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Journal of Supercritical Fluids最新文献

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Sustainable utilization of disposed photovoltaic backsheet to microcellular thermal-insulation foam through two-steps supercritical CO2 foaming
IF 3.4 3区 工程技术
Journal of Supercritical Fluids Pub Date : 2025-04-02 DOI: 10.1016/j.supflu.2025.106616
Miao Lu , Jiyun Jia , Quan Gao , Mingxu Xia , Jin Li , Jun Wang , Chul B. Park , Ruiyan Zhang
{"title":"Sustainable utilization of disposed photovoltaic backsheet to microcellular thermal-insulation foam through two-steps supercritical CO2 foaming","authors":"Miao Lu ,&nbsp;Jiyun Jia ,&nbsp;Quan Gao ,&nbsp;Mingxu Xia ,&nbsp;Jin Li ,&nbsp;Jun Wang ,&nbsp;Chul B. Park ,&nbsp;Ruiyan Zhang","doi":"10.1016/j.supflu.2025.106616","DOIUrl":"10.1016/j.supflu.2025.106616","url":null,"abstract":"<div><div>Upcycling of disposed photovoltaic backsheets plays important role in sustainable development of the photovoltaic industrial chain. However, the melt strength of the main component (rPET) decreased dramatically after long-term outside exposure, it is still challenging to develop a rPET-based microcellular thermal-insulation foam. Herein, we utilize a crystalline-amorphous network (CAN) strategy to enhance rPET melt strength and develop microcellular thermal-insulation material via supercritical CO<sub>2</sub> (scCO<sub>2</sub>) foaming technology. The tunable CAN fractions can be achieved by manipulation of crystallinity and rigid amorphous fraction (RAF) via annealing processes. The crystallinity was increased to 31.9 % for the sample annealed at the temperature of 115 °C, while the RAF value rose to 44.6 %. Consequently, the zero-shear complex viscosity (<span><math><msubsup><mrow><mi>η</mi></mrow><mrow><mn>0</mn></mrow><mrow><mo>*</mo></mrow></msubsup></math></span>) of rPET samples increased from 164.2 Pa·s to 1826.6 Pa·s with increased CAN fractions up to 76.5 %, demonstrating a typical shear-thinning behavior. Combined with the scCO<sub>2</sub> foaming technology, the void fraction can be tuned from 31.6 % to 83.5 %. The cell density was optimized, reaching a high value of 1.12 × 10<sup>9</sup> cells/cm<sup>3</sup> with the CAN fraction of 21.5 %. Furthermore, the thermal conductivity decreased from 254 mW•m<sup>−1</sup>K<sup>−1</sup> for a solid rPET sample to 47.3 mW•m<sup>−1</sup>K<sup>−1</sup> for thermal-insulation rPET foam. As a proof of concept, this work provides a novel route for resource utilization of disposed photovoltaic backsheet.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"222 ","pages":"Article 106616"},"PeriodicalIF":3.4,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792481","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
Formation of layered cell structure in silicone rubber foam via supercritical CO2-induced crosslinking
IF 3.4 3区 工程技术
Journal of Supercritical Fluids Pub Date : 2025-04-01 DOI: 10.1016/j.supflu.2025.106614
Zuoze Fan, Bo Wang, Lei Zhang, Ruyun Xu, Guangxian Li, Xia Liao
{"title":"Formation of layered cell structure in silicone rubber foam via supercritical CO2-induced crosslinking","authors":"Zuoze Fan,&nbsp;Bo Wang,&nbsp;Lei Zhang,&nbsp;Ruyun Xu,&nbsp;Guangxian Li,&nbsp;Xia Liao","doi":"10.1016/j.supflu.2025.106614","DOIUrl":"10.1016/j.supflu.2025.106614","url":null,"abstract":"<div><div>Crosslinking behavior of liquid silicone rubber (LSR) in CO<sub>2</sub> is important for regulation of cell structure of LSR foam. In LSR system, introduction of CO<sub>2</sub> can change the crosslinking reaction, but the effect of the crosslinking in CO<sub>2</sub> on foaming behavior is not clear. Here, LSR was saturated at 40 °C and 10 MPa CO<sub>2</sub> in order to introducing more CO<sub>2</sub> to investigate crosslinking in CO<sub>2</sub> and foaming behavior. It was found that the obtained LSR foam had a layered cell structure, because CO<sub>2</sub> induced the formation of crosslinking layer, and hindered further crosslinking between layers by increasing the distance between layers. Compressive stress perpendicular to the layer of LSR foam was 3.1 times higher than that along the layer when the strain was 50 %. This study provides a new idea for the regulation of cell structure of thermosetting polymers.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"222 ","pages":"Article 106614"},"PeriodicalIF":3.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768563","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
Dissolution behavior of different additives and lubricating oil blends in liquid and supercritical CO2
IF 3.4 3区 工程技术
Journal of Supercritical Fluids Pub Date : 2025-04-01 DOI: 10.1016/j.supflu.2025.106615
Nathalie Piche, Stefan Pollak, Marcus Petermann
{"title":"Dissolution behavior of different additives and lubricating oil blends in liquid and supercritical CO2","authors":"Nathalie Piche,&nbsp;Stefan Pollak,&nbsp;Marcus Petermann","doi":"10.1016/j.supflu.2025.106615","DOIUrl":"10.1016/j.supflu.2025.106615","url":null,"abstract":"<div><div>Cryogenic Minimum Quantity Lubrication (cMQL) with oil and liquid or supercritical CO<sub>2</sub> provides efficient cooling and lubrication for machining difficult-to-cut materials. For drilling, oil and CO<sub>2</sub> should be in a single-phase state to avoid separation in the fast-rotating drill spindle before expanding at the drill tip. This article presents the phase behavior, dissolution kinetics and expansion behavior of three sulfur-based additives and three additive-oil blends with CO<sub>2</sub>. Phase behavior is analyzed at 25 °C, 40 °C, and 60 °C between 60 bar and 250 bar. Dissolution kinetics are observed in a transparent flow cell and correlated with phase behavior. Trisulfide and polysulfide additives show high solubility and rapid homogenization, while a sulfurized methyl ester exhibits insufficient dissolution behavior. Oil blends reflect the behavior of their components. Expansion of the oil-CO<sub>2</sub> mixtures at the drill tip was investigated using a high-speed camera. A fine, homogeneous spray was observed under all conditions.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"223 ","pages":"Article 106615"},"PeriodicalIF":3.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143844958","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
Enhanced cyclic compression performance of polyolefin elastomer foams with novel open-cell structures through mixed gases regulation
IF 3.4 3区 工程技术
Journal of Supercritical Fluids Pub Date : 2025-04-01 DOI: 10.1016/j.supflu.2025.106617
Daoen Yu, Shaozhe Shi, Fangfang Zou, Bo Wang, Guangxian Li, Xia Liao
{"title":"Enhanced cyclic compression performance of polyolefin elastomer foams with novel open-cell structures through mixed gases regulation","authors":"Daoen Yu,&nbsp;Shaozhe Shi,&nbsp;Fangfang Zou,&nbsp;Bo Wang,&nbsp;Guangxian Li,&nbsp;Xia Liao","doi":"10.1016/j.supflu.2025.106617","DOIUrl":"10.1016/j.supflu.2025.106617","url":null,"abstract":"<div><div>Polyolefin elastomer (POE) foam with a novel open-cell structure, termed the island open-cell structure, was fabricated by melt blending two kinds of POE with distinct melting points, followed by foaming using a mixture of CO₂ and N₂ as blowing agents. The formation and evolution mechanisms of the unique open-cell structure were elucidated through gas solubility test and high-pressure rheology, focusing on cell nucleation and growth behaviors. A controlled transition from the island open-cell structure to semi-continuous and continuous open-cell structures was achieved through the optimized foaming process. The effect of different open-cell structures on the compressive performance of POE foams was investigated through cyclic compression tests. The result indicates that POE foam with the island open-cell structure exhibits the highest compressive strength among semi-continuous open-cell, continuous open-cell and closed-cell structures.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"222 ","pages":"Article 106617"},"PeriodicalIF":3.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768562","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
Debittering Andean lupin beans via supercritical carbon dioxide extraction
IF 3.4 3区 工程技术
Journal of Supercritical Fluids Pub Date : 2025-03-31 DOI: 10.1016/j.supflu.2025.106612
Miao Yu, Kai Kniepkamp, Beau Boonstra, Jan Pieter Thie, Rob J.F. van Haren
{"title":"Debittering Andean lupin beans via supercritical carbon dioxide extraction","authors":"Miao Yu,&nbsp;Kai Kniepkamp,&nbsp;Beau Boonstra,&nbsp;Jan Pieter Thie,&nbsp;Rob J.F. van Haren","doi":"10.1016/j.supflu.2025.106612","DOIUrl":"10.1016/j.supflu.2025.106612","url":null,"abstract":"<div><div>Supercritical carbon dioxide (scCO<sub>2</sub>) extraction was used to debitter Andean lupin beans (<em>Lupinus mutabilis</em>, SWEET) by separating quinolizidine alkaloids. ScCO<sub>2</sub> alone was found ineffective. Alkaloids were removed with i) a specific amount of polar cosolvent, ii) a pre-wetting of the bean flour before extraction, and iii) excessive polar cosolvent. For i) and ii), about 30 % and 60 % of alkaloids could be removed respectively, with limited effects of increasing pressure or temperature. For iii), multiple layers were observed along the sample bed. In the layer closest to the scCO<sub>2</sub> inlet, more than 98 % of alkaloids were removed. Thus, the strategy to remove the alkaloids was to extract them using excessive polar media. ScCO<sub>2</sub> as an apolar medium served to extract alkaloids with the alkalization of the plant samples but with limited performance.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"223 ","pages":"Article 106612"},"PeriodicalIF":3.4,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143821054","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
Semi-continuous hydrothermal waste valorization: Facile protocol for monomer recovery from poly(bisphenol A carbonate)
IF 3.4 3区 工程技术
Journal of Supercritical Fluids Pub Date : 2025-03-29 DOI: 10.1016/j.supflu.2025.106610
János Béri , Mihály Hegyi , Blanka Tóth , Edit Székely
{"title":"Semi-continuous hydrothermal waste valorization: Facile protocol for monomer recovery from poly(bisphenol A carbonate)","authors":"János Béri ,&nbsp;Mihály Hegyi ,&nbsp;Blanka Tóth ,&nbsp;Edit Székely","doi":"10.1016/j.supflu.2025.106610","DOIUrl":"10.1016/j.supflu.2025.106610","url":null,"abstract":"<div><div>This study introduces a novel semi-continuous hydrothermal process for the chemical recycling of poly(bisphenol A carbonate) (PC), focusing on the selective cleavage of bisphenol A (BPA) while minimizing its decomposition. Key operational parameters and reactor design were established through calculations using available kinetic and phase equilibrium data, ensuring that BPA residence time remained within acceptable limits. The design features continuous BPA removal to prevent secondary decomposition. Flow patterns of the system were analyzed using residence time distribution and mathematical deconvolution. At a temperature of 300 °C, pressure of 10 MPa, and a decomposition time of 70 min, the process achieved a 95 % yield of BPA within an average water residence time of approximately 1 minute. High purity of BPA was confirmed through chromatography, NMR spectroscopy, and thermal analysis. The results support a pseudo-solid kinetic behavior for PC hydrolysis, besides establishing a sustainable and efficient pathway for chemical recycling of PC.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"223 ","pages":"Article 106610"},"PeriodicalIF":3.4,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143824242","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
Reevaluating CO2 solubility thresholds in PMMA nanocellular foam formation and its effect on cell structure
IF 3.4 3区 工程技术
Journal of Supercritical Fluids Pub Date : 2025-03-29 DOI: 10.1016/j.supflu.2025.106611
Kiday Fiseha Gebremedhin , Yu-Ting Ho , Solomon Dufera Tolcha, Nigus Maregu Demewoz, Shu-Kai Yeh
{"title":"Reevaluating CO2 solubility thresholds in PMMA nanocellular foam formation and its effect on cell structure","authors":"Kiday Fiseha Gebremedhin ,&nbsp;Yu-Ting Ho ,&nbsp;Solomon Dufera Tolcha,&nbsp;Nigus Maregu Demewoz,&nbsp;Shu-Kai Yeh","doi":"10.1016/j.supflu.2025.106611","DOIUrl":"10.1016/j.supflu.2025.106611","url":null,"abstract":"<div><div>Nanocellular foams have recently received much interest due to their fascinating properties. Previous studies have shown that molecular weight and CO<sub>2</sub> solubility are critical in obtaining nanocellular foams from commercial-grade polymers, with accepted wisdom requiring solubility exceeding 30 wt% for nanocellular PMMA generation. This study challenges this assumption by demonstrating successful production of nanocellular PMMA at significantly lower solubility under moderate saturation conditions (13.79 MPa and 20 °C). Experiments with reagent-grade PMMA of 136 kg/mol weight-average molecular weight produced nanocellular PMMA with an average cell size of 140 nm and cell density of 1.72 × 10<sup>15</sup> cells/cm<sup>3</sup> at CO<sub>2</sub> solubility of 25.89 wt%. Various prediction models for glass transition temperature of CO<sub>2</sub>-saturated PMMAs exhibited different accuracies between reagent-grade versus commercial-grade PMMAs. The relative density reached minimum values at foaming-saturation temperature difference of 60 °C to 80 °C. Increasing foaming temperature decreased solid skin thickness, while higher saturation temperature increased transition layer thickness.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"222 ","pages":"Article 106611"},"PeriodicalIF":3.4,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792800","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
Biological activities in supercritical CO₂-extracted cannabis: Comparison with conventional extraction method
IF 3.4 3区 工程技术
Journal of Supercritical Fluids Pub Date : 2025-03-27 DOI: 10.1016/j.supflu.2025.106606
Joonhyung Kim , Seung Hee Yang , Sang Woo Seo , Seung Kyu Han , Seung Hyun Cho , Ikseong Sur , Jung Han Yoon Park , Ki Won Lee , Youn-Woo Lee
{"title":"Biological activities in supercritical CO₂-extracted cannabis: Comparison with conventional extraction method","authors":"Joonhyung Kim ,&nbsp;Seung Hee Yang ,&nbsp;Sang Woo Seo ,&nbsp;Seung Kyu Han ,&nbsp;Seung Hyun Cho ,&nbsp;Ikseong Sur ,&nbsp;Jung Han Yoon Park ,&nbsp;Ki Won Lee ,&nbsp;Youn-Woo Lee","doi":"10.1016/j.supflu.2025.106606","DOIUrl":"10.1016/j.supflu.2025.106606","url":null,"abstract":"<div><div>This study evaluates the extraction yields, cannabinoid profiles, and physiological effects of <em>Cannabis sativa</em> L. (Purple 52) using three methods: supercritical CO₂ (scCO₂), Soxhlet, and maceration. Validated high-performance liquid chromatography (HPLC) analysis confirmed cannabidiol (CBD) and cannabidiolic acid (CBDa) as the dominant cannabinoids in hemp extracts, and decarboxylation of hemp samples at 140℃ for 1 hour achieved a CBD to CBD+CBDa ratio of over 99 %. The scCO₂ method with ethanol as a co-solvent demonstrated the highest CBD yield, yielding 37.1 % higher CBD content compared to neat scCO₂ extraction. Physiological assessments revealed scCO₂ extracts had superior antioxidant and anti-inflammatory activities, with the highest 2,2′-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity and flavonoid content. Furthermore, scCO₂ extracts significantly suppressed interleukin-1β (IL-1β) and interleukin-6 (IL-6) levels in lipopolysaccharide (LPS)-induced RAW 264.7 cells, demonstrating potent anti-inflammatory effects.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"222 ","pages":"Article 106606"},"PeriodicalIF":3.4,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143777052","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
Numerical analysis of pseudo-phase transition behaviors of supercritical CO2 flow in a centrifugal compressor
IF 3.4 3区 工程技术
Journal of Supercritical Fluids Pub Date : 2025-03-27 DOI: 10.1016/j.supflu.2025.106608
Huimei Wang , Jinliang Xu , Lin Chen
{"title":"Numerical analysis of pseudo-phase transition behaviors of supercritical CO2 flow in a centrifugal compressor","authors":"Huimei Wang ,&nbsp;Jinliang Xu ,&nbsp;Lin Chen","doi":"10.1016/j.supflu.2025.106608","DOIUrl":"10.1016/j.supflu.2025.106608","url":null,"abstract":"<div><div>The operational instability of supercritical CO₂ compressors near the pseudo-critical line is investigated, with a focus on key regions where pseudo-phase transitions occur. The efficiency, pressure ratio, and fluid property variations of the compressor are analyzed under three different inlet conditions (pseudo-liquid, pseudo-gas, and gas states) at rotating speeds of 30000–70000 rpm. The main findings are as follows: (1) Pseudo-phase transition mainly occurs at the blade tip under pseudo-liquid inlet conditions, forming low-density and high-entropy pseudo-gas clusters; (2) The pseudo-phase transition induces the vortex leading to the instability and low efficiency of the compressor (the worst 30–60 % of the efficiency); (3) The pseudo-phase transition caused by acceleration leads to significant density decrease and a sharp rise in the compressibility factor, weakening fluid compression performance. Based on these results, several strategies for better operation of the compressor are also discussed in aspects of the working conditions and the design of the impeller.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"222 ","pages":"Article 106608"},"PeriodicalIF":3.4,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143737768","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
Enhanced decolorization behaviors of colored PET textiles by supercritical carbon dioxide as part of the recycling process
IF 3.4 3区 工程技术
Journal of Supercritical Fluids Pub Date : 2025-03-27 DOI: 10.1016/j.supflu.2025.106607
Teng Huang, Xin Wei, Shaoqing Qu, Weizhong Zheng, Ling Zhao
{"title":"Enhanced decolorization behaviors of colored PET textiles by supercritical carbon dioxide as part of the recycling process","authors":"Teng Huang,&nbsp;Xin Wei,&nbsp;Shaoqing Qu,&nbsp;Weizhong Zheng,&nbsp;Ling Zhao","doi":"10.1016/j.supflu.2025.106607","DOIUrl":"10.1016/j.supflu.2025.106607","url":null,"abstract":"<div><div>Currently, most colored Polyethylene terephthalate (PET) textiles are not recycled, because the presence of dyes leads to uncontrollable coloration in chemically recycled PET products. Traditional solvent-based decolorization faces scalability challenges due to high solvent use, low efficiency, and environmental impact. This study explores scCO₂ to enhance solvent decolorization by reducing PET-dye interactions. An scCO₂-assisted decolorization process was established in a batch reactor. Optimal conditions were identified at 8 MPa, 90 °C, and solid-to-liquid ratio of 1:20, enabling 86 % disperse dye removal within 20 min. Under higher energy consumption conditions (1 h, 120 °C), the single-cycle decolorization efficiency reached 97 %. Considering the liquid phase renewal in a continuous process, repeated decolorization of the treated PET enabled complete dye removal within three cycles. The kinetics were studied with activation energy calculated. Additionally, the process did not change the structure of stripping solvents and disperse dyes, allowing for subsequent recycling and reuse.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"222 ","pages":"Article 106607"},"PeriodicalIF":3.4,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143737764","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
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