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Ren H, Wu Y, Shang J, Jin W, Hou D, Hu G, Wang B. Cleaning Oily Sludge Using Colloidal Gas Aphrons: Optimizing Process Conditions and Analyzing Mechanisms. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:13892-13902. [PMID: 38915238 DOI: 10.1021/acs.langmuir.4c00967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Colloidal gas aphrons (CGAs) are applied in pollutant removal due to their large specific surface area and high surface activity. The structure and properties of the prepared CGAs were investigated in the process of oil removal from oily sludge. The prepared CGAs had a liquid film thickness was 5-10 μm with high stability. CGA interfacial tension was as low as 3.157 mN/m. Then it was found that the oil removal rate of CGAs was higher than that of chemical treatments, showing that CGAs could increase the mass transfer surface area and provide additional attachment sites for pollutants, enhancing the oil removal. The treatment conditions of the oil removal were optimized through response surfaces, showing that under optimal treatment conditions, the oil removal rate of oily sludge reached 96.07%. Additionally, the interaction between surfactant concentration and temperature was the most significant of all of the influencing factors. The behavior and mechanism of CGAs in the cleaning process of oily sludge were further investigated using an inverted fluorescence microscope, SEM, FTIR, and two-dimensional fluorescence spectrometer, showing that pollutants transferred from the liquid film surface of CGAs to the inside the film, and CGAs could specifically adsorb negatively charged organic compounds and aromatic hydrocarbons. The results show that CGAs achieved liquid membrane solubilization. Many negatively charged organic compounds and aromatic hydrocarbons are adsorbed onto the CGAs liquid membrane surface via electrostatic and hydrophobic interactions and then migrated to the hydrophobic layer of the CGAs liquid membrane due to the distribution effect, thus enabling rapid pollutant migration between solid and liquid phases.
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Affiliation(s)
- Hongyang Ren
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
- Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Chengdu 610500, P. R. China
| | - Yongting Wu
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
| | - Jiajian Shang
- Exploration Division, China National Petroleum Tarim Oilfield Branch, Korla 841600, P. R. China
| | - Wenhui Jin
- Sichuan Energy Investment Group Co., Ltd, Chengdu 610000, P. R. China
| | - Diya Hou
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
| | - Guojun Hu
- Tongwei Solar Co., Ltd, Chengdu 610000, P. R. China
| | - Bing Wang
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
- Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Chengdu 610500, P. R. China
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Qu Y, Haverkamp R, Jin Z, Jakobs-Schönwandt D, Patel AV, Hellweg T. Release Kinetics of Potassium, Calcium, and Iron Cations from Carboxymethyl Cellulose Hydrogels at Different pH Values. Chempluschem 2023; 88:e202300368. [PMID: 37881159 DOI: 10.1002/cplu.202300368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 10/27/2023]
Abstract
In an in-depth study of the mechanism of cation release from carboxymethyl cellulose hydrogels synthesized through Schiff base reaction, we analyze the differences in the release kinetics of potassium, calcium, and iron cations with Peleg model at pH values of pH 3.5 and pH 8.5 using ICP-OES (inductively coupled plasma optical emission spectroscopy) technique.
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Affiliation(s)
- Yi Qu
- Department of Chemistry, Physical and Biophysical Chemistry, Bielefeld University, Universitätsstraße 25, 33615, Bielefeld, Germany
- Fermentation and Formulation of Biologicals and Chemicals, Bielefeld Institute of Applied Materials Research, Bielefeld University of Applied Sciences, Interaktion 1, 33619, Bielefeld, Germany
| | - René Haverkamp
- Department of Chemistry, Physical and Biophysical Chemistry, Bielefeld University, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Zhaorui Jin
- Otto Schott Institute for Materials Research, Friedrich Schiller University Jena, Fraunhoferstraße 6, 07743, Jena, Germany
| | - Désirée Jakobs-Schönwandt
- Fermentation and Formulation of Biologicals and Chemicals, Bielefeld Institute of Applied Materials Research, Bielefeld University of Applied Sciences, Interaktion 1, 33619, Bielefeld, Germany
| | - Anant V Patel
- Fermentation and Formulation of Biologicals and Chemicals, Bielefeld Institute of Applied Materials Research, Bielefeld University of Applied Sciences, Interaktion 1, 33619, Bielefeld, Germany
| | - Thomas Hellweg
- Department of Chemistry, Physical and Biophysical Chemistry, Bielefeld University, Universitätsstraße 25, 33615, Bielefeld, Germany
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Chelazzi D, Baglioni P. From Nanoparticles to Gels: A Breakthrough in Art Conservation Science. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:10744-10755. [PMID: 37487238 PMCID: PMC10413966 DOI: 10.1021/acs.langmuir.3c01324] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 07/04/2023] [Indexed: 07/26/2023]
Abstract
Cultural heritage is a crucial resource to increase our society's resilience. However, degradation processes, enhanced by environmental and anthropic risks, inevitably affect works of art, hindering their accessibility and socioeconomic value. In response, interfacial and colloidal chemistry has proposed valuable solutions over the past decades, overcoming the limitations of traditional restoration materials and granting cost- and time-effective remedial conservation of the endangered artifacts. Ranging from inorganic nanoparticles to hybrid composites and soft condensed matter (gels, microemulsions), a wide palette of colloidal systems has been made available to conservators worldwide, targeting the consolidation, cleaning, and protection of works of art. The effectiveness and versatility of the proposed solutions allow the safe and effective treatment of masterpieces belonging to different cultural and artistic productions, spanning from classic ages to the Renaissance and modern/contemporary art. Despite these advancements, the formulation of materials for the preservation of cultural heritage is still an open, exciting field, where recent requirements include coping with the imperatives of the Green Deal to foster the production of sustainable, low-toxicity, and environmentally friendly systems. This review gives a critical overview starting from pioneering works up to the latest advancements in colloidal systems for art conservation, a challenging topic where effective solutions can be transversal to multiple sectors even beyond cultural heritage preservation, from the pharmaceutical and food industry, to cosmetics, tissue engineering, and detergency.
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Affiliation(s)
- David Chelazzi
- Department
of Chemistry “Ugo Schiff” and CSGI, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Piero Baglioni
- CSGI, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
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Gradzielski M, Duvail M, de Molina PM, Simon M, Talmon Y, Zemb T. Using Microemulsions: Formulation Based on Knowledge of Their Mesostructure. Chem Rev 2021; 121:5671-5740. [PMID: 33955731 DOI: 10.1021/acs.chemrev.0c00812] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Microemulsions, as thermodynamically stable mixtures of oil, water, and surfactant, are known and have been studied for more than 70 years. However, even today there are still quite a number of unclear aspects, and more recent research work has modified and extended our picture. This review gives a short overview of how the understanding of microemulsions has developed, the current view on their properties and structural features, and in particular, how they are related to applications. We also discuss more recent developments regarding nonclassical microemulsions such as surfactant-free (ultraflexible) microemulsions or ones containing uncommon solvents or amphiphiles (like antagonistic salts). These new findings challenge to some extent our previous understanding of microemulsions, which therefore has to be extended to look at the different types of microemulsions in a unified way. In particular, the flexibility of the amphiphilic film is the key property to classify different microemulsion types and their properties in this review. Such a classification of microemulsions requires a thorough determination of their structural properties, and therefore, the experimental methods to determine microemulsion structure and dynamics are reviewed briefly, with a particular emphasis on recent developments in the field of direct imaging by means of electron microscopy. Based on this classification of microemulsions, we then discuss their applications, where the application demands have to be met by the properties of the microemulsion, which in turn are controlled by the flexibility of their amphiphilic interface. Another frequently important aspect for applications is the control of the rheological properties. Normally, microemulsions are low viscous and therefore enhancing viscosity has to be achieved by either having high concentrations (often not wished for) or additives, which do not significantly interfere with the microemulsion. Accordingly, this review gives a comprehensive account of the properties of microemulsions, including most recent developments and bringing them together from a united viewpoint, with an emphasis on how this affects the way of formulating microemulsions for a given application with desired properties.
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Affiliation(s)
- Michael Gradzielski
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, D-10623 Berlin, Germany
| | - Magali Duvail
- ICSM, Université Montpellier, CEA, CNRS, ENSCM, 30207 Marcoule, France
| | - Paula Malo de Molina
- Centro de Física de Materiales (CFM) (CSIC-UPV/EHU)-Materials Physics Center (MPC), Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain.,IKERBASQUE - Basque Foundation for Science, María Díaz de Haro 3, 48013 Bilbao, Spain
| | - Miriam Simon
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, D-10623 Berlin, Germany.,Department of Chemical Engineering and the Russell Berrie Nanotechnolgy Inst. (RBNI), Technion-Israel Institute of Technology, Haifa, IL-3200003, Israel
| | - Yeshayahu Talmon
- Department of Chemical Engineering and the Russell Berrie Nanotechnolgy Inst. (RBNI), Technion-Israel Institute of Technology, Haifa, IL-3200003, Israel
| | - Thomas Zemb
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, D-10623 Berlin, Germany.,ICSM, Université Montpellier, CEA, CNRS, ENSCM, 30207 Marcoule, France
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Kandpal N, Dewangan HK, Nagwanshi R, Ghosh KK, Satnami ML. Influence of pyridine oximate and quaternized pyridinium oximate ions on the hydrolysis of phosphate esters in cationic microemulsions. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2018.1476151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Neha Kandpal
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, India
| | - Hitesh K. Dewangan
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, India
| | - Rekha Nagwanshi
- Department of Chemistry, Govt. Madhav Science P. G. College, Ujjain, India
| | - Kallol K. Ghosh
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, India
| | - Manmohan L. Satnami
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, India
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Oberdisse J. Introduction to soft matter and neutron scattering. EPJ WEB OF CONFERENCES 2018. [DOI: 10.1051/epjconf/201818801001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
As an opening lecture to the French-Swedish neutron scattering school held in Uppsala (6th to 9th of December 2016), the basic concepts of both soft matter science and neutron scattering are introduced. Typical soft matter systems like self-assembled surfactants in water, microemulsions, (co-)polymers, and colloids are presented. It will be shown that widely different systems have a common underlying physics dominated by the thermal energy, with astonishing consequences on their statistical thermodynamics, and ultimately rheological properties – namely softness. In the second part, the fundamentals of neutron scattering techniques and in particular small-angle neutron scattering as a powerful method to characterize soft matter systems will be outlined.
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Vargas-Ruiz S, Lutzki J, von Klitzing R, Hellweg T, Wellert S. Wetting of planar solid surfaces by bicontinuous sugar surfactant-based microemulsions. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4188-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Vargas-Ruiz S, Soltwedel O, Micciulla S, Sreij R, Feoktystov A, von Klitzing R, Hellweg T, Wellert S. Sugar Surfactant Based Microemulsions at Solid Surfaces: Influence of the Oil Type and Surface Polarity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:11928-11938. [PMID: 27934065 DOI: 10.1021/acs.langmuir.6b03441] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The structure of sugar-surfactant-based bicontinuous microemulsions in the bulk and at hydrophilic and hydrophobic solid planar surfaces was studied by means of neutron scattering techniques (SANS, NR, and GISANS). In particular, the influence of the type of oil (tetradecane and methyl oleate) on the structural properties in the vicinity of surfaces was investigated at different oil-to-water ratios. In the case of hydrophilic surfaces, the analysis of the scattering length density profiles reveals an induced ordering of the oil and water domains perpendicular to the solid-liquid interface in both sets of microemulsions. At hydrophobic surfaces, differences in the near-surface ordering between microemulsions containing polar and nonpolar oils are observed.
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Affiliation(s)
- Salomé Vargas-Ruiz
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Technische Universität Berlin , Straße des 17 Juni 124, D-10623 Berlin, Germany
| | - Olaf Soltwedel
- Max-Planck-Institute for Solid State Research, Outstation at MLZ, Lichtenbergstr. 1, 85748 Garching, Germany
- Physik-Department, Technische Universität München , James-Franck-Str. 1, 85748 Garching, Germany
| | - Samantha Micciulla
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Technische Universität Berlin , Straße des 17 Juni 124, D-10623 Berlin, Germany
| | - Ramsia Sreij
- Physikalische und Biophysikalische Chemie (PC III), Universität Bielefeld , Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Artem Feoktystov
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH , Lichtenbergstr. 1, 85748 Garching, Germany
| | - Regine von Klitzing
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Technische Universität Berlin , Straße des 17 Juni 124, D-10623 Berlin, Germany
| | - Thomas Hellweg
- Physikalische und Biophysikalische Chemie (PC III), Universität Bielefeld , Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Stefan Wellert
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Technische Universität Berlin , Straße des 17 Juni 124, D-10623 Berlin, Germany
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