TY - JOUR
T1 - Study on biomass derived activated carbons for adsorptive heat pump application
AU - Pal, Animesh
AU - Thu, Kyaw
AU - Mitra, Sourav
AU - El-Sharkawy, Ibrahim I.
AU - Saha, Bidyut Baran
AU - Kil, Hyun Sig
AU - Yoon, Seong Ho
AU - Miyawaki, Jin
N1 - Funding Information:
This work was financially supported by Program for Leading Graduate School, Green Asia Education Center, Kyushu University, Japan.
Publisher Copyright:
© 2017 Elsevier Ltd
PY - 2017
Y1 - 2017
N2 - Biomasses are renewable resources and suitable precursors for synthesis of activated carbons (ACs). Two biomass sources: (i) Waste Palm Trunk (WPT) and (ii) Mangrove (M) are employed to synthesis activated carbons with huge surface area by chemical activation with potassium hydroxide (KOH). Thermophysical characteristics of the derived activated carbons namely thermal conductivity, particle size distribution, pore size distribution, surface area and pore volume are assessed. The total surface area of WPT-derived AC and mangrove-derived AC are found to be as high as 2927 m2 g−1 and 2924 m2 g−1, respectively. The adsorption capacities of the synthesized biomass-derived ACs for ethanol are evaluated for assorted temperature and pressure conditions. It is observed that WPT-AC shows an ethanol uptake of 1.90 kg kg−1 whilst the M-AC can adsorb up to 1.65 kg kg−1. The isosteric heat of adsorption associated with the present adsorbents/adsorbate (ACs/ethanol) calculated at different coverages showed only marginal difference. For a typical operating condition of adsorption heat pump, both biomass derived ACs showed similar net ethanol uptake which is significantly higher than the net uptake of commercially prevalent Maxsorb III AC.
AB - Biomasses are renewable resources and suitable precursors for synthesis of activated carbons (ACs). Two biomass sources: (i) Waste Palm Trunk (WPT) and (ii) Mangrove (M) are employed to synthesis activated carbons with huge surface area by chemical activation with potassium hydroxide (KOH). Thermophysical characteristics of the derived activated carbons namely thermal conductivity, particle size distribution, pore size distribution, surface area and pore volume are assessed. The total surface area of WPT-derived AC and mangrove-derived AC are found to be as high as 2927 m2 g−1 and 2924 m2 g−1, respectively. The adsorption capacities of the synthesized biomass-derived ACs for ethanol are evaluated for assorted temperature and pressure conditions. It is observed that WPT-AC shows an ethanol uptake of 1.90 kg kg−1 whilst the M-AC can adsorb up to 1.65 kg kg−1. The isosteric heat of adsorption associated with the present adsorbents/adsorbate (ACs/ethanol) calculated at different coverages showed only marginal difference. For a typical operating condition of adsorption heat pump, both biomass derived ACs showed similar net ethanol uptake which is significantly higher than the net uptake of commercially prevalent Maxsorb III AC.
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U2 - 10.1016/j.ijheatmasstransfer.2017.02.081
DO - 10.1016/j.ijheatmasstransfer.2017.02.081
M3 - Article
AN - SCOPUS:85015046784
SN - 0017-9310
VL - 110
SP - 7
EP - 19
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
ER -
