Article
Engineering, Chemical
Edgar Uquiche, Sonia Millao, Jose M. del Valle
Summary: Extrusion as a densification process had a significant negative effect on all responses in SC-CO2 extracted red pepper oleoresin. Regardless of substrate pretreatment, the extraction yield and carotenoid yield were maximized at extreme conditions of 60 degrees C and 50 MPa. The extractable colour and antioxidant activity showed positive correlation, while oxidative index showed negative correlation with carotenoid content of SC-CO2 extracts.
JOURNAL OF FOOD ENGINEERING
(2022)
Article
Food Science & Technology
Eva Tejedor-Calvo, Sergi Garcia-Barreda, Sergio Sanchez, Diego Morales, Cristina Soler-Rivas, Alejandro Ruiz-Rodriguez, Maria Angeles Sanz, Ana Pilar Garcia, Asuncion Morte, Pedro Marco
Summary: Supercritical fluid extraction with CO2 was used to obtain natural truffle aroma from black truffle, with optimal conditions being 30 MPa pressure and 3 hours extraction time. Addition of grapeseed oil enhanced trapping key truffle aromatic compounds, such as 2,3-butanodione, 2-methyl-1-butanol, octanal, and dimethyl disulphide. Olfactometry study revealed ethyl pentanoate, 1-hexen-3-one, and ethyl hexanoate as the main compounds in the extracts samples.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Applied
Simon Vlad Luca, Thomas Kittl, Mirjana Minceva
Summary: This study systematically evaluated the influence of different combinations of pressures and temperatures on the extraction of key compounds from black pepper using supercritical CO2. Terpenes were easily extracted under all conditions, while higher pressures were required for efficient extraction of piperamides. The kinetics of extraction for piperine, piperettine, pellitorine, guineensine, and N-isobutyl-2,4,14-eicosatrienamide were linked to structural features. The results can be used to design a two-step pressure gradient SC-CO2 process for obtaining terpene-rich and piperamide-rich products.
Article
Multidisciplinary Sciences
Gowhar Ahmad Naikoo, Mohammad Saeedi Zadegan, Mona Zamani Pedram, Israr Ul Hassan, Waqar Ahmed, Golshan Yousefi Attar
Summary: The study found that using the DPTG model coupled with vdW2 in supercritical carbon dioxide extraction of Vitamin A can more accurately correlate with the solubility data, making it a more suitable method compared to others.
SCIENTIFIC REPORTS
(2021)
Article
Biochemistry & Molecular Biology
Livia Silva Mateus, Juliete Martins Dutra, Rogerio Favareto, Edson Antonio da Silva, Leandro Ferreira Pinto, Camila da Silva, Lucio Cardozo-Filho
Summary: This study extracts pequi almond oil using supercritical CO2 and determines the optimal extraction conditions. The fatty acids and active compounds in the oil are characterized.
Article
Biochemistry & Molecular Biology
Renata Baranauskiene, Petras Rimantas Venskutonis
Summary: The study developed a method for extracting fragrance substances from Narcissus poeticus using pure supercritical CO2 and a mixture of CO2 with 5% ethanol. The results showed that the extracts contained various volatile compounds, including benzyl benzoate, alpha-terpineol, and limonene. The findings are significant for the further extraction of fragrance substances from Narcissus poeticus using supercritical CO2.
Article
Biochemistry & Molecular Biology
Mayya P. Razgonova, Elena I. Cherevach, Lyudmila A. Tekutyeva, Sergey A. Fedoreyev, Natalia P. Mishchenko, Darya V. Tarbeeva, Ekaterina N. Demidova, Nikita S. Kirilenko, Kirill Golokhvast
Summary: Three methods, including supercritical CO2 extraction, maceration with EtOH and maceration with MeOH, were used to extract biologically active substances from the heartwood of M. amurensis. Supercritical extraction was found to be the most effective method with the highest yield. The optimal conditions for extraction were determined to be a pressure of 100 bar and a temperature of 55 degrees C. Tandem mass spectrometry was applied to identify 66 different biologically active components in M. amurensis extracts, including 22 polyphenols that were identified for the first time in the genus Maackia.
Article
Biochemistry & Molecular Biology
Syaifullah Muhammad, Abdul H. P. S. Khalil, Shazlina Abd Hamid, Mohammed Danish, M. Marwan, Yunardi Yunardi, C. K. Abdullah, M. Faisal, Esam Bashir Yahya
Summary: This study investigated the extraction of patchouli using supercritical carbon dioxide. Higher yields and better quality of crude patchouli oil were obtained under specific pressure and temperature conditions. The main bioactive compounds identified were patchouli alcohol, Azulene, delta-Guaiene, and Seychellene.
Article
Food Science & Technology
Natka Curko, Katarina Lukic, Ana Jurinjak Tusek, Sandra Balbino, Tomislava Vukus Pavicic, Marina Tomasevic, Ivana Radojcic Redonikovic, Karin Kovac Ganic
Summary: The aim of this study was to increase the value of the oil fraction of grape wine pomace by improving oil yield and maintaining quality. Two green extraction methods, including supercritical CO2 extraction and pulsed electric fields assisted supercritical CO2 extraction, were compared with conventional cold pressing. The parameters of pulsed electric fields pretreatment and supercritical CO2 extraction played a crucial role in improving extraction yield and selectively extracting sterols and nonflavonoids.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Pharmacology & Pharmacy
Lucia Baldino, Mariarosa Scognamiglio, Ernesto Reverchon
Summary: This study successfully reduced harmful solvent levels in two corticosteroid drugs through supercritical CO2 extraction, where CO2 density plays a key role. Operating under specific pressure and temperature conditions for extraction can effectively lower organic solvent residues.
Article
Nutrition & Dietetics
Shipeng Yin, Liqiong Niu, Mario Shibata, Yuanfa Liu, Tomoaki Hagiwara
Summary: This study explores the optimal preparation technology of fucoxanthin from waste Undaria pinnatifida stems using supercritical carbon dioxide methods and provides approaches for the extraction and preparation of bioactive compounds from waste seaweed. The results confirm the effectiveness of supercritical fluid extraction technology in preparing fucoxanthin from waste marine resources.
FRONTIERS IN NUTRITION
(2022)
Review
Agriculture, Multidisciplinary
Rafael Chelala Moreira, Rayanne Priscilla Franca de Melo, Julian Martinez, Mario Roberto Marostica Junior, Glaucia Maria Pastore, Holger Zorn, Juliano Lemos Bicas
Summary: This review explores the potential of using supercritical carbon dioxide (SC-CO2) in the flavor industry for extraction, fractionation, and synthesis of aroma esters. The advantages of SC-CO2, such as mild reaction conditions, time savings, reduced toxicity concerns, higher sustainability, and adjustable solvent selectivity, are compared to traditional methods. The findings suggest that SC-CO2 has the potential to selectively obtain compounds applicable in aroma technology and related fields.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Review
Biochemistry & Molecular Biology
Soultana Tzima, Ioulia Georgiopoulou, Vasiliki Louli, Kostis Magoulas
Summary: Supercritical CO2 extraction is an environmentally friendly method that combines economic advantages. Microalgae, as a readily available biomass, can provide a wide range of valuable compounds for various industries such as food, cosmetics, pharmaceuticals, and biofuels. This study extensively examines the literature on supercritical fluid extraction (SFE) of microalgae, with a focus on the recovery of carotenoids, chlorophylls, lipids, and fatty acids, as well as the bioactivity of the extracts. The study also includes kinetic models for describing SFE processes, experimental design, biomass pretreatment methods before SFE, and comparison with other extraction techniques.
Review
Chemistry, Physical
Ming Zhou, Ruifeng Ni, Yaxiong Zhao, Jiangyu Huang, Xinyi Deng
Summary: Supercritical carbon dioxide thickeners have promising applications in oil and gas production for improved oil recovery. However, challenges such as low viscosity issues present obstacles in fracturing and flooding processes.
Article
Chemistry, Multidisciplinary
Aleksandra Gavaric, Senka Vidovic, Krunoslav Aladic, Stela Jokic, Jelena Vladic
Summary: Supercritical carbon dioxide and Soxhlet extraction were used to extract Marrubium vulgare, with varying process conditions impacting extraction yield and chemical composition. Supercritical extraction achieved higher yields and different chemical profiles compared to Soxhlet extraction. The dominant compound marrubiin was found in supercritical extracts but not in conventional extracts.
Article
Engineering, Chemical
Nicky Rahmana Putra, Dwila Nur Rizkiyah, Zuhaili Idham, Liza Mohd Salleh, Siti Machmudah, Mohd Azizi Che Yunus
Summary: In this paper, a new solubility model was proposed to correlate the solubility of plant extracts in SC-CO2 with ethanol. The new model showed an overall percentage of average absolute relative deviation of 12.13% and an average coefficient of determination (R-2) of 0.89, demonstrating its excellent accuracy and capability in predicting solute solubility in the presence of ethanol as a co-solvent. Comparisons with published models further confirmed the new model's exceptional fitting capabilities.
CHEMICAL ENGINEERING COMMUNICATIONS
(2021)
Article
Engineering, Chemical
Hideki Kanda, Kazuma Oishi, Siti Machmudah, Wahyudiono, Motonobu Goto
Summary: Using DME as a solvent for extracting polyphenol resveratrol and piceid from raw Japanese knotweed yielded better results compared to conventional ethanol extraction, without the need for drying and cell wall disruption. The Hansen solubility parameters of DME are closer to ethanol than water, making it suitable for extracting antioxidants from raw plant material. This method also allows for efficient extraction of water and organic extracts from the raw Japanese knotweed.
ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Food Science & Technology
Nicky Rahmana Putra, Dwila Nur Rizkiyah, Ahmad Syami Zaini, Siti Machmudah, Mohd Azizi Che Yunus
Summary: This research optimized the extraction of catechin and epicatechin from peanut skin using supercritical carbon dioxide with co-solvent ethanol. RSM was successfully applied to determine the optimal extraction conditions for high quantity of catechin and epicatechin. The solubility of catechin and epicatechin was accurately predicted by the Putra model, with a solubility range and AARD within acceptable limits.
JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION
(2021)
Article
Engineering, Multidisciplinary
Wahyudiono, Shota Kawai, Mardiansyah Mardis, Siti Machmudah, Hideki Kanda, Yaping Zhao, Motonobu Goto
Summary: Bimetallic nanoparticles were formed by pulsed laser ablation on a gold titanium film, with experiments conducted at room temperature. The study demonstrated the dispersion of gold, titanium, and gold-titanium nanoparticles in the aqueous solution products.
ALEXANDRIA ENGINEERING JOURNAL
(2021)
Article
Food Science & Technology
Nicky Rahmana Putra, Dwila Nur Rizkiyah, Ahmad Hazim Abdul Aziz, Siti Machmudah, Jumakir Jumakir, Waluyo Waluyo, Mohd Azizi Che Yunus
Summary: This study aims to extract high procyanidins and proanthocyanidins from peanut skins using supercritical carbon dioxide. Through response surface methodology, the optimal conditions for extraction were determined, leading to successful recovery of these valuable compounds. The Chrastil model showed the best correlation for flavonoids' solubility, with an average absolute relative deviation of 3.01%.
JOURNAL OF FOOD PROCESSING AND PRESERVATION
(2021)
Article
Engineering, Multidisciplinary
Siti Machmudah, Meika Wahyu Fitriana, Nadhia Fatbamayani, Hideki Kanda, Sugeng Winardi, Motonobu Goto
Summary: In this study, phytochemical compounds were successfully extracted and encapsulated from medicinal plants using subcritical water and the electrospraying technique. The extracted phenolic compounds did not increase linearly with increasing extraction temperatures and pressures. Encapsulated particle products exhibited spherical morphologies with diameters less than 1 μm, confirming successful encapsulation of the medicinal plant extracts by PVP.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Engineering, Multidisciplinary
Wahyudiono, Hiroki Kondo, Siti Machmudah, Hideki Kanda, Yaping Zhao, Motonobu Goto
Summary: The study demonstrated the utilization of an electric field generated by high voltage discharge plasma over a liquid water surface containing glycine compound to synthesize TiO2 nanoparticles. The applied voltages, pulse numbers, and repetition rates significantly influenced the decomposition reaction of glycine compounds and electrode erosion. The UV-vis spectra and HRTEM images confirmed the formation of TiO2 nanoparticles and TiC as nanoparticle products, suggesting that this process has potential for advanced nanoparticle synthesis technology.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Cinthya S. Castro Issasi, Kanae Mori, Rodolfo M. Ibarra, Mitsuru Sasaki, Armando T. Quitain, Tetsuya Kida, Satoko Okubayashi, Tomohiro Furusato
Summary: The synthesis of thermoresponsive polymers has been developed through various methods, with recent attention drawn to plasma-initiated polymerization methods like arc and streamer discharge. Pulsed arc discharge shows promise in producing polymers with specific characteristics for applications such as wound dressing. By changing the discharge conditions, different molecular sizes and weights, viscosities, and crystallinities can be achieved using this method.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Engineering, Multidisciplinary
Wahyudion, Siti Machmudah, Hideki Kanda, Yaping Zhao, Goto Motonobu
Summary: The study demonstrated water pollutants removal and metal nanoparticles synthesis using high voltage discharge plasma at room temperature, showing that changing the reactor type can significantly enhance generation rates and produce nanoparticles with a diameter smaller than 10 nm. The innovative process presented has potential for advanced organic compound degradation and nanoparticles synthesis.
ENGINEERING JOURNAL-THAILAND
(2021)
Article
Multidisciplinary Sciences
Mitsuru Sasaki, Yuji Miyagawa, Kouki Nonaka, Ryota Miyanomae, Armando T. Quitain, Tetsuya Kida, Motonobu Goto, Tetsuo Honma, Tomohiro Furusato, Kunio Kawamura
Summary: Traditional oligopeptide synthesis techniques are environmentally harmful, while hydrothermal media can be used for environmentally friendly synthesis with the issue of diketopiperazine formation. This study shows that efficient oligopeptide synthesis in aqueous medium can be achieved using nano-pulsed plasma.
Article
Multidisciplinary Sciences
Siti Machmudah, Nabil Apta Maulana, Andhika Shafian Maindo Norman, Valencia Marchilia Nyoto, Irji Amrullah, Wahyudiono, Sugeng Winardi, I. Gede Wenten, Motonobu Goto
Summary: This study successfully removed oil from spent bleaching earth using the SCCO2 extraction technique. The temperature, pressure, and extraction time during the process affect the removal efficiency. The extracted oil can be used as feedstock for biodiesel fuel production.
Article
Chemistry, Applied
Mitsuru Sasaki, Hiras Tumegas Manalu, Ramma Kamogawa, Cinthya Soreli Castro Issasi, Armando T. Quitain, Tetsuya Kida
Summary: This study found that graphene oxide (GO) can be used as a catalyst to promote rutin hydrolysis under microwave irradiation, improving the reaction efficiency. Two different types of GOs were compared, and GO-TO showed higher catalytic performance. The highest rutin conversion (98.8%) and quercetin yield (81.9%) were achieved at 180 degrees C for 15 minutes using 3 mg of GO-TO and 2400 ppm of initial rutin concentration in 50 mL of water.
Article
Multidisciplinary Sciences
Eko K. Sitepu, Sabarmin Perangin-Angin, Gloria J. Ginting, Siti Machmudah, Rodiah N. Sari, Juliati Br Tarigan
Summary: Insect larvae, such as Black Soldier Fly (BSF) larvae, have potential as alternative biodiesel resources due to their sufficient oil content. In this study, direct transesterification of BSF larvae was conducted using a controllable crushing device (CCD) and a homogeneous base catalyst. The optimal conditions for biodiesel conversion were determined, with a maximum conversion of 93.8% achieved at room temperature, 20 minutes of reaction time, and a larvae to methanol ratio of 1:2 (wt./v), with a catalyst concentration of 7 wt% and a rotational speed of 3000 rpm. The CCD-intensified DT of BSF larvae shows promise as a green and energy-saving method for biodiesel production.
Article
Multidisciplinary Sciences
Wahyu Diono, Takumi Ibuki, Siti Machmudah, Hideki Kanda, Masami Bito, Yaping Zhao, Motonobu Goto
Summary: The study introduced non-equilibrium atmospheric-pressure plasma on an aqueous solution to depolymerize lignin, showing high efficiency in lignin degradation. Analysis using various spectroscopy and chromatography techniques provided insight into the characteristics of the extracted lignin.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Siti Machmudah, Widiyastuti Widiyastuti, Wahyudiono Wahyudiono, Sugeng Winardi, Hideki Kanda, Motonobu Goto
Summary: A low-temperature hydrothermal synthesis technique was used to produce ceria-zirconia mixed oxides particles, where the particles were spherical in shape with a diameter of around 100 nm. The study found that the morphology and size of the particles were influenced by the reaction temperature and the ratio of ceria to zirconia in the feed solution.
INDONESIAN JOURNAL OF CHEMISTRY
(2021)
Article
Engineering, Chemical
Yunfei Yu, Xue Yang, Chenchen Zhang, Jie Chen, Wei Lin, Jianqiang Meng
Summary: This study reports an environmentally friendly and simple approach for preparing double-network (DN) ion gel membranes with high strength and excellent gas separation performance. By optimizing crosslinking density, mass ratio, and the type and content of free ionic liquid, the mechanical and gas separation properties of the DN membrane are improved.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Si-qi Jiang, Qiang Gao, Xi-guang Li, Chao-zhu Deng, Jun Qiu, Xiang-nan Zhu
Summary: A dual-strengthening pretreatment method is proposed to remove PVDF more efficiently and enhance the leaching of LiCoO2. Experimental results show that dual-strengthening pretreatment can effectively remove PVDF and significantly improve the leaching efficiency compared to single pretreatment methods.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zengchi Hu, Xiaoyu Wang, Xiaohui Zhang, Xue Li, Jiangbin Xia
Summary: The rapid fabrication of high-performance composite membranes based on CMPs using simple and low-cost methods is challenging. In this study, three CMPs-based composite membranes were rapidly fabricated with adjustable size using unidirectional diffusion synthesis. The microstructural design enhanced the rejection rates of the membranes and they showed strong hydrolytic resistance, thermal stability, and acid-base resistance. Electrostatic adsorption and the adjustable microstructures significantly varied the repellence of the membranes to different charged molecules.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Farzaneh Rouhani, Matineh Ayedi, Nasser Safari
Summary: Introducing defects into porous metal-organic frameworks is important for improving their adsorption performance. Quasi-MOFs, an underutilized variant of large-scale, fundamentally deficient MOFs, have been found to have substantial amounts of unsaturated metal sites to offset the drawbacks of MOFs. In this study, a quasi-MOF was produced using a water-stable MOF and demonstrated significantly improved phosphate adsorption capability due to the presence of defect sites.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Valentin Reungoat, Morad Chadni, Louis M. M. Mouterde, Fanny Brunissen, Florent Allais, Helene Ducatel, Irina Ioannou
Summary: This study focuses on the recovery of sinapic acid using liquid-liquid extraction assisted by a hollow fiber membrane contactor from an aqueous feed obtained through the hydrolysis of mustard bran. The screening of solvents of different chemical nature showed that all tested solvents had an extraction efficiency of more than 80% for pH < 5. Four solvents were selected for use in the hollow fiber membrane contactor, and the volatile solvents showed higher mass transfer coefficients compared to non-volatile solvents. The extraction efficiency was intensified by increasing the initial concentration of sinapic acid and the feed-to-solvent ratio. CPME was found to have optimal recovery efficiency at a phase ratio of 8:1, yielding 0.9 g of sinapic acid per liter of CPME used.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Takahiro Sakamoto, Takafumi Hanada, Hayate Sato, Mayu Kamisono, Masahiro Goto
Summary: The emergence of the battery society has led to a high demand for battery metals, resulting in a strain on their supply. This study introduces a novel technique using a hydrophobic deep eutectic solvent (DES) for leaching and recovering battery metals from low-grade nickel laterite ores. The DES enables selective leaching and recovery of the metals, offering a promising pathway for the extraction of critical battery metals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Rongrong He, Jiarui Chen, Chunyao Zhang, Dan Lu, Lin Zhang, Tao He
Summary: Researcher has developed a method to quantify the charge density in nanofiltration (NF) membrane separation layer and applied it in NF membranes that can separate Mg2+ and Li+. The results showed that overcompensated amine groups played a major role, and there was a linear relationship between charge density and coating bi-layers or PAH layers.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zhijian Zhang, Min Chen, Zhe Lin, Zhichao Yang, Yafeng Du, Zhihui Chen, Zhenhao Yang, Kongyin Zhao, Ligang Lin
Summary: Membrane technology plays an important role in molecular/ion separation processes, but faces challenges such as membrane fouling. This study introduces a new ion-crosslinking method to fabricate copper alginate hydrogel membranes with improved mechanical strength and antimicrobial capabilities. The membranes exhibit excellent separation performance and enhanced long-term molecule/ion separation through improved anti-swelling properties. Molecular dynamics simulations and life cycle analysis highlight the pore structure and environmental friendliness of the hydrogel membranes. These findings provide valuable insights for developing sustainable hydrogel membranes with stable performance and high separation efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Dongmei Liu, Aiying Guo, Yanling Qi, Zhixin Ji, Hongjuan Li, Zhiwei Zhang, Xinyue Zhang, Kunze Wu, Aijun Cai
Summary: In this study, a stable magnetic Mg/Mn-layered double oxide-doped biochar composite (MgMnLDO-MBC) was prepared and successfully used for the removal of antibiotics and bacteria from wastewater. The composite exhibited enhanced surface areas, adsorption sites, and free radicals, leading to improved catalytic activity. The effects of different factors on the removal efficiency were evaluated, and the composite showed good reusability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Feng Wang, Zhaoyong Bian, Yaru Zhang, Wenchao Yu, Qiang Zhang, Hui Wang
Summary: In this study, a nanofibrous layered structure of Ff-Ti3C2Tx-Co3O4 was prepared by self-assembling nanofibrous Co3O4 with lamellar fluorine-free MXene (Ff-Ti3C2Tx). The Ff-Ti3C2Tx-Co3O4 exhibited excellent catalytic activity for degradation, resistant to ionic interference, and maintained high removal efficiency of sulfamethoxazole (SMX) in municipal wastewater. The rapid SMX degradation involved fast electron transfer in redox cycles with PMS and the generation of 1O2 via PMS ->center dot O2 -> 1O2. This work provides new insights into antibiotic degradation mechanisms and electron transfer based on PMS activation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Weipeng He, Jiacheng Luo, Yujie Wu, Tianhao Luo, Chen Tang
Summary: This study comparatively evaluated the role of cationic, anionic, and nonionic polyacrylamides (PAMs) in ballasted flocculation of clay suspensions under different aluminum sulfate (AS) coagulant dosages. The selection of PAMs and AS dosage had a significant influence on the size and shear resistance of ballasted floc aggregates.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Lixian Wang, Lizhi Zhao, Didi Si, Zhixin Li, Huiqin An, Hui Ye, Qingping Xin, Hong Li, Yuzhong Zhang
Summary: Metalloporphyrin-based nanozymes integrated with poly (vinylidene fluoride) membrane show high catalytic activity and reusability for the decolorization of Congo Red dye in continuous flow process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Yongfei Ma, Chenyu Zeng, Yongzhen Ding, Jiayi Tang, Ondrej Masek, Zhikang Deng, Rui Mu, Zulin Zhang
Summary: In this study, sludge-derived biochar (SBC) was functionalized with various iron salts to enhance its adsorption ability for sulfamethoxazole (SMX) and magnetic collection performance. Ball milling was further employed to treat the optimal iron salt functionalized SBC (MSBC), resulting in ball milled SBC (BMSBC) with improved adsorption performance for SMX. The dominant driving mechanism for SMX adsorption onto BMSBC was confirmed to be multiple physicochemical forces, including 7C-7C conjugation, pore filling, H-bonding, Fe-O complexation, and electrostatic interactions. BMSBC exhibited favorable adsorption ability for SMX in actual waters and could be easily collected within 1 min due to its magnetic sensitivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Jinglin Tan, Xiaohui Mao, Wenjihao Hu, Hongbo Zeng
Summary: This study investigates the influence of PDMS chain architectures on surface properties and reveals that PDMS coatings with looped structures exhibit superior hydrophobicity, self-cleaning, and water sliding compared to coatings with linear structures. Additionally, both looped and linear PDMS coated stainless steel mesh/polyester fibers show efficient separation of oil/water mixture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Wei-Liang Chen, Chih-Chia Cheng, Chien-Hsing Lu, Jem-Kun Chen
Summary: This study designs a novel sandwich-structured capacitor that reduces the absorption time of pollutants using dielectrophoresis force. By coating graphene oxide on polystyrene microspheres as adsorbents and encapsulating them within the capacitor, the adsorption rate is significantly enhanced. Additionally, frequency manipulation allows for the recycling of adsorbents and concentration of dyes, minimizing secondary pollution.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
