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Technologies for extracting lipids from oleaginous microorganisms for biodiesel production

Cunwen WANG, Lu CHEN, Bajpai RAKESH, Yuanhang QIN, Renliang LV

Frontiers in Energy 2012, Volume 6, Issue 3, Pages 266-274 doi: 10.1007/s11708-012-0193-y

Abstract: The process of biodiesel production from microorganisms involves many steps, of which the lipids extractionTherefore, searching for an effective and economical extraction system is critical.Various approaches of lipids extraction are discussed in this review, including traditional extractionprocedures such as solvent extraction, pressing and solvent integrated extraction, as well as some new

Keywords： oleaginous microorganisms biodiesel solvent extraction ultrasound-assisted extraction microwave-assistedextraction supercritical fluid extraction (SFE)

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An extraction- assay system: Evaluation on flavonols in plant resistance to Pb and Cd by supercriticalextraction- gas chromatography

Xu Zhang, Huanhuan Yang, Xinlei Wang, Wen Song, Zhaojie Cui

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 4, doi: 10.1007/s11783-018-1059-2

Abstract:

SFE-GC system is established for flavonols assessment.

Optimal parameters of SFE-GC are evaluated and

Keywords： Flavonols Heavy metal Supercritical carbon dioxide extraction (SFE) GC Plant resistance

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Predicting the yield of pomegranate oil from supercritical extraction using artificial neural networks

J. Sargolzaei, A. Hedayati Moghaddam

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 3, Pages 357-365 doi: 10.1007/s11705-013-1336-3

Abstract: develop an effective intelligent system to predict the effects of temperature and pressure on an oil extractionPomegranate oil was extracted using a supercritical CO (SC-CO ) process.

Keywords： oil recovery artificial intelligence extraction neural networks supercritical extraction

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Supercritical carbon dioxide extraction of CLA-ethyl ester

Yingdi CHEN, Peng XU, Jian CHENG

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 1, Pages 102-106 doi: 10.1007/s11705-010-0536-3

Abstract: Supercritical carbon dioxide (SC-CO ) extraction of Conjugated linoleic acid (CLA) ethyl ester was investigatedThe experimental results indicated that the rate of extraction would rise with the increase of pressureMoreover, the extraction pressure had insignificant influence on the selectivity of CLA-ethyl ester in

Keywords： supercritical carbon dioxide extraction CLA-ethyl ester temperature gradient

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Preparation of ibuprofen/lipid composite microparticles by supercritical fluid technique

WANG Xia, CHEN Hui, GUO Yanni, SU Yuzhong, WANG Hongtao, LI Jun

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 4, Pages 361-367 doi: 10.1007/s11705-008-0066-4

Abstract: Using the CO- and N-assisted atomization processes, the production of ibuprofen/lipid composite microparticles is investigated, in which the lipid includes myristic acid and tripalmitin. The produced composite particles show similar morphology to that of the pure lipids obtained by the same process. In the case of the N-assisted process, the average size of composite particles is slightly larger than that of the pure lipid particles due to the difficulty of solidification when using N. In the case of the CO-assisted process, the average size of composite particles is slightly smaller than that of the pure myristic acid particles, but slightly larger than that of the pure tripalmitin particles. The dissolution study reveals that the drug release from the ibuprofen/myristic acid particles is enhanced in comparison with that of the unprocessed ibuprofen. For the particles produced by the N-assisted process, the X-ray diffraction (XRD) patterns clearly indicate the encapsulation of ibuprofen into myristic acid. The obtained ibuprofen/tripalmitin composite particles with 5% or 20% of ibuprofen (in mass) evidently show the controlled drug release: only about 20% of the drug is released in 500 min from the ibuprofen/tripalmitin composite particles consisting of 20% ibuprofen prepared by the CO-assisted process, and the same release is obtained from the ibuprofen/tripalmitin composite particles containing 5% ibuprofen prepared by the N-assisted process.

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Formation of coke in thermal cracking of jet fuel under supercritical conditions

ZHU Yuhong, YU Caixiang, LI Zimu, MI Zhentao, ZHANG Xiangwen

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 1, Pages 17-21 doi: 10.1007/s11705-008-0024-1

Abstract: experiments were carried out to study coke formation from thermal cracking of home-made jet fuel RP-3 under supercriticalMore than 90% of coke deposits are carried away by the supercritical fluid, which has strong capabilitiesof extraction for coke deposits and their precursors.

Keywords： dispersive spectroscopy different extraction calorimetry filamentous

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Recovery of rare and precious metals from urban mines—A review

Mengmeng Wang, Quanyin Tan, Joseph F. Chiang, Jinhui Li

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 5, doi: 10.1007/s11783-017-0963-1

Abstract: Urban mining is essential for continued natural resource extraction.pyrometallurgical, hydrometallurgical, and biometallurgical processing), and emerging (electrochemical, supercriticalfluid, mechanochemical, and ionic liquids processing) technologies.Newly developed technologies—electrochemical, supercritical fluid, ionic liquid, and mechanochemical—have

Keywords： Rare and precious metals (RPMs) Distribution characteristics Recycling technology Emerging technology Supercriticalfluid

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Calculation and analysis of sub/supercritical methanol preheating tube for continuous production of biodieselvia supercritical methanol transesterification

Wen CHEN, Weiyong YING, Cunwen WANG, Weiguo WANG, Yuanxin WU, Junfeng ZHANG,

Frontiers in Energy 2009, Volume 3, Issue 4, Pages 423-431 doi: 10.1007/s11708-009-0075-0

Abstract: Supercritical methanol transesterification for biodiesel has recently been concerned because of its obviousThe tubular reactor is an ideal reactor for continuous preparation of biodiesel via supercritical methanolmethanol preheating tube is necessary for the tubular reaction system because the reaction temperature for supercritical;600K, changes of the density, isobaric capacity, viscosity and thermal conductivity of sub/supercriticalthe basis of these thermophysical properties, an integration method is adopted for the design of sub/supercritical

Keywords： sub/supercritical methanol preheating tube integration method biodiesel

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Entity and relation extraction with rule-guided dictionary as domain knowledge

Frontiers of Engineering Management Pages 610-622 doi: 10.1007/s42524-022-0226-0

Abstract: Entity and relation extraction is an indispensable part of domain knowledge graph construction, whichThe existing entity and relation extraction methods that depend on pretrained models have shown promisingEntity extraction models treat characters as basic semantic units while ignoring known character dependencyRelation extraction is based on the hypothesis that the relations hidden in sentences are unified, therebyIn addition, the extraction accuracy of entity relation triplet reaches 83% and 76% on laser industry

Keywords： entity extraction relation extraction prior knowledge domain rule

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A review on catalytic & non-catalytic bio-oil upgrading in supercritical fluids

Sainab Omar, Yang Yang, Jiawei Wang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1, Pages 4-17 doi: 10.1007/s11705-020-1933-x

Abstract: summarizes the key published research on the topic of bio-oil upgrading using catalytic and non-catalytic supercriticalfluid (SCF) conditions.have opted for non-precious metal catalysts such as acidic HZSM-5 which can promote esterification in supercriticalSupercritical methanol, ethanol, and water are most commonly used and demonstrate catalyst like activities

Keywords： bio-oil upgrading supercritical review

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Polydimethylsiloxane assisted supercritical CO

Weixia Wang, Shuai Zhou, Zhong Xin, Yaoqi Shi, Shicheng Zhao

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 3, Pages 396-404 doi: 10.1007/s11705-016-1577-z

Abstract: The effect of PDMS viscosity on the foaming behavior of HMSPP was systematically investigated using supercritical

Keywords： high melt strength polypropylene (HMSPP) polydimethylsiloxane (PDMS) supercritical CO₂ foaming

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Corrosion mechanisms of candidate structural materials for supercritical water-cooled reactor

Lefu ZHANG, Fawen ZHU, Rui TANG

Frontiers in Energy 2009, Volume 3, Issue 2, Pages 233-240 doi: 10.1007/s11708-009-0024-y

Abstract: strengthened steel are presently considered to be the candidate structural or fuel-cladding materials for supercriticalthose candidate materials exhibits quite complicated mechanism in high-temperature and high-pressure supercritical

Keywords： supercritical water-cooled reactor general corrosion oxide film corrosion mechanism

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Development of a supercritical and an ultra-supercritical circulating fluidized bed boiler

Junfu LYU, Hairui YANG, Wen LING, Li NIE, Guangxi YUE, Ruixin LI, Ying CHEN, Shilong WANG

Frontiers in Energy 2019, Volume 13, Issue 1, Pages 114-119 doi: 10.1007/s11708-017-0512-4

Abstract: The supercritical circulating fluidized bed (CFB) boiler, which combines the advantages of CFB combustionwith low cost emission control and supercritical steam cycle with high efficiency of coal energy, isDifferent from the supercritical pulverized coal boiler that has been developed more than 50 years, thesupercritical CFB boiler is still a new one which requires further investigation.The design theory and key technology for supercritical CFB boiler were proposed.

Keywords： supercritical circulating fluidized bed boiler development demonstration

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Thermo-economic analysis of a direct supercritical CO electric power generation system using geothermal

Frontiers in Energy 2022, Volume 16, Issue 2, Pages 246-262 doi: 10.1007/s11708-021-0749-9

Abstract: A comprehensive thermo-economic model combining a geothermal heat mining system and a direct supercriticalSpecifically, in geothermal heat extraction simulation, an integrated wellbore-reservoir system model

Keywords： geothermal heat mining supercritical CO₂ power generation thermo-economic analysis optimization

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Production of renewable fuels by blending bio-oil with alcohols and upgrading under supercritical conditions

Sainab Omar, Suzanne Alsamaq, Yang Yang, Jiawei Wang

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4, Pages 702-717 doi: 10.1007/s11705-019-1861-9

Abstract: The work studied a non-catalytic upgrading of fast pyrolysis bio-oil by blending under supercriticalThe GCMS analysis indicated that the supercritical methanol reaction removed the acids in the bio-oilconsequently the pH increased from 2.39 in the crude bio-oil to 4.04 after the supercritical methanolThe ester contents increased by 87.49% after the supercritical methanol reaction indicating ester formationAfter the supercritical isopropanol reaction, the heating value of the liquid product slightly further

Keywords： bio-oil blending supercritical upgrading characterisation

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Title Author Date Type Operation

Technologies for extracting lipids from oleaginous microorganisms for biodiesel production

Cunwen WANG, Lu CHEN, Bajpai RAKESH, Yuanhang QIN, Renliang LV

Journal Article

An extraction- assay system: Evaluation on flavonols in plant resistance to Pb and Cd by supercriticalextraction- gas chromatography

Xu Zhang, Huanhuan Yang, Xinlei Wang, Wen Song, Zhaojie Cui

Journal Article

Predicting the yield of pomegranate oil from supercritical extraction using artificial neural networks

J. Sargolzaei, A. Hedayati Moghaddam

Journal Article

Supercritical carbon dioxide extraction of CLA-ethyl ester

Yingdi CHEN, Peng XU, Jian CHENG

Journal Article

Preparation of ibuprofen/lipid composite microparticles by supercritical fluid technique

WANG Xia, CHEN Hui, GUO Yanni, SU Yuzhong, WANG Hongtao, LI Jun

Journal Article

Formation of coke in thermal cracking of jet fuel under supercritical conditions

ZHU Yuhong, YU Caixiang, LI Zimu, MI Zhentao, ZHANG Xiangwen

Journal Article

Recovery of rare and precious metals from urban mines—A review

Mengmeng Wang, Quanyin Tan, Joseph F. Chiang, Jinhui Li

Journal Article

Calculation and analysis of sub/supercritical methanol preheating tube for continuous production of biodieselvia supercritical methanol transesterification

Wen CHEN, Weiyong YING, Cunwen WANG, Weiguo WANG, Yuanxin WU, Junfeng ZHANG,

Journal Article

Entity and relation extraction with rule-guided dictionary as domain knowledge

Journal Article

A review on catalytic & non-catalytic bio-oil upgrading in supercritical fluids

Sainab Omar, Yang Yang, Jiawei Wang

Journal Article

Polydimethylsiloxane assisted supercritical CO

Weixia Wang, Shuai Zhou, Zhong Xin, Yaoqi Shi, Shicheng Zhao

Journal Article

Corrosion mechanisms of candidate structural materials for supercritical water-cooled reactor

Lefu ZHANG, Fawen ZHU, Rui TANG