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Keet G, Du Toit JP, Pott RWM. Methods for the separation of hydraulic retention time and solids retention time in the application of photosynthetic microorganisms in photobioreactors: a review. World J Microbiol Biotechnol 2024; 40:100. [PMID: 38366203 PMCID: PMC10873236 DOI: 10.1007/s11274-024-03909-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 01/25/2024] [Indexed: 02/18/2024]
Abstract
Photosynthetic microorganisms have a wide range of biotechnical applications, through the application of their versatile metabolisms. However, their use in industry has been extremely limited to date, partially because of the additional complexities associated with their cultivation in comparison to other organisms. Strategies and developments in photobioreactors (PBRs) designed for their culture and applications are needed to drive the field forward. One particular area which bears examination is the use of strategies to separate solid- and hydraulic-residence times (SRT and HRT), to facilitate flow-through systems and continuous processing. The aim of this review is to discuss the various types of PBRs and methods which are currently demonstrated in the literature and industry, with a focus on the separation of HRT and SRT. The use of an efficient method of biomass retention in a PBR may be advantageous as it unlocks the option for continuous operation, which may improve efficiency, and improve economic feasibility of large-scale implementation of photosynthetic biocatalysts, especially where biomass is not the primary product. Due to the underexplored nature of the separation of HRT and SRT in reactors using photosynthetic microorganisms, limited literature is available regarding their performance, efficiencies, and potential issues. This review first introduces an overview into photosynthetic microorganisms cultivated and commonly exploited for use in biotechnological applications, with reference to bioreactor considerations specific to each organism. Following this, the existing technologies used for the separation of HRT and SRT in PBRs are explored. The respective advantages and disadvantages are discussed for each PBR design, which may inform an interested bioprocess engineer.
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Affiliation(s)
- Grant Keet
- Department of Chemical Engineering, Stellenbosch University, Stellenbosch, South Africa
| | - J P Du Toit
- Department of Chemical Engineering, Stellenbosch University, Stellenbosch, South Africa
- Watchmaker Genomics, Cape Town, South Africa
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Luo K, Gao Y, Zhang Y, Chen W, Tang S. Chitosan/polyacrylic acid/octadecene double-crosslinked network hydrogel functionalized porous silica microspheres for multimode liquid chromatographic separation. J Chromatogr A 2023; 1709:464390. [PMID: 37741220 DOI: 10.1016/j.chroma.2023.464390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 09/16/2023] [Accepted: 09/16/2023] [Indexed: 09/25/2023]
Abstract
In this study, chitosan (CS) and polyacrylic acid (PAA) were used to construct a double-crosslinked network hydrogel, which was employed as the functional material for silica microspheres to prepare a CS/PAA hydrogel modified liquid chromatographic stationary phase. During preparation, octadecene (ODE) was introduced into the CS/PAA hydrogel to improve its hydrophobicity and separation ability. The electrostatic interaction between the amino group of CS and the carboxyl group of PAA effectively prevented the swelling of the CS/PAA hydrogel, which ensured the successful application of the obtained CS/PAA hydrogel@SiO2 in chromatographic analysis. Polar nucleosides/bases and B-vitamins were selectively separated using hydrophilic interaction liquid chromatography. Hydrophobic polycyclic aromatic hydrocarbons and alkylphenols were effectively separated through reversed-phase liquid chromatography. Moreover, the effective separation of aromatic positional isomers and chiral enantiomers was achieved. This study confirms the potential application of the CS/PAA hydrogel in chromatographic separation. What is noteworthy is that the method developed in this study also provides a feasible strategy to solve the swelling issue associated with the hydrogel-based liquid chromatographic stationary phase.
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Affiliation(s)
- Kaixing Luo
- School of Chemistry and Environmental Engineering, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430205, China
| | - Yaya Gao
- School of Chemistry and Environmental Engineering, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430205, China
| | - Yuefei Zhang
- School of Chemistry and Environmental Engineering, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430205, China
| | - Wei Chen
- School of Chemistry and Environmental Engineering, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430205, China
| | - Sheng Tang
- School of Chemistry and Environmental Engineering, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430205, China.
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Kabdushev S, Mun G, Suleimenov I, Alikulov A, Shaikhutdinov R, Kopishev E. Formation of Hydrophobic-Hydrophilic Associates in the N-Vinylpyrrolidone and Vinyl Propyl Ether Copolymer Aqueous Solutions. Polymers (Basel) 2023; 15:3578. [PMID: 37688204 PMCID: PMC10489714 DOI: 10.3390/polym15173578] [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: 07/04/2023] [Revised: 08/16/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023] Open
Abstract
Utilizing turbidimetry data, an examination is conducted on the behavior of solutions containing N-vinylpyrrolidone and vinyl propyl ether copolymer within a temperature range coinciding with the occurrence of a phase transition. The investigation reveals that within specific conditions prevailing in this domain, the emergence of entities denoted as hydrophobic-hydrophilic associates is conceivable. These entities are characterized by the presence of a relatively dense core, upheld by hydrophobic interplays, and they are proficient in effectively dispersing irradiation within the optical spectrum. Encircling this core is a hydrophilic periphery that impedes the formation of insoluble precipitates. The development of such associates transpires when hydrophobic interactions have attained a discernible prominence, although they remain inadequate to counteract the forces that drive the expansion of macromolecular coils. Under these circumstances, the energetically favored course of action entails the constitution of a core for the aforementioned associates, involving discrete segments from diverse macromolecules. Notably, the introduction of an additional constituent (ethanol) to the solution, which selectively mitigates hydrophobic interactions, serves to stabilize the hydrophobic-hydrophilic associations.
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Affiliation(s)
- Sherniyaz Kabdushev
- National Engineering Academy of the Republic of Kazakhstan, Almaty 050010, Kazakhstan; (S.K.); (G.M.); (I.S.); (A.A.)
| | - Grigoriy Mun
- National Engineering Academy of the Republic of Kazakhstan, Almaty 050010, Kazakhstan; (S.K.); (G.M.); (I.S.); (A.A.)
- Department of Chemistry & Technology of Organic Materials, Faculty of Chemistry and Chemical Technology, Polymers and Natural Compounds, Al Farabi Kazakh National University, Almaty 050040, Kazakhstan;
| | - Ibragim Suleimenov
- National Engineering Academy of the Republic of Kazakhstan, Almaty 050010, Kazakhstan; (S.K.); (G.M.); (I.S.); (A.A.)
| | - Adilet Alikulov
- National Engineering Academy of the Republic of Kazakhstan, Almaty 050010, Kazakhstan; (S.K.); (G.M.); (I.S.); (A.A.)
- Department of Chemistry & Technology of Organic Materials, Faculty of Chemistry and Chemical Technology, Polymers and Natural Compounds, Al Farabi Kazakh National University, Almaty 050040, Kazakhstan;
| | - Ramazan Shaikhutdinov
- Department of Chemistry & Technology of Organic Materials, Faculty of Chemistry and Chemical Technology, Polymers and Natural Compounds, Al Farabi Kazakh National University, Almaty 050040, Kazakhstan;
| | - Eldar Kopishev
- Department of Chemistry, Faculty of Natural Sciences, L.N. Gumilyov Eurasian National University, Astana 010000, Kazakhstan
- Department of General and Inorganic Chemistry, Faculty of Natural Sciences, Bukhara State University, Bukhara 705018, Uzbekistan
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Bagheri AR, Aramesh N, Lee HK. Chitosan- and/or cellulose-based materials in analytical extraction processes: A review. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116770] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Samodelova MV, Kapitanova OO, Evdokimov PV, Eremina OE, Goodilin EA, Veselova IA. Plasmonic features of free-standing chitosan nanocomposite film with silver and graphene oxide for SERS applications. NANOTECHNOLOGY 2022; 33:335501. [PMID: 35508104 DOI: 10.1088/1361-6528/ac6c98] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 05/04/2022] [Indexed: 06/14/2023]
Abstract
A scalable procedure of SERS substrates design was developed using a novel plasmonic structure based on a freestanding chitosan film, silver nanoparticles, and graphene oxide. Chitosan provides a uniform distribution of silver nanoparticles from a colloidal suspension and, therefore, a reproducible Raman signal from local areas of measurements of several tens of microns. The addition of graphene oxide (GO) to the colloidal solution of silver nanoparticles suppresses the tortuous background fluorescence signal from the analyte and leads to an increase in the signal-to-fluorescence background intensity ratio by up to 6 times as compared to structures without GO. The manufactured plasmonic polymer nanocomposite provides a detection limit of down to 100 pM for R6G using a laser wavelength of 532 nm through a portable ×10 objective. The high colloidal stability of GO in water and the use of an aqueous colloid of silver nanoparticles simplify the procedure for creating a substrate by applying the GO-silver composite on the surface of a chitosan film without a need to form a GO film. Therefore, our approach paves a promising avenue to provide more sensitive detection even for the fluorescent analytes with short-wavelength lasers (532, 633 nm) instead of IR (785, 1024 nm) and foster the practical application of the developed plasmonic composites on portable Raman spectrometers.
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Affiliation(s)
- Mariia V Samodelova
- Faculty of Chemistry, Lomonosov Moscow State University, Leninskie gory 1, Moscow, 119991, Russia
| | - Olesya O Kapitanova
- Faculty of Chemistry, Lomonosov Moscow State University, Leninskie gory 1, Moscow, 119991, Russia
- Center for photonics and 2D materials, Moscow Institute of Physics and Technology, 9 Institutskiy per., Dolgoprudny, Moscow Region, 141701, Russia
| | - Pavel V Evdokimov
- Faculty of Chemistry, Lomonosov Moscow State University, Leninskie gory 1, Moscow, 119991, Russia
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninskii prospect 31, Moscow, 119991, Russia
| | - Olga E Eremina
- Faculty of Chemistry, Lomonosov Moscow State University, Leninskie gory 1, Moscow, 119991, Russia
| | - Eugene A Goodilin
- Faculty of Chemistry, Lomonosov Moscow State University, Leninskie gory 1, Moscow, 119991, Russia
- Faculty of Materials Science, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Irina A Veselova
- Faculty of Chemistry, Lomonosov Moscow State University, Leninskie gory 1, Moscow, 119991, Russia
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Eremina OE, Samodelova MV, Ferree MV, Shekhovtsova TN, Veselova IA. Capturing polycyclic aromatic sulfur heterocycles in electron donor–acceptor complexes. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.05.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Eremina OE, Samodelova MV, Ferree MV, Shekhovtsova TN, Veselova IA. Capturing polycyclic aromatic sulfur heterocycles in electron donor–acceptor complexes. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.04.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Applications of Chitosan in Molecularly and Ion Imprinted Polymers. CHEMISTRY AFRICA-A JOURNAL OF THE TUNISIAN CHEMICAL SOCIETY 2020. [DOI: 10.1007/s42250-020-00177-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Eremina OE, Kapitanova OO, Goodilin EA, Veselova IA. Silver-chitosan nanocomposite as a plasmonic platform for SERS sensing of polyaromatic sulfur heterocycles in oil fuel. NANOTECHNOLOGY 2020; 31:225503. [PMID: 32050183 DOI: 10.1088/1361-6528/ab758f] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Herein, a silver-chitosan nanocomposite for application in surface enhanced Raman spectroscopy (SERS) sensing was proposed. It was shown that optically transparent chitosan coatings with 0.8 μm thickness allow penetration of target analytes to silver nanoparticles and the analysis in both polar and nonpolar solvents. Under the chosen conditions, chitosan formed continuously smooth films and coatings stabilizing rough nanostructured metallic surfaces and served as a suitable matrix for immobilization, uniform spreading, and preconcentration of the analytes. Polycyclic aromatic sulfur heterocycles were chosen as target analytes being one of the most important fuel quality markers, hazardous components, and the hardest-to-remove impurities. For the most effective immobilization and even distribution of the analytes onto a nanostructured metallic surface, an additional polymer layer of chitosan was found to be needed. The presence of thin films of chitosan resulted in higher reproducibility of SERS spectra as compared to bare nanostructured silver substrates. Additionally, the developed nanocomposite SERS sensors provided the rapid determination of dibenzothiophene and its derivatives in isooctane with the threshold of detection better than 0.1 μM. This approach was successfully applied in the analysis of real fuel samples and the results agreed well with independently measured FTIR and GC-MS data.
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Affiliation(s)
- Olga E Eremina
- Faculty of Chemistry, Moscow State University, Leninskie gory, Moscow, 119991, Russia
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