Abstract
The influence of biopolymers on the pyrolysis yields is investigated using a semi-continuoushome-built pyrolysis reactor. All biopolymers show their specific benefits during the overallco-pyrolysis process. In a first attempt, each pyrolysis (pure willow and all I: I w/w ratiowillow/biopolymer blends) is evaluated based on nine objectives. Afterwards, ThomasSaaty's Analytic Hierarchy Process is used in order to obtain an objective ranking of thedifferent biopolymer options. The flash co-pyrolysis of I: I willow/PHB(Polyhydroxybutyrate) is the most performant option, while I: I willow/PLA (Polylactic acid),I:I willow/Biopearls and I: I willow/Potato starch show increased potential as well. The factthat biopolymers, despite their biodegradability, are considered as waste makes the flash copyrolysis of willow and biopolymers an additional necessity.
Highlights
Since the oil crisis ( l 970's) and more recently the Kyoto Protocol (2002), the European Union has become aware of the hazardous impact of its dependence on foreign energy sources [I], and started investing in the development of an alternative energy strategy to reinforce its independence
A myriad of biopolymers (PLA, Com Starch, PHB, Biopearls, Eastar, Solanyl and Potato Starch) has been investigated in identical circumstances to evaluate the effect of these different biopolymers on the flash co-pyrolysis behaviour of willow with the aid of Thomas Saaty's Analytic Hierarchy Process [15]
The experiments on willow/biopolymer blends with a w/w ratio of 1:1 are investigated and compared with the results obtained for I00% pure willow (= reference sample) to evaluate the effects on the flash co-pyrolysis behaviour
Summary
Since the oil crisis ( l 970's) and more recently the Kyoto Protocol (2002), the European Union has become aware of the hazardous impact of its dependence on foreign energy sources [I], and started investing in the development of an alternative energy strategy to reinforce its independence. The flash co-pyrolysis of willow and PLA at 450e°C has been reported too and showed a clear synergetic effect, resulting in an increased bio-oil yield with lower water content and a higher calorific value. The flash co-pyrolysis of biomass and biopolymers seems to be a promising route, as a supplier of renewable energy, and as a supplier of value-added materials, as an attractive method to upgrade bio-oil, and as an alternative waste treatment option. A myriad of biopolymers (PLA, Com Starch, PHB, Biopearls, Eastar, Solanyl and Potato Starch) has been investigated in identical circumstances to evaluate the effect of these different biopolymers on the flash co-pyrolysis behaviour of willow with the aid of Thomas Saaty's Analytic Hierarchy Process [15]
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