Journal of Supercritical Fluids最新文献_第4页

Dye removal from wastewater using nanostructured chitosan aerogels produced by supercritical CO2 drying 利用超临界二氧化碳干燥法生产的纳米结构壳聚糖气凝胶去除废水中的染料

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-10-28 DOI: 10.1016/j.supflu.2024.106442

Alessandra Zanotti, Lucia Baldino, Stefano Cardea, Ernesto Reverchon

{"title":"Dye removal from wastewater using nanostructured chitosan aerogels produced by supercritical CO2 drying","authors":"Alessandra Zanotti, Lucia Baldino, Stefano Cardea, Ernesto Reverchon","doi":"10.1016/j.supflu.2024.106442","DOIUrl":"10.1016/j.supflu.2024.106442","url":null,"abstract":"<div><h3>Background</h3><div>Dyes abundance in wastewaters poses environmental threats, and a cost-effective strategy to remediate dyed water is adsorption: this process could be enhanced using nanostructured sorbents, that expose high surface areas.</div></div><div><h3>Methods</h3><div>In this work, chitosan aerogel adsorbents were produced by supercritical CO<sub>2</sub> assisted drying, working at 200 bar, 35 °C, and CO<sub>2</sub> mass flow rate of 0.8 kg/h. FESEM images proved that the delicate biopolymeric network was intact thanks to near-zero surface tension at the interface between CO<sub>2</sub> and the liquid, and large supercritical fluid diffusivity. Methyl Orange (MO) and Crystal Violet (CV) were used as model anionic and cationic dyes, respectively.</div></div><div><h3>Significant findings</h3><div>Changing dye initial concentration, chitosan aerogel showed different behavior at low and large driving forces, for both CV and MO. Adsorption experiments proved that MO could be not completely removed by aqueous solutions: whereas, CV removal was successful with removal efficiencies up to 89.0 ± 1.1 % from a 10 ppm solution, using 50 mg of aerogel. FT-IR analysis proved that chitosan active sites were more effectively involved with CV rather than MO. Kinetic analysis, carried out for both dyes, showed that the process follows a pseudo-second order kinetics, related to internal mass transfer resistances and diffusion phenomena.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"216 ","pages":"Article 106442"},"PeriodicalIF":3.4,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Determination of process parameters, chemical composition and antioxidant activity of Calycolpus goetheanus (O. Berg) extract obtained by supercritical CO2 测定超临界二氧化碳提取鹅掌楸（O. Berg）的工艺参数、化学成分和抗氧化活性

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-10-28 DOI: 10.1016/j.supflu.2024.106443

Rafael V. Mota , Nayara J.N. da Silva , Eduardo G.O. Menezes , Maria Eduarda F. de Carvalho , Jean M.L. Pinheiro , Diego A. da Silva , Eloisa H. de A. Andrade , Raul N. de Carvalho Junior

{"title":"Determination of process parameters, chemical composition and antioxidant activity of Calycolpus goetheanus (O. Berg) extract obtained by supercritical CO2","authors":"Rafael V. Mota , Nayara J.N. da Silva , Eduardo G.O. Menezes , Maria Eduarda F. de Carvalho , Jean M.L. Pinheiro , Diego A. da Silva , Eloisa H. de A. Andrade , Raul N. de Carvalho Junior","doi":"10.1016/j.supflu.2024.106443","DOIUrl":"10.1016/j.supflu.2024.106443","url":null,"abstract":"<div><div>This pioneering study is the first to explore the extraction of Calycolpus goetheanus using supercritical carbon dioxide (scCO<sub>2</sub>), novel approach to harnessing the bioactive potential of this Amazonian species. By examining extractions under varying temperatures (35 and 45 °C) and pressures (150, 250, and 350 bar), the research not only evaluates the yields but also uncovers significant differences in chemical composition and antioxidant activity compared to traditional hydrodistillation. Notably, the highest yield (2.11 ± 0.07 %) was achieved under 45 °C and 350 bar conditions, where <em>n-</em>heneicosane (34.26 %) was the dominant compound, alongside δ-cadinene, α-terpineol, and other important terpenes and fatty alcohols. The scCO<sub>2</sub> extracts demonstrated superior antioxidant activity compared to hydrodistillation, highlighting the method's ability to preserve and concentrate bioactive compounds. This research advances the field by showcasing scCO<sub>2</sub> as a greener and more efficient extraction technique, with potential applications in pharmaceuticals, cosmetics, and nutraceuticals, opening new pathways for the sustainable exploitation of Amazonian biodiversity.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"216 ","pages":"Article 106443"},"PeriodicalIF":3.4,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Operation parameters of alpaca fiber dyeing with supercritical fluid 超临界流体羊驼毛染色操作参数

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-10-26 DOI: 10.1016/j.supflu.2024.106432

Beatriz G. Orcón Basilio, Delia R. Verástegui Cholán, María E. Tito Silva, Fredy V. Huayta Socantaype, Joel L. Sedano Malpartida, Sandra M. Figueroa Flores, S. Mark Trujillo Navarro, Elizabeth V. Carranza López

{"title":"Operation parameters of alpaca fiber dyeing with supercritical fluid","authors":"Beatriz G. Orcón Basilio, Delia R. Verástegui Cholán, María E. Tito Silva, Fredy V. Huayta Socantaype, Joel L. Sedano Malpartida, Sandra M. Figueroa Flores, S. Mark Trujillo Navarro, Elizabeth V. Carranza López","doi":"10.1016/j.supflu.2024.106432","DOIUrl":"10.1016/j.supflu.2024.106432","url":null,"abstract":"<div><div>Supercritical carbon dioxide (SC-CO2) was used as an alternative method of dyeing alpaca fiber. This study analyzes the colorfastness to laundering as a function of operating parameters. The fiber was subjected to a pretreatment (Impregnation), where it was soaked in an acidulated solution of Nylosan Yellow N-3RL dye, squeezed through a padder roller and then dyed in the SC-CO2 system. Dye concentrations of 4.228 × 10<sup>−4</sup> g/ml and 13.032 × 10<sup>-4</sup> g/ml were tested for pretreatment and the dyeing process was analyzed using a factorial design with variables: pressure (100 and 350 bar), temperature (60 and 90°C) and time (30 and 120 min). The colorfastness to laundering reached 4.5 on the gray scale at 13.032 × 10<sup>–4</sup> g/ml and temperature significantly influenced the process (p-value=0.038). Colorfastness to laundering of 4 at 100 bar, 90°C and 30 min was achieved.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"216 ","pages":"Article 106432"},"PeriodicalIF":3.4,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Calculation of critical endpoints and phase diagrams of highly asymmetric binary systems 计算高度不对称二元体系的临界端点和相图

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-10-26 DOI: 10.1016/j.supflu.2024.106431

Francisco Adrián Sánchez , Martín Cismondi Duarte

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High-pressure liquid impregnation of barbatimão bark extract into biopolymeric membrane composed of PBS/PLA and Cloisite 20 A blend 将巴巴蒂旺树皮提取物高压液体浸渍到由 PBS/PLA 和 Cloisite 20 A 混合物组成的生物聚合物膜中

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-10-18 DOI: 10.1016/j.supflu.2024.106430

Priscilla C. Veggi , Tahmasb Hatami , Leonardo F. Campos , Luciana P. Mazur , Luana E. do Carmo , Lucia H.I. Mei , Juliane Viganó

{"title":"High-pressure liquid impregnation of barbatimão bark extract into biopolymeric membrane composed of PBS/PLA and Cloisite 20 A blend","authors":"Priscilla C. Veggi , Tahmasb Hatami , Leonardo F. Campos , Luciana P. Mazur , Luana E. do Carmo , Lucia H.I. Mei , Juliane Viganó","doi":"10.1016/j.supflu.2024.106430","DOIUrl":"10.1016/j.supflu.2024.106430","url":null,"abstract":"<div><div>Renowned for its medicinal properties, barbatimão bark extract contains bioactive compounds susceptible to degradation, necessitating their safeguarding within a stable matrix for diverse biomedical applications. This study investigates using high-pressure liquid impregnation (HPLI) to load barbatimão extract into biopolymeric membranes at 30, 45, and 60 °C, and 11 MPa. HPLI combines the simplicity of direct immersion with improved mass transfer rates under high pressure. Biopolymeric membranes made from poly(butylene succinate) (PBS), poly(lactic acid) (PLA), and Cloisite 20 A (C20A) in a 50/45/5 (v/v) composition were created using electrospinning. Comparative analysis with conventional methods, along with evaluation of impregnated membrane properties using SEM, FTIR, and thermogravimetric analysis, demonstrated the effectiveness of HPLI. HPLI yielded markedly higher phenolic compound loadings, peaking at 43.79 mg ETA/g membrane at 11 MPa and 45 °C over 6 h, compared to 25.44 mg ETA/g membrane with conventional impregnation at ambient pressure and 45 °C over the same duration.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"216 ","pages":"Article 106430"},"PeriodicalIF":3.4,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Effect of supercritical CO2 extraction as pretreatment to obtain C-phycocyanin from spirulina (Arthrospira maxima) 超临界二氧化碳萃取作为从螺旋藻（Arthrospira maxima）中获取 C-花青素的预处理的效果

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-10-16 DOI: 10.1016/j.supflu.2024.106428

J.A. López-Limón , A.S. Hernández-Cázares , J.V. Hidalgo-Contreras , G. Romero - De la Vega , R.A. Mellado-Pumarino , M.A. Ríos-Corripio

{"title":"Effect of supercritical CO2 extraction as pretreatment to obtain C-phycocyanin from spirulina (Arthrospira maxima)","authors":"J.A. López-Limón , A.S. Hernández-Cázares , J.V. Hidalgo-Contreras , G. Romero - De la Vega , R.A. Mellado-Pumarino , M.A. Ríos-Corripio","doi":"10.1016/j.supflu.2024.106428","DOIUrl":"10.1016/j.supflu.2024.106428","url":null,"abstract":"<div><div>C-phycocyanin (CPC) is a phycobiliprotein present in spirulina, which, due to its blue color, non-toxic nature, fluorescent and antioxidant properties, is of interest in the food and pharmaceutical industries. Different methods of extraction and stabilization are being investigated, including supercritical CO<sub>2</sub> extraction, a method applied to obtain bioactive compounds from plant matrices. In this work, the effect of applying supercritical CO<sub>2</sub> as pretreatment for the extraction of CPC at different parameters (pressure, temperature, use of cosolvent) was evaluated. Best pretreatment conditions to obtain the highest purity were at 17 MPa and 45 °C, considering it reagent grade. When comparing UV and FTIR spectra of the raffinates, a similarity was obtained with the analytical standard, with the presence of a band at 620 nm in UV and for FTIR a band at 1650 and 1540 cm<sup>−1</sup> that corresponds to amide I and amide II, corroborating their presence and the structural characteristics.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"215 ","pages":"Article 106428"},"PeriodicalIF":3.4,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142525919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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d-Limonene extraction from Citrus reticulata Blanco wastes with compressed propane and supercritical CO2 用压缩丙烷和超临界二氧化碳从布兰科柑橘废料中提取 d-柠檬烯

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-10-16 DOI: 10.1016/j.supflu.2024.106426

Marcelle Guth de Freitas Batista, Giulia Herbst, Mônica Beatriz Kolicheski, Fernando A.P. Voll, Marcos L. Corazza

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Supercritical CO2 as a green technology for carotenoids-rich virgin palm oil production: Process optimization, kinetics and thermodynamics modeling 超临界二氧化碳作为富含类胡萝卜素的初榨棕榈油生产的绿色技术：工艺优化、动力学和热力学建模

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-10-16 DOI: 10.1016/j.supflu.2024.106429

Nik Suhaimi Mat Hassan , Md Mokarram Badsha , Mark Harris Zuknik , Shabib Al Rashdi , Ahmad Naim Ahmad Yahaya , Venugopal Balakrishanan , Azhar Mat Easa , Md Sohrab Hossain

{"title":"Supercritical CO2 as a green technology for carotenoids-rich virgin palm oil production: Process optimization, kinetics and thermodynamics modeling","authors":"Nik Suhaimi Mat Hassan , Md Mokarram Badsha , Mark Harris Zuknik , Shabib Al Rashdi , Ahmad Naim Ahmad Yahaya , Venugopal Balakrishanan , Azhar Mat Easa , Md Sohrab Hossain","doi":"10.1016/j.supflu.2024.106429","DOIUrl":"10.1016/j.supflu.2024.106429","url":null,"abstract":"<div><div>The experimental conditions of supercritical carbon dioxide (scCO<sub>2</sub>) extraction of virgin palm oil (VPO) from oil palm mesocarp fiber (OPMF) were optimized using the Response Surface Methodology (RSM). Results showed that a maximum of 28.68 % of VPO extraction was obtained at the optimal experimental conditions of scCO<sub>2</sub> extraction: pressure of 31 MPa, temperature of 340 K, and extraction time of 80 min. The second-order rate equation, <em>Arrhenius</em> equation and <em>Eyring</em> theory were employed to assess the kinetics behaviour, activation energy and thermodynamics behaviour of scCO<sub>2</sub> extraction of VPO from oil palm mesocarp fiber. The lower activation energy value (12.17 kJ/mol) of scCO<sub>2</sub> for the extraction of VPO from OPMF indicates that the scCO<sub>2</sub> extraction technology is less dependent on temperature during the extraction of VPO from OPMF. The physicochemical properties and fatty acids compositions analyses reveal that the scCO<sub>2</sub> extracted VPO contains high carotenoids content (982 μg/g), low free fatty acids content (0.31 wt%), higher oxidative stability and higher unsaturated fatty acids content.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"215 ","pages":"Article 106429"},"PeriodicalIF":3.4,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142525918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Determination of global yield isotherms of macaúba (Acrocomia aculeata) extract using supercritical CO2 and its biological potential 利用超临界二氧化碳确定玛咖巴（Acrocomia aculeata）提取物的全球产量等温线及其生物潜力

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-10-15 DOI: 10.1016/j.supflu.2024.106427

Giselle Cristine Melo Aires , Kelly Roberta Pinheiro Pantoja , Eduardo Gama Ortiz Menezes , Jean Maurício Leão Pinheiro , Verônica Maria Souza Bezerra , Maria Eduarda Ferraz de Carvalho , Raul Nunes de Carvalho Junior

{"title":"Determination of global yield isotherms of macaúba (Acrocomia aculeata) extract using supercritical CO2 and its biological potential","authors":"Giselle Cristine Melo Aires , Kelly Roberta Pinheiro Pantoja , Eduardo Gama Ortiz Menezes , Jean Maurício Leão Pinheiro , Verônica Maria Souza Bezerra , Maria Eduarda Ferraz de Carvalho , Raul Nunes de Carvalho Junior","doi":"10.1016/j.supflu.2024.106427","DOIUrl":"10.1016/j.supflu.2024.106427","url":null,"abstract":"<div><div>This study investigates the effectiveness of macaúba oil extraction using supercritical carbon dioxide, focusing on determining operational parameters such as temperature and pressure that maximize the quality and yield of the extract obtained. The extraction was carried out using freeze-dried macaúba pulp, under varying conditions of pressure and temperature. The overall yield isotherms of macaúba oil obtained, the solubility of the solute, composition of fatty acids, triglycerides, phenolic compounds, in addition to the antioxidant capacity and antimicrobial activity, were evaluated, before and after extraction. The results demonstrated that, under the conditions evaluated, the extraction process achieved maximum oil yields of 24.4 %, with a predominance of unsaturated acids rich in antioxidants and high concentrations of oleic acid (64.12 %), β-carotene (80.06 mg/kg) and α-tocopherol (114.66 mg/100 g of oil). This promising method offers a sustainable alternative for the production of compounds with high nutritional value, highlighting its potential for industrial applications.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"215 ","pages":"Article 106427"},"PeriodicalIF":3.4,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142525915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Numerical analysis of mixing performance in Y-junction mixers and its impact on yields from supercritical water hydrolysis Y 型连接混合器的混合性能及其对超临界水水解产率影响的数值分析

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-10-15 DOI: 10.1016/j.supflu.2024.106425

Gyudong Kim , Sooin Kim , Hanseob Jeong , Jaewon Chung

引用次数: 0