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Chitosan/polyethylene glycol impregnated activated carbons: Synthesis, characterization and adsorption performance

Ehsan Salehi, Fereshteh Soroush, Maryam Momeni, Aboulfazl Barati, Ali Khakpour

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4,   Pages 575-585 doi: 10.1007/s11705-017-1650-2

Abstract: Novel modified activated carbons (ACs) with enhanced adsorptive properties were obtained coating by chitosan (CS), polyethylene glycol (PEG) and blends of the two polymers (0:1, 1:0, 1:1, 1:2 and 2:1 wt/wt) on ACs by an impregnation technique. The adsorption performances of the pristine, acidified and polymer-impregnated ACs were studied using methylene blue as a model adsorbate. The adsorbents were characterized using Fourier transform infrared spectroscopy, scanning electron microscopy and abrasion hardness tests. The average coating thicknesses were between 10 to 23 microns. The pore sizes, pore densities and pore capacities of the activated carbons increased as the wt-% PEG in the coating increased. The highest adsorption capacity (424.7 mg/g) was obtained for the chitosan-coated ACs and this adsorption was well described by the Langmuir isotherm model. The kinetic results were best described by the pseudo-second-order kinetic model. The highest rate constant was obtained with the ACs modified with the CS:PEG (2:1) coating and this result was almost 2.6 times greater than that of the unmodified ACs. The CS/PEG impregnated ACs also displayed superior hardness (~90%), compared to unmodified ACs (~85%). Overall the chitosan had a greater effect on improving adsorption capacity whereas the polyethylene glycol enhanced the adsorption rate.

Keywords： carbon biocomposites     impregnation     chitosan     polyethylene glycol     image processing    

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Construction of interfacial dynamic bonds for high performance lignin/polymer biocomposites

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1372-1388 doi: 10.1007/s11705-023-2302-3

Abstract: The development of lignin/polymer biocomposites can promote the high value utilization of lignin andAs such, it is extremely difficult to prepare high performance lignin/polymer biocomposites.summarized the recent research progress of our group toward building high-performance lignin/polymer biocomposites

Keywords： lignin     polymer     interfacial dynamic bonds    

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Enzyme@bismuth-ellagic acid: a versatile platform for enzyme immobilization with enhanced acid-base stability

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 6,   Pages 784-794 doi: 10.1007/s11705-022-2278-4

Abstract: In situ encapsulation is an effective way to synthesize enzyme@metal–organic framework biocatalysts; however, it is limited by the conditions of metal–organic framework synthesis and its acid-base stability. Herein, a biocatalytic platform with improved acid-base stability was constructed via a one-pot method using bismuth-ellagic acid as the carrier. Bismuth-ellagic acid is a green phenol-based metal–organic framework whose organic precursor is extracted from natural plants. After encapsulation, the stability, especially the acid-base stability, of amyloglucosidases@bismuth-ellagic acid was enhanced, which remained stable over a wide pH range (2–12) and achieved multiple recycling. By selecting a suitable buffer, bismuth-ellagic acid can encapsulate different types of enzymes and enable interactions between the encapsulated enzymes and cofactors, as well as between multiple enzymes. The green precursor, simple and convenient preparation process provided a versatile strategy for enzymes encapsulation.

Keywords： bismuth-ellagic acid     in situ encapsulation     enzyme@MOF biocomposites    

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AGRICULTURAL GREEN DEVELOPMENT TO ACHIEVE FOOD SECURITY AND CARBON REDUCTION IN THE CONTEXT OF CHINA’S DUAL CARBON GOALS

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 2,   Pages 262-267 doi: 10.15302/J-FASE-2023496

Abstract:

● To achieve food security, Chinese agriculture– food system could not achieve C neutrality.

Keywords： agriculture     carbon neutrality     carbon peak     food security     carbon mitigation strategies    

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Research on low carbon management using a scientific classification method

Shanna QI, Meiting JU, Meng DUAN, Wei XING

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 4,   Pages 524-530 doi: 10.1007/s11783-011-0333-3

Abstract: This research is aimed at the rapid development of a low-carbon economy, in which we propose the classificationmanagement measures to affect the development of environmental management ideas and measures of the low-carboneconomy, which we called as low carbon management measures.According to scientific analysis of the low-carbon economy, we can divide low-carbon management measuresinto three parts: measures for reduction of carbon sources, carbon flow planning, and increase of carbon

Keywords： low-carbon economy     low carbon management     carbon source     carbon flow     carbon sink    

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Thoughts on strategies and paths to achieve carbon peaking and carbon neutrality in China

Frontiers in Energy 2023, Volume 17, Issue 3,   Pages 324-331 doi: 10.1007/s11708-023-0883-7

Abstract: peaking and carbon neutrality.”Next, eight major implementation paths for achieving the goals of “carbon peaking and carbon neutralityachieve carbon peaking and carbon neutrality in the transportation sector; focusing on breaking throughproviding a strong technical support for carbon removal to achieve carbon neutrality; accelerating theAfterwards, it is particularly pointed out that the realization of the goals of “carbon peaking and carbon

Keywords： carbon peaking and carbon neutrality     strategy     implementation path     important sci-tech innovation implementation    

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HIGHLIGHTS OF THE SPECIAL ISSUE “CARBON NEUTRALITY AND A LOW CARBON ECONOMY FOR AGRICULTURE”

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 2,   Pages 153-154 doi: 10.15302/J-FASE-2023497

Abstract: HIGHLIGHTS OF THE SPECIAL ISSUE “CARBON NEUTRALITY AND A LOW CARBON ECONOMY FOR AGRICULTURE”

Keywords： CARBON     ISSUE     NEUTRALITY     HIGHLIGHTS     AGRICULTURE    

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LIVESTOCK AND POULTRY MANURE MANAGEMENT FROM THE PERSPECTIVE OF CARBON NEUTRALITY IN CHINA

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 3,   Pages 341-362 doi: 10.15302/J-FASE-2023509

Abstract:

● Carbon reduction potential of manure treatment technologies was summarized

Keywords： valorization of animal manure     manure management     carbon emission     carbon footprint     methodology     carbon    

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Correlation between carbon emissions and energy structure –Reliability analysis of low carbon target

Ben HUA

Frontiers in Energy 2011, Volume 5, Issue 2,   Pages 214-220 doi: 10.1007/s11708-010-0133-7

Abstract: The influence of energy intensity on carbon intensity depends upon the fraction of energy mixes withhigh carbon emissions in the total energy mixes .Taking the long-term carbon reduction target in 2050 settled upon by the Copenhagen Agreement and theThe peak value of energy consumption will lag behind the peak value of carbon emissions; the world energy

Keywords： correlation     carbon emissions     energy consumption     high carbon emissions energy mix     target of emission reduction    

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A global carbon market?

Michael G. POLLITT

Frontiers of Engineering Management 2019, Volume 6, Issue 1,   Pages 5-18 doi: 10.1007/s42524-019-0011-x

Abstract:

This paper explores the prospects for a global carbon market as the centerpiece of any serious attemptWe begin by discussing what we might mean by a global carbon market and its theoretical properties.to discuss the EU Emissions Trading System experience and the recent experience with the Australian carbonNext, we assess recent carbon market initiatives in the US and in China.

Keywords： carbon market     carbon tax     EU ETS    

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Insights into carbon-based materials for catalytic dehydrogenation of low-carbon alkanes and ethylbenzene

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1623-1648 doi: 10.1007/s11705-023-2328-6

Abstract: Compared with metal-based catalysts, carbon materials with stable structure, rich pore texture and largeincluding ordered mesoporous carbon, carbon nanodiamond, carbon nanotubes, graphene and activated carbonA general introduction to the dehydrogenation mechanism and active sites of carbon catalysts is brieflyThe unique structure of each carbon material is presented, and the diversified synthesis methods of carbonThe regeneration mechanism of carbon-based catalysts is discussed for providing guidance on catalytic

Keywords： carbon materials     dehydrogenation     active sites     mechanism     catalytic performance     support    

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VALORIZATION OF LIVESTOCK WASTE AND CARBON NEUTRALITY

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 3,   Pages 333-340 doi: 10.15302/J-FASE-2023513

Abstract: VALORIZATION OF LIVESTOCK WASTE AND CARBON NEUTRALITY

Keywords： WASTE     CARBON     VALORIZATION     NEUTRALITY    

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Hierarchically porous zeolites synthesized with carbon materials as templates

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 6,   Pages 1444-1461 doi: 10.1007/s11705-021-2090-6

Abstract: From both industrial and scientific perspectives, different carbon materials have been widely employedDirect templates methods, by which the carbon materials are directly mixed with precursors gel as hardThen, we discuss the indirect templates method (crystallization of carbon-silica composites), by whichthe carbon is produced by in situ pyrolysis of organic-inorganic precursors.In the conclusion part, the factors affecting the synthesis of carbon-templated hierarchically porous

Keywords： hierarchical zeolites     carbon materials     direct templates     indirect templates     carbon-silica composites    

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SOIL CARBON CHECK: A TOOL FOR MONITORING AND GUIDING SOIL CARBON SEQUESTRATION IN FARMER FIELDS

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 2,   Pages 248-261 doi: 10.15302/J-FASE-2023499

Abstract:

● Establishment of a rapid tool for monitoring soil carbon sequestration

Keywords： 4 per 1000 initiative     carbon sequestration     climate action     farmer fields     SDG13     soil organic carbon    

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SOIL ORGANIC CARBON SEQUESTRATION MATTERS BUT IS NO PANACEA FOR CARBON-NEUTRAL AGRICULTURE

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 2,   Pages 281-284 doi: 10.15302/J-FASE-2022470

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Title Author Date Type Operation

Chitosan/polyethylene glycol impregnated activated carbons: Synthesis, characterization and adsorption performance

Ehsan Salehi, Fereshteh Soroush, Maryam Momeni, Aboulfazl Barati, Ali Khakpour

Journal Article

Construction of interfacial dynamic bonds for high performance lignin/polymer biocomposites

Journal Article

Enzyme@bismuth-ellagic acid: a versatile platform for enzyme immobilization with enhanced acid-base stability

Journal Article

AGRICULTURAL GREEN DEVELOPMENT TO ACHIEVE FOOD SECURITY AND CARBON REDUCTION IN THE CONTEXT OF CHINA’S DUAL CARBON GOALS

Journal Article

Research on low carbon management using a scientific classification method

Shanna QI, Meiting JU, Meng DUAN, Wei XING

Journal Article

Thoughts on strategies and paths to achieve carbon peaking and carbon neutrality in China

Journal Article

HIGHLIGHTS OF THE SPECIAL ISSUE “CARBON NEUTRALITY AND A LOW CARBON ECONOMY FOR AGRICULTURE”

Journal Article

LIVESTOCK AND POULTRY MANURE MANAGEMENT FROM THE PERSPECTIVE OF CARBON NEUTRALITY IN CHINA

Journal Article

Correlation between carbon emissions and energy structure –Reliability analysis of low carbon target

Ben HUA

Journal Article

A global carbon market?

Michael G. POLLITT

Journal Article

Insights into carbon-based materials for catalytic dehydrogenation of low-carbon alkanes and ethylbenzene

Journal Article

VALORIZATION OF LIVESTOCK WASTE AND CARBON NEUTRALITY

Journal Article

Hierarchically porous zeolites synthesized with carbon materials as templates

Journal Article

SOIL CARBON CHECK: A TOOL FOR MONITORING AND GUIDING SOIL CARBON SEQUESTRATION IN FARMER FIELDS

Journal Article

SOIL ORGANIC CARBON SEQUESTRATION MATTERS BUT IS NO PANACEA FOR CARBON-NEUTRAL AGRICULTURE

Journal Article