Overview of Adsorption Cooling System based on Activated Carbon : Alcohol Pair

Jerai, Fauziah; Miyazaki, Takahiko; Saha, Bidyut Baran; Koyama, Shigeru

doi:10.5109/1500425

Cited by 11 publications

(13 citation statements)

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“…ACF/ethanol showed the highest adsorption uptake followed by AC-methanol and silica gel-water pairs. Silica gel-water showed the highest COP value of 0.5 when the regeneration temperature was below 70 °C; however, the COP of the ACF-ethanol based adsorption cycle was found to be the highest when the regeneration temperature 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 to adsorb up to 1.2 kg ethanol /kg ads as reported in Jerai et al [48]. Hassan [49] developed a simulation model for a refrigerator performing at a COP of 0.6 for AC/Methanol pair.…”

Section: Adsorption Characteristicsmentioning

confidence: 79%

“…review of the recent literature reveals that ethanol/modified activated carbon for low cooling temperature applications is a popular focus of research, mainly due to the non-toxicity, low-flammability, and environmentally benign nature of ethanol. A number of such modified activated carbon materials have uptakes approaching 1.2 kg ethanol /kg adsorbent[48, 59,60].…”

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confidence: 99%

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A state of the art of required techniques for employing activated carbon in renewable energy powered adsorption applications

Elsayed

Askalany

Shea

et al. 2017

Renewable and Sustainable Energy Reviews

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This paper reviews, for the first time, the measurement adsorption characteristics techniques to facilitate optimal testing of the validity of adsorbent materials in adsorption applications. Thermo-physical properties, adsorption characteristics and modelling techniques are presented. The characterisation of material thermo-physical properties includes true and bulk densities, specific heat capacity, surface area, pore volume distribution and thermal conductivity. The adsorption characteristics were categorized into adsorption isotherms and kinetics including experimental and theoretical equations. A range of models used in the simulation of adsorption cooling systems is presented and discussed. The paper highlights the conditions for which each measurement technique is most suitable and the limitations of modelling techniques, which is a vital element in the robust assessment of the performance of adsorption cooling units

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Section: Adsorption Characteristicsmentioning

confidence: 79%

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confidence: 99%

A state of the art of required techniques for employing activated carbon in renewable energy powered adsorption applications

Elsayed

Askalany

Shea

et al. 2017

Renewable and Sustainable Energy Reviews

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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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“…Recently, Biochar (BC) has been studied as a support agent to increase the surface area of the prepared supported materials [31]. BC, a pyrogenic activated black carbon made from biomass [32], has been widely reported in dyes removal due to its high adsorption capacity and a large surface area [33]. The utilization of BC to improve material characteristics has been widely reported.…”

Section: ■ Introductionmentioning

confidence: 99%

NiAl Layered Double Hydroxide/Rice Husk Composite for the Efficient Removal of Malachite Green

et al. 2022

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Rice husk biochar (BC) loaded NiAl layered double hydroxide (LDH) has been synthesized to form NiAl LDH/BC composite through a co-precipitation method. NiAl LDH/BC has been used as an adsorbent to remove malachite green from water efficiently. The specific surface area analysis revealed that the surface area of NiAl LDH/BC composite increased five times, from 92.6 to 438.9 m2/g, compared to the original NiAl LDH. The adsorption studies revealed that NiAl LDH/BC composite followed the pseudo-second-order kinetic adsorption model while the isotherm followed the Langmuir monolayer adsorption model. The maximum adsorption capacity of NiAl LDH/BC composite prepared with a ratio of 1:1 and 1:0.5 achieved 185.1 mg/g and 142.9 mg/g, respectively, which is twice higher than the pristine ones (NiAl LDH). The thermodynamic parameters, determined at 303, 313, 323, and 333 K, revealed that the adsorption process was spontaneous and endothermic. The NiAl LDH/BC composite was tested for three consecutive adsorption-desorption cycles to investigate its reusability performance. It is found that their adsorption performance slightly decreased to 71.8% and 68.3% for NiAl LDH/BC composite 1:0.5 and 1:1, respectively. Therefore, it could be considered that the synthesized NiAl LDH/BC exhibited a good and efficient adsorbent for malachite greed removal.

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Overview of Adsorption Cooling System based on Activated Carbon : Alcohol Pair

Cited by 11 publications

References 0 publications

A state of the art of required techniques for employing activated carbon in renewable energy powered adsorption applications

A state of the art of required techniques for employing activated carbon in renewable energy powered adsorption applications

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

NiAl Layered Double Hydroxide/Rice Husk Composite for the Efficient Removal of Malachite Green

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