Methodological issues in life cycle assessment of mixed-culture polyhydroxyalkanoate production utilising waste as feedstock.

Highlights: [•] Cradle-to-grave life cycle assessments are preferable for the studied technology. [•] Multifunctionality creates an allocation problem – we suggest a solution. [•] Due to the electricity intensive technology the results show regional dependency. [•] Water use has not been assessed in previous studies but is potentially relevant. [Copyright &y& Elsevier]