NSERC Environmental Design Engineering

Montréal, Canada

NSERC Environmental Design Engineering

Montréal, Canada

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Ghezzaz H.,NSERC Environmental Design Engineering | Stuart P.,NSERC Environmental Design Engineering
Pulp and Paper Canada | Year: 2011

The objective of this paper is to evaluate the impact of the availability and quality of biomass on the choice of promising biorefinery product-process configurations, for an existing integrated pulp mill at the early design stage. Biomass available around the case study mill was identified and biomass supply curves were developed. The profitability of several biorefinery technology configurations producing different bioproducts was broadly evaluated using classical techno-economic methods. For the case study mill and under the used assumptions, the results show that the profitability of thermochemical processes is strongly dependent on access to abundant low cost biomass feedstocks. The after-tax Internal Rate of Return (IRR) of the fast pyrolysis process option was found to be higher than 28% for large capacities when woody residues are used. For biochemical processes, the quality of biomass strongly affects profitability. Hardwood seems to be the most suitable feedstock for the considered biochemical process options. The IRR of ethanol and phenol-formaldehyde resin co-production using the organosolv process is higher than 26% for large capacities.


Janssen M.,NSERC Environmental Design Engineering | Stuart P.,NSERC Environmental Design Engineering
Pulp and Paper Canada | Year: 2010

A set of high-level drivers and barriers related to the implementation of the forest biorefinery (FBR) are identified with the help of an expert industry panel. The panel, working on the principles of multi-criteria decision making (MCDM), concludes that the appeal of biorefining is its potential for short-and long-term financial gain, while uncertainty about the technology is its largest drawback. Following the panel discussion, the Analytic Hierarchy Process (AHP) was applied to make pair-wise comparisons to determine the importance of each driver and barrier. The consistency ratio of the pair-wise comparisons are found to be below 0.10 and therefore the weighting results can be considered trustworthy overall. The policy-related barrier is found to be the least important and its weight is significantly higher than the weight for the policy-related driver.

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