Assessment on the Synthesis and Performance of Low-Cost Chitosan-Coated Natural Zeolite Adsorbent for Post-Combustion Carbon Dioxide Capture

2018 ◽  
Vol 775 ◽  
pp. 383-389
Author(s):  
Dominique Jan Bacalso Tan ◽  
Bryan B. Pajarito
Keyword(s):  
Carbon Dioxide ◽  
Natural Zeolite ◽  
Carbon Dioxide Capture ◽  
Low Cost ◽  
Gravimetric Analysis ◽  
Scanning Calorimetry ◽  
Zeolite Adsorbent ◽  
And Performance ◽  
Adsorption Desorption ◽  
Good Retention

An adsorbent for post-combustion carbon dioxide capture was prepared using low-cost and sustainable natural zeolite coated with chitosan. An optimum adsorbent was identified from 3 levels of particle size of natural zeolite and 10 levels of chitosan loading. The optimum adsorbent was characterized using infrared spectroscopy, scanning electron microscopy, thermal gravimetric analysis and differential scanning calorimetry. The chemical and thermal properties of the adsorbent indicated successful coating of chitosan on natural zeolite. The adsorbent registered competitive dynamic adsorption capacity of 0.81 mmol g-1 with good retention, at least, up to 5 adsorption-desorption cycles.

Effect of Particle Size and Chitosan Loading on Post-Combustion Carbon Dioxide Capture of Chitosan-Coated Natural Zeolite Adsorbent

2018 ◽  
Vol 917 ◽  
pp. 185-189 ◽  
Author(s):  
Dominique Jan Bacalso Tan ◽  
Bryan B. Pajarito
Keyword(s):  
Carbon Dioxide ◽  
Particle Size ◽  
Natural Zeolite ◽  
Carbon Dioxide Capture ◽  
Average Particle Size ◽  
Average Particle ◽  
Gravimetric Analysis ◽  
Breakthrough Time ◽  
Effect Of Particle Size ◽  
Zeolite Adsorbent

This study investigated the effect of particle size and chitosan loading on the performance of chitosan-coated natural zeolite adsorbent in post-combustion carbon dioxide capture. The adsorbents were prepared in 3 levels of average particle size (0.75 mm, 1.5 mm and 2 mm) of natural zeolite and 4 levels of chitosan loading (0, 15, 30 and 45 wt% of natural zeolite) using a simple coating procedure. The adsorbents were characterized using infrared spectroscopy, scanning electron microscopy, thermal gravimetric analysis, and differential scanning calorimetry. The capture performance of the adsorbent was measured in terms of breakthrough time. The change in chemical properties, surface morphology and thermal characteristics of natural zeolite confirms the successful coating of chitosan. The mean breakthrough time increases with decreasing particle size and increasing chitosan loading up to 15 wt% of natural zeolite.

Cost and Performance of PC and IGCC Plants for a Range of Carbon Dioxide Capture

2011 ◽  
Author(s):  
Kristin Gerdes ◽  
James B. Black ◽  
John l. Haslbeck ◽  
Andrew P. Jones ◽  
Wayne L. Lundberg ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Capture ◽  
And Performance

Characterization of a Polymeric Membrane for the Separation of Hydrogen in a Mixture with CO2

2016 ◽  
Vol 9 (1) ◽  
pp. 126-136 ◽  
Author(s):  
Dionisio H. Malagón-Romero ◽  
Alexander Ladino ◽  
Nataly Ortiz ◽  
Liliana P. Green
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Production ◽  
Test Performance ◽  
Low Cost ◽  
Time Lag ◽  
Polymeric Membrane ◽  
Biological Processes ◽  
Scanning Calorimetry ◽  
Environmentally Sustainable ◽  
Production Of Hydrogen

Hydrogen is expected to play an important role as a clean, reliable and renewable energy source. A key challenge is the production of hydrogen in an economically and environmentally sustainable way on an industrial scale. One promising method of hydrogen production is via biological processes using agricultural resources, where the hydrogen is found to be mixed with other gases, such as carbon dioxide. Thus, to separate hydrogen from the mixture, it is challenging to implement and evaluate a simple, low cost, reliable and efficient separation process. So, the aim of this work was to develop a polymeric membrane for hydrogen separation. The developed membranes were made of polysulfone via phase inversion by a controlled evaporation method with 5 wt % and 10 wt % of polysulfone resulting in thicknesses of 132 and 239 micrometers, respectively. Membrane characterization was performed using scanning electron microscopy (SEM), differential scanning calorimetry (DSC), atomic force microscopy (AFM), and ASTM D882 tensile test. Performance was characterized using a 23 factorial experiment using the time lag method, comparing the results with those from gas chromatography (GC). As a result, developed membranes exhibited dense microstructures, low values of RMS roughness, and glass transition temperatures of approximately 191.75 °C and 190.43 °C for the 5 wt % and 10 wt % membranes, respectively. Performance results for the given membranes showed a hydrogen selectivity of 8.20 for an evaluated gas mixture 54% hydrogen and 46% carbon dioxide. According to selectivity achieved, H2 separation from carbon dioxide is feasible with possibilities of scalability. These results are important for consolidating hydrogen production from biological processes.

scholarly journals Effect of Pristine Palygorskite Powders on Explosion Characteristics of Methane-Air Premixed Gas

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2496 ◽  
Author(s):  
Yimin Zhang ◽  
Yan Wang ◽  
Ligang Zheng ◽  
Tao Yang ◽  
Jianliang Gao ◽  
...  
Keyword(s):  
Flame Propagation ◽  
Low Cost ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Flame Propagation Velocity ◽  
Explosion Pressure ◽  
Pyrolysis Characteristics ◽  
Explosion Suppression ◽  
Adsorption Desorption ◽  
Methane Explosion

In this study, pristine palygorskite powders were used as the inhibition materials to suppress the explosion of methane-air premixed gas for the first time. The composition, porosity and pyrolysis characteristics of the powders were tested by X-ray diffraction (XRD), energy dispersive spectrometry (EDS), N2 adsorption-desorption and Thermogravimetry-differential scanning calorimetry (TG-DSC) techniques. The effects of pristine palygorskite powders concentration on the explosion pressure and the average velocity of flame propagation of the 9.5% methane-air premixed gas were tested by a 20 L spherical explosion system and a 5 L pipeline explosion system. The results indicated the pristine palygorskite powders possess a considerable suppression property on methane explosion. When the mass concentration of pristine palygorskite powders was 0.20 g·L−1, the max-pressure of methane explosion was decreased by 23.9%. The methane explosion flame propagation velocity was inhibited obviously. Owing to the excellent inhibitory performance and the advantage of low-cost and environmental harmlessness, pristine palygorskite powders are potential new materials for the application on gas explosion suppression.

Novel phthalonitrile-based composites with excellent processing, thermal, and mechanical properties

2017 ◽  
Vol 30 (6) ◽  
pp. 720-730 ◽  
Author(s):  
Zuoqiang Wu ◽  
Shijie Wang ◽  
Lishuai Zong ◽  
Nan Li ◽  
Jinyan Wang ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Bending Strength ◽  
Low Cost ◽  
Nitrogen Atmosphere ◽  
Gravimetric Analysis ◽  
Fiber Reinforced ◽  
Aryl Ether ◽  
Scanning Calorimetry ◽  
Aerospace Applications ◽  
Interlaminar Shear

Phthalonitrile resins exhibit excellent thermostability and mechanical strength after curing. However, poor processability made them difficult to fabricate fiber-reinforced composites with desirable integrated performance. In this article, a novel mixed phthalonitrile resin was developed to be used as the matrix for glass fiber–reinforced laminates. Poly (aryl ether nitrile phthalazinone) oligomer end-capped by phthalonitrile units (PPEN-PN) was firstly designed and blended with bisphenol-based phthalonitrile monomers (BP-PN) (Figure 1), which were obtained according to the literature procedure. A novel mixed curing agent (zinc chloride and 4,4-diamine-diphenylsulfone) was also exploited to accelerate curing rate of the resins. Solubility tests, differential scanning calorimetry and rheological studies revealed that the mixed resins exhibited good processability with low processing viscosity. Thermal gravimetric analysis indicated that the cured resins were stable below 530 to approximately 570 °C in nitrogen atmosphere after low-cost curing procedure. In air, char yields of the resins were between 30 to approximately 40% when heated to 800 °C. The laminates reinforced by E-glass fiber cloth possessed a bending strength of 668 MPa with interlaminar shear strength of 84.6 MPa at room temperature. 50% of the strength and modulus was maintained when heated to 400 °C. Consequently, this type of laminates may be potential candidates for aerospace applications.

scholarly journals Pilot-Scale Silicone Process for Low-Cost Carbon Dioxide Capture. Final Scientific/Technical Report

2017 ◽  
Author(s):  
Dan Hancu ◽  
◽  
Benjamin Wood ◽  
Sarah Genovese ◽  
Tiffany Westendorf ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Capture ◽  
Low Cost ◽  
Pilot Scale ◽  
Technical Report ◽  
Scientific Technical

Mechanical, morphological, flamability and thermal properties of artificial wood plastic

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Emad S. Shafik ◽  
Medhat L. Tawfic ◽  
Adel F. Younan
Keyword(s):  
Maleic Anhydride ◽  
Flame Retardant ◽  
Coupling Agent ◽  
Low Cost ◽  
Gravimetric Analysis ◽  
Scanning Calorimetry ◽  
Content Type ◽  
Wide Range ◽  
Efficient Coupling ◽  
Analytical Tools

Purpose The purpose of this study is to manufacture composites from sawdust and polymer high-density polyethylene (HDPE) with different loading from alum as natural and cheap flame retardant and subsequently characterized using standard analytical tools. Design/methodology/approach Artificial wood plastic composites (WPCs) were prepared by mixing HDPE with sawdust as a filler with constant ratio (2:1) using hot press. Polyethylene-graft-maleic anhydride (PE-g-MAH) used as a coupling agent between two parents of the composites with different ratios (2.5, 5, 7 and 10). Alum as a flame retardant was incorporated into HDPE with 5 phr polyethylene grafted with maleic anhydride (PE-g-MAH) with different ratios (10, 15 and 20). Flame retardant efficiency was investigated using differential scanning calorimetry, thermal gravimetric analysis and the technique of ASTM E162. Findings The results revealed that the composite containing 5 phr from (PE-g-MAH) exhibited higher mechanical properties and this proved that (PE-g-MAH) act as an efficient coupling agent using the aforementioned ratio. The results also revealed that incorporation of alum as a flame retardant increased the thermal stability of the composites. Originality/value Artificial WPCs are ecofriendly materials with a wide range of applications in the constructions field. Moreover, they have high mechanical and physical properties with low cost. Evaluate alum as a natural and cheap flame retardant.

Cost and Performance of PC and IGCC Plants for a Range of Carbon Dioxide Capture - Rev. 1

2013 ◽  
Author(s):  
Kristin Gerdes ◽  
James Black ◽  
John Haslback ◽  
Andrew P. Jones ◽  
Wayne L. Lundberg ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Capture ◽  
And Performance
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