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Liu M, Xiao H, Pan R, Ren J, Zhang L, Zhang L. Synergistic Effect of Betaines and Dialkyl Chain Anionic Surfactants on Interfacial Arrangement: A Molecular Dynamics Simulation Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:6898-6908. [PMID: 38502007 DOI: 10.1021/acs.langmuir.3c03862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
Mixed systems of betaines and anionic surfactants can have a significant synergistic effect and greatly reduce the interfacial tension (IFT), which has attracted an extensive amount of attention. However, this synergistic effect requires an anionic surfactant and betaine molecular size matching, which limits the scope of its application. In this work, we studied three mixed systems of sodium dialkyl sulfosuccinate (AOT) and betaines with different sizes by molecular dynamics simulation and an IFT experiment and explored the interfacial behavior and synergistic mechanism of AOT in single and mixed systems. The hydrophobic tail chain center angle, average rising height of carbon atoms, stretch degree and distance between the terminal carbon atoms of AOT, and tilt angles of betaine were calculated and analyzed in detail. Simulation results showed that the hydrophobic tail chain center angle of AOT in the single system was smaller, and it tended to extend into the oil phase. After being mixed with different betaines, AOT can adjust its size according to the interfacial vacancies of different betaine systems by changing the alkyl chain orientation and forming tighter interfacial films. The IFT experiment showed that betaine/AOT mixed systems achieved a lower IFT value compared with that of the single system, indicating that AOT showed a synergistic effect with betaines with different structures. This study will be importantly instructively significant for the design and research of betaine mixed systems in crude oil exploitation.
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Affiliation(s)
- Mengxin Liu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Hongyan Xiao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Ruosheng Pan
- Oil and Gas Engineering Research Institute, CNPC Jilin Oilfield Company, Songyuan 138000, P. R. China
| | - Jia Ren
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Lei Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Lu Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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Herrera K, Morales LF, Tarazona NA, Aguado R, Saldarriaga JF. Use of Biochar from Rice Husk Pyrolysis: Part A: Recovery as an Adsorbent in the Removal of Emerging Compounds. ACS OMEGA 2022; 7:7625-7637. [PMID: 35284759 PMCID: PMC8908536 DOI: 10.1021/acsomega.1c06147] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 12/03/2021] [Indexed: 05/16/2023]
Abstract
One of the main products of pyrolysis is char. For the better performance and improvement of its physicochemical properties, it is necessary to make temperature changes. In this study, different temperatures have been tested for the pyrolysis of rice husk, and the biochar obtained from the process went through an evaluation to test its yield in the removal of emerging compounds such as azithromycin (AZT) and erythromycin (ERY). For this, pyrolysis of rice husk has been carried out at temperatures of 450, 500, 550, and 600 °C, and the biochars have been characterized by ultimate analysis and proximate analysis, as well as specific surface area tests. Then, different adsorption tests have been carried out with a 200 mg L-1 drug (AZT and ERY) solution prepared in the laboratory. All biochars have been found to present removal percentages higher than 95%. Therefore, obtaining biochar from rice husk at any temperature and using it in the removal of high-molecular-weight compounds are quite suitable.
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Affiliation(s)
- Katherine Herrera
- Department
of Civil and Environmental Engineering, Universidad de Los Andes, 1Este #19A-40, 111711 Bogotá, Colombia
| | - Luisa F. Morales
- Department
of Civil and Environmental Engineering, Universidad de Los Andes, 1Este #19A-40, 111711 Bogotá, Colombia
| | - Natalia A. Tarazona
- Institute
of Active Polymers, Helmholtz-Zentrum Hereon, Kantstraße 55, 14513 Teltow, Germany
| | - Roberto Aguado
- Department
of Chemical Engineering, University of the
Basque Country, Barrio
Sarriena s/n, 48080 Bilbao, Spain
| | - Juan F. Saldarriaga
- Department
of Civil and Environmental Engineering, Universidad de Los Andes, 1Este #19A-40, 111711 Bogotá, Colombia
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Sy Mohamad SF, Mohd Said F, Abdul Munaim MS, Mohamad S, Azizi Wan Sulaiman WM. Application of experimental designs and response surface methods in screening and optimization of reverse micellar extraction. Crit Rev Biotechnol 2020; 40:341-356. [PMID: 31931631 DOI: 10.1080/07388551.2020.1712321] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Reverse micellar extraction (RME) has emerged as a versatile and efficient tool for downstream processing (DSP) of various biomolecules, including structural proteins and enzymes, due to the substantial advantages over conventional DSP methods. However, the RME system is a complex dependency of several parameters that influences the overall selectivity and performance of the RME system, hence this justifies the need for optimization to obtain higher possible extraction results. For the last two decades, many experimental design strategies for screening and optimization of RME have been described in literature. The objective of this article is to review the use of different experimental designs and response surface methodologies that are currently used to screen and optimize the RME system for various types of biomolecules. Overall, this review provides the rationale for the selection of appropriate screening or optimization techniques for the parameters associated with both forward and backward extraction during the RME of biomolecules.
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Affiliation(s)
- Sharifah Fathiyah Sy Mohamad
- Faculty of Chemical and Process Engineering Technology, College of Engineering Technology, Universiti Malaysia Pahang, Kuantan, Pahang, Malaysia
| | - Farhan Mohd Said
- Faculty of Chemical and Process Engineering Technology, College of Engineering Technology, Universiti Malaysia Pahang, Kuantan, Pahang, Malaysia
| | - Mimi Sakinah Abdul Munaim
- Faculty of Chemical and Process Engineering Technology, College of Engineering Technology, Universiti Malaysia Pahang, Kuantan, Pahang, Malaysia
| | - Shahril Mohamad
- Faculty of Chemical and Process Engineering Technology, College of Engineering Technology, Universiti Malaysia Pahang, Kuantan, Pahang, Malaysia
| | - Wan Mohd Azizi Wan Sulaiman
- Department of Basic Medical Sciences, Kulliyyah of Pharmacy, International Islamic University Malaysia, Kuantan, Pahang, Malaysia
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