Abstract
Renewable fuels have been gaining attention worldwide due to their promise of lower carbon footprint and energy security as well as their flexibility in converting a wide range of biomass resources including agricultural residues. This study investigates the potential environmental advantages that could be gained by local conversion of wheat straw, a residue of wheat grain – a major cereal crop, to bioethanol in Kermanshah, Iran. To identify and recommend strategies to address the environmental impacts hotspots of 1 MJ wheat straw-based ethanol production and consumption compared with gasoline, a cradle-to-grave (Well-to-Wheel) life cycle assessment using TRACI 2.1 method was conducted. Subsystems considered within the system boundary of this study included wheat straw production and collection, transportation of wheat straw to biorefinery, conversion of the straw to bioethanol and electricity as a byproduct, and distribution and combustion of bioethanol. Results demonstrated that straw production and collection subsystem was the main contributor to the life cycle environmental impacts of the bioethanol in all categories, mainly due to on-farm emissions and electricity consumption for irrigation. Compared with gasoline (93 g CO2 eq/MJ), ethanol production and consumption avoided 55.7 g CO2 eq/MJ. Carbon sequestration during wheat cultivation subsystem and surplus electricity credit generated at the ethanol biorefinery subsystem offset majority of the negative impacts from other parts of the life cycle. An uncertainty analysis was performed in order to evaluate the effect of inherent variation in LCA model inputs of straw production on the carbon footprint of the system. Results indicated that the mean value of GHG emissions from wheat cultivation step is 254 kg CO2 eq/tonne wheat straw, confirming minimum uncertainty exists in our base case scenario.
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References
Sharma D, Saini A (2020) Introduction to lignocellulosic ethanol. Lignocellulosic Ethanol Production from a Biorefinery Perspective. Springer, Singapore, pp 1–21
USEIA (2019) The U.S. Energy information administration: short-term energy outlook. World liquid fuel production and consumption balance. Retrieved from https://www.eia.gov/outlooks/steo/report/global_oil.php.
Ge X, Burner DM, Xu J, Phillips GC, Sivakumar G (2011) Bioethanol production from dedicated energy crops and residues in Arkansas, USA. Biotechnol J 6:66–73. https://doi.org/10.1002/biot.201000240
NBP, National Biofuel Policy of Malaysia (2006) International Energy Agency: Kuala Lumpur, Malaysia, 2006; Volume 2006.
Ge J, Lei Y, Tokunaga S (2014) Non-grain fuel ethanol expansion and its effects on food security: A computable general equilibrium analysis for China. Energy 65:346–356. https://doi.org/10.1016/j.energy.2013.10.093
Papong S, Rewlay-ngoen C, Itsubo N, Malakul P (2017) Environmental life cycle assessment and social impacts of bioethanol production in Thailand. J Clean Prod 157:254–266. https://doi.org/10.1016/j.jclepro.2017.04.122
Kim S, Dale BE (2004) Global potential bioethanol production from wasted crops and crop residues. Biomass Bioenerg 26:361–375. https://doi.org/10.1016/j.biombioe.2003.08.002
Mohammadi IM (2007) Factors influencing wheat, flour, and bread waste in Iran. J N Seeds 8:67–78. https://doi.org/10.1300/J153v08n04_05
Panahi HKS, Dehhaghi M, Aghbashlo M, Karimi K, Tabatabaei M (2020) Conversion of residues from agro-food industry into bioethanol in Iran: An under-valued biofuel additive to phase out MTBE in gasoline. Renew Energ 145:699–710. https://doi.org/10.1016/j.renene.2019.06.081
FAO (2019) Food outlook - biannual report on global food markets – november 2019. Rome.
Taghavifar H, Mardani A (2015) Energy consumption analysis of wheat production in West Azarbayjan utilizing life cycle assessment (LCA). Renew Energ 74:208–213. https://doi.org/10.1016/j.renene.2014.08.026
Ingrao C, Matarazzo A, Gorjian S, Adamczyk J, Failla S, Primerano P, Huisingh D (2021) Wheat-straw derived bioethanol production: A review of Life Cycle Assessments. Sci Total Environ 781: p.146751
Hasanly A, Talkhoncheh MK, Alavijeh MK (2018) Techno-economic assessment of bioethanol production from wheat straw: a case study of Iran. Clean Technol Environ 20:357–377. https://doi.org/10.1007/s10098-017-1476-0
Beuel P, Rieker C, Bursche J (2019) Comparative life-cycle-assessment of pretreatment processes for the production of biofuels from lignocellulosic residues. In 2019 International Energy and Sustainability Conference (IESC) (pp. 1–5). IEEE.
Payraudeau S, Van der Werf HMG (2005) Environmental impact assessment for a farming region: a review of methods. Agr Ecosyst Environ 107:1–19. https://doi.org/10.1016/j.agee.2004.12.012
ISO (2006) Environmental Management. Life Cycle Assessment. Requirements and Guidelines. ISO 14044:2006. Int. Organ. Stand., Geneva.
Pourhashem G, Adler PR, McAloon AJ, Spatari S (2013) Cost and greenhouse gas emission tradeoffs of alternative uses of lignin for second generation ethanol. Environ Res Lett 8:025021. https://doi.org/10.1088/1748-9326/8/2/025021
Wang M, Wu M, Huo H (2007) Life-cycle energy and greenhouse gas emission impacts of different corn ethanol plant types. Environ Res Lett 2: P.024001. https://doi.org/10.1088/1748-9326/2/2/024001
Roy P, Tokuyasu K, Orikasa T, Nakamura N, Shiina N (2012) A techno-economic and environmental evaluation of the life cycle of bioethanol produced from rice straw by RT-CaCCO Process. Biomass Bioenerg 37:188–195. https://doi.org/10.1016/j.biombioe.2011.12.013
Wang L, Littlewood J, Murphy RJ (2013) Environmental sustainability of bioethanol production from wheat straw in the UK. Renew Sust Energ Rev 28:15–725. https://doi.org/10.1016/j.rser.2013.08.031
Juneja A, Kumar D, Murthy GS (2013) Economic feasibility and environmental life cycle assessment of ethanol production from lignocellulosic feedstock in Pacific Northwest US. J Renew Sustain Ener 5: p.023142
Sheehan J, Aden A, Paustian K, Killian K, Brenner J, Walsh M, Nelson R (2003) Energy and environmental aspects of using corn stover for fuel ethanol. J Ind Ecol 7:117–146
Morales M, Quintero J, Conejeros R, Aroca G (2015) Life cycle assessment of lignocellulosic bioethanol: environmental impacts and energy balance. Renew Sust Energ Rev 42:1349–1361
Borrion AL, McManus MC, Hammond GP (2012) Environmental life cycle assessment of bioethanol production from wheat straw. Biomass Bioenerg 47:9–19. https://doi.org/10.1016/j.biombioe.2012.10.017
USEIA (2019) The U.S. Energy Information Administration: Biofuels explained Ethanol and the environment. https://www.eia.gov/energyexplained/biofuels/ethanol-and-the-environment.php
Farahani SS, Asoodar MA (2017) Life cycle environmental impacts of bioethanol production from sugarcane molasses in Iran. Environ Sci Pollut R 24:22547–22556. https://doi.org/10.1007/s11356-017-9909-1
Statistics of Agriculture (2019) Ministry of Agriculture Jihad of Iran. 87pp.
ISO (2006) (a) Environmental Management. Life Cycle Assessment. Principle and Framework. ISO 14040:2006. Int. Organ. Stand., Geneva.
Milbrandt A (2005) Geographic perspective on the current biomass resource availability in the United States (No. NREL/TP-560–39181). National Renewable Energy Lab. (NREL), Golden, CO (United States).
NREL biofuel atlas (2020) https://maps.nrel.gov/biofuels-atlas/?aL=QCty_y%255Bv%255D%3Dt&bL=clight&cE=0&lR=0&mC=39.87601941962116%2C-92.46093749999999&zL=4) (Last accessed November, 2020).
Saeidi M, Abdoli M (2015) Effect of drought stress during grain filling on yield and its components, gas exchange variables, and some physiological traits of wheat cultivars. J AGRIC SCI Technol 17:885–898
Wernet G, Bauer C, Steubing B, Reinhard J, Moreno-Ruiz E, Weidema B (2016) The ecoinvent database version 3 (part I): overview and methodology. Int J Life Cycle Ass 21:1218–1230. https://doi.org/10.1007/s11367-016-1087-8
UMN (2018) University of Minnesota extension: Basics of fertilizer urea. https://extension.umn.edu/nitrogen/fertilizer-urea. (Last accessed November, 2020).
IPCC (2006) In: Hayama, J.I. (Ed.), IPCC Guidelines for National Greenhouse Gas Inventories. Available in http://www.ipcc-nggip.iges.or.jp/public/2006gl/pdf/4_ Volume4/V4_11_Ch11_N2O&CO2.pdf.
EPA (2020) U.S. Environmental Protection Agency. https://www.epa.gov/ingredients-used-pesticide-products/chemically-related-groups-active-ingredients
EI (2014) Energy Information. https://www.energyinformation.ir/energydatas/2014-01-07-16-29-40/2014-01-01-21-13-09/2014-01-01-21-36-41/964-2018-04-25-10-08-29
Raiesi F (2006) Carbon and N mineralization as affected by soil cultivation and crop residue in calcareous wetland ecosystem in Central Iran. Agr Ecosyst Environ 112:13–20. https://doi.org/10.1016/j.agee.2005.07.002
Nemecek T, Kägi T (2007) Life cycle inventories of agricultural production systems. Final Report Ecoinvent v2. 0 No 15.
Fantin V, Righi S, Rondini I, Masoni P (2017) Environmental assessment of wheat and maize production in an Italian farmers’ cooperative. J Clean Prod 140:631–643
EPA (2017) U.S. Environmental Protection Agency. Overview for Renewable Fuel Standard. Last accessed November, 2020. https://www.epa.gov/renewable-fuel-standard-program/overview-renewable-fuel-standard
SAEFL (2000) Handbuch Offroad-Datenbank, Swiss Agency for the Environment, Forest and Landscape Berne, Switzerland.
Humbird D, Davis R, Tao L, Kinchin C, Hsu D, Aden A (2011) Process design and economics for biochemical conversion of lignocellulosic biomass to ethanol. Golden, Colorado, US: National Renewable Energy Laboratory (NREL). https://doi.org/10.2172/1013269.
Karlsson H, Börjesson P, Hansson PA, Ahlgren S (2014) Ethanol production in biorefineries using lignocellulosic feedstock–GHG performance, energy balance and implications of life cycle calculation methodology. J Clean Prod 83:420–427. https://doi.org/10.1016/j.jclepro.2014.07.029
Ecoinvent (2007) Swiss centre for life cycle inventories (Ecoinvent Centre), Ecoinvent database. Ecoinvent Centre, Dubendorf.
Charles R, Jolliet O, Gaillard G, Pellet D (2006) Environmental analysis of intensity level in wheat crop production using life cycle assessment. Agr Ecosyst Environ 113:216–225. https://doi.org/10.1016/j.agee.2005.09.014
Buchspies B, Kaltschmitt M (2016) Life cycle assessment of bioethanol from wheat and sugar beet discussing environmental impacts of multiple concepts of co-product processing in the context of the European Renewable Energy Directive. Biofuels 7:141–153. https://doi.org/10.1080/17597269.2015.1122472
Zucaro A, Forte A, Fierro A (2018) Life cycle assessment of wheat straw lignocellulosic bio-ethanol fuel in a local biorefinery prospective. J Clean Prod 194:138–149
Motevali A, Teymori-Omran M, Ghobadian B, Najafi G (2020) Investigation of environmental impact of bioethanol production from potato waste. Fuel Combust 13:36–49
Zucaro A, Forte A, Fagnano M, Fierro A (2014) Life cycle assessment of maize cropping under different fertilization alternatives. Int J Performability Eng 10:427–436
Brentrup F, Küsters J, Lammel J, Barraclough P, Kuhlmann H (2004) Environmental impact assessment of agricultural production systems using the life cycle assessment (LCA) methodology II. The application to N fertilizer use in winter wheat production systems. Eur J Agron 20:265–279
Parajuli R, Kristensen IS, Knudsen MT, Mogensen L, Corona A, Birkved M, Peña N, Graversgaard M, Dalgaard T (2017) Environmental life cycle assessments of producing maize, grass-clover, ryegrass and winter wheat straw for biorefinery. J Clean Prod 142:3859–3871. https://doi.org/10.1016/j.jclepro.2016.10.076
Król-Badziak A, Pishgar-Komleh SH, Rozakis S, Księżak J (2021) Environmental and socio-economic performance of different tillage systems in maize grain production: Application of Life Cycle Assessment and Multi-Criteria Decision Making. J Clean Prod 278:123792. https://doi.org/10.1016/j.jclepro.2020.123792
Manzoor D, Aryanpur V (2017) Power sector development in Iran: A retrospective optimization approach. Energy 140:330–339. https://doi.org/10.1016/j.energy.2017.08.096
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The authors are grateful for financial support by University of Zabol under Grant Number of 971853.
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Safaripour, M., Ghanbari, A., Seyedabadi, E. et al. Investigation of environmental impacts of bioethanol production from wheat straw in Kermanshah, Iran. Biomass Conv. Bioref. 13, 5931–5941 (2023). https://doi.org/10.1007/s13399-021-01676-7
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DOI: https://doi.org/10.1007/s13399-021-01676-7