Encapsulation of phase change materials using rice-husk-char

Abstract

This paper explored a new approach to prepare phase change microcapsules using carbon-based particles via Pickering emulsions for energy storage applications. Rice-husk-char, a by-product in biofuel production, containing 53.58 wt% of carbon was used as a model carbon-based material to encapsulate hexadecane. As a model phase change material, hexadecane was emulsified in aqueous suspensions of rice-husk-char nanoparticles. Water soluble polymers poly(diallyldimethyl-ammonium chloride) and poly(sodium styrene sulfonate) were used to fix the rice-husk-char nanoparticles on the emulsion droplets through layer-by-layer assembly to enhance the structural stability of the microcapsules. The microcapsules formed are composed of a thin shell encompassing a large core consisting of hexadecane. Thermal gravimetrical and differential scanning calorimeter analyses showed the phase change enthalpy of 80.9 kJ kg−1 or 120.0 MJ m−3. Design criteria of phase change microcapsules and preparation considerations were discussed in terms of desired applications. This work demonstrated possible utilisations of biomass-originated carbon-based material for thermal energy recovery and storage applications, which can be a new route of carbon capture and utilisation.

Publication DOI: https://doi.org/10.1016/j.apenergy.2016.08.102
Divisions: Engineering & Applied Sciences > Chemical Engineering & Applied Chemistry
Engineering & Applied Sciences > Aston Institute of Materials Research (AIMR)
Engineering & Applied Sciences > European Bioenergy Research Institute (EBRI)
Additional Information: © 2016, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords: layer-by-layer assembly,phase change microcapsules,pickering emulsion,rice husk char,thermal energy storage,Civil and Structural Engineering,Energy(all)
Full Text Link:
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2016-11-15
Published Online Date: 2016-08-28
Accepted Date: 2016-08-17
Submitted Date: 2016-06-06
Authors: Gondora, Wayne
Doudin, Khalid ( 0000-0003-3604-9861)
Nowakoski, Daniel J.
Xiao, Bo
Ding, Yulong
Bridgwater, Tony ( 0000-0001-7362-6205)
Yuan, Qingchun ( 0000-0001-5982-3819)

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