Influence of Pore Size and Surface Functionality of Activated Carbons on Adsorption Behaviors of Indole and Amylase

Miyawaki, Jin; Yeh, Joonyoung; Kil, Hyun-Sig; Lee, Jihn Koo; Nakabayashi, Koji; Mochida, Isao; Yoon, Seong Ho

doi:10.5109/1800868

Cited by 13 publications

(12 citation statements)

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“…The differences might be resulted in the adsorption of other pollutants, such as NOx, N2, C , H2, and H2O 25,26) . Adsorption of pollutants into activated carbon depends on the activated carbon pore size and surface properties 27,28) . The weight of membrane sheets were measured prior and after adsorption test, and there were increasing of membrane sheet mass of 0.27 gr, 0.16 gr and 0.30 gr for CA:nAC (4:1), CA:nAC (4:3) and CA:nAC (4:5), respectively.…”

Section: Membrane Adsorber For Emmision Pollutantsmentioning

confidence: 99%

Activated Carbon Loaded Mixed Matrix Membranes Extracted from Oil Palm Empty Fruit Bunches for Vehicle Exhaust Gas Adsorbers

Wibisono¹,

Amanah²,

Sukoyo³

et al. 2021

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Mixed matrix membranes (MMM's) comprising cellulose acetate (CA) polymers with nano-activated carbon (nAC) were prepared and derived from Oil Palm Empty Fruit Bunches (OP-EFB) biowaste. At first, nAC's were prepared using carbonization-activation process, with pyrolysis temperatures applied at 300, 400, and 500°C, respectively. Furthermore, 100 kg/m 3 ZnCl2 solution were added for the activation process before sonicated at 28 kHz for 45 minutes. The adsorption performances were tested by using iodine value. The nAC prepared under carbonization temperature of 500°C, showed the best properties, i.e. 3.67% water content, 7.68% ash content, 22.87% volatile substances, 69.45% pure activated carbon levels and iodine value of 1000.35 mg/g, therefore selected and embedded into polymeric membrane matrices. In order to produce membranes matrix, cellulose was extracted from OP-EFB by 5-steps processes, i.e. preparation, hydrolysis, delignification, pulping and bleaching to obtaine α-cellulose. The extracted α-cellulose then activated, acetelized, hydrolyzed, sedimented and dryed to produce cellulose acetatate (CA) polymers. Then, the CA matrixes filled with different ratios of CA:nAC, i.e. (4:1), (4:3), (4:5), to prepare mixed matrix membranes. The MMM's were then tested to adsorp CO, CO2 and hydrocarbons produced by motorcycle combustion process. The highest pollutant removal was 16.12% and 11.77%, for CO and CO2, respectively, while the highest HC removal was 15.23%. The biowaste-based MMM's were proven to decrease motorcycle exhaust gases from the testing chamber, comply with SNI (Indonesian National Standard) and contributed to environmental recovery.

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Section: Membrane Adsorber For Emmision Pollutantsmentioning

confidence: 99%

Activated Carbon Loaded Mixed Matrix Membranes Extracted from Oil Palm Empty Fruit Bunches for Vehicle Exhaust Gas Adsorbers

Wibisono¹,

Amanah²,

Sukoyo³

et al. 2021

Evergreen

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“…In addition, the table shows that Chromium-Succinate has a fairly good surface area of another reported Bio-MOF. It is expected that with a good surface area potential, it can adsorb more CO2 molecules 30) .…”

Section: Surface Area and Porositymentioning

confidence: 99%

Design and Preparation of Succinic Acid-Based Metal-Organic Frameworks for CO_2 Adsorption Technology

Yulia¹,

Marsya²,

Bobby³

et al. 2020

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“…Porous micro-bead is considered to be a useful invention that has gained the attention of researchers recently. Due to the presence of pores in the structure, porous micro-bead offers large surface area 1) , lightweight 2) , excellent thermal properties 3) and enhanced absorption behavior 4) . As a result, porous micro-bead has been widely used in many applications including electronics 5) , biomedical 6) , cosmetics 7) , and automotive 8) .…”

Section: Introductionmentioning

confidence: 99%

Formation of Porous Epoxy Micro-beads from a Single Droplet of Epoxy-Polyamide-Ammonium Bicarbonate at Different Temperatures

Leemsuthep¹,

Zakaria²,

Tanrattanakul³

et al. 2021

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Process temperature greatly affects the decomposition behavior of a blowing agent, and changes the structure of the porous epoxy. This paper investigates the effect of processing temperature on the decomposition rate and volume of decomposing gases from ammonium bicarbonate as well as the properties of porous epoxy micro-bead through a single epoxy droplet. A single epoxy droplet (epoxy-polyamide-ammonium bicarbonate) was dropped into the corn oil heated at the temperatures of 80°C, 90°C and 100°C. This study found that by controlling the processing temperature, an epoxy foam bulk (80°C) or a number of porous epoxy micro-beads were fabricated (90°C and 100°C). Higher total volume of gas was generated which was 1142.86 cm 3 /g at 100°C, with lower viscosity of epoxy. Therefore, the initial epoxy droplet of 10:6 ratio burst into smaller micro-beads with dominant sizes in the range of 251-500 μm and porosity of 30%. From the perspective of epoxy polyamide ratios, the 10:10 ratio has porous epoxy micro-beads slightly larger than that of 10:6 ratio. This induced a decrease in porosity and an increase in specific gravity of micro-beads of 10:10 ratio.

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Influence of Pore Size and Surface Functionality of Activated Carbons on Adsorption Behaviors of Indole and Amylase

Cited by 13 publications

References 0 publications

Activated Carbon Loaded Mixed Matrix Membranes Extracted from Oil Palm Empty Fruit Bunches for Vehicle Exhaust Gas Adsorbers

Activated Carbon Loaded Mixed Matrix Membranes Extracted from Oil Palm Empty Fruit Bunches for Vehicle Exhaust Gas Adsorbers

Design and Preparation of Succinic Acid-Based Metal-Organic Frameworks for CO_2 Adsorption Technology

Formation of Porous Epoxy Micro-beads from a Single Droplet of Epoxy-Polyamide-Ammonium Bicarbonate at Different Temperatures

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