An energy system including biomass and waste streams should be considered a key instrument for a phosphorus management that supports a sustainable society. In order to do this efficiently, a fundamental understanding of reaction paths for phosphorus in high-temperature systems is crucial. Therefore, the model described in the awarded paper “Ash transformation reactions during combustion of biomass” was further developed from a Lewis acid/base-perspective.<br/>This shift to a descriptive model based on relative reactivity between molecules in certain reaction steps has proven useful to predict, and to some extent control, which phosphates that form in combustion of phosphorus-rich biomass and waste streams. It has also allowed a more detailed understanding on which reaction steps that may be limiting for other predictive models and how co-combustion of various fuels may assist in producing ash fractions with phosphates better suited for recovery of this crucial nutrient.

Ash transformation reactions for phosphorus-rich biomass and waste streams

254th National Meeting (2017)

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