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In-Process Vapor Composition Monitoring in Application to Lyophilization of Ammonium Salt Formulations. J Pharm Sci 2023; 112:264-271. [PMID: 36270539 DOI: 10.1016/j.xphs.2022.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 10/03/2022] [Accepted: 10/03/2022] [Indexed: 11/07/2022]
Abstract
Quality control is of critical importance in manufacturing of lyophilized drug product, which is accomplished by monitoring the process parameters. The residual gas analyzer has emerged as a useful tool in determination of endpoint for primary and secondary drying in lyophilization process as well as leak detection in vacuum systems. This study presents the application of in situ RGA to quantify outgassing rates of species released from aqueous inorganic and organic ammonium salt formulations throughout the freeze-drying process. The determination of ammonia outgassing conditions aids in ensuring product quality where ammonia release is an indication for loss of co-solvent or degradation of active pharmaceutical ingredients (APIs). Data analysis methods are developed to determine ammonia presence under various process conditions. In-situ real time monitoring of vapor dynamics enables RGA to be used as a tool to characterize counter-ion loss throughout the freeze-drying cycle.
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The Prospects of Clay Minerals from the Baltic States for Industrial-Scale Carbon Capture: A Review. MINERALS 2022. [DOI: 10.3390/min12030349] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Carbon capture is among the most sustainable strategies to limit carbon dioxide emissions, which account for a large share of human impact on climate change and ecosystem destruction. This growing threat calls for novel solutions to reduce emissions on an industrial level. Carbon capture by amorphous solids is among the most reasonable options as it requires less energy when compared to other techniques and has comparatively lower development and maintenance costs. In this respect, the method of carbon dioxide adsorption by solids can be used in the long-term and on an industrial scale. Furthermore, certain sorbents are reusable, which makes their use for carbon capture economically justified and acquisition of natural resources full and sustainable. Clay minerals, which are a universally available and versatile material, are amidst such sorbents. These materials are capable of interlayer and surface adsorption of carbon dioxide. In addition, their modification allows to improve carbon dioxide adsorption capabilities even more. The aim of the review is to discuss the prospective of the most widely available clay minerals in the Baltic States for large-scale carbon dioxide emission reduction and to suggest suitable approaches for clay modification to improve carbon dioxide adsorption capacity.
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Zhang X, Du T. Study of rice husk ash derived MCM-41-type materials on pore expansion, Al incorporation, PEI impregnation, and CO2 adsorption. KOREAN J CHEM ENG 2022; 39:736-759. [PMID: 35095156 PMCID: PMC8783188 DOI: 10.1007/s11814-021-0904-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 06/25/2021] [Accepted: 07/12/2021] [Indexed: 10/26/2022]
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Baruah MJ, Bora TJ, Dutta R, Roy S, Guha AK, Bania KK. Fe(III) superoxide radicals in halloysite nanotubes for visible-light-assisted benzyl alcohol oxidation and oxidative C C coupling of 2-naphthol. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111858] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Kinetics of CO2 capture by novel amine-functionalized magnesium oxide adsorbents. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126258] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Kole K, Das S, Samanta A, Jana S. Parametric Study and Detailed Kinetic Understanding of CO 2 Adsorption over High-Surface-Area Flowery Silica Nanomaterials. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c04531] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Jiang Y, Shi XC, Tan P, Qi SC, Gu C, Yang T, Peng SS, Liu XQ, Sun LB. Controllable CO2 Capture in Metal–Organic Frameworks: Making Targeted Active Sites Respond to Light. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c04126] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yao Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xiao-Chuan Shi
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Peng Tan
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Shi-Chao Qi
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Chen Gu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Tao Yang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Song-Song Peng
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xiao-Qin Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Lin-Bing Sun
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
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Das S, Samanta A, Gangopadhyay G, Jana S. Clay-Based Nanocomposites as Recyclable Adsorbent toward Hg(II) Capture: Experimental and Theoretical Understanding. ACS OMEGA 2018; 3:6283-6292. [PMID: 31458810 PMCID: PMC6644673 DOI: 10.1021/acsomega.8b00789] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 05/23/2018] [Indexed: 05/26/2023]
Abstract
Here, we report the development of inorganic-organic hybrid nanocomposites through selective modification of the negative outer surfaces of halloysite nanoclays with two different organosilanes having primary or secondary amine sites to be explored them as novel and cost-effective adsorbents for the extraction of toxic inorganic contaminants from aqueous solution. They possess excellent selectivity for the adsorption of mercury, which shows monolayer molecular adsorption over the nanocomposites. The adsorption kinetics of Hg(II) is very fast and follows pseudo-second-order model compared to pseudo-first-order model. A combined experimental and theoretical study demonstrated that Hg(II) uptake by these nanocomposites is highly favorable and spontaneous up to 40 °C, and beyond this temperature, the uptake capacity gradually reduced. Temperature-dependent adsorption study exhibits endothermicity at low temperature (≤40 °C) and exothermicity beyond 40 °C. pH-dependent adsorption study showed their high uptake capacity until pH 7, which reduced at alkaline pH. All of the nanocomposites hold excellent adsorption capacity even at low concentration of adsorbate, along with multicycle sorption capability. The outstanding adsorption capacity as well as the easy synthetic route to achieve these nanocomposites may attract researchers to develop low-cost adsorbents to capture toxic metals, which in turn regulate the permissible limit of these toxic metals in drinking water.
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Affiliation(s)
- Sankar Das
- Department
of Chemical, Biological & Macro-Molecular Sciences and Technical Research
Centre, S. N. Bose National Centre for Basic
Sciences, Block-JD, Sector-III, Salt Lake, Kolkata 700106, India
| | - Arnab Samanta
- Department
of Chemical, Biological & Macro-Molecular Sciences and Technical Research
Centre, S. N. Bose National Centre for Basic
Sciences, Block-JD, Sector-III, Salt Lake, Kolkata 700106, India
| | - Gautam Gangopadhyay
- Department
of Chemical, Biological & Macro-Molecular Sciences and Technical Research
Centre, S. N. Bose National Centre for Basic
Sciences, Block-JD, Sector-III, Salt Lake, Kolkata 700106, India
| | - Subhra Jana
- Department
of Chemical, Biological & Macro-Molecular Sciences and Technical Research
Centre, S. N. Bose National Centre for Basic
Sciences, Block-JD, Sector-III, Salt Lake, Kolkata 700106, India
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