Journal articles: 'Extraction intensification'

1

Tang, Zhigang, Zhimin He, Hongwei Li, Dong Guo, and Zhijun Zhao. "Process Intensification in Tiopronin Extraction." International Journal of Chemical Engineering and Applications 7, no. 6 (December 2016): 433–36. http://dx.doi.org/10.18178/ijcea.2016.7.6.620.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Babenko, Yu I., and E. V. Ivanov. "Optimizing the intensification of extraction." Theoretical Foundations of Chemical Engineering 46, no. 2 (April 2012): 149–52. http://dx.doi.org/10.1134/s0040579512010010.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Bart, H. J., C. Drumm, and M. M. Attarakih. "Process intensification with reactive extraction columns." Chemical Engineering and Processing: Process Intensification 47, no. 5 (May 2008): 745–54. http://dx.doi.org/10.1016/j.cep.2007.11.005.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Belghith, Yosra, Imen Kallel, Maxence Rosa, Panagiotis Stathopoulos, Leandros A. Skaltsounis, Noureddine Allouche, Farid Chemat, and Valérie Tomao. "Intensification of Biophenols Extraction Yield from Olive Pomace Using Innovative Green Technologies." Biomolecules 13, no. 1 (December 29, 2022): 65. http://dx.doi.org/10.3390/biom13010065.

Full text

Abstract:

Olive pomace is the main by-product generated by the olive oil production process. Although toxic to the environment, olive pomace is an important source of natural antioxidants due to its high content of phenolic compounds. The aim of the current study is to maximize the extraction yields of the main phenolic compounds present in olive pomace using innovative green technologies. For this purpose, the present work is divided into two parts. The first part is based on a solubility study of targeted phenolic compounds in various ethanol/water ratios at two different temperatures (20 °C and 50 °C). A computational prediction using COSMO-RS software was applied for the calculation of eventual solubility, which was subsequently confirmed by practical experiments. The determination of the optimal extraction conditions of solvent ratio (EtOH/H2O) (60:40 v/v) and temperature (50 °C) led to the second part of the work, which concerns the intensification of extraction yields. Furthermore, various green extractions using innovative technologies, including accelerated solvent extraction (ASE), ultrasound with its both system (probe (UAE-P) and bath (UAE-B)), bead milling (BM) and microwave (MAE), were carried out and then compared to conventional maceration (CM). Results showed that ASE was the most effective method for extracting phenolic compounds from dried olive pomace powder (5.3 milligrams of tyrosol equivalent (TE) per gram of dried olive pomace powder (DOP)) compared to CM (3.8 mg TE/g DOP).

APA, Harvard, Vancouver, ISO, and other styles

5

Moskalenko, Tatiana, Valery Mikheev, and Elena Vorsina. "Intensification of humic acid extraction from lignites." E3S Web of Conferences 192 (2020): 02024. http://dx.doi.org/10.1051/e3sconf/202019202024.

Full text

Abstract:

One of the methods of initial properties of solid fuels changing by their organic mass oxidation is considered in the paper. Creation of innovative ways of intensification of existing solid fuels processing and their adoption by industry has always been and remains an actual task. Thus the chemical process is the most important stage of raw materials processing into target products. Chemical exposure allows to optimize the technological mode, expanding the scope of control of technological process parameters and, to a certain extent, modify the properties of the resulting products. The article presents the results of experimental research of influence of preliminary oxidation on the lignite organic mass from Kharanorsk and Kangalas deposits by different chemical reagents to determine a degree of this process impact on the efficiency of their processing into humic substances. Inorganic and organic oxidizers of different concentrations were used as reagents. The greatest effect for increasing the humic acids yield was observed when using 6-10 % hydrogen peroxide for oxidation, and 10 % hydrochloric acid. The results of experiments on the coal preoxidation effect can be used as a basis for the development of a new method of lignites processing into humic substances.

APA, Harvard, Vancouver, ISO, and other styles

6

Tamminen, Jussi, Tuomo Sainio, and Erkki Paatero. "Intensification of metal extraction with high-shear mixing." Chemical Engineering and Processing: Process Intensification 73 (November 2013): 119–28. http://dx.doi.org/10.1016/j.cep.2013.08.005.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Danylenko, V. A. "Technological Complex for Intensification of Energy Bearers Extraction." Nauka ta innovacii 2, no. 5 (September 30, 2006): 34–40. http://dx.doi.org/10.15407/scin2.05.034.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Kashyap, Piyush, Charanjit Singh Riar, and Navdeep Jindal. "Intensification of Polyphenols Extraction from Sohiong (Prunus nepalensis) using Microwave-Assisted Extraction." Asian Journal of Chemistry 34, no. 1 (2021): 140–46. http://dx.doi.org/10.14233/ajchem.2022.23469.

Full text

Abstract:

Microwave-assisted extraction (MAE) was investigated to extract polyphenols from sohiong (Prunus nepalensis) fruit. The effect of process variables (solvent concentration, solvent-solid ratio, microwave power and time) on yield and total phenol content (TPC) of fruit extract were studied using response surface methodology. The best conditions for extraction of polyphenolic extract were solvent concentration (55.17%), solvent-solid ratio (26.09%), microwave power (500 W) and time (238 s). Under optimized MAE conditions, the yield, TPC, DPPH and FRAP of sohiong extracts were 47.25%, 146.61 mgGAE/g, 89.02% and 0.58 mgAAE/g, respectively. Furthermore, MAE showed higher yield, TPC and antioxidant activity as compared to conventional solvent extraction (CSE) (28.13%, 96.56 mgGAE/g, 74.87% (DPPH) and 0.54 mgAAE/g (FRAP)), respectively. Thus, MAE is a potential alternative for polyphenols extraction from sohiong fruit and as a rich source of antioxidant compounds, it can be a potent ingredient for pharmaceuticals and food industries.

APA, Harvard, Vancouver, ISO, and other styles

9

Alexandre, Agostinho M. R. C., Ana A. Matias, Maria Rosário Bronze, Maria Jose Cocero, and Rafael Mato. "Phenolic Compounds Extraction of Arbutus unedo L.: Process Intensification by Microwave Pretreatment." Processes 8, no. 3 (March 5, 2020): 298. http://dx.doi.org/10.3390/pr8030298.

Full text

Abstract:

Arbutus unedo L., commonly known as the strawberry-tree fruit, is an endemic species of the Mediterranean flora. Microwave extraction technology has been considered as a fast and “green” method for the production of extracts rich in bioactive compounds, although the energy consumption is high. To overcome this bottleneck, microwave was used as a pretreatment procedure in short time periods. This technique promotes the burst of intracellular vacuoles leading to an increase in the lixiviation of phenolic compounds. Different approaches were tested, namely a solvent-free irradiation (SFI), a solvent-assisted irradiation (SAI) and a pressurized solvent-assisted irradiation (PSAI). After irradiation, a solid–liquid extraction procedure was performed using a mixture of water and ethanol. A kinetic evaluation of the total phenolic content (TPC) was performed using the Folin–Ciocalteu method. For the total anthocyanin content, a UV-spectrophotometric method was used. HPLC-UV and LC-MS were used for TPC and identification of present compounds. Microwave irradiation led to an increase in TPC of extracts after SAI (52%) and PSAI (66%) along with a reduction in time of extraction from 30 min to less than 2 min. The anthocyanin content also increased by 66% for the SAI and PSAI extractions.

APA, Harvard, Vancouver, ISO, and other styles

10

Smelcerovic, Andrija, Sinisa Djordjevic, Zika Lepojevic, and Dragan Velickovic. "The analysis of the kinetics of extraction of resinoids and hypericines from the amber, Hypericum perforatum L." Journal of the Serbian Chemical Society 67, no. 6 (2002): 457–63. http://dx.doi.org/10.2298/jsc0206457s.

Full text

Abstract:

The kinetics of the extraction of the overall extracted materials (resinoids), total hypericine, hypericine and pseudohypericine from amber (Hypericum perforatum L) was investigated by the procedure of maceration both with and without ultra-sound, using methanol as the extractant. It was found that the period of fast extraction with intensification of the extraction of resinoid by ultra-sound was significantly shorter (about 20 minutes) than was needed for the extraction without ultra-sound (about 5 h). Similar results were also obtained for the extraction of the other tested substances. It can be concluded that better drug exploitation can be achieved in a much shorter extraction time by intensification of the extraction using ultra-sound. By preparation of herbal material through pulverization, a significant grade of herbal tissue structure disintegration was achieved, so that turbulent mass transfer plays a dominant role in the extraction. The results show that the coefficient values of fast extraction (b) are approximately the same for all the investigated kinetics.

APA, Harvard, Vancouver, ISO, and other styles

11

Bandura, Valentyna. "INNOVATIVE ENERGY EFFICIENT TECHNOLOGIES OF THE SOYE EXTRACTION PROCESS." ENGINEERING, ENERGY, TRANSPORT AIC, no. 1(108) (August 27, 2020): 82–90. http://dx.doi.org/10.37128/2520-6168-2020-1-10.

Full text

Abstract:

The key process for extracting oils from raw materials is extraction. In this case, extraction is a complex and time-consuming process. The extraction process is characterized by low intensity. One of the most promising and innovative methods of extracting plant material is the use of microwave technologies. As there are no generally accepted recommendations for microwave extraction regimens and extract properties, this makes it impossible to create the appropriate technology and to develop a microwave extractor to obtain the target substances. The article reviews the existing equipment for extraction of various raw materials. It is shown that pulsed electromagnetic field is an effective tool for the implementation of microwave technology. The degree of intensification of mass transfer processes with the application of directional energy diffusion technologies can be much higher than the possibilities of traditional technologies. Scientists study that traditional processes take 3 hours or more, and the process of barodiffusion plus gravity takes less than 30 minutes. The results of the study of the innovative process of soybean extraction using microwave technologies are presented in the article. With increasing temperature, the extraction rate increased, which was associated with an increase in the rates of chemical reactions and diffusion coefficients, a positive effect on the kinetic, internally and externally diffusive nucleus, the driving force of the process increased, and the resistance to its course decreased. The intensification of the extraction process by the microwave field occurs by increasing the pressure inside the capillaries of the vegetable raw materials, with their subsequent destruction and maximum flow of the target component into the extractant. There is a flow of diffusion, which contributes to a significant reduction in time and increase the extraction of valuable components from raw materials. The use of microwave technologies is real and promising as the extraction process facilitates the release of the target component with a significant increase in the concentration (an average of 2 times) and a significant reduction in the oil extraction time.

APA, Harvard, Vancouver, ISO, and other styles

12

Guan, Xiao, Lv Li, Jing Liu, and Sen Li. "Effects of Ultrasonic-Microwave-Assisted Technology on Hordein Extraction from Barley and Optimization of Process Parameters Using Response Surface Methodology." Journal of Food Quality 2018 (July 8, 2018): 1–8. http://dx.doi.org/10.1155/2018/9280241.

Full text

Abstract:

We investigated the process intensification of ultrasonic-microwave-assisted technology for hordein extraction from barley. Response surface methodology was utilized to optimize the extraction conditions and to analyze the interaction between four selected variables: temperature, microwave power, ultrasonic power, and extraction time. The validated extraction yield of hordein reached 8.84% at 78°C, microwave power 298 W, and ultrasonic power 690 W after 20 min as optimum conditions. Compared with traditional water-bath extraction (4.7%), the ultrasonic-microwave-assisted technology effectively increased the hordein extraction yield and shortened the extraction time. According to the obtained quadratic model (R2 = 0.9457), ultrasonic power and extraction time were the first two significant factors. However, temperature limited the effects of other factors during extraction. SDS-PAGE and scanning electron microscopy were used to identify the hordein extract and to clarify the difference between the two hordein fractions extracted with new and traditional methods, respectively. Ultrasonic-microwave-assisted technology provided a new way to improve hordein extraction yield from barley and could be a good candidate for industrial application of process intensification.

APA, Harvard, Vancouver, ISO, and other styles

13

Andryushayev, Oleksiy, Olena Ruban, Yuliia Maslii, and Inna Rusak. "Intensification of the extraction process of phenolic compounds from Acorus calamus leaves." ScienceRise: Pharmaceutical Science, no. 4(32) (August 31, 2021): 4–10. http://dx.doi.org/10.15587/2519-4852.2021.238329.

Full text

Abstract:

The aim. To determine the intensified method of extraction of phenolic compounds from Acorus calamus leaves and optimal conditions for the process. Materials and methods. In order to develop the optimal intensified method of extraction samples were prepared in different conditions of raw materials-extractant ratio, temperature, time and multiplicity. As a raw materials spectrophotometrically pre-standardized Acorus calamus leaves were used. The extraction was carried out in a hermetically sealed ultrasonic extraction reactor PEX 1 (REUS, Contes, France). As the criteria of extraction efficiency were indicators of dry residue and total amount of flavonoids determined using methods described in State Pharmacopoeia of Ukraine. The amount of flavonoids was determined spectrophotometrically on a certified device Specord 200 (Analytik Jena, Germany). Results. According to our research results it was found that ultrasonic action and addition of surfactant significantly improves the efficiency of the extraction process. The optimal conditions for the process were determined. Experimentally proved that the rational raw material-extractant ratio is 1:15. Comparative study of the extraction process with different temperatures showed that the highest amount of extractives is achieved at temperature 70 °C and 45 min of duration. The optimal extraction multiplicity is 3. Conclusions. As a result of the study, the intensified extraction method for Acorus calamus leaves – re-maceration with ultrasound – was established. The conducted researches allowed to develop the method of extraction, expedient in the conditions of the modern pharmaceutical industry.

APA, Harvard, Vancouver, ISO, and other styles

14

Panda, Debabrata, and Sivakumar Manickam. "Cavitation Technology—The Future of Greener Extraction Method: A Review on the Extraction of Natural Products and Process Intensification Mechanism and Perspectives." Applied Sciences 9, no. 4 (February 22, 2019): 766. http://dx.doi.org/10.3390/app9040766.

Full text

Abstract:

With growing consumer demand for natural products, greener extraction techniques are found to be potential alternatives especially for pharmaceutical, nutraceutical, and cosmetic manufacturing industries. Cavitation-based technology has drawn immense attention as a greener extraction method, following its rapid and effective extraction of numerous natural products compared to conventional techniques. The advantages of cavitation-based extraction (CE) are to eliminate the application of toxic solvents, reduction of extraction time and to achieve better extraction yield, as well as purity. The cavitational phenomena enhance the extraction efficiency via increased mass transfer rate between the substrate and solvent, following the cell wall rupture, due to the intense implosion of bubbles. This review includes a detailed overview of the ultrasound-assisted extraction (UAE), negative pressure cavitation (NPC) extraction, hydrodynamic cavitation extraction (HCE) and combined extractions techniques which have been implemented for the extraction of high-value-added compounds. A list of essential parameters necessary for the maximum possible extraction yield has been discussed. The optimization of parameters, such as ultrasonic power density, frequency, inlet pressure of HC, extraction temperature and the reactor configuration denote their significance for better efficiency. Furthermore, the advantages and drawbacks associated with extraction and future research directions have also been pointed out.

APA, Harvard, Vancouver, ISO, and other styles

15

Bakin, I. A., A. S. Mustafina, L. A. Aleksenko, and M. N. Shkolnikova. "Intensification of extraction of phytocomponents from berry raw materials." IOP Conference Series: Earth and Environmental Science 640, no. 2 (February 1, 2021): 022066. http://dx.doi.org/10.1088/1755-1315/640/2/022066.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Gavarić, Aleksandra, Senka Vidović, Krunoslav Aladić, Stela Jokić, and Jelena Vladić. "Supercritical CO2 extraction of Marrubium vulgare: intensification of marrubiin." RSC Advances 11, no. 16 (2021): 9067–75. http://dx.doi.org/10.1039/d0ra10253a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Gradov, Oleg M., Yulia A. Zakhodyaeva, Inna V. Zinov’eva, and Andrey A. Voshkin. "Ultrasonic Intensification of Mass Transfer in Organic Acid Extraction." Processes 9, no. 1 (December 23, 2020): 15. http://dx.doi.org/10.3390/pr9010015.

Full text

Abstract:

The mechanism of ultrasonic extraction was discovered and analyzed in detail for the liquid membrane technique from the consideration of the specific features of the radial vibrations of a droplet of the dispersed phase placed into an immiscible continuous phase subjected to ultrasonic irradiation. Analytical formulas were derived for the rate of mass transfer as a function of the amplitude of acoustic pressure oscillations and the time of ultrasonic treatment of an extraction system. Conditions for achieving the maximum efficiency of the extraction of a substance under the stimulating effect of ultrasound were analyzed. A nonlinear equation was derived for the radial vibrations of a spherical droplet of the dispersed phase in an immiscible continuous phase under forcing in the form of acoustic pressure periodically changing with time. Experimental study of the dependence of sulfosalicylic acid distribution on time in an aqueous two-phase system with ultrasound shows good agreement of experimental results with the calculations performed.

APA, Harvard, Vancouver, ISO, and other styles

18

Rezzoug, S. A., and N. Louka. "Thermomechanical process intensification for oil extraction from orange peels." Innovative Food Science & Emerging Technologies 10, no. 4 (October 2009): 530–36. http://dx.doi.org/10.1016/j.ifset.2009.05.008.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Gogate, Parag R., and Sathish G. Nadar. "Ultrasound-assisted Intensification of Extraction of Astaxanthin fromPhaffia rhodozyma." Indian Chemical Engineer 57, no. 3-4 (March 26, 2015): 240–55. http://dx.doi.org/10.1080/00194506.2015.1026947.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Herbina, Nataliia, Olena Ruban, Oleksiy Andryushayev, and Larisa Hohlova. "Intensification of the Extraction Process of Flavonoids and Hydroxycinnamic Acids from Tanacetum vulgare L. Flowers." Journal of Reports in Pharmaceutical Sciences 11, no. 1 (January 2022): 125–31. http://dx.doi.org/10.4103/jrptps.jrptps_133_21.

Full text

Abstract:

Background and Purpose: It has been shown that taking into account the polyvalence of action, tansy (Tanacetum vulgare L.) is a promising raw material for obtaining substances based on it as active pharmaceutical ingredients for the development of new potential herbal medicinal products. Materials and Methods: Ultrasound-assisted extraction (UAE) has been considered as one of the promising methods to optimize the technology of extracting biologically active substances (BAS) from T. vulgare flowers. Results: The advantages of the method, the mechanism of ultrasound action on plant cells, and the main factors affecting this process are indicated. Conclusion: The optimal technological parameters that allow the extraction of flavonoids calculated with reference to luteolin and hydroxycinnamic acids calculated with reference to chlorogenic acid in the maximum amount, namely, the raw material and extractant ratio, time, and the extraction frequency, have been determined. The high efficiency of UAE has been proven.

APA, Harvard, Vancouver, ISO, and other styles

21

Kosheleva, M. K., O. R. Dornyak, and E. N. Shirokopoyas. "IMPROVING THE EFFICIENCY OF THE EXTRACTION PROCESS IN PRODUCTION OF HYGROSCOPIC FIBROUS MATERIALS." Vestnik Tambovskogo gosudarstvennogo tehnicheskogo universiteta 28, no. 1 (2022): 094–102. http://dx.doi.org/10.17277/vestnik.2022.01.pp.094-102.

Full text

Abstract:

The aim of the paper is to make a reasonable choice of a resource-saving method to increase the efficiency of producing medical hygroscopic cotton wool, which is a strategically important dressing material. The paper explores the possibility of practical use of the chosen method of intensification and the proposed formulation of the technological solution to increase the efficiency of the extraction process (decoction), which largely determines the quality of the target product. The process is carried out in periodic devices with sodium hydroxide and other chemical reagents, and is characterized by high duration and energy intensity. The study is based on the experimental study of the process of extracting process contaminants (decoction) of cotton in the production of medical hygroscopic cotton, including a reasonably chosen ultrasonic effect for intensification.

APA, Harvard, Vancouver, ISO, and other styles

22

Zhao, Jinghan, Stephen Vanderburgt, Rafael M. Santos, and Yi Wai Chiang. "Process Intensification of Dichlorodiphenyltrichloroethane Detection Methods for Determining Trace Concentrations in Soils." Sustainable Chemistry 1, no. 1 (June 26, 2020): 63–74. http://dx.doi.org/10.3390/suschem1010006.

Full text

Abstract:

Dichlorodiphenyltrichloroethane (DDT) residue in Ontario soil is expected to be found at trace levels, since it has been banned for over 45 years in Canada. This presents challenges to the efficiency and accuracy of conventional detection methods. This study intensified the conventional DDT detection method, in the characterization of aged soil samples collected from historically-treated sites in Ontario. Recovery, time consumption, and labor intensity were considered for the intensification evaluation. Ultrasonic probe extraction was found to significantly shorten the extraction time, with similar yield compared to ultrasonic water bath extraction and homogenized extraction. Homogenized extraction for 24 h following ultrasonic probe extraction can increase yield over 27%. Rotary evaporator concentration was used, since it can reduce the operating time with comparable recovery. The Florisil clean-up column used in the conventional method was removed from the intensified method, due to its negligible effect and high time consumption. The intensified method may be valuable for further investigation to determine other trace level organochlorine pesticide residues in soil samples.

APA, Harvard, Vancouver, ISO, and other styles

23

Ascrizzi, R., J. González-Rivera, C. S. Pomelli, C. Chiappe, P. Margari, F. Costagli, I. Longo, M. R. Tiné, G. Flamini, and C. Duce. "Ionic liquids, ultra-sounds and microwaves: an effective combination for a sustainable extraction with higher yields. The cumin essential oil case." Reaction Chemistry & Engineering 2, no. 4 (2017): 577–89. http://dx.doi.org/10.1039/c7re00075h.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Fialkovska, Larisa. "EXAMINATION OF THE EXTRACTION PROCESS IN THE INSTALLATION FOR EXTREME IN THE ELECTROMAGNETIC INTENSIFICATION." ENGINEERING, ENERGY, TRANSPORT AIC, no. 2(105) (May 31, 2019): 75–79. http://dx.doi.org/10.37128/2520-6168-2019-2-10.

Full text

Abstract:

Іn the article an overview of the methods of extraction of oilseeds is carried out. The purpose of the work was to carry out the study of the extraction process at the installation for extraction in an electromagnetic intensifier (EEMI). The only way to ensure virtually complete oil extraction is the extraction method, in which the forces that convert the oil into a solution exceed the forces that hold oil in the extracted material. Today, the extraction method for oil extraction at Ukrainian plants is leading, as it provides greater yield of oil than with the use of the press process. The object of research is the use of rapeseed and soybean seeds, locally, oil obtained as a result of extraction of oilseeds. Experimental researches were carried out in laboratory conditions at the department "Processes and equipment of processing and food industries of a name of professor P. S. Bernik" of Vinnytsia National Agrarian University. Production tests of the laboratory sample of the extractor were carried out at PJSC "Vinnitsa OZHK". Physical and chemical researches of raw materials and intermediate materials were carried out. The optimum temperature regimes of the extraction process are established. The expediency and necessity of use as a solvent of ethyl alcohol is described. The research of rapeseed and soybean oils obtained as a result of extraction was conducted. The production of oil on the plant for extraction in an electromagnetic intensifier (EEMI) will enable the product to meet the requirements of regulatory documents and has a higher content of biologically active substances - tocopherols in comparison with traditional methods.

APA, Harvard, Vancouver, ISO, and other styles

25

Assmann, Nora, and Philipp Rudolf von Rohr. "Extraction in microreactors: Intensification by adding an inert gas phase." Chemical Engineering and Processing: Process Intensification 50, no. 8 (August 2011): 822–27. http://dx.doi.org/10.1016/j.cep.2011.05.009.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Karmakar, Sudhanya, Avijit Bhowal, and Papita Das. "Process Intensification of Liquid-Liquid Extraction in Rotating Packed Bed." Materials Science Forum 998 (June 2020): 146–50. http://dx.doi.org/10.4028/www.scientific.net/msf.998.146.

Full text

Abstract:

The object of this study is to intensify the liquid-liquid extraction. Experiments were carried out inside a Rotating Packed Bed (RPB) operating at centrifugal force varying between 100g and 1000g. The system chosen for experimentation was removal of hexavalent chromium from aqueous solution using aliquat-336 as an extractant. The effect of centrifugal force on overall volumetric mass transfer coefficient () was investigated. Mass transfer characteristics of RPB were observed with the variation in rotational speed (300-1100rpm), aqueous phase (0.4-1.2 L/min) and organic phase (0.05-0.15 L/min) flow rate, feed (25-200 mg/L) and extractant (0.5-1.25 vol%) concentration. Significantly higher value of (~20-25 times) was achieved in RPB than that achieved in comparison with conventional packed bed extractor wherein flow is dictated by terrestrial gravity. In other words, same separation efficiency can be obtained within a much smaller rotating extractor.

APA, Harvard, Vancouver, ISO, and other styles

27

Chakraborty, Mousumi, Z. V. P. Murthy, Chiranjib Bhattacharya, and Siddhartha Datta. "Process Intensification: Extraction of Chromium(VI) by Emulsion Liquid Membrane." Separation Science and Technology 40, no. 11 (August 2005): 2353–64. http://dx.doi.org/10.1080/01496390500202555.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Khudeev, Illarion I., Elena S. Lebedeva, Artem I. Artemiev, Ilya V. Kazeev, and Natalya V. Menshutina. "INTENSIFICATION OF SUPERCRITICAL EXTRACTION OF TRITERPENE SAPONINS FROM ARALIA MANDSHURICA AND PANAX GINSENG." ChemChemTech 66, no. 3 (February 8, 2023): 108–18. http://dx.doi.org/10.6060/ivkkt.20236603.6737.

Full text

Abstract:

This work is devoted to experimental research of the extraction of triterpene saponins from Aralia mandshurica and Panax ginseng using the supercritical extraction process. Triterpene saponins of Aralia mandshurica and Panax ginseng are polar compounds. Therefore, the supercritical extraction process was carried out in a supercritical carbon dioxide using a co-solvent – an aqueous solution of ethanol. A technique for carrying out the supercritical extraction process is described and a schematic diagram of a supercritical extraction apparatus proprietary design with an extractor volume of 22 ml is presented. The kinetic curves of the yield of extract are presented. This work is considering methods of intensification of the supercritical extraction process: optimization of operational conditions, superposition of fields. Optimization of operational conditions was carried out in the temperature range of 40 to 50 °С and pressures range of 120 to 200 bar. The phenomenon of retrogradation was noted when the temperature of the supercritical extraction process from Panax ginseng changed. The influence of the method of supplying supercritical carbon dioxide (constant supply throughout the process and pulse supply) was studied. The pulsed supply made it possible to significantly reduce the consumption of carbon dioxide – by 59.5% relative to the experiment with a constant consumption of carbon dioxide. The study of the effect of ultrasonic exposure (the method of superimposing fields) on the intensity of the supercritical extraction process was carried out. The usage of ultrasound led to an increase in the yield of extract. The largest amount of extract from Aralia mandshurica and Panax ginseng was obtained at 50 °С and 200 bar with the usage of ultrasonic exposure and at a constant supply of carbon dioxide (500 g/h) throughout the process. For citation: Khudeev I.I., Lebedeva E.S., Artemiev A.I., Kazeev I.V., Menshutina N.V. Intensification of supercritical extraction of triterpene saponins from Aralia mandshurica and Panax ginseng. ChemChemTech [Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol.]. 2023. V. 66. N 3. P. 108-118. DOI: 10.6060/ivkkt.20236603.6737.

APA, Harvard, Vancouver, ISO, and other styles

29

Božinović, Marko, Renata Vičević, Nikolina Zekić, Anita Šalić, Ana Jurinjak Tušek, and Bruno Zelić. "Intensification of endo-1,4-Xylanase Extraction by Coupling Microextractors and Aqueous Two-Phase System." Processes 11, no. 2 (February 2, 2023): 447. http://dx.doi.org/10.3390/pr11020447.

Full text

Abstract:

The extraction of xylanase was performed using an aqueous two-phase system (ATPS) based on polyethylene glycol (PEG1540) and various salts. Preliminary studies in a batch extractor showed that the highest extraction efficiency, E = 79.63 ± 5.21%, and purification factor, PF = 1.26 ± 0.25, were obtained with sodium citrate dihydrate-H2O-PEG1540-based ATPS for an extraction time of 10 min. The process was optimized using the experimental Box-Behnken design at three levels with three factors: extraction time (t), xylanase concentration (γ), and mass fraction of PEG in the ATPS (wPEG). Under optimal process conditions (γ = 0.3 mg/mL, wPEG = 0.21 w/w, and t = 15 min), E = 99.13 ± 1.20% and PF = 6.49 ± 0.05 were achieved. In order to intensify the process, the extraction was performed continuously in microextractors at optimal process conditions. The influence of residence time, different feeding strategies, and channel diameter on extraction efficiency and purification factor was further examined. Similar results were obtained in the microextractor for a residence time of τ = 1.03 min (E = 99.59 ± 1.22% and PF = 6.61 ± 0.07) as in the experiment carried out under optimal conditions in the batch extractor. In addition, a batch extractor and a continuous microextractor were used for the extraction of raw xylanase produced by Thermomyces lanuginosus on solid supports.

APA, Harvard, Vancouver, ISO, and other styles

30

de la Vega-Leinert, Anne Cristina, and Peter Clausing. "Extractive Conservation." Environment and Society 7, no. 1 (September 1, 2016): 50–70. http://dx.doi.org/10.3167/ares.2016.070104.

Full text

Abstract:

ABSTRACTIn view of the Aichi international policy targets to expand areas under conservation, we analyze to what extent conservation has become an inherent element of extraction. We scrutinize the Land Sparing versus Land Sharing debate by explicitly incorporating environmental justice issues of access to land and natural resources. We contend that dominant conservation regimes, embedded within Land Sparing, legitimize the displacement of local people and their land use to compensate for distant, unsustainable resource use. In contrast, the Land Sharing counternarrative, by promoting spatial integration of conservation in agroecological systems, has the potential to radically challenge extraction. Common ground emerges around the concept of sustainable intensification. We contend that if inserted in green economy’s technocentric and efficiency-oriented framework, sustainable intensification will contribute to undermining diversified peasant agroecological systems by transforming them into simplified, export-orientated ones, thereby stripping peasant communities of the capacity to provide for their own needs.

APA, Harvard, Vancouver, ISO, and other styles

31

Dong, Zhijun, and Weitian Xia. "Extraction of Bioactive Macromolecules Using Supercritical Carbon Dioxide Technology." Transactions on Environment, Energy and Earth Sciences 4 (December 12, 2024): 207–13. https://doi.org/10.62051/46g23k15.

Full text

Abstract:

The complex structure of biological macromolecules makes it play an important role in various fields, and its demand is increasing day by day, so its extraction technology has also become a hot research object. For example, essential oils can be able to extract from different parts of plants. Because they are rich in a variety of special chemical groups, they endow them with unique physical and chemical properties, making them widely used in various fields. Conventional extraction methods, such as steam distillation, cold pressing and solvent extraction, all have certain limitations and disadvantages for extracting essential oils. And with the intensification of the greenhouse effect, how to use carbon dioxide (CO2) has become a hot and urgent topic. The supercritical CO2 extraction technology is to turn CO2 into treasure and use it rationally. The use of supercritical CO2 extraction has higher efficiency, lower energy consumption and other outstanding advantages. This research focuses on the analysis of the extraction rate of biologically active macromolecules by supercritical CO2 extraction technology, including essential oils and Angelica. The effects of different experimental parameters on the extraction results were explored, the reasons were analyzed, and appropriate extraction conditions were obtained to optimize the extraction rate.

APA, Harvard, Vancouver, ISO, and other styles

32

Pessoa, Fernando Luiz Pellegrini, and Luis Alcides Brandini De Boni. "FROM ACADEMIA TO INDUSTRY: A JOURNEY OF INNOVATION IN CHEMICAL ENGINEERING - INTERVIEW WITH PROFESSOR FERNANDO LUIZ PELLEGRINI PESSOA." PERIÓDICO TCHÊ QUÍMICA 21, no. 48 (November 30, 2024): 109–15. https://doi.org/10.52571/ptq.v21.n48.2024_08_pellegrini_pgs_109_115.pdf.

Full text

Abstract:

Background: The interview with Professor Dr. Fernando Luiz Pellegrini Pessoa covers his extensive career and contributions to chemical engineering, focusing on innovations and sustainability. Objectives: To explore Professor Pellegrini's experiences in various areas of chemical engineering, including teaching methods, research in supercritical extraction, biodiesel production, and process intensification. Methods: Semi-structured interview addressing topics such as academic and industrial career, teaching methods, ongoing research, and future perspectives for the chemical industry. Results: Professor Pellegrini highlighted the importance of practical application of theoretical knowledge, the development of the Water Source Diagram method, advances in supercritical extraction and biodiesel production, and the need for process intensification in the industry. Discussion: The interview revealed the importance of integration between academia and industry, the need for teaching methods that facilitate learning, and the challenges in implementing sustainable and efficient technologies in the chemical industry. Conclusion: Professor Pellegrini emphasizes the importance of process intensification and sustainability in the evolution of the chemical industry. He highlights the need for greater collaboration between academia and industry to address future challenges and implement innovative solutions.

APA, Harvard, Vancouver, ISO, and other styles

33

Safina, Albina, Lenar Ismailov, and Ruslan Safin. "Intensification of water extraction of non-fruit parts of sea buckthorn (Hippóphaë rhamnóides)." E3S Web of Conferences 371 (2023): 01092. http://dx.doi.org/10.1051/e3sconf/202337101092.

Full text

Abstract:

The healing properties of extracts from sea buckthorn fruits have been confirmed by numerous studies, however, the infertile parts remaining after harvesting or after pruning young trees also contain valuable components. Leaves, bark, shoots and woody parts of sea buckthorn are very promising raw materials for the extraction of biologically active substances. The introduction of non-waste technologies, issues of resource conservation, the search for rational ways to isolate valuable components from the non-fruit part of sea buckthorn determined the relevance of this study. The choice of the optimal method for the extraction of non-fruit parts of sea buckthorn is aimed at accelerating heat and mass transfer processes and increasing the rate of diffusion extraction of biologically active substances. The paper reflects the results of experimental studies of traditional aqueous extraction of non-fruit parts of sea buckthorn, namely leaves, bark, shoots and wood, and the results of intensification of extraction by preliminary freezing of the feedstock. The influence of the raw material freezing rate on the size of the formed ice crystals is analyzed. It has been established that at a freezing rate of 0.1-1 cm/ h, large ice crystals form in the intercellular space of plant raw materials, causing mechanical damage to cellular structures and contributing to better leaching of biologically active substances, which is confirmed by experimental studies.

APA, Harvard, Vancouver, ISO, and other styles

34

Malyushevskaya, А. P., V. N. Tsurkin, А. V. Ivanov, and А. N. Yushchishina. "Intensification of Polysaccharides Extraction from Plant Raw Materials under the Influence of Electric Current." Elektronnaya Obrabotka Materialov 57, no. 5 (October 2021): 66–77. http://dx.doi.org/10.52577/eom.2021.57.5.66.

Full text

Abstract:

The article presents the results of the studies of the intensification of the processes of extraction of water-soluble polysaccharides from plant raw materials – medicinal hyssop (Hyssopus officialis L.) under the action of an electric current. The effect of direct, alternating, and pulsed electric currents on the degree of polysaccharides extraction was studied in comparison with the traditional pharmacopoeiсal method. It is shown that the energy consumption for the extraction process, intensified by a pulsed electric current, is significantly lower compared to extraction by convection heating. At the same time, the use of electric current makes it possible to reduce the limiting processing temperature from 70 °С to 40 °C, this will allow in the future to obtain not only aqueous, but also aqueous-alcoholic and alcoholic extracts, and, consequently, to extract biologically active non-soluble in water substances.

APA, Harvard, Vancouver, ISO, and other styles

35

Vainberg, R. Sh, S. A. Bogdanov, and N. D. Butskii. "Intensification of Extraction of Thermolabile Organic Polymers into a Liquid Electrolyte." Heat Transfer Research 29, no. 1-3 (1998): 140–45. http://dx.doi.org/10.1615/heattransres.v29.i1-3.130.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

DAUDOVA, T. N., T. A. ISIGOVA, L. A. DAUDOVA, and M. M. OMAROVA. "INTENSIFICATION OF ANTHOCYANIN DYE EXTRACTION BY ULTRASONIC TREATMENT OF WILD FRUITS." AIC development problems of the region, no. 1 (2021): 160–63. http://dx.doi.org/10.52671/20790996_2021_1_160.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Santos, DiegoT, Renata Vardanega, and M. A. De Almeida. "Intensification of bioactive compounds extraction from medicinal plants using ultrasonic irradiation." Pharmacognosy Reviews 8, no. 16 (2014): 88. http://dx.doi.org/10.4103/0973-7847.134231.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Miloudi, Kaddour, Abderrahmane Hamimed, Youcef Benmimoun, Yassine Bellebna, Ahmed Taibi, and Amar Tilmatine. "Intensification of Essential Oil Extraction of theMarrubium vulgareUsing Pulsed Electric Field." Journal of Essential Oil Bearing Plants 21, no. 3 (May 4, 2018): 811–24. http://dx.doi.org/10.1080/0972060x.2018.1484820.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Tan, J., Z. D. Liu, Y. C. Lu, J. H. Xu, and G. S. Luo. "Process intensification of H2O2 extraction using gas–liquid–liquid microdispersion system." Separation and Purification Technology 80, no. 2 (July 2011): 225–34. http://dx.doi.org/10.1016/j.seppur.2011.04.030.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Flórez-Fernández, Noelia, María Dolores Torres, María Jesús González-Muñoz, and Herminia Domínguez. "Potential of intensification techniques for the extraction and depolymerization of fucoidan." Algal Research 30 (March 2018): 128–48. http://dx.doi.org/10.1016/j.algal.2018.01.002.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Holbach, Alexander, Erkan Çalışkan, Ho-Suk Lee, and Norbert Kockmann. "Process intensification in small scale extraction columns for counter-current operations." Chemical Engineering and Processing: Process Intensification 80 (June 2014): 21–28. http://dx.doi.org/10.1016/j.cep.2014.03.013.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Preece, K. E., N. Hooshyar, A. J. Krijgsman, P. J. Fryer, and N. J. Zuidam. "Intensification of protein extraction from soybean processing materials using hydrodynamic cavitation." Innovative Food Science & Emerging Technologies 41 (June 2017): 47–55. http://dx.doi.org/10.1016/j.ifset.2017.01.002.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Kotenkova, E. A., A. G. Akhremko, E. K. Polishchuk, M. A. Aryuzina, and M. E. Spirina. "Biotechnological techniques for intensification of protein extraction from the porcine pancreas." Theory and practice of meat processing 7, no. 4 (December 27, 2022): 258–64. http://dx.doi.org/10.21323/2414-438x-2022-7-4-258-264.

Full text

Abstract:

Processing of secondary products after slaughter of farm animals is in demand. The pancreas is a rich source of bioactive protein substances, effective extraction of which is a serious problem today due to their aggregation. The aim of the work was to assess the extractivity of protein substances of the porcine pancreas using sodium chloride, trehalose, arginine, and combination of glycine and proline. The protein concentration was determined in the obtained extracts by the biuret reaction and their protein composition was assessed by densitometry of two-dimensional electropherograms using software ImageMaster™ 2D Platinum powered by Melanie 8.0. The results showed a positive effect of anti-aggregation agents on the release of protein substances into a solution. The highest protein concentration (33.36±0.64 g/l) was observed when adding 1М L-arginine; however, it was conditioned mainly by an increase in the content of three major protein fractions rather than by diversity of the protein composition. In general, the use of 0.9% NaCl as an extractive agent was quite effective, but selectivity to certain protein groups was observed for anti-aggregation agents such as sodium chloride, trehalose, arginine, glycine and proline, as well as their combination. The obtained results are important for intensifying extraction of protein substances including target ones with the subsequent application in different fields.

APA, Harvard, Vancouver, ISO, and other styles

44

Kriel, Frederik H., Claudia Binder, and Craig Priest. "A Multi-Stream Microchip for Process Intensification of Liquid-Liquid Extraction." Chemical Engineering & Technology 40, no. 6 (May 8, 2017): 1184–89. http://dx.doi.org/10.1002/ceat.201600728.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Capaldi, Giorgio, Arianna Binello, Clelia Aimone, Stefano Mantegna, Giorgio Grillo, and Giancarlo Cravotto. "New trends in extraction-process intensification: Hybrid and sequential green technologies." Industrial Crops and Products 209 (March 2024): 117906. http://dx.doi.org/10.1016/j.indcrop.2023.117906.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Aleksanyan, Igor Yurevich, Albert Hamed-Harisovich, Roman Vakhaevich Mutsaev, Miguel Antonio Salvatierra Barzola, and Thi Sen Nguen. "Raising Intensity and Modeling the Process of Inulin Extraction from Raw Materials of Plant Origin." Materials Science Forum 987 (April 2020): 149–56. http://dx.doi.org/10.4028/www.scientific.net/msf.987.149.

Full text

Abstract:

The key and most energy-consuming process in obtaining inulin is the extraction process. The effectiveness of technology as a whole depends on this procedure. The present research is devoted to studying statics and kinetics of inulin water extraction from artichoke with the purpose of intensification, optimization and modeling of extraction process. Analysis of technical and patent literature has allowed to reveal the ways of aggregation of inulin extraction, in particular, by influence of ultrasonic oscillations on the object of processing. To study the statics of the extraction process, i.e. equilibrium states of the system of interacting substances with the purpose of determining equilibrium concentrations at different temperatures with the use of ultrasonic radiation, kinetic laws of the process and to select rational operating parameters and extraction process intensification, a series of experiments and experimental data processing were carried out. On the basis of the obtained data the process modeling is carried out and the model of mass transfer while inulin extraction is calculated. After have been analyzed the obtained results, in particular, fields of inulin concentration in Jerusalem artichoke and kinetic curves of extraction, it was concluded that in the process of extraction there are slight gradients of concentrations observed, which cause "soft" extraction modes. Furthermore, ultrasonic treatment application at the frequency of radiation 20-22 kHz reduces the duration of the extraction process and significantly increases specific output of inulin. The equations obtained are necessary not only to determine the duration of extraction and its rational mode parameters, but also to model the extraction process mathematical results. These research results can be used in the field of food science and industry, as well as in the development and design of food equipment.

APA, Harvard, Vancouver, ISO, and other styles

47

Egüés, Itziar, Fabio Hernandez-Ramos, Iván Rivilla, and Jalel Labidi. "Optimization of Ultrasound Assisted Extraction of Bioactive Compounds from Apple Pomace." Molecules 26, no. 13 (June 22, 2021): 3783. http://dx.doi.org/10.3390/molecules26133783.

Full text

Abstract:

In the present work, the optimization of the extraction of antioxidant compounds from apple pomace using ultrasound technology as an environmentally friendly and intensification process was developed. Different sonication powers, extraction temperatures and extraction times were studied and their influence on extraction yield and characteristics of the extracted samples (total phenolic compounds, flavonoid content and antioxidant capacity) are presented. The elaborated experimental design and the analysis of Pareto and response surface diagrams allowed us to determine the optimal extraction conditions. The conditions that allow the maximum extraction of phenolic compounds were found at 20 min, 90 °C and 50% ultrasound amplitude. Nevertheless, at these conditions, the antioxidant capacity measured by DPPH decreased in the extracted samples.

APA, Harvard, Vancouver, ISO, and other styles

48

DiNardo, Andrea, Jayasankar Subramanian, and Ashutosh Singh. "Intensification of phenolic extraction from yellow European plums by use of conventional, microwave-, and ultrasound-assisted extraction." Separation Science and Technology 55, no. 3 (January 24, 2019): 523–36. http://dx.doi.org/10.1080/01496395.2019.1567547.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Deynichenko, Gregoriy, Vasyl Guzenko, Dmytro Dmytrevskyi, Vitalii Chervonyi, Tatiana Kolisnichenko, Aleksandr Omelchenko, Olga Melnik, Olga Simakova, and Radion Nykyforov. "INVESTIGATION OF THE APPLICATION OF A NEW METHOD OF EXTRACTION INTENSIFICATION OF PECTIN SUBSTANCES FROM A BEET PULP." EUREKA: Physics and Engineering 4 (July 31, 2018): 21–28. http://dx.doi.org/10.21303/2461-4262.2018.00685.

Full text

Abstract:

The aim of research is studying a new method for intensifying extraction of pectin substances during acid extraction of pectin-containing raw materials. The description of the experimental setup and the procedure for processing the results of the investigation of the application of a new method for intensifying the beet pulp extraction are described. The results of experimental studies on the application of a new combined mixing element for intensifying the extraction of pectin-containing raw materials (beet pulp) and its effect on quantitative and qualitative output characteristics are presented. Mathematical models are constructed on the basis of regression equations of the full factorial experiment with the use of a new method of intensifying the extraction process to select input technological parameters for the extraction of pectin substances from pectin-containing raw materials. The rational operating parameters of the process of extraction of pectin substances with the use of a new combinable stirring element are determined. Such working parameters are: the process duration is 1 ... 1.1, the temperature of the working medium is 60 ... 70 ºС, and the hydromodule is 8 ... 10. The research results can be used to study other technological parameters of the extraction process of pectin substances, as well as to develop a technological line for the production of pectin products.

APA, Harvard, Vancouver, ISO, and other styles

50

Al Khawli, Fadila, Mirian Pateiro, Rubén Domínguez, José M. Lorenzo, Patricia Gullón, Katerina Kousoulaki, Emilia Ferrer, Houda Berrada, and Francisco J. Barba. "Innovative Green Technologies of Intensification for Valorization of Seafood and Their By-Products." Marine Drugs 17, no. 12 (December 6, 2019): 689. http://dx.doi.org/10.3390/md17120689.

Full text

Abstract:

The activities linked to the fishing sector generate substantial quantities of by-products, which are often discarded or used as low-value ingredients in animal feed. However, these marine by-products are a prominent potential good source of bioactive compounds, with important functional properties that can be isolated or up-concentrated, giving them an added value in higher end markets, as for instance nutraceuticals and cosmetics. This valorization of fish by-products has been boosted by the increasing awareness of consumers regarding the relationship between diet and health, demanding new fish products with enhanced nutritional and functional properties. To obtain fish by-product-derived biocompounds with good, functional and acceptable organoleptic properties, the selection of appropriate extraction methods for each bioactive ingredient is of the outmost importance. In this regard, over the last years, innovative alternative technologies of intensification, such as ultrasound-assisted extraction (UAE) and supercritical fluid extraction (SFE), have become an alternative to the conventional methods in the isolation of valuable compounds from fish and shellfish by-products. Innovative green technologies present great advantages to traditional methods, preserving and even enhancing the quality and the extraction efficiency, as well as minimizing functional properties’ losses of the bioactive compounds extracted from marine by-products. Besides their biological activities, bioactive compounds obtained by innovative alternative technologies can enhance several technological properties of food matrices, enabling their use as ingredients in novel foods. This review is focusing on analyzing the principles and the use of UAE and SFE as emerging technologies to valorize seafoods and their by-products.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Extraction intensification'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles