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Carbon dioxide capture and utilisation for biocomposites

Cury Marques, Fabricio (2016)
Ph.D. thesis, University of Birmingham.

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Abstract

The ever-growing emission of greenhouse gases has been a major contributor to climate change. Solutions include CO2 storage and utilisation. Moreover, scarcity of non-renewable resources has driven adoption of biocomposites. Therefore merging CO2 utilisation with biocomposites was investigated.
Combinations of natural fibres and solutions were screened for their CO2 capture capacity, and chosen for optimisation of reaction pressure, temperature and time using the response surface method (RSM) to maximise CO2 capture.
Thermogravimetric analysis (TGA) was used to carry out kinetic analysis of isothermal CO2 capture, using the optimised sorbents. Sorbents were also pyrolised and decomposition temperatures indicated presence of ammonium bicarbonate and carbonate, and sodium bicarbonate, which were also confirmed with FTIR and Scanning Electron Microscopy.
Recycled LDPE was compounded with sorbents to make biocomposites, and the effect of sorbent loading and extruder die temperature on their physical properties was modelled with RSM. The densities, yield and ultimate strengths were higher at lower sorbent-loadings and die temperatures, whereas Young’s moduli were higher at higher sorbent-loadings and die temperatures.
TGA of biocomposites showed single-step decomposition and the same temperature of maximum degradation rate. Kinetic analysis revealed that some biocomposites increased the thermal stability of LDPE.

Type of Work:Ph.D. thesis.
Supervisor(s):Santos, Regina and Hammond, Peter and Rowson, Neil and Baig, Muhammad
School/Faculty:Colleges (2008 onwards) > College of Engineering & Physical Sciences
Department:School of Chemical Engineering
Additional Information:

Embargo to 31 July 2019 (2016 PhD)

Subjects:TP Chemical technology
Institution:University of Birmingham
ID Code:6572
This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder.
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