Economics and GHG emission reduction of a PLA bio-refinery system—Combining bottom-up analysis with price elasticity effects

Abstract This paper analyses energy savings, GHG emission reductions and costs of bio-refinery systems for polylactic acid (PLA) production. The systems comprise ‘multi-functional’ uses of biomass resources, i.e. use of agricultural residues for energy consumption, use of by-products, and recycling and waste-to-energy recovery of materials. We evaluate the performance of these systems per kg of bio-based polymer produced and per ha of biomass production. The evaluation is done using data of Poland assuming that biomass and PLA production is embedded in a European energy and material market. First, the performance of different bio-refinery systems is investigated by means of a bottom-up chain analysis. Second, an analysis is applied that derives market prices of products and land depending on the own-price elasticity of demand. Thus, the costs of bio-refinery systems depending on the demand of land and material are determined. It is found that all PLA bio-refinery systems considered lead to net savings of non-renewable energy consumption of 70–220 GJ/(ha yr) and net GHG emission reductions of 3–17 Mg CO2eq/(ha yr). Most of these PLA bio-refinery systems lead to net costs for the overall system of up to 4600 €/(ha yr). PLA production from short rotation wood leads to net benefits of about 1100 €/(ha yr) if a high amount of a high value product, i.e. fibres, is produced. Multi-functionality is necessary to ensure the viability of PLA bio-refinery systems from biomass with regard to energy savings and GHG emission reduction. However, the multi-functional use of biomass does not contribute much to overall incomes. Multifunctional biomass use – especially the use of biomass residues for energy consumption – contributes significantly to savings of non-renewable energy sources. Own-price elasticity of the demand for materials influences the overall costs of the bio-refinery system strongly. The own-price elasticity of land demand markets could become important if bio-refineries are introduced on a large scale.

[1]  P. Gruber,et al.  Polylactides “NatureWorks® PLA” , 2002 .

[2]  Clement A. Tisdell,et al.  The implication of carbon dioxide abatement policies on food prices. , 1999 .

[3]  Aldona Skarżyńska,et al.  Koszty jednostkowe i dochodowosc produkcji rolniczej w gospodarstwach indywidualnych w 1997 roku , 1999 .

[4]  Stefan Szczukowski,et al.  Mozliwosci wykorzystania biomasy Salix sp. pozyskiwanej z gruntow ornych jako ekologicznego paliwa oraz surowca do produkcji celulozy i plyt wiorowych , 1998 .

[5]  André Faaij,et al.  Cost and Co2-Emission Reduction of Biomass Cascading: Methodological Aspects and Case Study of SRF Poplar , 2005 .

[6]  Dolf Gielen,et al.  Modeling of global biomass policies , 2003 .

[7]  R. Gross,et al.  Chemicals from Biomass , 2007, Science.

[8]  David A. Glassner,et al.  Applications of life cycle assessment to NatureWorks polylactide (PLA) production , 2003 .

[9]  Kelly N. Ibsen,et al.  Lignocellulosic Biomass to Ethanol Process Design and Economics Utilizing Co-Current Dilute Acid Prehydrolysis and Enzymatic Hydrolysis for Corn Stover , 2002 .

[10]  Stefano Consonni,et al.  Performance and preliminary economics of black liquor gasification combined cycles for a range of kraft pulp mill sizes , 1998 .

[11]  Marie E. Walsh.  Method to estimate bioenergy crop feedstock supply curves , 2000 .

[12]  Donald Garlotta,et al.  A Literature Review of Poly(Lactic Acid) , 2001 .

[13]  Pavel Ciaian,et al.  The impact of the Common Agricultural Policy on income distribution and welfare in Central and Eastern European Countries , 2002 .

[14]  M. Ruth,et al.  Lignocellulosic Biomass to Ethanol Process Design and Economics Utilizing Co-Current Dilute Acid Prehydrolysis and Enzymatic Hydrolysis Current and Futuristic Scenarios , 1999 .

[15]  Stefan Speck,et al.  Waste management policies in Central and Eastern European countries: current policies and trends , 2001 .

[16]  R. P. V. D. Lans,et al.  Modelling and experiments of straw combustion in a grate furnace , 2000 .

[17]  P. L. Spath,et al.  Life cycle assessment of a biomass gasification combined-cycle power system , 1997 .

[18]  Robert Leaversuch.  Renewable PLA polymer gets 'green light' for packaging uses , 2002 .

[19]  Poland. Główny Urząd Statystyczny.  Concise statistical yearbook of Poland , 1930 .

[20]  A. Södergård,et al.  Properties of lactic acid based polymers and their correlation with composition , 2002 .

[21]  Clement A. Tisdell,et al.  Sustainable Agriculture and Environment: Globalisation and the Impact of Trade Liberalisation , 1999 .

[22]  J. C. van Weenen,et al.  Design for sustainable development. Crops for sustainable enterprise , 2000 .

[23]  Yoshihito Shirai,et al.  Racemization on thermal degradation of poly(l-lactide) with calcium salt end structure , 2003 .

[24]  V. Dornburg,et al.  Economic and greenhouse gas emission analysis of bioenergy production using multi-product crops¿case studies for the Netherlands and Poland , 2005 .

[25]  R. Suurs,et al.  Long Distance Bioenergy Logistics: An assessment of costs and energy consumption for various biomass transport chains , 2002 .

[26]  Christopher Green.  Potential Scale-Related Problems in Estimating the Costs of CO2 Mitigation Policies , 2000 .

[27]  J. E Annetts,et al.  Modelling the value of a rural biorefinery—part II: analysis and implications , 2003 .

[28]  Cutler J. Cleveland,et al.  Encyclopedia of Energy , 2004 .

[29]  A. Faaij,et al.  Efficiency and economy of wood-fired biomass energy systems in relation to scale regarding heat and power generation using combustion and gasification technologies , 2001 .

[30]  P. Nunes.  Towards a European Strategy for the security of energy supply , 2002 .

[31]  P. Flynn,et al.  Biomass power cost and optimum plant size in western Canada , 2003 .

[32]  E. Audsley,et al.  Modelling the value of a rural biorefinery--part I: the model description , 2003 .

[33]  Koichi Fujie,et al.  A new strategy for recycling and preparation of poly(L-lactic acid): hydrolysis in the melt. , 2003, Biomacromolecules.

[34]  Frank Taylor,et al.  Determining the Cost of Producing Ethanol from Corn Starch and Lignocellulosic Feedstocks , 2000 .

[35]  Charles E Wyman,et al.  Potential Synergies and Challenges in Refining Cellulosic Biomass to Fuels, Chemicals, and Power , 2003, Biotechnology progress.