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Journal articles on the topic 'Micro-distillation'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 April 2022

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1

Seok, D. R., and Sun-Tak Hwang. "Zero-gravity distillation utilizing the heat pipe principle(micro-distillation)." AIChE Journal 31, no. 12 (December 1985): 2059–65. http://dx.doi.org/10.1002/aic.690311215.

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2

Winshell, Elaine B., and Robin P. Ertl. "Micro vacuum-distillation of radioactive liquids." Analytical Chemistry 58, no. 7 (June 1986): 1599–600. http://dx.doi.org/10.1021/ac00298a083.

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3

Tang, Yin, Yongjie Zheng, Jingzhi Tian, and Jing Sun. "Process Intensification of Chemical Exchange Method for Boron Isotope Separation Using Micro-Channel Distillation Technology." Micromachines 12, no. 10 (October 6, 2021): 1222. http://dx.doi.org/10.3390/mi12101222.

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A micro-channel distillation device was used for the process intensification method to separate boron isotopes, 10B and 11B. Three-dimensional (3D) printing technology was introduced to manufacture the micro-channel device, which used the chemical exchange method with anisole as the donor to separate the boron isotopes. This device was tested in total reflux mode, and the height of an equivalent theoretical plate of the micro-channel distillation equipment was reduced to 1.56 cm. The accurate control of pressure and temperature, as well as the flow rate of the complex, were factors that affected separation ability. Thus, for process intensification, this micro-channel distillation device can be operated horizontally and connected in series into similar modules to effectively improve separation efficiency and reduce the size of the equipment.

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4

Gao, Kun Yang, Xiao Feng Huang, Yong Yang, Lei Yang, Qi Dong Xia, Yan Fu Wei, Tao Zhou, and Yang Song Qin. "Advances on the Extraction and Separation Technologies in Tea Aroma Components Research." Advanced Materials Research 301-303 (July 2011): 421–25. http://dx.doi.org/10.4028/www.scientific.net/amr.301-303.421.

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Study on the tea aroma components is greatly significant, which are important factors in tea quality valuation.In recent years, nine main methods are under consideration：simultaneous distillation and solvent extraction, vacuum distillation extraction, steam distillation under reduced pressure, headspace analysis, solid-phase micro-extractions, headspace solid-phase micro-extractions, tea liquid absorption, supercritical fluid extraction and electronic nose. Meanwhile, advantages and disadvantages of each method were analyzed, in order to conduct technological guidance on the extraction and separation technologies in tea aroma components and provide a theoretical basis in improvement of each method.

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5

Hibara, Akihide, Kunihiko Toshin, Takehiko Tsukahara, Kazuma Mawatari, and Takehiko Kitamori. "Microfluidic Distillation Utilizing Micro–Nano Combined Structure." Chemistry Letters 37, no. 10 (October 5, 2008): 1064–65. http://dx.doi.org/10.1246/cl.2008.1064.

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6

Sundberg, Aarne, Petri Uusi-Kyyny, and Ville Alopaeus. "Novel micro-distillation column for process development." Chemical Engineering Research and Design 87, no. 5 (May 2009): 705–10. http://dx.doi.org/10.1016/j.cherd.2008.09.011.

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7

Liu, Chan-Chiung, Yao-Nan Wang, Lung-Ming Fu, and Chien Chieh. "Micro-distillation system for formaldehyde concentration detection." Chemical Engineering Journal 304 (November 2016): 419–25. http://dx.doi.org/10.1016/j.cej.2016.06.114.

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8

Yang, Ruey-Jen, Chan-Chiung Liu, Yao-Nan Wang, Hui-Hsiung Hou, and Lung-Ming Fu. "A comprehensive review of micro-distillation methods." Chemical Engineering Journal 313 (April 2017): 1509–20. http://dx.doi.org/10.1016/j.cej.2016.11.041.

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9

Zhao, Shanfang, Ruichang Gao, and Peng Bai. "Column Pressure Control for Micro-Positive Pressure Distillation." Asian Journal of Chemistry 25, no. 15 (2013): 8501–4. http://dx.doi.org/10.14233/ajchem.2013.14804.

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10

Zhao, Shan Fang, Rui Chang Gao, and Peng Bai. "Study of Inert Current System Designed for Pressure Control of Micro-Positive Pressure Distillation." Applied Mechanics and Materials 275-277 (January 2013): 659–64. http://dx.doi.org/10.4028/www.scientific.net/amm.275-277.659.

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Micro-positive pressure distillation is commonly used in processes where the feed stock or products are oxygen sensitive. Constant column pressure is critical for such process as pressure fluctuations may change column performance and the oxygen-free environment leading to dramatic change in product quality. In this paper, an inert current system designed for micro-positive pressure distillation is introduced. Details of both the operation principle and system features including response time and pressure deviation are studied. Four mathematical equations describing the features are put forward to help select the appropriate parameter. This system is promising for its high sensitivity and simple construction.

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11

Mansfeldt, Tim, and Heidi Biernath. "Determination of total cyanide in soils by micro-distillation." Analytica Chimica Acta 406, no. 2 (February 2000): 283–88. http://dx.doi.org/10.1016/s0003-2670(99)00770-9.

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12

Stanisch, Benjamin, Tim Wellsandt, and Jochen Strube. "Development of Micro Separation Technology Modules. Part 2: Distillation." Chemie Ingenieur Technik 87, no. 9 (July 17, 2015): 1207–14. http://dx.doi.org/10.1002/cite.201400075.

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13

Adiche, Chafika, and Kai Sundmacher. "Experimental investigation on a membrane distillation based micro-separator." Chemical Engineering and Processing: Process Intensification 49, no. 4 (April 2010): 425–34. http://dx.doi.org/10.1016/j.cep.2010.02.009.

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14

Campbell, Duncan C. "Micro-Kjeldahl Analysis Using 40-Tube Block Digestor and Steam Distillation." Journal of AOAC INTERNATIONAL 69, no. 6 (November 1, 1986): 1013–16. http://dx.doi.org/10.1093/jaoac/69.6.1013.

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Abstract A steam distillation unit was developed for use with a 40-tube block digestor (25 x 290 mm tubes). Initial digestion for 10 min with sufficient H2SO4 alone avoids frothing. A K2SO4/HgO mixture is then added and the digestion is continued. Use of condenser tubes and a fan to cool condensers and the tops of digestion tubes allows the use of high block temperatures (450°C) and long digestion times (1.5 h) with little loss of acid. The steam distillation unit incorporates a large head which contains the steam/sample solution mixture during distillation. The large distillation head allows the acid and base solutions to be sufficiently dilute to avoid a violent reaction when mixed. Distillation was 99.9% complete about 2.2 min after distillate appeared in the condenser. To demonstrate the use of the apparatus, rapeseed (Brassica napus cv. Altex) was ground and forty 0.5 g samples were analyzed giving the following results: mean 23.34%, SD 0.07, CV 0.005%, min. 23.17%, max. 23.46%, range 0.29%. Complete digestion and recovery rate were indicated for nicotinic acid by recovery of 99.9-100.0% of the nitrogen.

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15

Sen, P. V., K. Bhuwanesh, K. Ashutosh, Z. Engineer, S. Hegde, P. K. Sen, and R. Lal. "Micro-Scale Multi-Effect Distillation System for Low Steam Inputs." Procedia Engineering 56 (2013): 63–67. http://dx.doi.org/10.1016/j.proeng.2013.03.089.

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16

Hirose, Yasuo, and Hiroshi Tachibana. "A way to solve difficult distillation problems containing micro-component." KAGAKU KOGAKU RONBUNSHU 13, no. 6 (1987): 838–43. http://dx.doi.org/10.1252/kakoronbunshu.13.838.

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17

Jordan, David. "Direct Collection of Distillation Fractions into Vials: A Method for the Micro/Semi-Micro Scale Laboratory." Journal of Chemical Education 71, no. 1 (January 1994): A5. http://dx.doi.org/10.1021/ed071pa5.1.

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18

Dardioti, A., C. M. Cook, S. Kokkini, and T. Lanaras. "Composition ofSatureja horvatiisubsp.macrophyllaOil Isolated by Hydrodistillation and Micro-Simultaneous Distillation/Extraction." Journal of Essential Oil Research 9, no. 6 (November 1997): 663–66. http://dx.doi.org/10.1080/10412905.1997.9700807.

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19

Lv, Jiang, and Zhi-li Chen. "Analysis the Performance of Hydrophilic and Corrosion Resistant Coatings on the Distillation Desalination Tube in High Temperature Seawater." IOP Conference Series: Earth and Environmental Science 945, no. 1 (December 1, 2021): 012043. http://dx.doi.org/10.1088/1755-1315/945/1/012043.

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Abstract Distillation desalination can use solar energy and other renewable energy, it is one of the most potential technologies for desalination. However, distillation desalination system pervades problems such as low desalination efficiency and poor corrosion resistance. Based on our preliminary study (i.e., apply hydrophilic modification on the surface of distillation desalination tube can effectively improve desalination efficiency), this paper introduces a composite functional coating with the micro-arc oxidation (MAO) coatings sealed with hydrophilic organic coating-TiO2 hybrid sols (OT-MAO) by sol-gel process. Through contact angle measurement, scanning electron microscopy (SEM) and potentiodynamic polarization test to analyze and compare the performance of hydrophilicity and corrosion resistance of the MAO coatings and the OT-MAO composite coatings in high temperature seawater environment. The corrosion mechanism of the OT-MAO composite coatings was analyzed by electrochemical impedance spectroscopy (EIS). The results show that the OT-MAO composite coatings in high temperature seawater has much better hydrophilicity and corrosion resistance than the MAO coatings. This paper provides theoretical and technical reference for developing a new type of surface modified distillation desalination tube.

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20

Brasil, Marcos A. S., Luiz H. Gomes, Marcos Y. Kamogawa, and Luiz Carlos Basso. "Ethanol determination in fermented sugarcane substrates by a diffusive micro-distillation device." Journal of Microbiological Methods 178 (November 2020): 106085. http://dx.doi.org/10.1016/j.mimet.2020.106085.

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21

Sen, P. K., Padma Vasudevan Sen, Anurag Mudgal, and S. N. Singh. "A small scale multi-effect distillation (MED) unit for rural micro enterprises." Desalination 279, no. 1-3 (September 2011): 27–37. http://dx.doi.org/10.1016/j.desal.2010.11.005.

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22

Sundberg, Aarne T., Petri Uusi-Kyyny, Kaj Jakobsson, and Ville Alopaeus. "Control of reflux and reboil flow rates for milli and micro distillation." Chemical Engineering Research and Design 91, no. 5 (May 2013): 753–60. http://dx.doi.org/10.1016/j.cherd.2012.08.009.

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23

Tan, Hoi-Fang, Why-Ling Tan, B. S. Ooi, and C. P. Leo. "Superhydrophobic PVDF/micro fibrillated cellulose membrane for membrane distillation crystallization of struvite." Chemical Engineering Research and Design 170 (June 2021): 54–68. http://dx.doi.org/10.1016/j.cherd.2021.03.027.

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24

Hu, Cuicui, Zhensheng Yang, Qichao Sun, Zhihua Ni, Guofei Yan, and Zhiying Wang. "Facile Preparation of a Superhydrophobic iPP Microporous Membrane with Micron-Submicron Hierarchical Structures for Membrane Distillation." Polymers 12, no. 4 (April 20, 2020): 962. http://dx.doi.org/10.3390/polym12040962.

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A facile method combining micro-molding with thermally-induced phase separation (TIPS) to prepare superhydrophobic isotacticpolypropylene (iPP) microporous membranes with micron-submicron hierarchical structures is proposed in this paper. In this study, the hydrophobicity of the membrane was controlled by changing the size of micro-structures on the micro-structured mold and the temperature of the cooling bath. The best superhydrophobicity was achieved with a high water contact angle (WCA) of 161° and roll-off angle of 2°, which was similar to the lotus effect. The permeability of the membrane was greatly improved and the mechanical properties were maintained. The membrane prepared by the new method and subjected to 60h vacuum membrane distillation (VMD) was compared with a conventional iPP membrane prepared via the TIPS process. The flux of the former membrane was 31.2 kg/m2·h, and salt rejection was always higher than 99.95%, which was obviously higher than that of the latter membrane. The deposition of surface fouling on the former membrane was less and loose, and that of the latter membrane was greater and steady, which was attributed to the micron-submicron hierarchical structure of the former and the single submicron-structure of the latter. Additionally, the new method is expected to become a feasible and economical method for producing an ideal membrane for membrane distillation (MD) on a large scale.

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25

Fath, Hassan E. S., and Khaled Abdelrahman. "Micro-climatic environmental conditions inside a greenhousewith a built-in solar distillation system." Desalination 171, no. 3 (January 2005): 267–87. http://dx.doi.org/10.1016/j.desal.2004.05.007.

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26

Vaidya, Sarthak, Haribalakrishnammal Vaidyanathan, and Sonali R. Dhokpande. "Process Intensification and its Applications - A Critical Review." International Journal of ChemTech Research 13, no. 4 (2020): 402–12. http://dx.doi.org/10.20902/ijctr.2019.130409.

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The problems faced by the various industries are high energy consumption which further increases the cost of production followed by reduced productivity and conversion, longer residence time, and pollution caused by industrial waste. Many researchers have found various alternative pathways to overcome these drawbacks. The same products were obtained in a better way by process intensification. Any process can be intensified either by introducing entirely a new process or by combing two or more conventional methods to form a new hybrid process e.greactive distillation, micro-reactors, etc. Due to an increase in population and less availability of land, reducing the chemical plant footprints is highly appreciable which is possible by process intensification. In this paper, we have reviewed the majority of the processes that have been intensified into a new process such as bioprocesses, extraction, distillation, leaching, Biofuels production, Desalination, etc.

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27

Martínez-Castro, Isabel, Jesus Sanz, Lourdes Amigo, Mercedes Ramos, and Pedro Martín-Alvarez. "Volatile components of Manchego cheese." Journal of Dairy Research 58, no. 2 (May 1991): 239–46. http://dx.doi.org/10.1017/s0022029900029782.

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SummaryVolatile components of four batches of Manchego cheese were studied throughout their ripening process. Samples were submitted to a micro simultaneous distillation-extraction procedure, and then analysed by capillary gas chromatography (GC) and combined GC and mass spectrometry. Among other components, four homologous series of compounds were found: free fatty acids, methyl ketones, ethyl and methyl esters of even fatty acids. Ripening stage can be approximately estimated from the concentrations of some components.

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28

Jin, Ri Jun, Chao Qun Chu, Xiao Ping Wang, Dong Hao Li, and Xiang Fan Piao. "Research on Multifunctional Gas Chromatography Sample Pretreatment Apparatus." Applied Mechanics and Materials 347-350 (August 2013): 3440–45. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.3440.

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Multifunctional gas chromatography sample pretreatment apparatus (hereinafter referred to as pretreatment apparatus), which is developed on the basis of gas purge micro-syringe extraction (GP-MSE) technique, is a gas chromatography (GC) sample pretreatment apparatus that integrates extraction, purification, concentration and predissociation. The quantitative and qualitative analysis results analyzed by GC-MS for volatile oil that extracted from the plant samples by steam distillation method and pretreatment apparatus, show that the volatile components extracted by the apparatus outnumber the ones extracted by steam distillation method clearly, and the content of major constituents extracted by the apparatus is higher. The apparatus have advantages of low consumption of agentia, short extraction time, high enrichment efficiency, simple structure, convenience in usage and low operating costs. The apparatus can be widely used in the areas of medicine, agriculture, food, quality control to the sample pretreatment of solid or liquid sample.

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29

Khalifa, Atia E. "Performances of air gap and water gap MD desalination modules." Water Practice and Technology 13, no. 1 (March 1, 2018): 200–209. http://dx.doi.org/10.2166/wpt.2018.034.

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Abstract Membrane distillation (MD) is a promising thermally-driven membrane separation technology for water desalination. In MD, water vapor is being separated from the hot feed water solution using a micro-porous hydrophobic membrane, due to the difference in vapor pressures across the membrane. In the present work, experiments are conducted to compare the performance of water gap membrane distillation (WGMD) and air gap membrane distillation (AGMD) modules under the main operating and design conditions including the feed and coolant temperatures, membrane material and pore sizes, and the gap width. Results showed that the WGMD module produced higher fluxes as compared to the AGMD module, for all test conditions. The feed temperature is the dominant factor affecting the system flux. The permeate flux increases with reducing the gap width for both water and air gap modules. However, WGMD module was found to be less sensitive to the change in the gap width compared to the AGMD module. The PTFE membrane produced higher permeate flux as compared to the PVDF membrane. Bigger mean pore diameter enhanced the permeate flux, however, this enhancement is marginal at high feed temperatures. With increasing the feed temperature, the GOR values increase and the specific energy consumption decreases.

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30

Ko, Chia-Chieh, Chien-Hua Chen, Yi-Rui Chen, Yu-Hsun Wu, Soon-Chien Lu, Fa-Chun Hu, Chia-Ling Li, and Kuo-Lun Tung. "Increasing the Performance of Vacuum Membrane Distillation Using Micro-Structured Hydrophobic Aluminum Hollow Fiber Membranes." Applied Sciences 7, no. 4 (April 4, 2017): 357. http://dx.doi.org/10.3390/app7040357.

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31

Fan, Tingting, Zhenhuan Li, Bowen Cheng, and Jianxin Li. "Preparation, characterization of PPS micro-porous membranes and their excellent performance in vacuum membrane distillation." Journal of Membrane Science 556 (June 2018): 107–17. http://dx.doi.org/10.1016/j.memsci.2018.03.084.

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32

Xin, Zena, Panchao Zhao, Jialin Chen, Yaohong Ma, Ying Xu, Hao Cui, and Wei Yi. "Processing and properties of high-purity micro-lamellate (NH4)2RuCl6 particles." Green Processing and Synthesis 7, no. 1 (February 23, 2018): 16–22. http://dx.doi.org/10.1515/gps-2016-0128.

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Abstract(NH4)2RuCl6is an important precursor in the synthesis of Ru powder with high-purity requirement. In this study, high-purity (>99.999 wt%) micro-sized (NH4)2RuCl6pieces were synthesized by distillation and precipitation from crude Ru powder. Then, the thermal decomposition behavior of the (NH4)2RuCl6pieces was investigated. The decomposition process included two stages. First, (NH4)2RuCl6was decomposed from 255.0°C to 314.0°C, with the endothermic peak located at 309.4°C. At this stage, HCl and NH3were released, while the dense micro-pieces were transformed to loosened micro-pieces due to the thermal decomposition. Then, the solid phase [(NH3)4Ru3Cl12] kept decomposing from 314.0°C to 352.7°C, HCl and N2were released, and agglomerated Ru particles were achieved. Thermogravimetric analysis-differential thermal analysis-mass spectrum coupling (TG-DTA-MS) was used to monitor the thermal decomposition process and identify the released gaseous phases, respectively. The solid phases in different stages were characterized by high-temperature X-ray diffraction (HTXRD). A good understanding of the processing and thermal decomposition of (NH4)2RuCl6is crucial in the creation of Ru products.

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33

Al-Anezi, Adnan Al-Hathal, Adel O. Sharif, M. I. Sanduk, and A. R. Khan. "Experimental Investigation of Heat and Mass Transfer in Tubular Membrane Distillation Module for Desalination." ISRN Chemical Engineering 2012 (March 21, 2012): 1–8. http://dx.doi.org/10.5402/2012/738731.

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Membrane distillation is a thermally driven membrane process for seawater desalination and purification at moderate temperatures and pressures. A hydrophobic micro-porous membrane is used in this process, which separates hot and cold water, allowing water vapor to pass through; while restricting the movement of liquid water, due to its hydrophobic nature. This paper provides an experimental investigation of heat and mass transfer in tubular membrane module for water desalination. Different operating parameters have been examined to determine the mass transport mechanism of water vapor. Based on the experimental results, the effects of operating parameters on permeate flux and the heat transfer analysis have been presented and discussed in details.

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34

García-Martínez, J. C., A. Dutta, G. Chávez, J. A. De los Reyes, and C. O. Castillo-Araiza. "Hydrodesulfurization of Dibenzothiophene in a Micro Trickle Bed Catalytic Reactor under Operating Conditions from Reactive Distillation." International Journal of Chemical Reactor Engineering 14, no. 3 (June 1, 2016): 769–83. http://dx.doi.org/10.1515/ijcre-2015-0126.

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Abstract The hydrodesulfurization (HDS) of dibenzothiophene (DBT) is investigated over a commercial NiMoP/γ-Al2O3 catalyst in a micro trickled bed reactor (Micro-TBR) at operating conditions of a reactive distillation (RD) column. An analysis with and without reaction is carried out to have a first understanding on the complex interaction between kinetics and transport phenomena. A set of well-accepted criteria is evaluated to elucidate the presence of heat and mass transport limitations. Residence time distribution (RTD) experiments are performed to evaluate axial dispersion through the estimation of axial dispersion coefficient (Daxial,L) from a convection-dispersion model. Experiments with reaction are carried out using hydrogen and DBT as feedstock at reaction temperatures from 533 to 599 K, pressures from 1.5 to 2.5 MPa and inlet molar flow of DBT from 4 to 12×10–8 mol.s–1. A pseudo heterogeneous model accounting for mass transport limitations is used to describe experiments under reaction conditions. The main findings can be summarized as follows: most of RD operating conditions lead to the presence of interfacial mass transport limitations at both interfaces L-S and G-L; convection-dispersion model is able to describe satisfactorily RTD observations, suggesting that axial dispersion phenomena are negligible; conversion of DBT ranges from ca. 22 to 90% having a selectivity to by-product molecules from 30 to 80%, respectively; and the pseudo heterogeneous reaction model describes observations adequately obtaining activation energies ranging from 49 to 62 kJ mol–1 at pressures from 1.5 to 2.5 MPa, respectively. Estimated activation energies are comparatively lower than the activation energies reported in literature for the conventional HDS process, i.e. 40–160 kJ.mol–1, thereby suggesting an apparent catalytic energy savings by using RD technology.

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35

Harandi, Hesam Bazargan, Anahita Asadi, Hossein Fathi, and Pang-Chieh Sui. "Combined macroscopic and pore scale modeling of direct contact membrane distillation with micro-porous hydrophobic membranes." Desalination 514 (October 2021): 115171. http://dx.doi.org/10.1016/j.desal.2021.115171.

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36

Buaban, Preeyaporn, Anurak Petiraksakul, and Sakoraphob Banlengchit. "Treatment of Wastewater by Coagulation Using Phytochemical." Advanced Materials Research 781-784 (September 2013): 2357–60. http://dx.doi.org/10.4028/www.scientific.net/amr.781-784.2357.

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The objective of this study is to compare organic and inorganic coagulants in coagulation-flocculation and sedimentation, using a jar test apparatus. Six types of coagulants, namely extract solution of moringa oleifera seed with distillation water (Moringa-H), extract solution of moringa oleifera with sodium chloride (Moringa-N), Micro-nice®bio separator A from Technogreen Limited, aluminium sulfate (alum), ferric chloride (FeCl3) and polyaluminium chloride (PAC) were investigated using three types of synthetic wastewater, kaolin suspension, soymilk solution and oily wastewater for determination of the optimum dosage and coagulation mechanism. The results indicated that PAC was able to remove turbidity of 90-94%, pH in the range of 6-7 in the kaolin suspension concentration range of 20-100 mg/L, while the Moringa-H showed turbidity removal of 66-91% which was better than Moringa-N and dry sediment using Micro-Nice®gave minimum sludge. The Micro-Nice®also showed high turbidity removal in colloid and oily wastewater. The optimum dosage of Micro-Nice®was in the range of 80-120 mg/L for colloid removal of 89-96% and COD removal of 37-73% at the colloid concentration range of 100-1000 mg/L, while 10 g/L oily wastewater showed that the optimum dosage of Micro-Nice®was 200 mg/L for turbidity removal of 99%, COD removal of 73% and oil removal of 97%.

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37

Hu, Yanni, Mei Tian, and Hong Zhang. "Molecular Imaging in Therapeutic Efficacy Assessment of Targeted Therapy for Nonsmall Cell Lung Cancer." Journal of Biomedicine and Biotechnology 2012 (2012): 1–10. http://dx.doi.org/10.1155/2012/419402.

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Membrane distillation is a thermally driven membrane process for seawater desalination and purification at moderate temperatures and pressures. A hydrophobic micro-porous membrane is used in this process, which separates hot and cold water, allowing water vapor to pass through; while restricting the movement of liquid water, due to its hydrophobic nature. This paper provides an experimental investigation of heat and mass transfer in tubular membrane module for water desalination. Different operating parameters have been examined to determine the mass transport mechanism of water vapor. Based on the experimental results, the effects of operating parameters on permeate flux and the heat transfer analysis have been presented and discussed in details.

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38

Poyadji, Kleopatra, Marinos Stylianou, Agapios Agapiou, Christos Kallis, and Nikolaos Kokkinos. "Determination of Quality Properties of Low-Grade Biodiesel and Its Heating Oil Blends." Environments 5, no. 9 (August 24, 2018): 96. http://dx.doi.org/10.3390/environments5090096.

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This research work examined how biodiesel produced from frying oils affects the physicochemical properties of its mixtures with conventional heating oil. Through the characterization of biodiesel blends and heating oil, the purpose is to produce an improved heating oil that will meet the specifications of the existing legislation for heating oil, while positively contributing to reducing the production of pollutants. The percentage of biodiesel added to a conventional diesel fuel contributes to the reduction of the pollutants produced during combustion. The examined biodiesel is considered the residual product, which was produced at a factory in Cyprus, and was deemed unsuitable for export, because it does not meet the legal requirements. Using specific volumes of these mixtures, twelve parameters were determined in order to investigate the effect of the mixtures: kinematic viscosity, sulfur content, micro carbon residue (MCR), distillation curves, density, cloud point (CP), fatty acid methyl esters (FAMEs) content, heat of combustion, iodine value (IV), cetane index (CI) after distillation, oxidation stability, and cold filter plugging point (CFPP). A number of fuel properties including the kinematic viscosity, MCR, distillation temperature—up to 80% distillate—and density showed an increase as the percentage of FAMEs raised from 2.5 to 50%, while others showed a mixed behavior (e.g., IV, CP, CI, CFPP), and the rest an inverse trend (e.g., sulfur content, heat of combustion and oxidation stability). An efficient potential utilization of a residual domestic product is proposed, while the pollutants that accumulate on the urban atmospheres during the winter months, due to increased heating needs of homes and other public or private buildings, will be significantly reduced.

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39

Zhang, Wei, Ying Li, Jun Liu, Baoan Li, and Shichang Wang. "Fabrication of hierarchical poly (vinylidene fluoride) micro/nano-composite membrane with anti-fouling property for membrane distillation." Journal of Membrane Science 535 (August 2017): 258–67. http://dx.doi.org/10.1016/j.memsci.2017.04.051.

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Zeng, Zhi, Runqian Xie, Tao Zhang, Han Zhang, and Jie Yu Chen. "Analysis of Volatile Compositions of Magnolia biondii Pamp by Steam Distillation and Headspace Solid Phase Micro-extraction." Journal of Oleo Science 60, no. 12 (2011): 591–96. http://dx.doi.org/10.5650/jos.60.591.

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Chueachot, Romteera, and Saksit Chanthai. "Spectrophotometric Determination of Trace Cyanide in Fruit Wines by the Catalytic Reaction of Ninhydrin following Micro-distillation." Oriental Journal of Chemistry 30, no. 1 (March 30, 2014): 119–48. http://dx.doi.org/10.13005/ojc/300115.

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Nakanishi, Nao, Tetsuya Yokoyama, and Akira Ishikawa. "Refinement of the Micro‐Distillation Technique for Isotopic Analysis of Geological Samples with pg‐Level Osmium Contents." Geostandards and Geoanalytical Research 43, no. 2 (April 16, 2019): 231–43. http://dx.doi.org/10.1111/ggr.12262.

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Sen, P. K., Padma Vasudevan Sen, Anurag Mudgal, S. N. Singh, S. K. Vyas, and Philip Davies. "A small scale Multi-effect Distillation (MED) unit for rural micro enterprises: Part I—design and fabrication." Desalination 279, no. 1-3 (September 2011): 15–26. http://dx.doi.org/10.1016/j.desal.2010.11.003.

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Sen, P. K., Padma Vasudevan Sen, Anurag Mudgal, and S.N. Singh. "A small scale multi-effect distillation (MED) unit for rural micro enterprises: Part-III Heat transfer aspects." Desalination 279, no. 1-3 (September 2011): 38–46. http://dx.doi.org/10.1016/j.desal.2010.11.006.

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McLeod, S. "Determination of total soil and plant nitrogen using a micro-distillation unit in a continuous flow analyzer." Analytica Chimica Acta 266, no. 1 (August 1992): 113–17. http://dx.doi.org/10.1016/0003-2670(92)85285-e.

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Liu, Chunjiao, Xiaodong Li, Rui Li, Qiang Yang, Hongping Zhang, Bo Yang, and Guangcheng Yang. "Laser ignited combustion of graphene oxide/nitrocellulose membranes for solid propellant micro thruster and solar water distillation." Carbon 166 (September 2020): 138–47. http://dx.doi.org/10.1016/j.carbon.2020.05.014.

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González-Almenara, Rafael, Pablo Rodríguez de Arriba, Francesco Crespi, David Sánchez, Antonio Muñoz, and Tomás Sánchez-Lencero. "Supercritical Carbon Dioxide Cycles for Concentrated Solar Power Plants: A Possible Alternative for Solar Desalination." Processes 10, no. 1 (December 30, 2021): 72. http://dx.doi.org/10.3390/pr10010072.

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This manuscript investigates the supercritical carbon dioxide (sCO2) power cycle employed in the power block of concentrated solar power (CSP) plants—solar tower—as an alternative for solar desalination, developed with either distillation or reverse osmosis. This concept is investigated as a possible up-scaling of the SOLMIDEFF project, originally based on a hot-air micro gas turbine combined with a solar dish collector. For the upscaled concept, five different sCO2 cycles are considered, chosen amongst the best-performing configurations proposed in the literature for CSP applications, and modelled with Thermoflex software. The influence of ambient conditions is studied, considering two minimum cycle temperatures (35 °C and 50 °C), corresponding to Santa Cruz de Tenerife and Abu Dhabi, respectively. The results show that the low temperatures at the inlet of the heat rejection unit compromise the viability of distillation technologies. On the other hand, the high thermal efficiency achieved by these cycles, especially with the recompression and partial cooling layouts, reduces the specific energy consumption when combined with reverse osmosis (RO), below that of photovoltaic (PV)+RO. Feed-water preheating is explored as a solution to further reduce energy consumption, concluding that its actual interest is not clear and strongly depends on the location considered and the corresponding water quality standards.

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Tian, Ling, Zhichao Wang, Bokun He, Chu He, Dingwen Wang, and Deshi Li. "Knowledge Distillation of Grassmann Manifold Network for Remote Sensing Scene Classification." Remote Sensing 13, no. 22 (November 11, 2021): 4537. http://dx.doi.org/10.3390/rs13224537.

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Due to device limitations, small networks are necessary for some real-world scenarios, such as satellites and micro-robots. Therefore, the development of a network with both good performance and small size is an important area of research. Deep networks can learn well from large amounts of data, while manifold networks have outstanding feature representation at small sizes. In this paper, we propose an approach that exploits the advantages of deep networks and shallow Grassmannian manifold networks. Inspired by knowledge distillation, we use the information learned from convolutional neural networks to guide the training of the manifold networks. Our approach leads to a reduction in model size, which addresses the problem of deploying deep learning on resource-limited embedded devices. Finally, a series of experiments were conducted on four remote sensing scene classification datasets. The method in this paper improved the classification accuracy by 2.31% and 1.73% on the UC Merced Land Use and SIRIWHU datasets, respectively, and the experimental results demonstrate the effectiveness of our approach.

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Messaoudi, Mohammed, Abdelkrim Rebiai, Barbara Sawicka, Maria Atanassova, Hamza Ouakouak, Imane Larkem, Chukwuebuka Egbuna, et al. "Effect of Extraction Methods on Polyphenols, Flavonoids, Mineral Elements, and Biological Activities of Essential Oil and Extracts of Mentha pulegium L." Molecules 27, no. 1 (December 21, 2021): 11. http://dx.doi.org/10.3390/molecules27010011.

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Our study evaluated the in vitro antioxidant properties, antibacterial and antifungal activities, anti-inflammatory properties, and chemical composition of the essential oils (EOs), total phenol, and total flavonoid of wild Mentha pulegium L. This study also determined the mineral (nutritional and toxic) elements in the plant. The EOs were extracted using three techniques—hydro distillation (HD), steam distillation (SD), and microwave-assisted distillation (MAD)—and were analyzed using chromatography coupled with flame ionization (GC-FID) and gas chromatography attached with mass spectrometry detector (GC-MS). The antioxidant effects of the EOs were tested with 2,2-diphenyl-1-picrylhydrazyl (DPPH) and ABTS (2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid), while the antibacterial and antifungal activities of the EO and methanolic extract were tested using Staphylococcus aureus, Bacillus subtilis, Pseudomonas aeruginosa, Escherichia coli, and Candida albicans. Twenty-six compounds were identified in the essential oil, representing 97.73% of the total oil, with 0.202% yield. The major components were pulegone (74.81%), menthone (13.01%) and piperitone (3.82%). Twenty-one elements, including macro- and micro-elements (Ba, Br, Ca, Cl, Co, Cr, Cs, Eu, Fe, K, Mg, Mn, Mo, Na, Rb, Sb, Sc, Sr, Th, U and Zn), were detected using neutron activation analysis (INAA) and inductively coupled plasma optical emission spectrometry (ICP-OES), with the concentration of mineral element close to the FAO recommendation. The results show that the EOs and extracts from Mentha pulegium L. had significant antimicrobial activities against the microorganisms, including five human pathogenic bacteria, one yeast (Candida albicans), and one phytopathogenic fungi. The in vivo anti-inflammatory activities of the leaf extracts were confirmed. The results indicate that the EOs and extracts from Mentha pulegium L. have promising applications in the pharmaceutical industries, clinical applications, and in medical research.

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Mansur, Dieni, Aminuddin Aminuddin, and Verina J. Wargadalam. "Production of Bio-hydrocarbon from Refined-Bleach-Deodorized Palm Oil using Micro Activity Test Reactor." Reaktor 20, no. 2 (June 30, 2020): 75–80. http://dx.doi.org/10.14710/reaktor.20.2.75-80.

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Catalytic cracking of vegetable oil for the production of bio-hydrocarbons had been developed. In this study, the catalytic cracking of Refined-Bleach-Deodorized Palm Oil (RBDPO) had carried out over Fluid Catalytic Cracking Unit (FCCU) equilibrium catalyst in a micro activity test reactor at 510°C under various catalyst to oil (CTO) ratio of 1.20 - 2.01 g/g. The catalytic cracking of RBDPO had produced the organic liquid product (OLP) containing bio-hydrocarbon, water, gas, and coke on the catalyst converted to CO2 during the catalyst regeneration process. The increase in CTO ratio from 1.20 to 2.01, OLP yield decreased from 80.48% to 70.12%. The OLP was separated into gasoline, light cycle oil (LCO), and heavy cycle oil (HCO) based on boiling point difference by a simulated distillation gas chromatography (SimDis GC). High gasoline fraction as 31.56% was produced at CTO of 2.01 g/g. The gasoline fraction contained olefins, aromatics, paraffin, iso-paraffins, and a small amount of naphthenes and oxygenates. The presence of chemicals in the gasoline fraction influenced the research octane number (RON) of the fuel.Keyword: bio-hydrocarbon; catalytic cracking; micro activity test reactor; RBDPO

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