||Life cycle assessment study on the production of biopolymer from industrial waste water : PHA based on wastewater from pulp & paper industry
||Jordan, Carlo (QSA, MAN, Technical University of Denmark, DTU, DK-2800 Kgs. Lyngby, Denmark)
||Olsen, Stig Irving (QSA, MAN, Technical University of Denmark, DTU, DK-2800 Kgs. Lyngby, Denmark)
||Technical University of Denmark, DTU, DK-2800 Kgs. Lyngby, Denmark
||Polyhydroxyalkanoates (PHAs) constitute a family of biopolymers. In recent times, this
biodegradable material has gained a lot of attention due to its properties and its capability of being
produced from renewable carbon sources based on agriculture or even on industrial wastes. The
production of PHA is in a very early stage and is therefore subject of ongoing research. The
company, AnoxKaldnes, is currently investigating the production of PHA from different industrial
The study presents a comparative life cycle assessment on a process system which treats
wastewater from pulp and paper industry and simultaneously produces PHA (PHA production
system), with respect to a reference system consisting of a conventional activated sludge treatment
via mesophilic anaerobic digestion for biogas production (CH4 production system).
The life cycle inventory analysis consisted of data collection and calculation procedure to quantify
the total inputs and outputs of the systems covered in the study, hence mass- and energy balance at
the level of unit process have been carried out. The PHA production system showed a daily
production of 45.28 kg of PHA.
In order to quantify the environmental impacts the EDIP1 method has been applied. The reference
system presented slightly less environmental impacts than the PHA system. Finally it was
concluded that investigation was needed in order to achieve an optimization of operation parameters
in the PHA system.
Creation date: 2009-04-03
Update date: 2009-04-03