Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review
Investigation of functionalized carbon nanotubes' performance on carbon dioxide hydrate formation. / Nashed, Omar; Partoon, Behzad; Lal, Bhajan et al.
In: Energy, Vol. 174, 05.2019, p. 602-610.Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review
}
TY - JOUR
T1 - Investigation of functionalized carbon nanotubes' performance on carbon dioxide hydrate formation
AU - Nashed, Omar
AU - Partoon, Behzad
AU - Lal, Bhajan
AU - Sabil, Khalik Mohamad
AU - Mohd Shariff, Azmi
PY - 2019/5
Y1 - 2019/5
N2 - In this work, the impact of functional group on the thermodynamics and kinetics of CO2 hydrates are investigated experimentally. The hydroxylated multi-wall carbon nanotubes (OH-MWCNT) and carboxylated carbon nanotubes (COOH-MWCNT) along with pristine carbon nanotubes (MWCNT) are selected for this study. The carbon nanotubes are suspended in a 0.03 wt% sodium dodecyl sulfate (SDS) aqueous solution and the results are compared with SDS aqueous solution at the same concentration of 0.03 wt% and deionized water. The CO2 hydrate phase boundary and kinetic parameters of CO2 hydrate formation including induction time, the initial rate and amount of gas consumed, gas uptake, storage capacity, and water to hydrates conversion are studied. The results show that the nanofluids studied do not affect the equilibrium conditions of CO2 hydrates. In addition, 0.01 and 0.05 wt% of COOH-MWCNT mixed with 0.03 wt% SDS showed highest initial hydrate formation rate and gas uptake. Furthermore, a comparison between SDS and COOH-MWCNT (without stabilizer SDS) at 0.03 wt% revealed that addition of COOH-MWCNT to the water enhance the initial hydrates formation rate compared to SDS
AB - In this work, the impact of functional group on the thermodynamics and kinetics of CO2 hydrates are investigated experimentally. The hydroxylated multi-wall carbon nanotubes (OH-MWCNT) and carboxylated carbon nanotubes (COOH-MWCNT) along with pristine carbon nanotubes (MWCNT) are selected for this study. The carbon nanotubes are suspended in a 0.03 wt% sodium dodecyl sulfate (SDS) aqueous solution and the results are compared with SDS aqueous solution at the same concentration of 0.03 wt% and deionized water. The CO2 hydrate phase boundary and kinetic parameters of CO2 hydrate formation including induction time, the initial rate and amount of gas consumed, gas uptake, storage capacity, and water to hydrates conversion are studied. The results show that the nanofluids studied do not affect the equilibrium conditions of CO2 hydrates. In addition, 0.01 and 0.05 wt% of COOH-MWCNT mixed with 0.03 wt% SDS showed highest initial hydrate formation rate and gas uptake. Furthermore, a comparison between SDS and COOH-MWCNT (without stabilizer SDS) at 0.03 wt% revealed that addition of COOH-MWCNT to the water enhance the initial hydrates formation rate compared to SDS
U2 - 10.1016/j.energy.2019.02.193
DO - 10.1016/j.energy.2019.02.193
M3 - Journal article
VL - 174
SP - 602
EP - 610
JO - Energy
JF - Energy
SN - 0360-5442
ER -