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Mysore Ramesha B, Pawlak B, Arenas Esteban D, Reekmans G, Bals S, Marchal W, Carleer R, Adriaensens P, Meynen V. Partial Hydrolysis of Diphosphonate Ester During the Formation of Hybrid TiO 2 Nanoparticles: Role of Acid Concentration. Chemphyschem 2023; 24:e202300437. [PMID: 37669423 DOI: 10.1002/cphc.202300437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 09/03/2023] [Accepted: 09/05/2023] [Indexed: 09/07/2023]
Abstract
The hydrolysis of the phosphonate ester linker during the synthesis of hybrid (organic-inorganic) TiO2 nanoparticles is important when forming porous hybrid organic-inorganic metal phosphonates. In the present work, a method was utilized to control the in-situ partial hydrolysis of diphosphonate ester in the presence of a titania precursor as a function of acid content, and its impact on the hybrid nanoparticles was assessed. Organodiphosphonate esters, and more specific, their hydrolysis degree during the formation of hybrid organic-inorganic metal oxide nanoparticles, are relatively under explored as linkers. Here, a detailed analysis on the hydrolysis of tetraethyl propylene diphosphonate ester (TEPD) as diphosphonate linker to produce hybrid TiO2 nanoparticles is discussed as a function of acid content. Quantitative solution NMR spectroscopy revealed that during the synthesis of TiO2 nanoparticles, an increase in acid concentration introduces a higher degree of partial hydrolysis of the TEPD linker into diverse acid/ester derivatives of TEPD. Increasing the HCl/Ti ratio from 1 to 3, resulted in an increase in degree of partial hydrolysis of the TEPD linker in solution from 4 % to 18.8 % under the applied conditions. As a result of the difference in partial hydrolysis, the linker-TiO2 bonding was altered. Upon subsequent drying of the colloidal TiO2 solution, different textures, at nanoscale and macroscopic scale, were obtained dependent on the HCl/Ti ratio and thus the degree of hydrolysis of TEPD. Understanding such linker-TiO2 nanoparticle surface dynamics is crucial for making hybrid organic-inorganic materials (i. e. (porous) metal phosphonates) employed in applications such as electronic/photonic devices, separation technology and heterogeneous catalysis.
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Affiliation(s)
- Bharadwaj Mysore Ramesha
- Laboratory of Adsorption and Catalysis (LADCA), Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium
| | - Bram Pawlak
- Analytical and Circular Chemistry (ACC), Institute for Materials Research (IMO-IMOMEC), University of Hasselt, Agoralaan 1, 3590, Diepenbeek, Belgium
| | - Daniel Arenas Esteban
- Electron Microscopy for Materials Research (EMAT), NANOlab Centre of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Gunter Reekmans
- Analytical and Circular Chemistry (ACC), Institute for Materials Research (IMO-IMOMEC), University of Hasselt, Agoralaan 1, 3590, Diepenbeek, Belgium
| | - Sara Bals
- Electron Microscopy for Materials Research (EMAT), NANOlab Centre of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Wouter Marchal
- Analytical and Circular Chemistry (ACC), Institute for Materials Research (IMO-IMOMEC), University of Hasselt, Agoralaan 1, 3590, Diepenbeek, Belgium
| | - Robert Carleer
- Analytical and Circular Chemistry (ACC), Institute for Materials Research (IMO-IMOMEC), University of Hasselt, Agoralaan 1, 3590, Diepenbeek, Belgium
| | - Peter Adriaensens
- Analytical and Circular Chemistry (ACC), Institute for Materials Research (IMO-IMOMEC), University of Hasselt, Agoralaan 1, 3590, Diepenbeek, Belgium
| | - Vera Meynen
- Laboratory of Adsorption and Catalysis (LADCA), Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium
- Sustainable Materials Management, Flemish Institute for Technological Research (VITO NV), Boeretang 200, 2400, Mol, Belgium
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Lataf A, Carleer R, Yperman J, Schreurs S, D'Haen J, Cuypers A, Vandamme D. The screening of various biochars for Cd 2+ removal at relevant soil pH. Waste Manag 2023; 168:376-385. [PMID: 37348380 DOI: 10.1016/j.wasman.2023.06.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 04/04/2023] [Revised: 06/11/2023] [Accepted: 06/13/2023] [Indexed: 06/24/2023]
Abstract
Fourteen biochars from seven biomass sources were investigated on their long-term Cd2+ removal. The experiments consisted of a ten-day batch Cd2+ adsorption in a pH-buffered solution (pH = 6) to minimise pH effects. Insect frass, spent peat and chicken manure-derived biochars are promising Cd2+ adsorbents. Pyrolysis temperature was crucial for optimising Cd2+ removal by insect frass and spent peat-derived biochars. For these biochars, a pyrolysis temperature of 450 °C was optimal. In contrast, the Cd2+ removal by chicken manure biochars was independent of pyrolysis temperature. The Cd2+ removal by insect-frass and spent peat-derived biochars was associated with chemisorption on surface functionalities, while using chicken manure biochars was more associated with Cd2+ precipitation. The kinetics of Cd2+ removal over the course of ten days showed that insect frass biochar (450 °C) showed a gradual increase from 36 to 75 % Cd2+ removal, while chicken manure and spent peat-derived biochar (450 °C) already showed a higher Cd2+ removal (72 - 89 %) after day 1. This evidences that a long-term Cd2+ removal effect can be expected for some biochars. This should certainly be taken into consideration in future soil-based experiments.
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Affiliation(s)
- A Lataf
- Analytical and Circular Chemistry, IMO, CMK, Hasselt University, Agoralaan Building D, 3590 Diepenbeek, Belgium
| | - R Carleer
- Analytical and Circular Chemistry, IMO, CMK, Hasselt University, Agoralaan Building D, 3590 Diepenbeek, Belgium
| | - J Yperman
- Analytical and Circular Chemistry, IMO, CMK, Hasselt University, Agoralaan Building D, 3590 Diepenbeek, Belgium
| | - S Schreurs
- NuTeC, CMK, Hasselt University, Agoralaan Building H, 3590 Diepenbeek, Belgium
| | - J D'Haen
- Institute for Materials Research and Imec division Imomec (IMO-IMOMEC), Hasselt University, 3590 Diepenbeek, Belgium
| | - A Cuypers
- Environmental Biology, CMK, Hasselt University, Agoralaan Building D, 3590 Diepenbeek, Belgium
| | - D Vandamme
- Analytical and Circular Chemistry, IMO, CMK, Hasselt University, Agoralaan Building D, 3590 Diepenbeek, Belgium.
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Cincotta A, Nicolaï M, Campos HBN, McNamara M, D'Alba L, Shawkey MD, Kischlat EE, Yans J, Carleer R, Escuillié F, Godefroit P. Pterosaur melanosomes support signalling functions for early feathers. Nature 2022; 604:684-688. [PMID: 35444275 PMCID: PMC9046085 DOI: 10.1038/s41586-022-04622-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 03/07/2022] [Indexed: 01/10/2023]
Abstract
Remarkably well-preserved soft tissues in Mesozoic fossils have yielded substantial insights into the evolution of feathers1. New evidence of branched feathers in pterosaurs suggests that feathers originated in the avemetatarsalian ancestor of pterosaurs and dinosaurs in the Early Triassic2, but the homology of these pterosaur structures with feathers is controversial3,4. Reports of pterosaur feathers with homogeneous ovoid melanosome geometries2,5 suggest that they exhibited limited variation in colour, supporting hypotheses that early feathers functioned primarily in thermoregulation6. Here we report the presence of diverse melanosome geometries in the skin and simple and branched feathers of a tapejarid pterosaur from the Early Cretaceous found in Brazil. The melanosomes form distinct populations in different feather types and the skin, a feature previously known only in theropod dinosaurs, including birds. These tissue-specific melanosome geometries in pterosaurs indicate that manipulation of feather colour-and thus functions of feathers in visual communication-has deep evolutionary origins. These features show that genetic regulation of melanosome chemistry and shape7-9 was active early in feather evolution.
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Affiliation(s)
- Aude Cincotta
- Directorate Earth and History of Life, Royal Belgian Institute of Natural Sciences, Brussels, Belgium. .,Institute of Life, Earth and Environment, University of Namur, Namur, Belgium. .,School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland. .,Environmental Research Institute, University College Cork, Cork, Ireland.
| | - Michaël Nicolaï
- Evolution and Optics of Nanostructures Group, Biology Department, Ghent University, Ghent, Belgium
| | | | - Maria McNamara
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland. .,Environmental Research Institute, University College Cork, Cork, Ireland.
| | - Liliana D'Alba
- Evolution and Optics of Nanostructures Group, Biology Department, Ghent University, Ghent, Belgium.,Naturalis Biodiversity Center, Leiden, The Netherlands
| | - Matthew D Shawkey
- Evolution and Optics of Nanostructures Group, Biology Department, Ghent University, Ghent, Belgium
| | - Edio-Ernst Kischlat
- Divisão de Bacias Sedimentares, Geological Survey of Brazil, Porto Alegre, Brazil
| | - Johan Yans
- Institute of Life, Earth and Environment, University of Namur, Namur, Belgium
| | - Robert Carleer
- Research Group of Analytical and Circular Chemistry, Institute for Material Research, Hasselt University, Diepenbeek, Belgium
| | | | - Pascal Godefroit
- Directorate Earth and History of Life, Royal Belgian Institute of Natural Sciences, Brussels, Belgium
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Mariño Peacok T, Crespo Sariol H, Yperman J, Sánchez Roca Á, Carleer R, Puente Torres J, Adriaensens P, Gryglewicz G, Reggers G, Czech J, Vandamme D, Salomón García L. Infrared thermography: A new approach for the characterization and management of activated carbons applied in water treatment. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2021.116881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Puente Torres J, Crespo Sariol H, Mariño Peacok T, Yperman J, Adriaensens P, Carleer R, Brito Sauvanell Á. X-ray Absorption (XRA): A New Technique for the Characterization of Granular Activated Carbons. Materials (Basel) 2020; 14:ma14010091. [PMID: 33379219 PMCID: PMC7795858 DOI: 10.3390/ma14010091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/07/2020] [Accepted: 12/11/2020] [Indexed: 11/29/2022]
Abstract
The X-ray absorption (XRA) method using digital image processing techniques is a reliable technique to determine the exhaustion degree of granular activated carbons (GACs). Using an innovative digital image processing technique, the identification of individual adsorbed molecules or ions in a GAC was possible. Adsorption isotherm models (Langmuir and Freundlich) were used to simulate the adsorption equilibrium data of Methylene Blue (MB), nickel, cobalt and iodine. Freundlich equation was found to have the highest value of R2 compared with Langmuir. The identification of distinctive patterns applying XRA for different adsorbed ions and molecules onto GAC was explored. It is demonstrated that unique XRA configurations for each adsorbed ion or molecule are found, as well as a proportional relationship between its incident energy (needed to achieve maximum photon attenuation) and the (effective) atomic number, the adsorbate mass and the molar or atomic mass of adsorbed molecule or ion. XRA method in combination with image histogram modifications was used to obtain a digital signature of adsorbed ions/molecules, giving distinct GSI values for each one in the used energy range. Probabilistic models prove that XRA results are within relationships between effective atomic number and photonic interaction probability, reinforcing the potentialities of XRA for monitoring (multi-)ion and/or molecule combinations on GAC using advanced digital image processing techniques. It was proved that the proposed approach could assess different adsorbed ions/molecules onto GACs in water purification systems.
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Affiliation(s)
- Jeamichel Puente Torres
- Faculty of Electrical Engineering, Universidad de Oriente, Santiago de Cuba 90600, Cuba;
- Provincial Center of Electro-Medicine, Department of Biomedical Metrology, Universidad de Oriente, Santiago de Cuba 90600, Cuba
| | - Harold Crespo Sariol
- Applied Acoustic Laboratory, Faculty of Chemical Engineering, Universidad de Oriente, Santiago de Cuba 90600, Cuba; (H.C.S.); (T.M.P.)
| | - Thayset Mariño Peacok
- Applied Acoustic Laboratory, Faculty of Chemical Engineering, Universidad de Oriente, Santiago de Cuba 90600, Cuba; (H.C.S.); (T.M.P.)
| | - Jan Yperman
- Research Group of Applied and Analytical Chemistry, Faculty of Sciences, Hasselt University, 3590 Diepenbeek, Belgium; (P.A.); (R.C.)
- Correspondence: ; Tel.: +32-11-268295
| | - Peter Adriaensens
- Research Group of Applied and Analytical Chemistry, Faculty of Sciences, Hasselt University, 3590 Diepenbeek, Belgium; (P.A.); (R.C.)
| | - Robert Carleer
- Research Group of Applied and Analytical Chemistry, Faculty of Sciences, Hasselt University, 3590 Diepenbeek, Belgium; (P.A.); (R.C.)
| | - Ángel Brito Sauvanell
- Energetic Efficiency Center, Faculty of Chemical Engineering, Universidad de Oriente, Santiago de Cuba 90600, Cuba;
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Torres JP, Codorniu RT, Baracaldo RL, Sariol HC, Peacok TM, Yperman J, Adriaensens P, Carleer R, Sauvanell ÁB. A convolutional neural networks approach using X-Ray absorption images for studying granular activated carbon. SN Appl Sci 2020. [DOI: 10.1007/s42452-020-03835-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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Yperman J, Carleer R, Reggers G, Mullens J, Poucke LV. Automation of Potentiometric Measurements: Determination of Water-Extractable Sodium in Bread Using a Sodium Ion Selective Electrode with Minimum Sample Preparation. J AOAC Int 2020. [DOI: 10.1093/jaoac/76.5.1138] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Different automated potentiometric procedures for the determination of NaCI in bread have been investigated and evaluated. The results are compared with data from atomic absorption spectrophotometry (AAS). A continuous potentiometric Na+ determination using a sodium ion selective electrode (ISE) is superior to all other methods. The sodium content can be measured by a reliable, rapid, and inexpensive potentiometric measurement of a finely ground and dried bread sample, extracted in the measurement beaker, as an alternative to the conventional and time-consuming AAS procedure.
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Affiliation(s)
- Jan Yperman
- Limburgs Universitair Centrum, Laboratory of Inorganic and Physical Chemistry, B-3590 Diepenbeek, Belgium
| | - Robert Carleer
- Limburgs Universitair Centrum, Laboratory of Inorganic and Physical Chemistry, B-3590 Diepenbeek, Belgium
| | - Guy Reggers
- Limburgs Universitair Centrum, Laboratory of Inorganic and Physical Chemistry, B-3590 Diepenbeek, Belgium
| | - Jules Mullens
- Limburgs Universitair Centrum, Laboratory of Inorganic and Physical Chemistry, B-3590 Diepenbeek, Belgium
| | - Lucien Van Poucke
- Limburgs Universitair Centrum, Laboratory of Inorganic and Physical Chemistry, B-3590 Diepenbeek, Belgium
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Claes M, Le Q, Kesters E, Lux M, Urionabarrenetxea A, Vereecke G, Mertens P, Carleer R, Adriaensens P. All-Wet Strip Approaches for Post-Etch Photoresist Layers After Low-K Patterning. ACTA ACUST UNITED AC 2019. [DOI: 10.1149/1.2779377] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Jambon I, Thijs S, Torres-Farradá G, Rineau F, Weyens N, Carleer R, Samyn P, Vangronsveld J. Fenton-Mediated Biodegradation of Chlorendic Acid - A Highly Chlorinated Organic Pollutant - By Fungi Isolated From a Polluted Site. Front Microbiol 2019; 10:1892. [PMID: 31474967 PMCID: PMC6702520 DOI: 10.3389/fmicb.2019.01892] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 07/31/2019] [Indexed: 11/13/2022] Open
Abstract
Chlorendic acid is a recalcitrant, highly chlorinated organic pollutant for which no microbial degrader has yet been identified. To address this knowledge gap, fungi were isolated from bulk soil, rhizosphere, and roots of the common bent (Agrostis capillaris) and the hybrid poplar [Populus deltoides × (Populus trichocarpa × P. deltoides) cv. Grimminge], both of which grow on a chlorendic acid polluted site in Belgium. Isolates were taxonomically identified and phenotypically screened for chlorendic acid degradation. Several fungal isolates could degrade chlorendic acid in liquid media up to 45%. The chlorendic acid degrading fungal isolates produced higher levels of hydroxyl radicals when exposed to the pollutant when compared to non-exposed controls, suggesting that the oxidative degradation of chlorendic acid occurs through production of Fenton-mediated hydroxyl radicals. In addition, the isolated Ascomycete Penicillium sp. 1D-2a degraded 58% of the original chlorendic acid concentration in the soil after 28 days. This study demonstrates that the presence of fungi in a chlorendic acid polluted soil can degrade this highly chlorinated organic pollutant. These results indicate that recalcitrant, seemingly non-biologically degradable organic pollutants, such as chlorendic acid, can be remediated by using bioremediation, which opens new perspectives for in situ bioremediation.
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Affiliation(s)
- Inge Jambon
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Sofie Thijs
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Giselle Torres-Farradá
- Department of Microbiology and Virology, Faculty of Biology, University of Havana, La Habana, Cuba
| | - François Rineau
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Nele Weyens
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Robert Carleer
- Institute for Materials Research, Hasselt University, Diepenbeek, Belgium
| | - Pieter Samyn
- Institute for Materials Research, Hasselt University, Diepenbeek, Belgium
| | - Jaco Vangronsveld
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
- Department of Plant Physiology, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Lublin, Poland
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Torres-Farradá G, Manzano-León AM, Rineau F, Ramos Leal M, Thijs S, Jambon I, Put J, Czech J, Guerra Rivera G, Carleer R, Vangronsveld J. Biodegradation of polycyclic aromatic hydrocarbons by native Ganoderma sp. strains: identification of metabolites and proposed degradation pathways. Appl Microbiol Biotechnol 2019; 103:7203-7215. [PMID: 31256229 DOI: 10.1007/s00253-019-09968-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 06/04/2019] [Accepted: 06/05/2019] [Indexed: 01/28/2023]
Abstract
Since polycyclic aromatic hydrocarbons (PAHs) are mutagenic, teratogenic, and carcinogenic, they are of considerable environmental concern. A biotechnological approach to remove such compounds from polluted ecosystems could be based on the use of white-rot fungi (WRF). The potential of well-adapted indigenous Ganoderma strains to degrade PAHs remains underexplored. Seven native Ganoderma sp. strains with capacity to produce high levels of laccase enzymes and to degrade synthetic dyes were investigated for their degradation potential of PAHs. The crude enzymatic extracts produced by Ganoderma strains differentially degraded the PAHs assayed (naphthalene 34-73%, phenanthrene 9-67%, fluorene 11-64%). Ganoderma sp. UH-M was the most promising strain for the degradation of PAHs without the addition of redox mediators. The PAH oxidation performed by the extracellular enzymes produced more polar and soluble metabolites such as benzoic acid, catechol, phthalic and protocatechuic acids, allowing us to propose degradation pathways of these PAHs. This is the first study in which breakdown intermediates and degradation pathways of PAHs by a native strain of Ganoderma genus were determined. The treatment of PAHs with the biomass of this fungal strain enhanced the degradation of the three PAHs. The laccase enzymes played an important role in the degradation of these compounds; however, the role of peroxidases cannot be excluded. Ganoderma sp. UH-M is a promising candidate for the bioremediation of ecosystems polluted with PAHs.
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Affiliation(s)
- Giselle Torres-Farradá
- Department of Microbiology and Virology, Faculty of Biology, University of Havana, Calle 25 No. 455. Vedado, Havana, Cuba.
| | - Ana M Manzano-León
- Department of Plant Phytopathology, Research Institute for Tropical Fruit Trees (IIFT), Ave 7ma No. 3005, Playa, Havana, Cuba
| | - François Rineau
- Centre for Environmental Sciences, Hasselt University, Agoralaan, Building D, Diepenbeek, B-3590, Hasselt, Belgium
| | - Miguel Ramos Leal
- Department of Plant Phytopathology, Research Institute for Tropical Fruit Trees (IIFT), Ave 7ma No. 3005, Playa, Havana, Cuba
| | - Sofie Thijs
- Centre for Environmental Sciences, Hasselt University, Agoralaan, Building D, Diepenbeek, B-3590, Hasselt, Belgium
| | - Inge Jambon
- Centre for Environmental Sciences, Hasselt University, Agoralaan, Building D, Diepenbeek, B-3590, Hasselt, Belgium
| | - Jenny Put
- Institute for Materials Research, Hasselt University, Agoralaan, Building D, Diepenbeek, B-3590, Hasselt, Belgium
| | - Jan Czech
- Institute for Materials Research, Hasselt University, Agoralaan, Building D, Diepenbeek, B-3590, Hasselt, Belgium
| | - Gilda Guerra Rivera
- Department of Microbiology and Virology, Faculty of Biology, University of Havana, Calle 25 No. 455. Vedado, Havana, Cuba
| | - Robert Carleer
- Institute for Materials Research, Hasselt University, Agoralaan, Building D, Diepenbeek, B-3590, Hasselt, Belgium
| | - Jaco Vangronsveld
- Centre for Environmental Sciences, Hasselt University, Agoralaan, Building D, Diepenbeek, B-3590, Hasselt, Belgium
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Lemoine L, Thijssen E, Carleer R, Geboers K, Sugarbaker P, van der Speeten K. Body surface area-based vs concentration-based perioperative intraperitoneal chemotherapy after optimal cytoreductive surgery in colorectal peritoneal surface malignancy treatment: COBOX trial. J Surg Oncol 2019; 119:999-1010. [PMID: 30838646 DOI: 10.1002/jso.25437] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 01/15/2019] [Accepted: 02/18/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND OBJECTIVES Cytoreductive surgery (CRS) and hyperthermic intraperitoneal perioperative chemotherapy (HIPEC) are the standard of care for patients diagnosed with colorectal peritoneal surface malignancy (PSM). Despite a clearly defined standardization of CRS, a large variety of HIPEC modalities are still used in clinical practice. METHODS Body surface area (BSA)- and concentration-based HIPEC protocols were clinically and pharmacologically evaluated in a randomized phase III clinical pilot trial. Oxaliplatin dose was 460 mg/m 2 (BSA-based) in 2 L/m 2 carrier solution (concentration-based). Platinum quantification was performed using a validated inductively coupled plasma mass spectrometry method. Three-month morbidity, mortality, and health-related quality of life (HRQOL) were assessed. RESULTS Thirty-one patients were randomized to either BSA- or concentration-based HIPEC. Toxicity and efficacy were higher (P < 0.001) in patients receiving concentration-based HIPEC. There was no difference in pharmacologic advantage between the two groups. A higher drug concentration in the tumor nodule at the end of HIPEC was found in the HIPEC-concentration group. There was no difference in major morbidity and mortality between the treatment groups. HRQOL was decreased 3 months postoperatively in the HIPEC-concentration group. CONCLUSION Concentration-based chemotherapy delivers the drug in the most standardized way to the tumor nodule, resulting in increasing drug concentrations in the tumor nodule without increasing major morbidity.
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Affiliation(s)
- Lieselotte Lemoine
- Department of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium.,Department of Surgical Oncology, Ziekenhuis Oost-Limburg, Genk, Belgium
| | - Elsy Thijssen
- Applied and Analytical Chemistry, Institute for Materials Research, Hasselt University, Diepenbeek, Belgium
| | - Robert Carleer
- Applied and Analytical Chemistry, Institute for Materials Research, Hasselt University, Diepenbeek, Belgium
| | - Karlien Geboers
- Department of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium
| | - Paul Sugarbaker
- Center for Gastrointestinal Malignancies, MedStar Washington Hospital Center, Washington, District of Columbia
| | - Kurt van der Speeten
- Department of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium.,Department of Surgical Oncology, Ziekenhuis Oost-Limburg, Genk, Belgium
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12
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Lemoine L, Thijssen E, Carleer R, Cops J, Lemmens V, Eyken PV, Sugarbaker P, der Speeten KV. Body surface area-based versus concentration-based intraperitoneal perioperative chemotherapy in a rat model of colorectal peritoneal surface malignancy: pharmacologic guidance towards standardization. Oncotarget 2019; 10:1407-1424. [PMID: 30858926 PMCID: PMC6402719 DOI: 10.18632/oncotarget.26667] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Accepted: 01/28/2019] [Indexed: 01/22/2023] Open
Abstract
Worldwide, cytoreductive surgery (CRS) and hyperthermic intraperitoneal perioperative chemotherapy (HIPEC) are used in current clinical practice for colorectal peritoneal surface malignancy (PSM) treatment. Although, there is an acknowledged standardization regarding the CRS, we are still lacking a much-needed standardization amongst the various intraperitoneal (IP) chemotherapy protocols, including the HIPEC dosing regimen. We should rely on pharmacologic evidence building towards such a standardization. The current IP chemotherapy dosing regimens can be divided into body surface area (BSA)-based and concentration-based protocols. A preclinical animal study was designed to evaluate pharmacologic advantage (PA), efficacy and survival. WAG/Rij rats were IP injected with the rat colonic carcinoma cell line CC-531. Animals were randomized into three groups: CRS alone or CRS combined with oxaliplatin-based HIPEC (either BSA- or concentration-based). There was no difference in PA between the two groups (p=0.283). Platinum concentration in the tumor nodule was significantly higher in the concentration-based group (p<0.001). Median survival did not differ between the treatment groups (p<0.250). This preclinical study, in contrast to previous thinking, clearly demonstrates that the PA does not provide any information about the true efficacy of the drug and emphasizes the importance of the tumor nodule as pharmacologic endpoint.
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Affiliation(s)
- Lieselotte Lemoine
- Department of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium.,Department of Surgical Oncology, Ziekenhuis Oost-Limburg, Genk, Belgium
| | - Elsy Thijssen
- Department of Applied and Analytical Chemistry, Institute for Materials Research (IMO), Hasselt University, Diepenbeek, Belgium
| | - Robert Carleer
- Department of Applied and Analytical Chemistry, Institute for Materials Research (IMO), Hasselt University, Diepenbeek, Belgium
| | - Jirka Cops
- Department of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium.,Department of Medicine and Life Sciences, Biomedical Research Institute, Rehabilitation Research Center, Hasselt University, Hasselt, Belgium
| | - Veerle Lemmens
- Department of Medicine and Life Sciences, Dynamic Bioimaging Laboratory, Advanced Optical Microscopy Centre, Biomedical Research Institute (BIOMED), Hasselt University, Hasselt, Belgium
| | - Peter Van Eyken
- Department of Pathology, Ziekenhuis Oost-Limburg, Genk, Belgium
| | - Paul Sugarbaker
- Center for Gastrointestinal Malignancies, MedStar Washington Hospital Center, Washington, DC, USA
| | - Kurt Van der Speeten
- Department of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium.,Department of Surgical Oncology, Ziekenhuis Oost-Limburg, Genk, Belgium
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13
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Leynen N, Van Belleghem FG, Wouters A, Bove H, Ploem JP, Thijssen E, Langie SA, Carleer R, Ameloot M, Artois T, Smeets K. In vivo Toxicity Assessment of Silver Nanoparticles in Homeostatic versus Regenerating Planarians. Nanotoxicology 2019; 13:476-491. [DOI: 10.1080/17435390.2018.1553252] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Nathalie Leynen
- Centre for Environmental Sciences, Zoology, Biodiversity and Toxicology, Hasselt University, Hasselt, Belgium
| | - Frank G.A.J Van Belleghem
- Centre for Environmental Sciences, Zoology, Biodiversity and Toxicology, Hasselt University, Hasselt, Belgium
| | - Annelies Wouters
- Centre for Environmental Sciences, Zoology, Biodiversity and Toxicology, Hasselt University, Hasselt, Belgium
| | - Hannelore Bove
- Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Jan-Pieter Ploem
- Centre for Environmental Sciences, Zoology, Biodiversity and Toxicology, Hasselt University, Hasselt, Belgium
| | - Elsy Thijssen
- Applied and Analytical Chemistry, Hasselt University, Diepenbeek, Belgium
| | - Sabine A.S. Langie
- Centre for Environmental Sciences, Zoology, Biodiversity and Toxicology, Hasselt University, Hasselt, Belgium
- VITO NV, Mol, Belgium
| | - Robert Carleer
- Applied and Analytical Chemistry, Hasselt University, Diepenbeek, Belgium
| | - Marcel Ameloot
- Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Tom Artois
- Centre for Environmental Sciences, Zoology, Biodiversity and Toxicology, Hasselt University, Hasselt, Belgium
| | - Karen Smeets
- Centre for Environmental Sciences, Zoology, Biodiversity and Toxicology, Hasselt University, Hasselt, Belgium
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14
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Gu Y, Yperman J, Carleer R, D'Haen J, Maggen J, Vanderheyden S, Vanreppelen K, Garcia RM. Adsorption and photocatalytic removal of Ibuprofen by activated carbon impregnated with TiO 2 by UV-Vis monitoring. Chemosphere 2019; 217:724-731. [PMID: 30448752 DOI: 10.1016/j.chemosphere.2018.11.068] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [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: 07/01/2018] [Revised: 11/06/2018] [Accepted: 11/10/2018] [Indexed: 06/09/2023]
Abstract
The removal of Ibuprofen was investigated by activated carbon impregnated with TiO2. Emphasis was given on the effect of different parameters, such as composite type, initial Ibuprofen concentration (5-25 mg/L), temperature (22-28 °C) and pH (acidic and alkaline solution). The experiment was carried out in a self-made tubular flow reactor, with one 15 W monochromatic UV lamp (254 nm). The composite AC90T10 gives the highest removal degree of 92% of Ibuprofen solution under UV light within 4 h, due to synergy of adsorption and photodegradation. It was found that weight ratio of composite/Ibuprofen has limited effect on the removal degree within the concentration range (5-25 mg/L), but reaction time under UV light (4 h) and pH (acidic solution) are very important. The kinetic experimental data obtained at pH 4.3 at 25 °C on different composites were fitted to pseudo-first, pseudo-second and Elovich models, obtaining a high accuracy based on R2 values. From the results, composites of granular activated carbon and TiO2 can enhance removal of Ibuprofen effectively, making recycle process much easier and less costly, which can be a promising method in future water treatment.
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Affiliation(s)
- Ying Gu
- Zhejiang Ocean University, Zhoushan 316022, China.
| | - Jan Yperman
- Research Group of Applied and Analytical Chemistry, Hasselt University, Diepenbeek, Belgium
| | - Robert Carleer
- Research Group of Applied and Analytical Chemistry, Hasselt University, Diepenbeek, Belgium
| | - Jan D'Haen
- Institute for Materials Research (IMO), Hasselt University, Diepenbeek, Belgium; IMOMEC, IMEC vzw, Diepenbeek, Belgium
| | - Jens Maggen
- Research Group of Applied and Analytical Chemistry, Hasselt University, Diepenbeek, Belgium
| | - Sara Vanderheyden
- Research Group of Applied and Analytical Chemistry, Hasselt University, Diepenbeek, Belgium
| | - Kenny Vanreppelen
- Research Group of Applied and Analytical Chemistry, Hasselt University, Diepenbeek, Belgium
| | - Roberto Machado Garcia
- Chemistry Department, Faculty of Natural and Exact Sciences, Universidad de Oriente, Cuba
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15
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Samyn P, Vandamme D, Adriaensens P, Carleer R. Surface Chemistry of Oil-Filled Organic Nanoparticle Coated Papers Analyzed Using Micro-Raman Mapping. Appl Spectrosc 2019; 73:67-77. [PMID: 30226076 DOI: 10.1177/0003702818804864] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Raman spectroscopy and micro-Raman mapping have been used to study the distribution of different chemical components at the surface of coated papers. The paper coatings contain organic nanoparticles with a structure of poly(styrene- co-maleimide) and encapsulated vegetable oils. Raman spectroscopy is able to differentiate between various types of oil, i.e., polyunsaturated, monounsaturated, or saturated, and indicates that the degree of imidization and reactivity of the oil (amount of free oil) complement each other. The surface mapping over large areas (5 × 5 mm2) illustrates good homogeneity of the coating layer and even surface coverage. The imide and oil are homogeneously distributed within the coating itself without a tendency for agglomeration. The covered areas of imide and oil mostly overlap for polyunsaturated oils, while larger amounts of oil occur outside the imide zones for monounsaturated and saturated oils. The latter indicates that the oil is partly "free" within the coating and acts as a continuous binder phase. The surface mapping over smaller areas (1 × 1 mm2) shows the coating and cellulose covered areas are complementary. The surface maps confirm that interaction between the coating and paper substrate happens through hydrogen bonding. Heterogeneities in the coating are due to the presence of remaining ammonolyzed maleic anhydride precursors forming amic acid moieties. The organic phase, oil phase, and cellulose substrate can also be differentiated by principal component analysis of the surface maps.
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Affiliation(s)
- Pieter Samyn
- University of Hasselt, Institute for Materials Research (IMO-IMOMEC), Applied and Analytical Chemistry, Diepenbeek, Belgium
| | - Dries Vandamme
- University of Hasselt, Institute for Materials Research (IMO-IMOMEC), Applied and Analytical Chemistry, Diepenbeek, Belgium
| | - Peter Adriaensens
- University of Hasselt, Institute for Materials Research (IMO-IMOMEC), Applied and Analytical Chemistry, Diepenbeek, Belgium
| | - Robert Carleer
- University of Hasselt, Institute for Materials Research (IMO-IMOMEC), Applied and Analytical Chemistry, Diepenbeek, Belgium
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16
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Lenaers M, Reyns W, Czech J, Carleer R, Basak I, Deferme W, Krupinska P, Yildiz T, Saro S, Remans T, Vangronsveld J, De Laender F, Rineau F. Links Between Heathland Fungal Biomass Mineralization, Melanization, and Hydrophobicity. Microb Ecol 2018; 76:762-770. [PMID: 29492595 DOI: 10.1007/s00248-018-1167-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 12/08/2017] [Accepted: 02/19/2018] [Indexed: 06/08/2023]
Abstract
Comprehending the decomposition process is crucial for our understanding of the mechanisms of carbon (C) sequestration in soils. The decomposition of plant biomass has been extensively studied. It revealed that extrinsic biomass properties that restrict its access to decomposers influence decomposition more than intrinsic ones that are only related to its chemical structure. Fungal biomass has been much less investigated, even though it contributes to a large extent to soil organic matter, and is characterized by specific biochemical properties. In this study, we investigated the extent to which decomposition of heathland fungal biomass was affected by its hydrophobicity (extrinsic property) and melanin content (intrinsic property). We hypothesized that, as for plant biomass, hydrophobicity would have a greater impact on decomposition than melanin content. Mineralization was determined as the mineralization of soil organic carbon (SOC) into CO2 by headspace GC/MS after inoculation by a heathland soil microbial community. Results show that decomposition was not affected by hydrophobicity, but was negatively correlated with melanin content. We argue that it may indicate that either melanin content is both an intrinsic and extrinsic property, or that some soil decomposers evolved the ability to use surfactants to access to hydrophobic biomass. In the latter case, biomass hydrophobicity should not be considered as a crucial extrinsic factor. We also explored the ecology of decomposition, melanin content, and hydrophobicity, among heathland soil fungal guilds. Ascomycete black yeasts had the highest melanin content, and hyaline Basidiomycete yeasts the lowest. Hydrophobicity was an all-or-nothing trait, with most isolates being hydrophobic.
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Affiliation(s)
- Mathias Lenaers
- Centre for Environmental Sciences, Research Group Environmental Biology, Hasselt University, Agoralaan Building D, B-3590, Diepenbeek, Belgium
| | - Wouter Reyns
- Centre for Environmental Sciences, Research Group Environmental Biology, Hasselt University, Agoralaan Building D, B-3590, Diepenbeek, Belgium
- Research Unit in Environmental and Evolutionary Biology, University of Namur, Namur, Belgium
| | - Jan Czech
- Centre for Environmental Sciences, Research Group of Applied and Analytical Chemistry, Hasselt University, Agoralaan Building D, B-3590, Diepenbeek, Belgium
| | - Robert Carleer
- Centre for Environmental Sciences, Research Group of Applied and Analytical Chemistry, Hasselt University, Agoralaan Building D, B-3590, Diepenbeek, Belgium
| | - Indranil Basak
- Institute for Materials Research IMO-IMOMEC, Hasselt University, Diepenbeek, Belgium
| | - Wim Deferme
- Institute for Materials Research IMO-IMOMEC, Hasselt University, Diepenbeek, Belgium
| | | | - Talha Yildiz
- PXL, Agoralaan Building D, B-3590, Diepenbeek, Belgium
| | - Sherilyn Saro
- PXL, Agoralaan Building D, B-3590, Diepenbeek, Belgium
| | - Tony Remans
- PXL, Agoralaan Building D, B-3590, Diepenbeek, Belgium
| | - Jaco Vangronsveld
- Centre for Environmental Sciences, Research Group Environmental Biology, Hasselt University, Agoralaan Building D, B-3590, Diepenbeek, Belgium
| | - Frederik De Laender
- Research Unit in Environmental and Evolutionary Biology, University of Namur, Namur, Belgium
| | - Francois Rineau
- Centre for Environmental Sciences, Research Group Environmental Biology, Hasselt University, Agoralaan Building D, B-3590, Diepenbeek, Belgium.
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17
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Thijs S, Sillen W, Truyens S, Beckers B, van Hamme J, van Dillewijn P, Samyn P, Carleer R, Weyens N, Vangronsveld J. The Sycamore Maple Bacterial Culture Collection From a TNT Polluted Site Shows Novel Plant-Growth Promoting and Explosives Degrading Bacteria. Front Plant Sci 2018; 9:1134. [PMID: 30123233 PMCID: PMC6085565 DOI: 10.3389/fpls.2018.01134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 07/13/2018] [Indexed: 05/23/2023]
Abstract
Military activities have worldwide introduced toxic explosives into the environment with considerable effects on soil and plant-associated microbiota. Fortunately, these microorganisms, and their collective metabolic activities, can be harnessed for site restoration via in situ phytoremediation. We characterized the bacterial communities inhabiting the bulk soil and rhizosphere of sycamore maple (Acer pseudoplatanus) in two chronically 2,4,6-trinitrotoluene (TNT) polluted soils. Three hundred strains were isolated, purified and characterized, a majority of which showed multiple plant growth promoting (PGP) traits. Several isolates showed high nitroreductase enzyme activity and concurrent TNT-transformation. A 12-member bacterial consortium, comprising selected TNT-detoxifying and rhizobacterial strains, significantly enhanced TNT removal from soil compared to non-inoculated plants, increased root and shoot weight, and the plants were less stressed than the un-inoculated plants as estimated by the responses of antioxidative enzymes. The sycamore maple tree (SYCAM) culture collection is a significant resource of plant-associated strains with multiple PGP and catalytic properties, available for further genetic and phenotypic discovery and use in field applications.
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Affiliation(s)
- Sofie Thijs
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Wouter Sillen
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Sascha Truyens
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Bram Beckers
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Jonathan van Hamme
- Department of Biological Sciences, Thompson Rivers University, Kamloops, BC, Canada
| | - Pieter van Dillewijn
- Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, Granada, Spain
| | - Pieter Samyn
- Applied and Analytical Chemistry, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Robert Carleer
- Applied and Analytical Chemistry, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Nele Weyens
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Jaco Vangronsveld
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
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18
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Vanderheyden SRH, Yperman J, Carleer R, Schreurs S. Enhanced cesium removal from real matrices by nickel-hexacyanoferrate modified activated carbons. Chemosphere 2018; 202:569-575. [PMID: 29597174 DOI: 10.1016/j.chemosphere.2018.03.096] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 10/02/2017] [Revised: 03/12/2018] [Accepted: 03/14/2018] [Indexed: 06/08/2023]
Abstract
After nuclear disasters, radioactive cesium partitions to soils and surface water, where it decays slowly. Hexacyanoferrates (HCFs) have excellent cesium removal properties but their structure is typically powdery. Many carrier materials, such as biomass or magnetic particles, have been used to provide a suitable substrate for HCFs that can be used in filters. This research uses the sorption properties of activated carbon (AC) to incorporate Ni-HCF, resulting in good structural properties of the hybrid material. These HCF-modified ACs show drastically improved sorption properties towards Cs after one, two and three HCF impregnation cycles. The activated carbon from brewer's spent grain with one modification cycle removes more than 80% of 1 mg L-1 Cs in a sea water solution and more than 98% of 1 mg L-1 Cs from surface water at a low AC dosage (0.5 g L-1). Iron and nickel leaching is studied and found to be dependent on the type of modified AC used and the leaching solution. Iron leaching can be problematic in surface and seawater, whereas nickel leaching is especially pronounced in seawater.
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Affiliation(s)
- S R H Vanderheyden
- Hasselt University, Centre for Environmental Sciences, Research Group of Applied and Analytical Chemistry, Agoralaan - Building D, 3590, Diepenbeek, Belgium.
| | - J Yperman
- Hasselt University, Centre for Environmental Sciences, Research Group of Applied and Analytical Chemistry, Agoralaan - Building D, 3590, Diepenbeek, Belgium.
| | - R Carleer
- Hasselt University, Centre for Environmental Sciences, Research Group of Applied and Analytical Chemistry, Agoralaan - Building D, 3590, Diepenbeek, Belgium.
| | - S Schreurs
- Hasselt University, Centre for Environmental Sciences, Research Group of Nuclear Technology, Agoralaan - Building H, 3590, Diepenbeek, Belgium.
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19
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Lemoine L, Thijssen E, Noben JP, Adriaensens P, Carleer R, Speeten KVD. A validated inductively coupled plasma mass spectrometry (ICP-MS) method for the quantification of total platinum content in plasma, plasma ultrafiltrate, urine and peritoneal fluid. J Pharm Biomed Anal 2018; 152:39-46. [DOI: 10.1016/j.jpba.2018.01.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 01/16/2018] [Accepted: 01/17/2018] [Indexed: 01/12/2023]
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20
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Maes C, Luyten W, Herremans G, Peeters R, Carleer R, Buntinx M. Recent Updates on the Barrier Properties of Ethylene Vinyl Alcohol Copolymer (EVOH): A Review. POLYM REV 2018. [DOI: 10.1080/15583724.2017.1394323] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Caroline Maes
- Kuraray–Eval Europe NV, Haven 1053 Nieuwe Weg 1, Bus 10, Zwijndrecht, Belgium
- Hasselt University, Packaging Technology Center IMO-IMOMEC, Wetenschapspark 27, Diepenbeek, Belgium
| | - Wout Luyten
- Kuraray–Eval Europe NV, Haven 1053 Nieuwe Weg 1, Bus 10, Zwijndrecht, Belgium
| | - Geert Herremans
- Kuraray–Eval Europe NV, Haven 1053 Nieuwe Weg 1, Bus 10, Zwijndrecht, Belgium
| | - Roos Peeters
- Hasselt University, Packaging Technology Center IMO-IMOMEC, Wetenschapspark 27, Diepenbeek, Belgium
| | - Robert Carleer
- Hasselt University, Applied and Analytical Chemistry IMO-IMOMEC, Agoralaan Building D, Diepenbeek, Belgium
| | - Mieke Buntinx
- Hasselt University, Packaging Technology Center IMO-IMOMEC, Wetenschapspark 27, Diepenbeek, Belgium
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21
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Puente Torres J, Crespo Sariol H, Yperman J, Brito Sauvanell Á, Carleer R, Navarro Campa J. A novel X-ray radiography approach for the characterization of granular activated carbons used in the rum production. J Anal Sci Technol 2018. [DOI: 10.1186/s40543-017-0133-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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22
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Kumar Pramanik S, Losada-Pérez P, Reekmans G, Carleer R, D’Olieslaeger M, Vanderzande D, Adriaensens P, Ethirajan A. Physicochemical characterizations of functional hybrid liposomal nanocarriers formed using photo-sensitive lipids. Sci Rep 2017; 7:46257. [PMID: 28406235 PMCID: PMC5390264 DOI: 10.1038/srep46257] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 12/13/2016] [Accepted: 03/13/2017] [Indexed: 12/24/2022] Open
Abstract
With recent advances in the field of diagnostics and theranostics, liposomal technology has secured a fortified position as a potential nanocarrier. Specifically, radiation/photo-sensitive liposomes containing photo-polymerizable cross-linking lipids are intriguing as they can impart the vesicles with highly interesting properties such as response to stimulus and improved shell stability. In this work, 1,2-bis(10,12-tricosadiynoyl)-sn-glycero-3-phosphoethanolamine (DTPE) is used as a photo-polymerizable lipid to form functional hybrid-liposomes as it can form intermolecular cross-linking through the diacetylenic groups. Hybrid-liposomes were formulated using mixtures of DTPE and saturated lipids of different chain lengths (dipalmitoylphosphatidylcholine (DPPC) and dimirystoilphosphatidylcholine (DMPC)) at different molar ratios. The physico-chemical characteristics of the liposomes has been studied before and after UV irradiation using a combination of techniques: DSC, QCM-D and solid-state NMR. The results signify the importance of a subtle modification in alkyl chain length on the phase behavior of the hybrid-liposomes and on the degree of crosslinking in the shell.
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Affiliation(s)
- Sumit Kumar Pramanik
- Institute for Materials Research (IMO), Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
- IMEC, associated lab IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - Patricia Losada-Pérez
- Institute for Materials Research (IMO), Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
- IMEC, associated lab IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - Gunter Reekmans
- Institute for Materials Research (IMO), Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
- IMEC, associated lab IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - Robert Carleer
- Institute for Materials Research (IMO), Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
- IMEC, associated lab IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - Marc D’Olieslaeger
- Institute for Materials Research (IMO), Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
- IMEC, associated lab IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - Dirk Vanderzande
- Institute for Materials Research (IMO), Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
- IMEC, associated lab IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - Peter Adriaensens
- Institute for Materials Research (IMO), Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
- IMEC, associated lab IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - Anitha Ethirajan
- Institute for Materials Research (IMO), Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
- IMEC, associated lab IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
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23
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Maino G, Carleer R, Marchal W, Bonneux G, Hardy A, Van Bael MK. Remarkable lowering in the synthesis temperature of LiMn2O4via citrate solution–gel synthesis facilitated by ethanol. Dalton Trans 2017; 46:14934-14946. [DOI: 10.1039/c7dt03100a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Low temperature synthesis routes for cathode materials, such as LMO, are currently very important. Here, through an elaborate study on the chemistry behind the precursor and EtOH interaction, the thermal budget was drastically reduced at 250 °C.
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Affiliation(s)
- G. Maino
- UHasselt – Hasselt University
- Institute for Materials Research (IMO-IMOMEC)
- Inorganic and Physical Chemistry
- 3590 Diepenbeek
- Belgium
| | - R. Carleer
- Hasselt University
- Institute for Materials Research
- Applied and Analytical Chemistry
- 3590 Diepenbeek
- Belgium
| | - W. Marchal
- UHasselt – Hasselt University
- Institute for Materials Research (IMO-IMOMEC)
- Inorganic and Physical Chemistry
- 3590 Diepenbeek
- Belgium
| | - G. Bonneux
- UHasselt – Hasselt University
- Institute for Materials Research (IMO-IMOMEC)
- Inorganic and Physical Chemistry
- 3590 Diepenbeek
- Belgium
| | - A. Hardy
- UHasselt – Hasselt University
- Institute for Materials Research (IMO-IMOMEC)
- Inorganic and Physical Chemistry
- 3590 Diepenbeek
- Belgium
| | - M. K. Van Bael
- UHasselt – Hasselt University
- Institute for Materials Research (IMO-IMOMEC)
- Inorganic and Physical Chemistry
- 3590 Diepenbeek
- Belgium
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24
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Tassi M, Roevens A, Reekmans G, Vanhamel M, Meynen V, D’Haen J, Adriaensens P, Carleer R. A detailed investigation of the microwave assisted phenylphosphonic acid modification of P25 TiO2. ADV POWDER TECHNOL 2017. [DOI: 10.1016/j.apt.2016.09.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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Tassi M, Reekmans G, Carleer R, Adriaensens P. Fully quantitative description of hybrid TiO2 nanoparticles by means of solid state (31)P NMR. Solid State Nucl Magn Reson 2016; 78:50-55. [PMID: 27497944 DOI: 10.1016/j.ssnmr.2016.07.001] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 07/06/2016] [Accepted: 07/11/2016] [Indexed: 06/06/2023]
Abstract
For the first time, an absolute quantification of hybrid materials obtained from the reaction of phenylphosphonic acid (PPA) with TiO2 nanoparticles under different reaction conditions is reported. Next to the amount of PPA involved in grafting to the TiO2 nanoparticles, also the PPA included in titaniumphenylphosphonate crystallites is described quantitatively. The quantitative analysis is based on solid state (31)P MAS NMR and is further applied to evaluate the stability of the resulting hybrid materials towards hydrolysis and organic solvent exposure.
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Affiliation(s)
- Marco Tassi
- Applied and Analytical Chemistry, Institute for Materials Research (IMO), Hasselt University, Agoralaan 1 - Building D, B-3590 Diepenbeek, Belgium.
| | - Gunter Reekmans
- Applied and Analytical Chemistry, Institute for Materials Research (IMO), Hasselt University, Agoralaan 1 - Building D, B-3590 Diepenbeek, Belgium
| | - Robert Carleer
- Applied and Analytical Chemistry, Institute for Materials Research (IMO), Hasselt University, Agoralaan 1 - Building D, B-3590 Diepenbeek, Belgium.
| | - Peter Adriaensens
- Applied and Analytical Chemistry, Institute for Materials Research (IMO), Hasselt University, Agoralaan 1 - Building D, B-3590 Diepenbeek, Belgium
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Crespo Sariol H, Yperman J, Brito Sauvanell Á, Carleer R, Campa JN, Gryglewicz G. A novel acoustic approach for the characterization of granular activated carbons used in the rum production. Ultrasonics 2016; 70:53-63. [PMID: 27135186 DOI: 10.1016/j.ultras.2016.03.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 03/03/2016] [Accepted: 03/29/2016] [Indexed: 06/05/2023]
Abstract
Acoustic analysis and sound patterns recognition techniques have been widely used in many branches of science, however; almost none focused on the characterization of granular activated carbon. A new methodology has been developed in order to characterize activated carbon based on the dynamic analysis in audible spectra of the sound's relative amplitude power produced by water flooded on granular activated carbon. A home-build recording set-up and management of acoustic measurements have been presented and correlated with the results of porous structure of carbons characterized by N2 adsorption. Five samples of granular activated carbons used in the rum production of different exhausted level have been evaluated by both methods. Parameters as the BET surface area and total pore volume showed a satisfactory correlation with acoustic measurement data when the signal is processed at 1000Hz. Three frequencies components of the produced sound were analyzed and related with the porous characteristics. The found relationship gives the possibility to predict and calculate textural parameters of granular activated carbons applying the acoustic technique. This methodology approach opens possibilities in using acoustic experiments for the characterization of high-porosity materials and to determine their exhausted level.
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Affiliation(s)
- Harold Crespo Sariol
- Faculty of Chemical Engineering, Energetic Efficiency Center, Universidad de Oriente, Santiago de Cuba, Cuba.
| | - Jan Yperman
- Research Group of Applied and Analytical Chemistry, Hasselt University, Agoralaan Building D, Diepenbeek, Belgium.
| | - Ángel Brito Sauvanell
- Faculty of Chemical Engineering, Energetic Efficiency Center, Universidad de Oriente, Santiago de Cuba, Cuba.
| | - Robert Carleer
- Research Group of Applied and Analytical Chemistry, Hasselt University, Agoralaan Building D, Diepenbeek, Belgium.
| | | | - Grazyna Gryglewicz
- Department of Polymer and Carbonaceous Material, Faculty of Chemistry, Wroclaw University of Technology, Gdanska 7/9, 50-344 Wroclaw, Poland.
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Smets K, De Jong M, Lupul I, Gryglewicz G, Schreurs S, Carleer R, Yperman J. Rapeseed and Raspberry Seed Cakes as Inexpensive Raw Materials in the Production of Activated Carbon by Physical Activation: Effect of Activation Conditions on Textural and Phenol Adsorption Characteristics. Materials (Basel) 2016; 9:ma9070565. [PMID: 28773684 PMCID: PMC5456895 DOI: 10.3390/ma9070565] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 06/13/2016] [Accepted: 07/04/2016] [Indexed: 11/19/2022]
Abstract
The production of activated carbons (ACs) from rapeseed cake and raspberry seed cake using slow pyrolysis followed by physical activation of the obtained solid residues is the topic of this study. The effect of activation temperature (850, 900 and 950 °C), activation time (30, 60, 90 and 120 min) and agent (steam and CO2) on the textural characteristics of the ACs is investigated by N2 adsorption. In general, higher activation temperatures and longer activation times increase the BET specific surface area and the porosity of the ACs, regardless of the activation agent or raw material. Steam is more reactive than CO2 in terms of pore development, especially in the case of raspberry seed cake. The performance of the ACs in liquid adsorption is evaluated by batch phenol adsorption tests. Experimental data are best fitted by the Freundlich isotherm model. Based on total yield, textural characteristics and phenol adsorption, steam activation at 900 °C for 90 min and CO2 activation at 900 °C for 120 min are found as the best activation conditions. Raspberry seed cake turns out to be a better raw material than rapeseed cake. Moreover, AC from raspberry seed cake produced by steam activation at 900 °C for 90 min performs as well as commercial AC (Norit GAC 1240) in phenol adsorption. The adsorption kinetics of the selected ACs are best fitted by the pseudo-second-order model.
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Affiliation(s)
- Koen Smets
- Research Group of Applied and Analytical Chemistry, CMK, Hasselt University, Agoralaan Gebouw D, Diepenbeek 3590, Belgium.
| | - Mats De Jong
- Research Group of Applied and Analytical Chemistry, CMK, Hasselt University, Agoralaan Gebouw D, Diepenbeek 3590, Belgium.
| | - Iwona Lupul
- Division of Polymer and Carbonaceous Materials, Faculty of Chemistry, Wroclaw University of Technology, ul. Gdañska 7/9, Wroclaw 50-344, Poland.
| | - Grazyna Gryglewicz
- Division of Polymer and Carbonaceous Materials, Faculty of Chemistry, Wroclaw University of Technology, ul. Gdañska 7/9, Wroclaw 50-344, Poland.
| | - Sonja Schreurs
- NuTeC, CMK, Hasselt University, Agoralaan Gebouw H, Diepenbeek 3590, Belgium.
| | - Robert Carleer
- Research Group of Applied and Analytical Chemistry, CMK, Hasselt University, Agoralaan Gebouw D, Diepenbeek 3590, Belgium.
| | - Jan Yperman
- Research Group of Applied and Analytical Chemistry, CMK, Hasselt University, Agoralaan Gebouw D, Diepenbeek 3590, Belgium.
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Vandewijngaarden J, Murariu M, Dubois P, Carleer R, Yperman J, D'Haen J, Peeters R, Buntinx M. Effect of ultrafine talc on crystallization and end-use properties of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate). J Appl Polym Sci 2016. [DOI: 10.1002/app.43808] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jens Vandewijngaarden
- Research Group of Applied and Analytical Chemistry; Hasselt University; Diepenbeek 3590 Belgium
- Research Group Packaging Technology Center, IMO-IMOMEC; Hasselt University; Diepenbeek 3590 Belgium
| | - Marius Murariu
- Laboratory of Polymeric and Composite Materials; Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons & Materia Nova Research Centre; Mons 7000 Belgium
| | - Philippe Dubois
- Laboratory of Polymeric and Composite Materials; Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons & Materia Nova Research Centre; Mons 7000 Belgium
| | - Robert Carleer
- Research Group of Applied and Analytical Chemistry; Hasselt University; Diepenbeek 3590 Belgium
| | - Jan Yperman
- Research Group of Applied and Analytical Chemistry; Hasselt University; Diepenbeek 3590 Belgium
| | - Jan D'Haen
- Institute for Materials Research (IMO); Hasselt University; Diepenbeek 3590 Belgium
- IMOMEC, IMEC Vzw; Diepenbeek 3590 Belgium
| | - Roos Peeters
- Research Group Packaging Technology Center, IMO-IMOMEC; Hasselt University; Diepenbeek 3590 Belgium
| | - Mieke Buntinx
- Research Group Packaging Technology Center, IMO-IMOMEC; Hasselt University; Diepenbeek 3590 Belgium
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29
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Vanderheyden SRH, Van Ammel R, Sobiech-Matura K, Vanreppelen K, Schreurs S, Schroeyers W, Yperman J, Carleer R. Adsorption of cesium on different types of activated carbon. J Radioanal Nucl Chem 2016. [DOI: 10.1007/s10967-016-4807-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Shah F, Nicolás C, Bentzer J, Ellström M, Smits M, Rineau F, Canbäck B, Floudas D, Carleer R, Lackner G, Braesel J, Hoffmeister D, Henrissat B, Ahrén D, Johansson T, Hibbett DS, Martin F, Persson P, Tunlid A. Ectomycorrhizal fungi decompose soil organic matter using oxidative mechanisms adapted from saprotrophic ancestors. New Phytol 2016; 209:1705-19. [PMID: 26527297 PMCID: PMC5061094 DOI: 10.1111/nph.13722] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [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: 06/08/2015] [Accepted: 09/22/2015] [Indexed: 05/21/2023]
Abstract
Ectomycorrhizal fungi are thought to have a key role in mobilizing organic nitrogen that is trapped in soil organic matter (SOM). However, the extent to which ectomycorrhizal fungi decompose SOM and the mechanism by which they do so remain unclear, considering that they have lost many genes encoding lignocellulose-degrading enzymes that are present in their saprotrophic ancestors. Spectroscopic analyses and transcriptome profiling were used to examine the mechanisms by which five species of ectomycorrhizal fungi, representing at least four origins of symbiosis, decompose SOM extracted from forest soils. In the presence of glucose and when acquiring nitrogen, all species converted the organic matter in the SOM extract using oxidative mechanisms. The transcriptome expressed during oxidative decomposition has diverged over evolutionary time. Each species expressed a different set of transcripts encoding proteins associated with oxidation of lignocellulose by saprotrophic fungi. The decomposition 'toolbox' has diverged through differences in the regulation of orthologous genes, the formation of new genes by gene duplications, and the recruitment of genes from diverse but functionally similar enzyme families. The capacity to oxidize SOM appears to be common among ectomycorrhizal fungi. We propose that the ancestral decay mechanisms used primarily to obtain carbon have been adapted in symbiosis to scavenge nutrients instead.
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Affiliation(s)
- Firoz Shah
- Department of BiologyMicrobial Ecology GroupLund UniversityEcology BuildingSE‐223 62LundSweden
| | - César Nicolás
- Department of BiologyMicrobial Ecology GroupLund UniversityEcology BuildingSE‐223 62LundSweden
| | - Johan Bentzer
- Department of BiologyMicrobial Ecology GroupLund UniversityEcology BuildingSE‐223 62LundSweden
| | - Magnus Ellström
- Department of BiologyMicrobial Ecology GroupLund UniversityEcology BuildingSE‐223 62LundSweden
| | - Mark Smits
- Centre for Environmental SciencesHasselt UniversityBuilding DAgoralaan3590DiepenbeekLimburgBelgium
| | - Francois Rineau
- Centre for Environmental SciencesHasselt UniversityBuilding DAgoralaan3590DiepenbeekLimburgBelgium
| | - Björn Canbäck
- Department of BiologyMicrobial Ecology GroupLund UniversityEcology BuildingSE‐223 62LundSweden
| | - Dimitrios Floudas
- Department of BiologyMicrobial Ecology GroupLund UniversityEcology BuildingSE‐223 62LundSweden
- Biology DepartmentLasry Center for BioscienceClark University950 Main StreetWorcesterMA01610‐1477USA
| | - Robert Carleer
- Centre for Environmental SciencesHasselt UniversityBuilding DAgoralaan3590DiepenbeekLimburgBelgium
| | - Gerald Lackner
- Department of Pharmaceutical Microbiology at the Hans Knöll InstituteFriedrich‐Schiller‐UniversitätBeutenbergstrasse 11a07745JenaGermany
| | - Jana Braesel
- Department of Pharmaceutical Microbiology at the Hans Knöll InstituteFriedrich‐Schiller‐UniversitätBeutenbergstrasse 11a07745JenaGermany
| | - Dirk Hoffmeister
- Department of Pharmaceutical Microbiology at the Hans Knöll InstituteFriedrich‐Schiller‐UniversitätBeutenbergstrasse 11a07745JenaGermany
| | - Bernard Henrissat
- Centre National de la Recherche Scientifique (CNRS)UMR7257Université Aix‐MarseilleMarseille13288France
- Department of Biological SciencesKing Abdulaziz UniversityJeddahSaudi Arabia
| | - Dag Ahrén
- Department of BiologyMicrobial Ecology GroupLund UniversityEcology BuildingSE‐223 62LundSweden
- Bioinformatics Infrastructures for Life Sciences (BILS)Department of BiologyLund UniversityEcology BuildingSE‐223 62LundSweden
| | - Tomas Johansson
- Department of BiologyMicrobial Ecology GroupLund UniversityEcology BuildingSE‐223 62LundSweden
| | - David S. Hibbett
- Biology DepartmentLasry Center for BioscienceClark University950 Main StreetWorcesterMA01610‐1477USA
| | - Francis Martin
- Institut de la Recherche Agronomique (INRA)Laboratory of Excellence ARBREUMR INRA‐Université de Lorraine ‘Interactions Arbres/Micro‐organismes’INRA‐Nancy54280ChampenouxFrance
| | - Per Persson
- Department of BiologyMicrobial Ecology GroupLund UniversityEcology BuildingSE‐223 62LundSweden
- Centre for Environmental and Climate Research (CEC)Lund UniversityEcology BuildingSE‐223 62LundSweden
| | - Anders Tunlid
- Department of BiologyMicrobial Ecology GroupLund UniversityEcology BuildingSE‐223 62LundSweden
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31
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Marrocchi A, Adriaensens P, Bartollini E, Barkakaty B, Carleer R, Chen J, Hensley DK, Petrucci C, Tassi M, Vaccaro L. Corrigendum to “Novel cross-linked polystyrenes with large space network as tailor-made catalyst supports for sustainable media” [Eur. Polym. J. 73 (2015) 391–401]. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.01.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Rineau F, Stas J, Nguyen NH, Kuyper TW, Carleer R, Vangronsveld J, Colpaert JV, Kennedy PG. Ectomycorrhizal Fungal Protein Degradation Ability Predicted by Soil Organic Nitrogen Availability. Appl Environ Microbiol 2015; 82:1391-1400. [PMID: 26682855 PMCID: PMC4771325 DOI: 10.1128/aem.03191-15] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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: 10/02/2015] [Accepted: 12/04/2015] [Indexed: 11/20/2022] Open
Abstract
In temperate and boreal forest ecosystems, nitrogen (N) limitation of tree metabolism is alleviated by ectomycorrhizal (ECM) fungi. As forest soils age, the primary source of N in soil switches from inorganic (NH4 (+) and NO3 (-)) to organic (mostly proteins). It has been hypothesized that ECM fungi adapt to the most common N source in their environment, which implies that fungi growing in older forests would have greater protein degradation abilities. Moreover, recent results for a model ECM fungal species suggest that organic N uptake requires a glucose supply. To test the generality of these hypotheses, we screened 55 strains of 13 Suillus species with different ecological preferences for their in vitro protein degradation abilities. Suillus species preferentially occurring in mature forests, where soil contains more organic matter, had significantly higher protease activity than those from young forests with low-organic-matter soils or species indifferent to forest age. Within species, the protease activities of ecotypes from soils with high or low soil organic N content did not differ significantly, suggesting resource partitioning between mineral and organic soil layers. The secreted protease mixtures were strongly dominated by aspartic peptidases. Glucose addition had variable effects on secreted protease activity; in some species, it triggered activity, but in others, activity was repressed at high concentrations. Collectively, our results indicate that protease activity, a key ectomycorrhizal functional trait, is positively related to environmental N source availability but is also influenced by additional factors, such as carbon availability.
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Affiliation(s)
- Francois Rineau
- Centre for Environmental Sciences, Environmental Biology Group, Hasselt University, Hasselt, Belgium
| | - Jelle Stas
- Centre for Environmental Sciences, Environmental Biology Group, Hasselt University, Hasselt, Belgium
| | - Nhu H Nguyen
- Department of Plant Biology, University of Minnesota, St. Paul, Minnesota, USA
| | - Thomas W Kuyper
- Department of Soil Quality, Wageningen University, Wageningen, The Netherlands
| | - Robert Carleer
- Centre for Environmental Sciences, Environmental Biology Group, Hasselt University, Hasselt, Belgium
| | - Jaco Vangronsveld
- Centre for Environmental Sciences, Environmental Biology Group, Hasselt University, Hasselt, Belgium
| | - Jan V Colpaert
- Centre for Environmental Sciences, Environmental Biology Group, Hasselt University, Hasselt, Belgium
| | - Peter G Kennedy
- Department of Plant Biology, University of Minnesota, St. Paul, Minnesota, USA
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Marrocchi A, Adriaensens P, Bartollini E, Barkakaty B, Carleer R, Chen J, Hensley DK, Petrucci C, Tassi M, Vaccaro L. Novel cross-linked polystyrenes with large space network as tailor-made catalyst supports for sustainable media. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.10.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Lupul I, Yperman J, Carleer R, Gryglewicz G. Adsorption of atrazine on hemp stem-based activated carbons with different surface chemistry. ADSORPTION 2015. [DOI: 10.1007/s10450-015-9689-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Suchithra PS, Carleer R, Ananthakumar S, Yperman J. A hybridization approach to efficient TiO2 photodegradation of aqueous benzalkonium chloride. J Hazard Mater 2015; 293:122-130. [PMID: 25855569 DOI: 10.1016/j.jhazmat.2015.03.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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: 02/02/2015] [Revised: 03/03/2015] [Accepted: 03/05/2015] [Indexed: 06/04/2023]
Abstract
TiO2 get positively charged upon UV-irradiation and repel the cationic pollutants away from the surface. Hybridization of AC onto TiO2 (ACT) tends catalyst surface negatively charged besides providing highly favorable adsorptions sites for cationic pollutants. The photodegradation of benzalkonium chloride (BKC), a quaternary ammonium surfactant and a pharmaceutical, is investigated with ACT. The surface charge of the catalyst in surfactant and non-surfactant aqueous dispersion under UV-irradiation is investigated and explained. The anomalous increase in COD values at the beginning of BKC-photodegradation is explained. The intermediate products formed are identified in both solution and solid phase. Trace amount of dodecane remained adsorbed on the catalyst surface after 1h UV-irradiation, but complete mineralization of BKC is achieved with 2h UV-irradiation. We propose that BKC photodegradation starts by central fission of benzyl CN bond followed by dealkylation, and demethylation steps.
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Affiliation(s)
- Padmajan Sasikala Suchithra
- Research group of Applied and Analytical Chemistry, University Hasselt, Agoralaan, Gebouw D, BE-3590 Diepenbeek, Belgium.
| | - Robert Carleer
- Research group of Applied and Analytical Chemistry, University Hasselt, Agoralaan, Gebouw D, BE-3590 Diepenbeek, Belgium
| | - Solaippan Ananthakumar
- Materials Science and Technology Division, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695019, India
| | - Jan Yperman
- Research group of Applied and Analytical Chemistry, University Hasselt, Agoralaan, Gebouw D, BE-3590 Diepenbeek, Belgium.
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Qiu W, Müller R, Voroshazi E, Conings B, Carleer R, Boyen HG, Turbiez M, Froyen L, Heremans P, Hadipour A. Nafion-modified MoOx as effective room-temperature hole injection layer for stable, high-performance inverted organic solar cells. ACS Appl Mater Interfaces 2015; 7:3581-9. [PMID: 25626465 DOI: 10.1021/am507459t] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
We present a hole injection layer processed from solution at room temperature for inverted organic solar cells. Bis(2,4-pentanedionato) molybdenum(VI) dioxide (MoO2(acac)2) is used as the precursor for MoOx. Small amounts of Nafion in the precursor solution allow it to form continuous films with good wetting onto the active layers. The hydrolysis of MoO2(acac)2 and the effects of adding Nafion to the precursor solution are studied by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The devices with solution-processed MoOx including Nafion exhibited comparable performance to the reference devices based on the commonly used hole injection layers such as poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) or evaporated MoO3. Inverted poly(3-hexylthiophene):[6,6]-phenyl C61-butyric acid methyl ester devices with Nafion-modified MoOx maintain 80% of their initial power conversion efficiency upon exposure to ambient air for ∼5000 h, outperforming devices with PEDOT:PSS or with evaporated MoO3.
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Affiliation(s)
- Weiming Qiu
- Imec , Kapeldreef 75, 3001 Heverlee, Belgium
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Tassi M, Bartollini E, Adriaensens P, Bianchi L, Barkakaty B, Carleer R, Chen J, Hensley DK, Marrocchi A, Vaccaro L. Synthesis, characterization and catalytic activity of novel large network polystyrene-immobilized organic bases. RSC Adv 2015. [DOI: 10.1039/c5ra21140a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In view of searching for efficient solid catalysts to be used in environmentally friendly reaction conditions, novel gel-type cross-linked polystyrenes functionalized with diethylamine and 1,5,7-triazabicyclo[4.4.0]dec-5-ene, have been prepared.
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Affiliation(s)
- Marco Tassi
- Hasselt University – Applied and Analytical Chemistry
- BE-3590 Diepenbeek
- Belgium
| | - Elena Bartollini
- Laboratory of Green Synthetic Organic Chemistry
- CEMIN – Dipartimento di Chimica, Biologia e Biotecnologie
- Università di Perugia
- 06123 Perugia
- Italy
| | - Peter Adriaensens
- Hasselt University – Applied and Analytical Chemistry
- BE-3590 Diepenbeek
- Belgium
| | - Luca Bianchi
- Laboratory of Green Synthetic Organic Chemistry
- CEMIN – Dipartimento di Chimica, Biologia e Biotecnologie
- Università di Perugia
- 06123 Perugia
- Italy
| | - Balaka Barkakaty
- Center for Nanophase Materials Sciences
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | - Robert Carleer
- Hasselt University – Applied and Analytical Chemistry
- BE-3590 Diepenbeek
- Belgium
| | - Jihua Chen
- Center for Nanophase Materials Sciences
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | - Dale K. Hensley
- Center for Nanophase Materials Sciences
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | - Assunta Marrocchi
- Laboratory of Green Synthetic Organic Chemistry
- CEMIN – Dipartimento di Chimica, Biologia e Biotecnologie
- Università di Perugia
- 06123 Perugia
- Italy
| | - Luigi Vaccaro
- Laboratory of Green Synthetic Organic Chemistry
- CEMIN – Dipartimento di Chimica, Biologia e Biotecnologie
- Università di Perugia
- 06123 Perugia
- Italy
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Janssen J, Weyens N, Croes S, Beckers B, Meiresonne L, Van Peteghem P, Carleer R, Vangronsveld J. Phytoremediation of Metal Contaminated Soil Using Willow: Exploiting Plant-Associated Bacteria to Improve Biomass Production and Metal Uptake. Int J Phytoremediation 2015; 17:1123-36. [PMID: 25942689 DOI: 10.1080/15226514.2015.1045129] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Short rotation coppice (SRC) of willow and poplar is proposed for economic valorization and concurrently as remediation strategy for metal contaminated land in northeast-Belgium. However, metal phytoextraction appears insufficient to effectuate rapid reduction of soil metal contents. To increase both biomass production and metal accumulation of SRC, two strategies are proposed: (i) in situ selection of the best performing clones and (ii) bioaugmentation of these clones with beneficial plant-associated bacteria. Based on field data, two experimental willow clones, a Salix viminalis and a Salix alba x alba clone, were selected. Compared to the best performing commercial clones, considerable increases in stem metal extraction were achieved (up to 74% for Cd and 91% for Zn). From the selected clones, plant-associated bacteria were isolated and identified. All strains were subsequently screened for their plant growth-promoting and metal uptake enhancing traits. Five strains were selected for a greenhouse inoculation experiment with the selected clones planted in Cd-Zn-Pb contaminated soil. Extraction potential tended to increase after inoculation of S. viminalis plants with a Rahnella sp. strain due to a significantly increased twig biomass. However, although bacterial strains showing beneficial traits in vitro were used for inoculation, increments in extraction potential were not always observed.
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Affiliation(s)
- Jolien Janssen
- a Hasselt University, Centre for Environmental Sciences , Diepenbeek , Belgium
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Weyens N, Beckers B, Schellingen K, Ceulemans R, van der Lelie D, Newman L, Taghavi S, Carleer R, Vangronsveld J. The Potential of the Ni-Resistant TCE-Degrading Pseudomonas putida W619-TCE to Reduce Phytotoxicity and Improve Phytoremediation Efficiency of Poplar Cuttings on A Ni-TCE Co-Contamination. Int J Phytoremediation 2015; 17:40-48. [PMID: 25174423 DOI: 10.1080/15226514.2013.828016] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
To examine the potential of Pseudomonas putida W619-TCE to improve phytoremediation of Ni-TCE co-contamination, the effects of inoculation of a Ni-resistant, TCE-degrading root endophyte on Ni-TCE phytotoxicity, Ni uptake and trichloroethylene (TCE) degradation of Ni-TCE-exposed poplar cuttings are evaluated. After inoculation with P. putida W619-TCE, root weight of non-exposed poplar cuttings significantly increased. Further, inoculation induced a mitigation of the Ni-TCE phytotoxicity, which was illustrated by a diminished exposure-induced increase in activity of antioxidative enzymes. Considering phytoremediation efficiency, inoculation with P. putida W619-TCE resulted in a 45% increased Ni uptake in roots as well as a slightly significant reduction in TCE concentration in leaves and TCE evapotranspiration to the atmosphere. These results indicate that endophytes equipped with the appropriate characteristics can assist their host plant to deal with co-contamination of toxic metals and organic contaminants during phytoremediation. Furthermore, as poplar is an excellent plant for biomass production as well as for phytoremediation, the obtained results can be exploited to produce biomass for energy and industrial feedstock applications in a highly productive manner on contaminated land that is not suited for normal agriculture. Exploiting this land for biomass production could contribute to diminish the conflict between food and bioenergy production.
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Affiliation(s)
- Nele Weyens
- a Hasselt University , Centre for Environmental Sciences , Diepenbeek , Belgium
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40
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Jozefczak M, Keunen E, Schat H, Bliek M, Hernández LE, Carleer R, Remans T, Bohler S, Vangronsveld J, Cuypers A. Differential response of Arabidopsis leaves and roots to cadmium: glutathione-related chelating capacity vs antioxidant capacity. Plant Physiol Biochem 2014; 83:1-9. [PMID: 25049163 DOI: 10.1016/j.plaphy.2014.07.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [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: 04/30/2014] [Accepted: 07/01/2014] [Indexed: 05/18/2023]
Abstract
This study aims to uncover the spatiotemporal involvement of glutathione (GSH) in two major mechanisms of cadmium (Cd)-induced detoxification (i.e. chelation and antioxidative defence). A kinetic study was conducted on hydroponically grown Arabidopsis thaliana (L. Heyhn) to gain insight into the early events after exposure to Cd. Cadmium detoxification was investigated at different levels, including gene transcripts, enzyme activities and metabolite content. Data indicate a time-dependent response both within roots and between plant organs. Early on in roots, GSH was preferentially allocated to phytochelatin (PC) synthesis destined for Cd chelation. This led to decreased GSH levels, without alternative pathways activated to complement GSH's antioxidative functions. After one day however, multiple antioxidative pathways increased including superoxide dismutase (SOD), ascorbate (AsA) and catalase (CAT) to ensure efficient neutralization of Cd-induced reactive oxygen species (ROS). As a consequence of Cd retention and detoxification in roots, a delayed response occurred in leaves. Together with high leaf thiol contents and possibly signalling responses from the roots, the leaves were protected, allowing them sufficient time to activate their defence mechanisms.
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Affiliation(s)
- Marijke Jozefczak
- Hasselt University, Centre for Environmental Sciences, Agoralaan Building D, B-3590 Diepenbeek, Belgium.
| | - Els Keunen
- Hasselt University, Centre for Environmental Sciences, Agoralaan Building D, B-3590 Diepenbeek, Belgium.
| | - Henk Schat
- Free University of Amsterdam, Institute of Molecular and Cellular Biology, De Boelelaan 1085, NL-1081 HV Amsterdam, The Netherlands.
| | - Mattijs Bliek
- Free University of Amsterdam, Institute of Molecular and Cellular Biology, De Boelelaan 1085, NL-1081 HV Amsterdam, The Netherlands.
| | - Luis E Hernández
- Universidad Autónoma de Madrid, Laboratorio de Fisiología Vegetal, Departamento de Biología, Campus de Cantoblanco, 28049 Madrid, Spain.
| | - Robert Carleer
- Hasselt University, Centre for Environmental Sciences, Agoralaan Building D, B-3590 Diepenbeek, Belgium.
| | - Tony Remans
- Hasselt University, Centre for Environmental Sciences, Agoralaan Building D, B-3590 Diepenbeek, Belgium.
| | - Sacha Bohler
- Hasselt University, Centre for Environmental Sciences, Agoralaan Building D, B-3590 Diepenbeek, Belgium.
| | - Jaco Vangronsveld
- Hasselt University, Centre for Environmental Sciences, Agoralaan Building D, B-3590 Diepenbeek, Belgium.
| | - Ann Cuypers
- Hasselt University, Centre for Environmental Sciences, Agoralaan Building D, B-3590 Diepenbeek, Belgium.
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41
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Weyens N, Gielen M, Beckers B, Boulet J, van der Lelie D, Taghavi S, Carleer R, Vangronsveld J. Bacteria associated with yellow lupine grown on a metal-contaminated soil: in vitro screening and in vivo evaluation for their potential to enhance Cd phytoextraction. Plant Biol (Stuttg) 2014; 16:988-96. [PMID: 24400887 DOI: 10.1111/plb.12141] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [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: 04/22/2013] [Accepted: 11/07/2013] [Indexed: 05/13/2023]
Abstract
In order to stimulate selection for plant-associated bacteria with the potential to improve Cd phytoextraction, yellow lupine plants were grown on a metal-contaminated field soil. It was hypothesised that growing these plants on this contaminated soil, which is a source of bacteria possessing different traits to cope with Cd, could enhance colonisation of lupine with potential plant-associated bacteria that could then be inoculated in Cd-exposed plants to reduce Cd phytotoxicity and enhance Cd uptake. All cultivable bacteria from rhizosphere, root and stem were isolated and genotypically and phenotypically characterised. Many of the rhizobacteria and root endophytes produce siderophores, organic acids, indole-3-acetic acid (IAA) and aminocyclopropane-1-carboxylate (ACC) deaminase, as well as being resistant to Cd and Zn. Most of the stem endophytes could produce organic acids (73.8%) and IAA (74.3%), however, only a minor fraction (up to 0.7%) were Cd or Zn resistant or could produce siderophores or ACC deaminase. A siderophore- and ACC deaminase-producing, highly Cd-resistant Rhizobium sp. from the rhizosphere, a siderophore-, organic acid-, IAA- and ACC deaminase-producing highly Cd-resistant Pseudomonas sp. colonising the roots, a highly Cd- and Zn-resistant organic acid and IAA-producing Clavibacter sp. present in the stem, and a consortium composed of these three strains were inoculated into non-exposed and Cd-exposed yellow lupine plants. Although all selected strains possessed promising in vitro characteristics to improve Cd phytoextraction, inoculation of none of the strains (i) reduced Cd phytotoxicity nor (ii) strongly affected plant Cd uptake. This work highlights that in vitro characterisation of bacteria is not sufficient to predict the in vivo behaviour of bacteria in interaction with their host plants.
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Affiliation(s)
- N Weyens
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
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42
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Hermans K, Van den Plas D, Kerimova S, Carleer R, Adriaensens P, Weyenberg W, Ludwig A. Development and characterization of mucoadhesive chitosan films for ophthalmic delivery of cyclosporine A. Int J Pharm 2014; 472:10-9. [DOI: 10.1016/j.ijpharm.2014.06.017] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Revised: 05/21/2014] [Accepted: 06/09/2014] [Indexed: 10/25/2022]
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43
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Vanreppelen K, Vanderheyden S, Kuppens T, Schreurs S, Yperman J, Carleer R. Activated carbon from pyrolysis of brewer's spent grain: Production and adsorption properties. Waste Manag Res 2014; 32:634-645. [PMID: 25012859 DOI: 10.1177/0734242x14538306] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Brewer's spent grain is a low cost residue generated by the brewing industry. Its chemical composition (high nitrogen content 4.35 wt.%, fibres, etc.) makes it very useful for the production of added value in situ nitrogenised activated carbon. The composition of brewer's spent grain revealed high amounts of cellulose (20.8 wt.%), hemicellulose (48.78 wt.%) and lignin (11.3 wt.%). The fat, ethanol extractives and ash accounted for 8.17 wt.%, 4.7 wt.% and 3.2 wt.%, respectively. Different activated carbons were produced in a lab-scale pyrolysis/activation reactor by applying several heat and steam activation profiles on brewer's spent grain. Activated carbon yields from 16.1 to 23.6 wt.% with high N-contents (> 2 wt.%) were obtained. The efficiency of the prepared activated carbons for phenol adsorption was studied as a function of different parameters: pH, contact time and carbon dosage relative to two commercial activated carbons. The equilibrium isotherms were described by the non-linear Langmuir and Freundlich models, and the kinetic results were fitted using the pseudo-first-order model and the pseudo-second-order model. The feasibility of an activated carbon production facility (onsite and offsite) that processes brewer's spent grain for different input feeds is evaluated based on a techno-economic model for estimating the net present value. Even though the model assumptions start from a rather pessimistic scenario, encouraging results for a profitable production of activated carbon using brewer's spent grain are obtained.
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Affiliation(s)
- Kenny Vanreppelen
- Research Group of Analytical and Applied Chemistry, Hasselt University, Diepenbeek, Belgium Research Group of Nuclear Technology, Hasselt University, Diepenbeek, Belgium
| | - Sara Vanderheyden
- Research Group of Analytical and Applied Chemistry, Hasselt University, Diepenbeek, Belgium
| | - Tom Kuppens
- Research Group of Environmental Economics, Agoralaan Hasselt University, Diepenbeek, Belgium
| | - Sonja Schreurs
- Research Group of Nuclear Technology, Hasselt University, Diepenbeek, Belgium
| | - Jan Yperman
- Research Group of Analytical and Applied Chemistry, Hasselt University, Diepenbeek, Belgium
| | - Robert Carleer
- Research Group of Analytical and Applied Chemistry, Hasselt University, Diepenbeek, Belgium
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Ruytinx J, Nguyen H, Van Hees M, Op De Beeck M, Vangronsveld J, Carleer R, Colpaert JV, Adriaensen K. Zinc export results in adaptive zinc tolerance in the ectomycorrhizal basidiomycete Suillus bovinus. Metallomics 2014; 5:1225-33. [PMID: 23715468 DOI: 10.1039/c3mt00061c] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
On Zn-polluted soils, populations of the ectomycorrhizal basidiomycete Suillus bovinus exhibit an elevated Zn tolerance when compared to populations on non-polluted sites. To elucidate the mechanism of Zn tolerance, the time-course of Zn uptake was studied in isolates with contrasting Zn tolerance. Unidirectional fluxes and subcellular compartmentation of Zn were investigated through radiotracer flux analyses. Fluorescence imaging was used to support the subcellular Zn compartmentation. After 2 h of exposure to 200 μM Zn, significantly more Zn was accumulated in Zn-sensitive isolates compared to tolerant isolates, despite similar short-term uptake kinetics and similar extracellular Zn sequestration in cell walls. In Zn-sensitive isolates twice as much Zn accumulated in the cytoplasm and 12 times more Zn in the vacuole. (65)Zn efflux analyses revealed a considerably faster Zn export in the Zn-tolerant isolate. The adaptive Zn tolerance in S. bovinus is therefore achieved by a preferential removal of Zn out of the cytoplasm, back into the apoplast, instead of the usual transfer of Zn into the vacuole. Zn exclusion in the fungal symbiont eventually contributes to a lower Zn influx in host plants.
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Affiliation(s)
- Joske Ruytinx
- Hasselt University, Centre for Environmental Sciences, Environmental Biology Group, Agoralaan, Gebouw D, 3590 Diepenbeek, Belgium
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45
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Thijs S, Weyens N, Sillen W, Gkorezis P, Carleer R, Vangronsveld J. Potential for plant growth promotion by a consortium of stress-tolerant 2,4-dinitrotoluene-degrading bacteria: isolation and characterization of a military soil. Microb Biotechnol 2014; 7:294-306. [PMID: 24467368 PMCID: PMC4241723 DOI: 10.1111/1751-7915.12111] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 12/17/2013] [Indexed: 11/28/2022] Open
Abstract
The presence of explosives in soils and the interaction with drought stress and nutrient limitation are among the environmental factors that severely affect plant growth on military soils. In this study, we seek to isolate and identify the cultivable bacteria of a 2,4-dinitrotoluene (DNT) contaminated soil (DS) and an adjacent grassland soil (GS) of a military training area aiming to isolate new plant growth-promoting (PGP) and 2,4-DNT-degrading strains. Metabolic profiling revealed disturbances in Ecocarbon use in the bare DS; isolation of cultivable strains revealed a lower colony-forming-unit count and a less diverse community associated with DS in comparison with GS. New 2,4-DNT-tolerant strains were identified by selective enrichments, which were further characterized by auxanography for 2,4-DNT use, resistance to drought stress, cold, nutrient starvation and PGP features. By selecting multiple beneficial PGP and abiotic stress-resistant strains, efficient 2,4-DNT-degrading consortia were composed. After inoculation, consortium UHasselt Sofie 3 with seven members belonging to Burkholderia, Variovorax, Bacillus, Pseudomonas and Ralstonia species was capable to successfully enhance root length of Arabidopsis under 2,4-DNT stress. After 9 days, doubling of main root length was observed. Our results indicate that beneficial bacteria inhabiting a disturbed environment have the potential to improve plant growth and alleviate 2,4-DNT stress.
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Affiliation(s)
- Sofie Thijs
- Centre for Environmental Sciences, Hasselt University, Agoralaan, B-3590, Diepenbeek, Belgium
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46
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De Smet L, Saerens L, De Beer T, Carleer R, Adriaensens P, Van Bocxlaer J, Vervaet C, Remon JP. Formulation of itraconazole nanococrystals and evaluation of their bioavailability in dogs. Eur J Pharm Biopharm 2014; 87:107-13. [PMID: 24388913 DOI: 10.1016/j.ejpb.2013.12.016] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 11/28/2013] [Accepted: 12/23/2013] [Indexed: 10/25/2022]
Abstract
The aim of the study is to increase the bioavailability of itraconazole (ITRA) using nanosized cocrystals prepared via wet milling of ITRA in combination with dicarboxylic acids. Wet milling was used in order to create a nanosuspension of ITRA in combination with dicarboxylic acids. After spray-drying and bead layering, solid state was characterized by MDSC, XRD, Raman and FT-IR. The release profiles and bioavailability of the nanococrystalline suspension, the spray-dried and bead layered formulation were evaluated. A monodisperse nanosuspension (549±51nm) of ITRA was developed using adipic acid and Tween®80. Solid state characterization indicated the formation of nanococrystals by hydrogen bounds between the triazole group of ITRA and the carboxyl group of adipic acid. A bioavailability study was performed in dogs. The faster drug release from the nanocrystal-based formulation was reflected in the in vivo results since Tmax of the formulations was obtained 3h after administration, while Tmax of the reference formulation was observed only 6h after administration. This fast release of ITRA was obtained by a dual concept: manufacturing of nanosized cocrystals of ITRA and adipic acid via wet milling. Formation of stable nanosized cocrystals via this approach seems a good alternative for amorphous systems to increase the solubility and obtain a fast drug release of BCS class II drugs.
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Affiliation(s)
- Lieselotte De Smet
- Laboratory of Pharmaceutical Technology, Ghent University, Ghent, Belgium
| | - Lien Saerens
- Laboratory of Pharmaceutical Process Analytical Technology, Ghent University, Ghent, Belgium
| | - Thomas De Beer
- Laboratory of Pharmaceutical Process Analytical Technology, Ghent University, Ghent, Belgium
| | - Robert Carleer
- Applied and Analytical Chemistry, Hasselt University, Diepenbeek, Belgium
| | - Peter Adriaensens
- Applied and Analytical Chemistry, Hasselt University, Diepenbeek, Belgium
| | - Jan Van Bocxlaer
- Laboratory of Medical Biochemistry and Clinical Analysis, Ghent University, Belgium
| | - Chris Vervaet
- Laboratory of Pharmaceutical Technology, Ghent University, Ghent, Belgium.
| | - Jean Paul Remon
- Laboratory of Pharmaceutical Technology, Ghent University, Ghent, Belgium
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47
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Truyens S, Jambon I, Croes S, Janssen J, Weyens N, Mench M, Carleer R, Cuypers A, Vangronsveld J. The effect of long-term Cd and Ni exposure on seed endophytes of Agrostis capillaris and their potential application in phytoremediation of metal-contaminated soils. Int J Phytoremediation 2014; 16:643-59. [PMID: 24933875 DOI: 10.1080/15226514.2013.837027] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
We examined whether long-term Cd exposure leads to beneficial changes in the cultivable endophytic bacteria present in the seeds of Agrostis capillaris. Therefore the cultivable seed endophytes of Agrostis capillaris growing on a long-term Cd/Ni-contaminated plot (Cd/Ni seeds) were compared with those originating from a non-contaminated plot (control seeds). We observed plant- and contaminant-dependent effects on the population composition between control and Cd/Ni seeds. Also differences in phenotypic characteristics were found: endophytes from Cd/Ni seeds exhibited more ACC deaminase activity and production of siderophores and IAA, while endophytes from control seeds, very surprisingly, showed more metal tolerance. Finally, the 3 most promising seed endophytes were selected based on their metal tolerance and plant growth promoting potential, and inoculated in Agrostis capillaris seedlings. In case of non-exposed plants, inoculation resulted in a significantly improved plant growth; after inoculation of Cd-exposed plants an increased Cd uptake was achieved without affecting plant growth. This indicates that inoculation of Agrostis with its seed endophytes might be beneficial for its establishment during phytoextraction and phytostabilisation of Cd-contaminated soils.
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48
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Claeys B, Coen RD, De Geest BG, de la Rosa VR, Hoogenboom R, Carleer R, Adriaensens P, Remon JP, Vervaet C. Structural modifications of polymethacrylates: Impact on thermal behavior and release characteristics of glassy solid solutions. Eur J Pharm Biopharm 2013; 85:1206-14. [DOI: 10.1016/j.ejpb.2013.01.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 01/08/2013] [Accepted: 01/28/2013] [Indexed: 10/27/2022]
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49
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Rineau F, Shah F, Smits MM, Persson P, Johansson T, Carleer R, Troein C, Tunlid A. Carbon availability triggers the decomposition of plant litter and assimilation of nitrogen by an ectomycorrhizal fungus. ISME J 2013; 7:2010-22. [PMID: 23788332 PMCID: PMC3965319 DOI: 10.1038/ismej.2013.91] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 04/19/2013] [Accepted: 04/23/2013] [Indexed: 11/17/2022]
Abstract
The majority of nitrogen in forest soils is found in organic matter-protein complexes. Ectomycorrhizal fungi (EMF) are thought to have a key role in decomposing and mobilizing nitrogen from such complexes. However, little is known about the mechanisms governing these processes, how they are regulated by the carbon in the host plant and the availability of more easily available forms of nitrogen sources. Here we used spectroscopic analyses and transcriptome profiling to examine how the presence or absence of glucose and/or ammonium regulates decomposition of litter material and nitrogen mobilization by the ectomycorrhizal fungus Paxillus involutus. We found that the assimilation of nitrogen and the decomposition of the litter material are triggered by the addition of glucose. Glucose addition also resulted in upregulation of the expression of genes encoding enzymes involved in oxidative degradation of polysaccharides and polyphenols, peptidases, nitrogen transporters and enzymes in pathways of the nitrogen and carbon metabolism. In contrast, the addition of ammonium to organic matter had relatively minor effects on the expression of transcripts and the decomposition of litter material, occurring only when glucose was present. On the basis of spectroscopic analyses, three major types of chemical modifications of the litter material were observed, each correlated with the expression of specific sets of genes encoding extracellular enzymes. Our data suggest that the expression of the decomposition and nitrogen assimilation processes of EMF can be tightly regulated by the host carbon supply and that the availability of inorganic nitrogen as such has limited effects on saprotrophic activities.
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Affiliation(s)
- F Rineau
- Environmental Biology Group, Centre for Environmental Sciences, Hasselt University, Agoralaan, Diepenbeek, Belgium
| | - F Shah
- Department of Biology, Microbial Ecology Group, Ecology Building, Lund, Sweden
| | - M M Smits
- Environmental Biology Group, Centre for Environmental Sciences, Hasselt University, Agoralaan, Diepenbeek, Belgium
| | - P Persson
- Department of Chemistry, Umeå University, Umeå, Sweden
| | - T Johansson
- Department of Biology, Microbial Ecology Group, Ecology Building, Lund, Sweden
| | - R Carleer
- Applied and Analytical Chemistry, Hasselt University, Agoralaan, Diepenbeek, Belgium
| | - C Troein
- Department of Astronomy and Theoretical Physics, Lund University, Lund, Sweden
| | - A Tunlid
- Department of Biology, Microbial Ecology Group, Ecology Building, Lund, Sweden
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50
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Marin L, Penxten H, Van Mierloo S, Carleer R, Lutsen L, Vanderzande D, Maes W. In situ
monitoring the thermal degradation of PCPDTBT low band gap polymers with varying alkyl side-chain patterns. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26920] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Lidia Marin
- Design and Synthesis of Organic Semiconductors (DSOS); Institute for Materials Research (IMO-IMOMEC), Hasselt University; Agoralaan 1 - Building D, 3590 Diepenbeek Belgium
- IMEC; IMOMEC Ass. Lab.; Universitaire Campus; Wetenschapspark 1; 3590 Diepenbeek Belgium
| | - Huguette Penxten
- Design and Synthesis of Organic Semiconductors (DSOS); Institute for Materials Research (IMO-IMOMEC), Hasselt University; Agoralaan 1 - Building D, 3590 Diepenbeek Belgium
| | - Sarah Van Mierloo
- Design and Synthesis of Organic Semiconductors (DSOS); Institute for Materials Research (IMO-IMOMEC), Hasselt University; Agoralaan 1 - Building D, 3590 Diepenbeek Belgium
| | - Robert Carleer
- Applied and Analytical Chemistry; Institute for Materials Research (IMO-IMOMEC), Hasselt University; Agoralaan 1 - Building D, 3590 Diepenbeek Belgium
| | - Laurence Lutsen
- IMEC; IMOMEC Ass. Lab.; Universitaire Campus; Wetenschapspark 1; 3590 Diepenbeek Belgium
| | - Dirk Vanderzande
- Design and Synthesis of Organic Semiconductors (DSOS); Institute for Materials Research (IMO-IMOMEC), Hasselt University; Agoralaan 1 - Building D, 3590 Diepenbeek Belgium
- IMEC; IMOMEC Ass. Lab.; Universitaire Campus; Wetenschapspark 1; 3590 Diepenbeek Belgium
| | - Wouter Maes
- Design and Synthesis of Organic Semiconductors (DSOS); Institute for Materials Research (IMO-IMOMEC), Hasselt University; Agoralaan 1 - Building D, 3590 Diepenbeek Belgium
- IMEC; IMOMEC Ass. Lab.; Universitaire Campus; Wetenschapspark 1; 3590 Diepenbeek Belgium
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