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Synthesis of magnetic carbonaceous acid derived from waste garlic peel for biodiesel production via esterification

Hewei YU, Jinke WU, Wei WEI, Xingyu ZHANG, Changzai REN, Yaoqi DONG, Shen CHENG

Frontiers in Energy 2023, Volume 17, Issue 1,   Pages 176-187 doi: 10.1007/s11708-022-0836-6

Abstract: Waste biomass-supported magnetic solid acids have particular advantages in catalyst separation.First, a novel magnetic carbonaceous catalyst was synthesized from waste garlic peel (GP) via in situBy optimizing the esterification conditions to produce biodiesel, an oleic acid conversion of 94.5% wascatalyst dosage) = 10% (w is mass fraction), a molar ratio of n(methanol): n(oleic acidFurther, for catalyst regeneration, it was found that sulfuric acid treatment was more effective for

Keywords： garlic peel (GP)     magnetic carbonaceous acid     esterification     biodiesel    

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Synergistic scale inhibition of polyaspartic acid composite with magnetic field

LIU Zhenfa, WANG Yanji, GAO Yuhua, ZHANG Lihui

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3,   Pages 261-265 doi: 10.1007/s11705-007-0047-z

Abstract: Polyaspartic acid (PASP) composite, a scale inhibitor, was prepared from PASP, itaconic acid–acrylicacid–acrylic ester (IA-AA-AE) terpolymer and 2-phosphonobutane- 1,2,4-tricarboxylic acid (PBTCA).The scale inhibition of PASP composite and the effect of its synergism with a magnetic field on scaleexperiments show that the chelating function of PASP composite for Ca can be enhanced by synergism with a magnetic650 mg/L, HCO 1,300 mg/L and PASP composite 4 mg/L, the scale inhibition rate of PASP composite in magnetic

Keywords： synergism     magnetic     PBTCA     dynamic     acid–acrylic acid–acrylic    

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A magnetic adsorbent based on salicylic acid-immobilized magnetite nano-particles for pre-concentration

Hossein Abdolmohammad-Zadeh, Arezu Salimi

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 450-459 doi: 10.1007/s11705-020-1930-0

Abstract: In this research, an eco-friendly magnetic adsorbent based on Fe O /salicylic acid nanocomposite wasThe nanocomposite was employed as a magnetic solid-phase extraction agent for separation of Cd(II) ionsFollowing elution with acetic acid (pH 3.5), the pre-concentrated analyte was quantified by flame atomic

Keywords： cadmium     magnetic solid-phase extraction     Fe3O4 nanoparticles     Fe3O4/salicylic acid nanocomposite     flame atomic absorption spectrometry    

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Magnetic KIT-6 nano-composite and its amino derivatives as convenient adsorbent for U(VI) sequestration

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2037-2049 doi: 10.1007/s11705-023-2358-0

Abstract: three-dimensional cubic structures since the highly acidic preparation conditions lead to dissolution of magneticHerein, we successfully prepared magnetic KIT-6 nano-composite and its amino derivatives by bearing acid-resistantendothermic nature and ionic strength independence, and the adsorbents can be easily regenerated by acidThe findings of this work further demonstrate the potential broad application prospects of magnetic hybrid

Keywords： magnetic nanoparticle     3D mesoporous silica     amino functionalization     adsorption of U(VI)     acid resistance    

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Effect of carbon deposition over carbonaceous catalysts on CH

Yongfa ZHANG, Meng ZHANG, Guojie ZHANG, Huirong ZHANG

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 481-485 doi: 10.1007/s11705-010-0523-8

Abstract: It was found that the carbonaceous catalyst is an efficient catalyst in methane decomposition and CH

Keywords： carbon deposition     carbonaceous catalyst     CH4-CO2 reforming    

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Reactivity of Pyrogenic Carbonaceous Matter (PCM) in mediating environmental reactions: Current knowledge

Wenqing Xu, Mark L. Segall, Zhao Li

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 5, doi: 10.1007/s11783-020-1265-6

Abstract: Abstract • Pyrogenic Carbonaceous Matter (PCM) promote both chemical and microbial synergies. • DiscussionPyrogenic Carbonaceous matter (PCM; e.g., black carbon, biochar, and activated carbon) are solid residuesMoreover, the knowledge gained in these studies could inform the design of a new generation of reactive carbonaceous

Keywords： pyrogenic carbonaceous matter     Conjugated microporous polymer     remediation     Biochar     Hydrolysis     Pollutant    

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The catalytic effect of both oxygen-bearing functional group and ash in carbonaceous catalyst on CH 4

Weidong ZHANG, Yongfa ZHANG,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 2,   Pages 147-152 doi: 10.1007/s11705-009-0242-1

Abstract: A kind of new catalyst—carbonaceous catalyst—for CH-CO reformation has been developed inIt has been found that the carbonaceous catalyst is an efficient catalyst on CO-CH reforming.With the decrease of oxygen-bearing functional group, the catalytic activity of carbonaceous catalyst; the ash components in carbonaceous catalyst also have an important influence on the CO-CH reformingCaO can catalyze the gasification between carbonaceous catalyst and CO; AlO and MgO inhibit the CO-CH

Keywords： oxygen-bearing functional     carboxyl     phenolic hydroxyl     CH-CO reformation     CO-CH reforming    

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Emission factors of gaseous carbonaceous species from residential combustion of coal and crop residue

Qin WANG, Chunmei GENG, Sihua LU, Wentai CHEN, Min SHAO

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 1,   Pages 66-76 doi: 10.1007/s11783-012-0428-5

Abstract: Experiments were performed to measure the emission factors ( s) of gaseous carbonaceous species, suchimproved stove design to allow higher combustion efficiency would be beneficial for reducing emissions of carbonaceous

Keywords： residential combustion     coal     crop residue briquette     emission factors     gaseous carbonaceous species    

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Modeling and analysis of magnetic dipoles in weak magnetic field

WANG Zhaoxia, ZHANG Weimin, LIU Hongguang

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 2,   Pages 222-225 doi: 10.1007/s11465-008-0028-z

Abstract: The magnetic leakage field distribution resulting from linear defects of a tube sample in the geomagneticfield is modeled according to the magnetic dipole theory.The formula to compute the normal component of the weak magnetic field is deduced based on the spatialdistribution of the magnetic dipole.The shape and characteristics of the zero line (an important criterion for magnetic memory testing) of

Keywords： geomagnetic     theory     important criterion     magnetic leakage     normal component    

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Interaction of carbonaceous nanomaterials with wastewater biomass

Yu YANG,Zhicheng YU,Takayuki NOSAKA,Kyle DOUDRICK,Kiril HRISTOVSKI,Pierre HERCKES,Paul WESTERHOFF

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5,   Pages 823-831 doi: 10.1007/s11783-015-0787-9

Abstract: Increasing production and use of carbonaceous nanomaterials (NMs) will increase their release to theThe data presented in this study for carbonaceous NM removal from wastewater provides quantitative information

Keywords： multi-walled carbon nanotubes     graphene oxide     graphene     removal     wastewater biomass    

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Application and mechanism of polysaccharide extracted from Enteromorpha to remove nano-ZnO and humic acid

Jianzhang Sun, Baoyu Gao, Yuanxia Luo, Moxi Xue, Xing Xu, Qinyan Yue, Yan Wang

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 3, doi: 10.1007/s11783-018-1029-8

Abstract: Enteromorpha polysaccharide (Ep) extracted from alga a novel green coagulant aid for nanoparticles (NPs) and heavy metal ions removal and the structure of EP was intensively studied in this study. The integration of Ep with polyaluminum chloride (PAC-Ep) coagulants exhibited higher coagulation performance than that of the polyaluminum chloride (PAC) because of the negatively charged NPs suspension and humic aid (HA) solution. Significant high removal efficiencies of dissolved organic matter (94.1%), turbidity (99.3%) and Zn ions (69.3%) were achieved by the PAC-Ep coagulants. The dual-coagulation properties of PAC-Ep for different pollutants was based on multiple mechanisms, including (i) Al charge neutralization; (ii) hydroxy aluminum hydroxyl bridging formed polynuclearhydroxy complexes bridge and sweep colloidal particles; (iii) adsorption and bridging of Ep chain for the NPs and heavy metal ions. Results indicated that the destabilization of colloid was induced by the coexisting HA and higher removal was achieved as ions adsorption was enhance in the presence of HA complexation. On the basis of that, the extraction of polysaccharide is a promising candidate for its high coagulation performance in water treatment.

Keywords： Algal Extraction     Enteromorpha polysaccharide     1H-13C nuclear magnetic resonance    

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Continuous size fractionation of magnetic nanoparticles by using simulated moving bed chromatography

Carsten-Rene Arlt, Dominik Brekel, Stefan Neumann, David Rafaja, Matthias Franzreb

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 5,   Pages 1346-1355 doi: 10.1007/s11705-021-2040-3

Abstract: The size fractionation of magnetic nanoparticles is a technical problem, which until today can only beUsing magnetic chromatography, we show a promising method for fractionation of magnetic nanoparticleswith respect to their size and/or magnetic properties.This was achieved by passing magnetic nanoparticles through a packed bed of fine steel spheres with whichThe continuous feed stream of magnetic nanoparticles could be fractionated with a space-time-yield of

Keywords： magnetic chromatography     simulated moving bed chromatography     magnetic nanoparticles     size fractionation    

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Magnetostriction varieties and stress relief caused by pulsed magnetic field

Zhipeng CAI, Xinjie DUAN, Jian LIN, Haiyan ZHAO

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 354-358 doi: 10.1007/s11465-011-0123-4

Abstract:

Magnetostriction is investigated to evaluate the stress relief caused by pulsed magnetic field treatmentThe stress variations caused by pulsed magnetic treatment are also compared.find that the product of magnetostriction amplitude and stress magnitude is nearly a constant during magnetic

Keywords： magnetostriction     pulsed magnetic field treatment     stress relief    

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Rare-earth separation based on the differences of ionic magnetic moment via quasi-liquid strategy

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1584-1594 doi: 10.1007/s11705-022-2189-4

Abstract: The differences of the ionic magnetic moment among rare earths are greater than that of ionic radius.Herein, a novel method based on the large ionic magnetic moment differences of rare earth elements wasionic liquid, then the ordering degree of them was improved with the Z-bond effect, and finally the magneticEr/Ho as examples, the results showed that Er(III) and Ho(III) containing ionic liquids had obvious magneticMagnetic separation via quasi-liquid system strategy provides a possibility of the novel, green, and

Keywords： rare earth element     different magnetic moment     magnetic separation     ionic liquid    

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A new miniaturized engine based on thermomagnetic effect of magnetic fluids

Lujun ZHOU, Yimin XUAN, Qiang LI, Wenlei LIAN

Frontiers in Energy 2009, Volume 3, Issue 2,   Pages 160-166 doi: 10.1007/s11708-009-0018-9

Abstract: A new engine system, essentially consisting of a permanent NdFeB magnet, a kerosene-based magnetic fluidand a rotor, is proposed based on the thermomagnetic effect of a temperature-sensitive magnetic fluidThe rotor was driven by the thermal convection of the magnetic fluid in the presence of a homogeneousexternal magnetic field.The performance of the motor is considerably influenced by the magnetic field imposed.

Keywords： magnetic fluid     thermomagnetic effect     engine    

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Title Author Date Type Operation

Synthesis of magnetic carbonaceous acid derived from waste garlic peel for biodiesel production via esterification

Hewei YU, Jinke WU, Wei WEI, Xingyu ZHANG, Changzai REN, Yaoqi DONG, Shen CHENG

Journal Article

Synergistic scale inhibition of polyaspartic acid composite with magnetic field

LIU Zhenfa, WANG Yanji, GAO Yuhua, ZHANG Lihui

Journal Article

A magnetic adsorbent based on salicylic acid-immobilized magnetite nano-particles for pre-concentration

Hossein Abdolmohammad-Zadeh, Arezu Salimi

Journal Article

Magnetic KIT-6 nano-composite and its amino derivatives as convenient adsorbent for U(VI) sequestration

Journal Article

Effect of carbon deposition over carbonaceous catalysts on CH

Yongfa ZHANG, Meng ZHANG, Guojie ZHANG, Huirong ZHANG

Journal Article

Reactivity of Pyrogenic Carbonaceous Matter (PCM) in mediating environmental reactions: Current knowledge

Wenqing Xu, Mark L. Segall, Zhao Li

Journal Article

The catalytic effect of both oxygen-bearing functional group and ash in carbonaceous catalyst on CH 4

Weidong ZHANG, Yongfa ZHANG,

Journal Article

Emission factors of gaseous carbonaceous species from residential combustion of coal and crop residue

Qin WANG, Chunmei GENG, Sihua LU, Wentai CHEN, Min SHAO

Journal Article

Modeling and analysis of magnetic dipoles in weak magnetic field

WANG Zhaoxia, ZHANG Weimin, LIU Hongguang

Journal Article

Interaction of carbonaceous nanomaterials with wastewater biomass

Yu YANG,Zhicheng YU,Takayuki NOSAKA,Kyle DOUDRICK,Kiril HRISTOVSKI,Pierre HERCKES,Paul WESTERHOFF

Journal Article

Application and mechanism of polysaccharide extracted from Enteromorpha to remove nano-ZnO and humic acid

Jianzhang Sun, Baoyu Gao, Yuanxia Luo, Moxi Xue, Xing Xu, Qinyan Yue, Yan Wang

Journal Article

Continuous size fractionation of magnetic nanoparticles by using simulated moving bed chromatography

Carsten-Rene Arlt, Dominik Brekel, Stefan Neumann, David Rafaja, Matthias Franzreb

Journal Article

Magnetostriction varieties and stress relief caused by pulsed magnetic field

Zhipeng CAI, Xinjie DUAN, Jian LIN, Haiyan ZHAO

Journal Article

Rare-earth separation based on the differences of ionic magnetic moment via quasi-liquid strategy

Journal Article

A new miniaturized engine based on thermomagnetic effect of magnetic fluids

Lujun ZHOU, Yimin XUAN, Qiang LI, Wenlei LIAN

Journal Article