022] Open
Abstract
Adsorption is commonly accepted as a most promising strategy in dye wastewater treatment, and the widespread use of adsorption emphasizes the need to explore low-cost but excellent adsorbents. Herein, a low-cost adsorbent (calcium-rich biochar) was developed, which was directly pyrolyzed from spent mushroom substate without any modification. This study evaluated the potential application of two calcium-rich biochars (GSBC and LSBC) derived from spent substrates of Ganoderma lucidum and Lentinus edodes, respectively. The effects of pyrolysis temperature on the calcium-rich biochars characteristics and their adsorption mechanism for cationic dyes (Malachite Green oxalate (MG) and Safranine T (ST)) were studied systematically. The increase in pyrolysis temperature from 350 to 750 °C led to an increase in both biochar ash, Ca content, and specific surface area, which made high-temperature biochars (GS750 and LS750) the superior adsorbents for cationic dyes. Batch adsorption results showed LS750 was more efficient to adsorb dyes than GS750 attributed to its higher Ca content and larger specific surface area. According to the Langmuir model, LS750 had high adsorption capacities of 9,388.04 and 3,871.48 mg g−1 for Malachite green and ST, respectively. The adsorption mechanism of dye MG could be attributed to pore filling, hydrogen bonding, electrostatic interaction, ion exchange, and π-π stacking, while ST adsorption mainly involved pore filling, electrostatic interaction, ion exchange, and π-π stacking. Attributed to their excellent adsorption performance, cheap source, and good reusability, biochars obtained from SMSs were very promising in dyeing wastewater treatment.
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Affiliation(s)
- Haibo Zhang
- College of Resources and Environment, Shanxi Agricultural University, Taigu, China
- State Key Laboratory of Sustainable Dryland Agriculture (in preparation), Shanxi Agricultural University, Shanxi, Taiyuan, China
- Shanxi Key Laboratory of Edible Fungi for Loess Plateau, Taigu, China
| | - Long Su
- College of Resources and Environment, Shanxi Agricultural University, Taigu, China
| | - Caiping Cheng
- College of Basic Science, Shanxi Agricultural University, Taigu, China
| | - Hongyan Cheng
- College of Resources and Environment, Shanxi Agricultural University, Taigu, China
- *Correspondence: Hongyan Cheng, ; Mingchang Chang,
| | - Mingchang Chang
- College of Food Science and Engineering, Shanxi Agricultural University, Taigu, China
- Collaborative Innovation Center of Advancing Quality and Efficiency of Loess Plateau Edible Fungi, Taigu, China
- *Correspondence: Hongyan Cheng, ; Mingchang Chang,
| | - Fenwu Liu
- College of Resources and Environment, Shanxi Agricultural University, Taigu, China
- State Key Laboratory of Sustainable Dryland Agriculture (in preparation), Shanxi Agricultural University, Shanxi, Taiyuan, China
| | - Na Liu
- College of Resources and Environment, Shanxi Agricultural University, Taigu, China
| | - Kokyo Oh
- Center for Environmental Science in Saitama, Kazo, Japan
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Silva LD, Lira TS, Xavier TP, Barrozo MAS, Dantas SC, Silvério BC, Santos KG. Effect of Temperature and MgCl
2
Concentration on the Catalytic Pyrolysis of Malt Waste Using Response Surface Methodology. ChemistrySelect 2022. [DOI: 10.1002/slct.202200663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lucas D. Silva
- Multicenter Chemistry Post-graduation Program of Minas Gerais State (PPGMQ-MG) Federal University of Triangulo Mineiro Av. Randolfo Borges Jr, 1400, B. Univerdecidade Uberaba-MG Brazil
| | - Taisa S. Lira
- Post-Graduation Program in Energy Federal University of Espírito Santo São Mateus-ES Brazil
| | - Thiago P. Xavier
- Post-Graduation Program in Energy Federal University of Espírito Santo São Mateus-ES Brazil
| | - Marcos A. S. Barrozo
- M.A.S. Barrozo. Post-Graduation Program in Chemical Engineering Federal University of Uberlândia Av. João Naves de Ávila, 2121, B. Santa Mônica Uberlândia- MG Brazil
| | - Sandra C. Dantas
- Multicenter Chemistry Post-graduation Program of Minas Gerais State (PPGMQ-MG) Federal University of Triangulo Mineiro Av. Randolfo Borges Jr, 1400, B. Univerdecidade Uberaba-MG Brazil
| | - Beatriz C. Silvério
- Multicenter Chemistry Post-graduation Program of Minas Gerais State (PPGMQ-MG) Federal University of Triangulo Mineiro Av. Randolfo Borges Jr, 1400, B. Univerdecidade Uberaba-MG Brazil
| | - K. G. Santos
- Multicenter Chemistry Post-graduation Program of Minas Gerais State (PPGMQ-MG) Federal University of Triangulo Mineiro Av. Randolfo Borges Jr, 1400, B. Univerdecidade Uberaba-MG Brazil
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Cataldo S, Lo Meo P, Conte P, Di Vincenzo A, Milea D, Pettignano A. Evaluation of adsorption ability of cyclodextrin-calixarene nanosponges towards Pb 2+ ion in aqueous solution. Carbohydr Polym 2021; 267:118151. [PMID: 34119126 DOI: 10.1016/j.carbpol.2021.118151] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/13/2021] [Accepted: 04/29/2021] [Indexed: 01/13/2023]
Abstract
Different cyclodextrin-calixarene nanosponges (CyCaNSs) have been characterized by means of FFC-NMR relaxometry, and used as sorbents to remove Pb2+ ions from aqueous solutions. Considering that the removal treatments may involve polluted waters with different characteristics, the adsorption experiments were performed on solutions without and with the addition of background salts, under different operational conditions. The adsorption abilities and affinities of the nanosponges towards Pb2+ ions were investigated by measuring the metal ion concentration by means of Inductively Coupled Plasma Emission Spectroscopy (ICP-OES) and Differential Pulse Anodic Stripping Voltammetry (DP-ASV). The acid-base properties of nanosponges and of metal ion as well as their interactions with the other interacting components of the systems have been considered in the evaluation of adsorption mechanism. Recycling and reuse experiments on the most efficient adsorbents were also performed. On the grounds of the results obtained, post-modified CyCaNSs appear promising materials for designing environmental remediation devices.
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Affiliation(s)
- Salvatore Cataldo
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università di Palermo, V.le delle Scienze ed. 17, 90128 Palermo, Italy
| | - Paolo Lo Meo
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, V.le delle Scienze, ed. 17, 90128 Palermo, Italy.
| | - Pellegrino Conte
- Dipartimento di Scienze Agrarie, Alimentari e Forestali (SAAF), Università di Palermo, V.le delle Scienze, ed. 4, 90128 Palermo, Italy
| | - Antonella Di Vincenzo
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, V.le delle Scienze, ed. 17, 90128 Palermo, Italy
| | - Demetrio Milea
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Universita degli Studi di Messina, V.le F. Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Alberto Pettignano
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università di Palermo, V.le delle Scienze ed. 17, 90128 Palermo, Italy.
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