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Pierlot C, Boland Y, Hu H, Reeb C, Bassetti J, Lambertin D. Oil and Organic Liquids Incorporation into Fresh Geopolymer Pastes Using Suitable Quaternary Ammonium Surfactants. J Oleo Sci 2024; 73:625-636. [PMID: 38556296 DOI: 10.5650/jos.ess23183] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/02/2024] Open
Abstract
The direct incorporation of low viscosity organic liquids (OL) such as dodecane and tributylphosphate (TBP) into fresh geopolymers (GP) is difficult and generally leads to variable amounts of un-incorporated OL remaining outside the hardened geopolymer. Experimentally, it is observed that a regular torque increase during OL incorporation corresponds to a suitable dispersion of the OL in the form of fine micrometric droplets. This can be obtained for TBP and dodecane by adding a small quantity of quaternary ammoniums salts (QAs) such as cetyltrimethylammonium bromide (CTAB). Shorter alkyl chains QAs, such as hexamethyltrimethylammonium (HMTA) can also be used but with a reduced efficiency. The positive impact of CTAB is then confirmed by the Washburn capillary rise method, showing that the interactions between TBP and CTAB-modified metakaolin are weaker compared to untreated powder. Finally, it is observed that the incorporation of TBP into geopolymer slurries is much easier than the incorporation of dodecane. The low interfacial tension measured between TBP and the activating solution (around 8 mN·m -1 ), contrasting with dodecane (29 mN·m -1 ), explains that the dispersion of TBP droplets in fresh metakaolin suspensions is more efficient.
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Affiliation(s)
- Christel Pierlot
- Centrale Lille, Université de Lille, CNRS, Université Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide
| | - Yann Boland
- Centrale Lille, Université de Lille, CNRS, Université Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide
| | - Hanyu Hu
- Centrale Lille, Université de Lille, CNRS, Université Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide
| | - Charles Reeb
- Centrale Lille, Université de Lille, CNRS, Université Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide
- CEA, DES, ISEC, DE2D, SEAD, LCBC, Univ Montpellier
| | - Jordan Bassetti
- Centrale Lille, Université de Lille, CNRS, Université Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide
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Ramos DM, Sadtler V, Marchal P, Lemaitre C, Niepceron F, Benyahia L, Roques-Carmes T. Particles' Organization in Direct Oil-in-Water and Reverse Water-in-Oil Pickering Emulsions. Nanomaterials (Basel) 2023; 13:371. [PMID: 36770332 PMCID: PMC9919868 DOI: 10.3390/nano13030371] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/29/2022] [Accepted: 01/06/2023] [Indexed: 06/18/2023]
Abstract
This paper addresses the impact of the particle initial wetting and the viscosity of the oil phase on the structure and rheological properties of direct (Oil/Water) and reverse (Water/Oil) Pickering emulsions. The emulsion structure was investigated via confocal microscopy and static light scattering. The flow and viscoelastic properties were probed by a stress-controlled rheometer. Partially hydrophobic silica particles have been employed at 1 and 4 wt.% to stabilize dodecane or paraffin-based emulsions at 20 vol.% of the dispersed phase. W/O emulsions were obtained when the particles were dispersed in the oily phase while O/W emulsions were prepared when the silica was introduced in the aqueous phase. We demonstrated that, although the particles adsorbed at the droplets interfaces for all the emulsions, their organization, the emulsion structure and their rheological properties depend in which phase they were previously dispersed in. We discuss these features as a function of the particle concentration and the oil viscosity.
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Affiliation(s)
- Diego M. Ramos
- Laboratoire Réactions et Génie des Procédés (LRGP), UMR 7274 CNRS, Université de Lorraine, 1 Rue Grandville, 54001 Nancy, France
| | - Véronique Sadtler
- Laboratoire Réactions et Génie des Procédés (LRGP), UMR 7274 CNRS, Université de Lorraine, 1 Rue Grandville, 54001 Nancy, France
| | - Philippe Marchal
- Laboratoire Réactions et Génie des Procédés (LRGP), UMR 7274 CNRS, Université de Lorraine, 1 Rue Grandville, 54001 Nancy, France
| | - Cécile Lemaitre
- Laboratoire Réactions et Génie des Procédés (LRGP), UMR 7274 CNRS, Université de Lorraine, 1 Rue Grandville, 54001 Nancy, France
| | - Frédérick Niepceron
- Institut des Molécules et Matériaux du Mans (IMMM), UMR 6283 CNRS, Le Mans Université, 1 Avenue Olivier Messiaen, CEDEX 9, 72085 Le Mans, France
| | - Lazhar Benyahia
- Institut des Molécules et Matériaux du Mans (IMMM), UMR 6283 CNRS, Le Mans Université, 1 Avenue Olivier Messiaen, CEDEX 9, 72085 Le Mans, France
| | - Thibault Roques-Carmes
- Laboratoire Réactions et Génie des Procédés (LRGP), UMR 7274 CNRS, Université de Lorraine, 1 Rue Grandville, 54001 Nancy, France
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Yang R, Zhu L, Li T, Zhu LY, Ye Z, Zhang D. Photosynthetic Conversion of CO 2 Into Pinene Using Engineered Synechococcus sp. PCC 7002. Front Bioeng Biotechnol 2022; 9:779437. [PMID: 34976975 PMCID: PMC8718756 DOI: 10.3389/fbioe.2021.779437] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 09/18/2021] [Accepted: 11/22/2021] [Indexed: 11/13/2022] Open
Abstract
Metabolic engineering of cyanobacteria has received much attention as a sustainable strategy to convert CO2 to various longer carbon chain fuels. Pinene has become increasingly attractive since pinene dimers contain high volumetric energy and have been proposed to act as potential aircraft fuels. However, cyanobacteria cannot directly convert geranyl pyrophosphate into pinene due to the lack of endogenous pinene synthase. Herein, we integrated the gene encoding Abies grandis pinene synthase into the model cyanobacterium Synechococcus sp. PCC 7002 through homologous recombination. The genetically modified cyanobacteria achieved a pinene titer of 1.525 ± 0.l45 mg L-1 in the lab-scale tube photobioreactor with CO2 aeration. Specifically, the results showed a mixture of α- and β-pinene (∼33:67 ratio). The ratio of β-pinene in the product was significantly increased compared with that previously reported in the engineered Escherichia coli. Furthermore, we investigated the photoautotrophic growth performances of Synechococcus overlaid with different concentrations of dodecane. The work demonstrates that the engineered Synechococcus is a suitable potential platform for β-pinene production.
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Affiliation(s)
- Ruigang Yang
- Department of Biology and Chemistry, College of Liberal Arts and Sciences, National University of Defense Technology, Changsha, China
| | - Lingyun Zhu
- Department of Biology and Chemistry, College of Liberal Arts and Sciences, National University of Defense Technology, Changsha, China
| | - Tao Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Lv-Yun Zhu
- Department of Biology and Chemistry, College of Liberal Arts and Sciences, National University of Defense Technology, Changsha, China
| | - Zi Ye
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Dongyi Zhang
- Hunan Key Laboratory of Economic Crops, Genetic Improvement, and Integrated Utilization, School of Life Sciences, Hunan University of Science and Technology, Xiangtan, China
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Higo M, Mitsushio M, Yoshidome T, Nakatake S. Characterization of Gold Oxides Prepared by an Oxygen-dc Glow Discharge from Gold Films Using a Gold Discharge Ring by X-ray Photoelectron Spectroscopy. ANAL SCI 2020; 36:1177-1184. [PMID: 32378525 DOI: 10.2116/analsci.20p065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Gold oxides (0.1 - 2.0 nm thick) prepared from gold films by an oxygen-dc glow discharge using a gold discharge ring for 0.17 - 30 min at room temperature were characterized by X-ray photoelectron spectroscopy. The oxide thickness increased with increasing discharge time in contrast to the use of an aluminum ring, and thicker oxide films were obtained. The O 1s spectra show four components: I, II, III, and IV. Components I, II, and IV appear during the early formation periods (≤0.5 min). Components I and II are stable and assigned to hydroxyl groups on the surfaces. Component IV changes into component III (gold oxide) after longer discharge times (≥1 min). The gold oxides (2.0 nm thick) decompose after 15 d at room temperature and decompose immediately at temperatures exceeding 117°C. They also decompose under ultraviolet light irradiation (254, 302, and 365 nm) and decompose more rapidly in water vapor at the shorter wavelengths. The thicker nature of the gold oxides is advantageous for their preservation, and they were preserved in their oxidized state for 196 d in anhydrous dodecane in a dark atmosphere.
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Affiliation(s)
- Morihide Higo
- Department of Chemistry, Biotechnology, and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University
| | - Masaru Mitsushio
- Department of Chemistry, Biotechnology, and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University
| | - Toshifumi Yoshidome
- Department of Chemistry, Biotechnology, and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University
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Sobota D, Joshi H, Ohmann A, Aksimentiev A, Keyser UF. Tailoring Interleaflet Lipid Transfer with a DNA-based Synthetic Enzyme. Nano Lett 2020; 20:4306-4311. [PMID: 32374167 PMCID: PMC7291347 DOI: 10.1021/acs.nanolett.0c00990] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/20/2020] [Indexed: 05/26/2023]
Abstract
Lipid membranes, enveloping all living systems, are of crucial importance, and control over their structure and composition is a highly desirable functionality of artificial structures. However, the rational design of protein-inspired systems is still challenging. Here we have developed a highly functional nucleic acid construct that self-assembles and inserts into membranes, enabling lipid transfer between inner and outer leaflets. By designing the structure to account for interactions between the DNA, its hydrophobic modifications, and the lipids, we successfully exerted control over the rate of interleaflet lipid transfer induced by our DNA-based enzyme. Furthermore, we can regulate the level of lipid transfer by altering the concentration of divalent ions, similar to stimuli-responsive lipid-flipping proteins.
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Affiliation(s)
- Diana Sobota
- Cavendish
Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Himanshu Joshi
- Department
of Physics, University of Illinois at Urbana−Champaign, 1110 West Green Street, Urbana, Illinois 61801, United States
| | - Alexander Ohmann
- Cavendish
Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Aleksei Aksimentiev
- Department
of Physics, University of Illinois at Urbana−Champaign, 1110 West Green Street, Urbana, Illinois 61801, United States
- Beckman
Institute for Advanced Science and Technology, University of Illinois at Urbana−Champaign, 405 North Mathews Avenue, Urbana, Illinois 61801, United States
| | - Ulrich F. Keyser
- Cavendish
Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
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Ghanbarzadeh M, Niknam V, Soltani N, Ebrahimzadeh H. Leptolyngbya fragilis ISC 108 is the most effective strain for dodecane biodegradation in contaminated soils. Int J Phytoremediation 2019; 21:908-920. [PMID: 30931581 DOI: 10.1080/15226514.2019.1583635] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
One of the major environmental problems nowadays is petroleum hydrocarbons contamination. Bioremediation is widely used for cleaning ecosystems contaminated with petroleum hydrocarbons. This study was carried out to investigate the response of five microalgae strains isolated from different regions in Iran for 1% n-dodecane (DOD) degradation. The results revealed that Leptolyngbya fragilis ISC 108 is the most effective strain to utilize n-DOD as growth substrate under a mixotrophic condition. Currently, there is little information about mechanisms involved in microalgae response against DOD. The activity of antioxidant enzymes and total lipid and carbohydrate contents were observed to be greater in DOD-treated L. fragilis ISC 108. Lower values of lipid peroxidation and H2O2 along with an increase of dry weight and specific growth rate in L. fragilis ISC 108 under DOD treatment shows that at the cellular level this strain is better equipped with an efficient oxygen radical scavenging system. In conclusion, this study proposes that L. fragilis ISC 108 can be considered an ideal candidate for use in bioremediation of DOD contaminated sites.
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Affiliation(s)
- Mahboobe Ghanbarzadeh
- a Department of Plant Biology, School of Biology, College of Science , University of Tehran , Tehran , Iran
| | - Vahid Niknam
- a Department of Plant Biology, School of Biology, College of Science , University of Tehran , Tehran , Iran
| | - Neda Soltani
- b Department of Petroleum Microbiology , Research Institute of Applied Science, ACECR , Tehran , Iran
| | - Hasan Ebrahimzadeh
- a Department of Plant Biology, School of Biology, College of Science , University of Tehran , Tehran , Iran
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Kothari A, Charrier M, Wu YW, Malfatti S, Zhou CE, Singer SW, Dugan L, Mukhopadhyay A. Transcriptomic analysis of the highly efficient oil-degrading bacterium Acinetobacter venetianus RAG-1 reveals genes important in dodecane uptake and utilization. FEMS Microbiol Lett 2016; 363:fnw224. [PMID: 27664055 PMCID: PMC5074533 DOI: 10.1093/femsle/fnw224] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [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] [Accepted: 09/22/2016] [Indexed: 02/04/2023] Open
Abstract
The hydrocarbonoclastic bacterium Acinetobacter venetianus RAG-1 has attracted substantial attention due to its powerful oil-degrading capabilities and its potential to play an important ecological role in the cleanup of alkanes. In this study, we compare the transcriptome of the strain RAG-1 grown in dodecane, the corresponding alkanol (dodecanol), and sodium acetate for the characterization of genes involved in dodecane uptake and utilization. Comparison of the transcriptional responses of RAG-1 grown on dodecane led to the identification of 1074 genes that were differentially expressed relative to sodium acetate. Of these, 622 genes were upregulated when grown in dodecane. The highly upregulated genes were involved in alkane catabolism, along with stress response. Our data suggest AlkMb to be primarily involved in dodecane oxidation. Transcriptional response of RAG-1 grown on dodecane relative to dodecanol also led to the identification of permease, outer membrane protein and thin fimbriae coding genes potentially involved in dodecane uptake. This study provides the first model for key genes involved in alkane uptake and metabolism in A. venetianus RAG-1. Analysis of the transcriptome of the oil-degrading bacterium Acinetobacter venetianus RAG-1 helps in identification of genes that are involved in uptake and metabolism of alkanes, thus helping in bioremediation.
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Affiliation(s)
- Ankita Kothari
- Biological Systems and Engineering, Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8099, USA
| | - Marimikel Charrier
- Biological Systems and Engineering, Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8099, USA
| | - Yu-Wei Wu
- Biological Systems and Engineering, Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8099, USA.,Graduate Institute of Biomedical Informatics, Taipei Medical University, Taipei 110, Taiwan Biosciences
| | - Stephanie Malfatti
- Biotechnology Division, Lawrence Livermore National Laboratory, Livermore, CA 94550-5507, USA
| | - Carol E Zhou
- Computing Applications and Research Department, Lawrence Livermore National Laboratory, Livermore, CA 94550-9234, USA
| | - Steven W Singer
- Biological Systems and Engineering, Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8099, USA
| | - Larry Dugan
- Graduate Institute of Biomedical Informatics, Taipei Medical University, Taipei 110, Taiwan Biosciences.,Biotechnology Division, Lawrence Livermore National Laboratory, Livermore, CA 94550-5507, USA
| | - Aindrila Mukhopadhyay
- Biological Systems and Engineering, Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8099, USA
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Kleinegris DMM, van Es MA, Janssen M, Brandenburg WA, Wijffels RH. Phase toxicity of dodecane on the microalga Dunaliella salina. J Appl Phycol 2011; 23:949-958. [PMID: 22131645 PMCID: PMC3210367 DOI: 10.1007/s10811-010-9615-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2010] [Revised: 10/14/2010] [Accepted: 10/14/2010] [Indexed: 05/29/2023]
Abstract
In the so-called milking process of Dunaliella salina carotenoids are extracted and simultaneously produced by the culture, whilst the biomass concentration remains constant. Different theories exist about the extraction mechanisms although none have been proven yet. In this research, direct contact between dodecane and cells during the extraction process was studied microscopically and effects of direct contact were determined during in situ extraction experiments. Our results showed that water-solvent interphase contact resulted in cell death. This cell death and consequent cell rupture resulted in the release and concomitant extraction of the carotenoids. Furthermore, it has been suggested to add a small amount of dichloromethane to the biocompatible dodecane to create an organic phase with more extraction capacity. Our results showed that the addition of dichloromethane resulted in increased cell death and consequently the extraction rate increased. The improved solubility of carotenoids in an organic phase with dichloromethane did not significantly increase the extraction rate.
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Affiliation(s)
- Dorinde M. M. Kleinegris
- Bioprocess Engineering, Wageningen University, P.O. Box 8129, 6700 EV Wageningen, The Netherlands
| | - Marjon A. van Es
- Bioprocess Engineering, Wageningen University, P.O. Box 8129, 6700 EV Wageningen, The Netherlands
| | - Marcel Janssen
- Bioprocess Engineering, Wageningen University, P.O. Box 8129, 6700 EV Wageningen, The Netherlands
| | - Willem A. Brandenburg
- Plant Research International BV, Agrosystems research, Wageningen University and Research Centre, P.O. Box 16, 6700 AV Wageningen, The Netherlands
| | - René H. Wijffels
- Bioprocess Engineering, Wageningen University, P.O. Box 8129, 6700 EV Wageningen, The Netherlands
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