Assessment of Bioethanol Production from Sugar Beet Pulp and Green Energy Potential in Türkiye

Öz

In this study, the potential for converting sugar beet pulp a by product of sugar beet processing in Türkiye into energy is evaluated across three distinct scenarios. Using provincial level sugar beet production data, the amount of the resulting residue generated in each region was estimated. Based on lower heating values and conversion efficiencies reported in the literature, the electrical energy yield per metric ton of pulp was determined. By combining these unit values with annual production figures for each province, potential maps for bioethanol based electricity generation were developed at both provincial and regional scales. Additionally, the methods were assessed using normalized risk indicators covering environmental, technical, and economic dimensions, and their respective emissions were compared. Results show that although the bioethanol and Direct Ethanol Fuel Cell (DEFC) scenario yields lower energy output, it stands out as a sustainable alternative due to its low emission profile and balanced risk characteristics. The highest estimated production capacity was found in Konya at 66.69 GWh, followed by Eskişehir at 13.67 GWh. This study highlights sugar beet pulp as a valuable agricultural residue for bioethanol based green electricity generation in Türkiye and offers a quantitative regional framework to support biomass based energy planning. 

Anahtar Kelimeler

• Bioethanol
• direct ethanol fuel cell
• renewable energy potential
• sugar beet pulp.

Türkiye’de Şeker Pancarı Posasından Biyoetanol Üretimi ve Yeşil Enerji Potansiyelinin Değerlendirilmesi

Öz

Bu çalışmada, Türkiye'de şeker pancarı işlemenin bir yan ürünü olan şeker pancarı posasının enerjiye dönüştürülme potansiyeli üç farklı senaryo üzerinden değerlendirilmiştir. İl bazındaki şeker pancarı üretim verileri kullanılarak, her bölgede oluşan şeker pancarı posası miktarı tahmin edilmiştir. Literatürde bildirilen alt ısıl değerler ve dönüşüm verimlilikleri esas alınarak, bir metrik ton posa başına düşen elektrik enerjisi verimi belirlenmiştir. Bu birim değerlerin her ilin yıllık üretim rakamlarıyla birleştirilmesiyle, hem il hem de bölge ölçeğinde biyoetanol tabanlı elektrik üretimine yönelik potansiyel haritaları geliştirilmiştir. Ayrıca, yöntemler; çevresel, teknik ve ekonomik boyutları kapsayan normalize edilmiş risk göstergeleri kullanılarak değerlendirilmiş ve ilgili emisyon değerleri karşılaştırılmıştır. Sonuçlar, biyoetanol ve Doğrudan Etanol Yakıt Pili (DEFC) senaryosunun daha düşük enerji çıktısı vermesine rağmen, düşük emisyon profili ve dengeli risk özellikleri nedeniyle sürdürülebilir bir alternatif olarak öne çıktığını göstermektedir. En yüksek tahmini üretim kapasitesi 66,69 GWh ile Konya'da bulunmuş, bunu 13,67 GWh ile Eskişehir izlemiştir. Bu çalışma, şeker pancarı posasının Türkiye'de biyoetanol tabanlı yeşil elektrik üretimi için değerli bir tarımsal atık olduğunu vurgulamakta ve biyokütle tabanlı enerji planlamasını desteklemek için nicel bir bölgesel çerçeve sunmaktadır.

Anahtar Kelimeler

• Biyoetanol
• doğrudan etanol yakıt pili
• yenilenebilir enerji potansiyeli
• şeker pancarı posası

Kaynakça

1. [1] Vučurović D, Bajić B, Vučurović V, Jevtić-Mučibabić R, Dodić S. Bioethanol Production from Spent Sugar Beet Pulp—Process Modeling and Cost Analysis. Fermentation 2022;8:114. https://doi.org/10.3390/fermentation8030114.
2. [2] Alexandri M, López-Gómez JP, Olszewska-Widdrat A, Venus J. Valorising Agro-industrial Wastes within the Circular Bioeconomy Concept: the Case of Defatted Rice Bran with Emphasis on Bioconversion Strategies. Fermentation 2020;6:42. https://doi.org/10.3390/fermentation6020042.
3. [3] Stanek W. Thermo-Ecological Cost (TEC) –comparison of energy-ecological efficiency of renewable and non-renewable energy technologies. Energy 2022;261:125152. https://doi.org/10.1016/j.energy.2022.125152.
4. [4] Hajinezhad A, Lak M, Alimoradiyan H. Optimum energy analysis of separation and purification units for bioethanol production by the use of lignocellulose feedstock. Int J Energy Res 2021;45:15452–62. https://doi.org/10.1002/er.6815.
5. [5] Balanay R, Halog A. Bioenergy updates and prospects for decarbonization in the ASEAN region: A review on logistical concerns and potential solutions. WIREs Energy Environ 2024;13. https://doi.org/10.1002/wene.499.
6. [6] Tse TJ, Wiens DJ, Reaney MJT. Production of Bioethanol—A Review of Factors Affecting Ethanol Yield. Fermentation 2021;7:268. https://doi.org/10.3390/fermentation7040268.
7. [7] Dudek DN, Bueno IK, Rasbold LM, Pagnonceli J, Corrêa JM, Silva JL da C, et al. Enhance of Cellulase Production and Biomass Degradation by Transformation of the Trichoderma reesei RUT-C30∆zface1 Strain. Brazilian Arch Biol Technol 2020;63. https://doi.org/10.1590/1678-4324-2020190185.
8. [8] Mall AK, Misra V, Santeshwari, Pathak AD, Srivastava S. Sugar Beet Cultivation in India: Prospects for Bio-Ethanol Production and Value-Added Co-Products. Sugar Tech 2021;23:1218–34. https://doi.org/10.1007/s12355-021-01007-0.

9. [9] Wietschel L, Messmann L, Thorenz A, Tuma A. Environmental benefits of large‐scale second‐generation bioethanol production in the EU: An integrated supply chain network optimization and life cycle assessment approach. J Ind Ecol 2021;25:677–92. https://doi.org/10.1111/jiec.13083.
10. [10] Olivito F, Manickam M, Ilham Z, Wan‐Mohtar WAAQI, Nardi M, Procopio A. Biomass conversion to second‐ and third‐generation biofuels: recent developments. Biofuels, Bioprod Biorefining 2025. https://doi.org/10.1002/bbb.70078.
11. [11] Kumar R, Kumar N, Saini S, Singh C, Barnwal P, Panghal A. Ethanol from lignocellulosic biomass: pretreatment challenges and opportunities in sustainable waste management and energy Production. Biofuels, Bioprod Biorefining 2025;19:2712–38. https://doi.org/10.1002/bbb.70039.
12. [12] Ning P, Yang G, Hu L, Sun J, Shi L, Zhou Y, et al. Recent advances in the valorization of plant biomass. Biotechnol Biofuels 2021;14:102. https://doi.org/10.1186/s13068-021-01949-3.
13. [13] Singh A, Gangwar A, Kumar S. Prospects and limitations of existing biofuels and emerging trends in the utilization of nanoparticles for enhanced biofuel production and microbial fuel cell efficiency. Biofuels 2025;16:519–44. https://doi.org/10.1080/17597269.2024.2431766.
14. [14] Gumienna M, Szambelan K, Jeleń H, Czarnecki Z. Evaluation of ethanol fermentation parameters for bioethanol production from sugar beet pulp and juice. J Inst Brew 2014:n/a-n/a. https://doi.org/10.1002/jib.181.
15. [15] Patelski AM, Dziekońska-Kubczak U, Balcerek M, Pielech-Przybylska K, Dziugan P, Berłowska J. The Ethanol Production from Sugar Beet Pulp Supported by Microbial Hydrolysis with Trichoderma viride. Energies 2024;17:809. https://doi.org/10.3390/en17040809.
16. [16] Zhang Y, Yi Teah H, Xu F, Zhou T, Guo Z, Jiang L. Selective saccharification of crude glycerol pretreated sugarcane bagasse via fast pyrolysis: Reaction kinetics and life cycle assessment. Bioresour Technol 2023;382:129166. https://doi.org/10.1016/j.biortech.2023.129166.
17. [17] Usmani Z, Sharma M, Diwan D, Tripathi M, Whale E, Jayakody LN, et al. Valorization of sugar beet pulp to value-added products: A review. Bioresour Technol 2022;346:126580. https://doi.org/10.1016/j.biortech.2021.126580.
18. [18] Vučurović D, Bajić B, Vučurović V, Jevtić-Mučibabić R, Dodić S. Bioethanol Production from Spent Sugar Beet Pulp—Process Modeling and Cost Analysis. Fermentation 2022;8:114. https://doi.org/10.3390/fermentation8030114.
19. [19] Berlowska J, Pielech-Przybylska K, Balcerek M, Cieciura W, Borowski S, Kregiel D. Integrated Bioethanol Fermentation/Anaerobic Digestion for Valorization of Sugar Beet Pulp. Energies 2017;10:1255. https://doi.org/10.3390/en10091255.
20. [20] Singh A, Gangwar A, Kumar S. Prospects and limitations of existing biofuels and emerging trends in the utilization of nanoparticles for enhanced biofuel production and microbial fuel cell efficiency. Biofuels 2025;16:519–44. https://doi.org/10.1080/17597269.2024.2431766.
21. [21] Karayel GK, Dincer I. Development and experimental performance investigation of a newly designed phosphoric acid fuel cell system. J Power Sources 2025;644:237079. https://doi.org/10.1016/j.jpowsour.2025.237079.
22. [22] Yavuz Çelikdemir M. A Novel Approach to Flooding Fault Detection and Risk Assessment in PEM Fuel Cells Using Data‐Driven Models. IET Renew Power Gener 2025;19. https://doi.org/10.1049/rpg2.70074.
23. [23] Özdemir MT. Optimal parameter estimation of polymer electrolyte membrane fuel cells model with chaos embedded particle swarm optimization. Int J Hydrogen Energy 2021. https://doi.org/10.1016/j.ijhydene.2020.12.203.
24. [24] Çelikdemir S, Çelikdemir MY, Özdemir MT. A multi-criteria analytical hierarchy process framework for the design of Türkiye’s transcontinental hydrogen pipeline corridor. Int J Hydrogen Energy 2025;152:150208. https://doi.org/10.1016/j.ijhydene.2025.150208.
25. [25] Gupta UK, Pramanik H. Electrooxidation study of pure ethanol/methanol and their mixture for the application in direct alcohol alkaline fuel cells (DAAFCs). Int J Hydrogen Energy 2019;44:421–35. https://doi.org/10.1016/j.ijhydene.2018.03.008.
26. [26] Celikdemir S. A new voltage-power based approach for identifying the optimal parameters of PEM fuel cells. Int J Hydrogen Energy 2024;75:592–603. https://doi.org/10.1016/j.ijhydene.2024.04.020.
27. [27] Çelikdemir S, Yıldız S. Performance Evaluation of Proton Exchange Membrane Fuel Cell Under Different Operating Conditions for Aircraft Applications. Turkish J Electr Power Energy Syst 2026:23. https://doi.org/10.5152/tepes.2026.25037.
28. [28] Badwal SPS, Giddey S, Kulkarni A, Goel J, Basu S. Direct ethanol fuel cells for transport and stationary applications – A comprehensive review. Appl Energy 2015;145:80–103. https://doi.org/10.1016/j.apenergy.2015.02.002.
29. [29] de Oliveira DSBL, Colmati F, de Sousa R. Reaction Kinetics-Based Modeling and Parameter Sensitivity Analysis of Direct Ethanol Fuel Cells. Energies 2022;15:9143. https://doi.org/10.3390/en15239143.
30. [30] Çelikdemir S, Özdemir MT. An innovative approach to estimating green hydrogen production costs. Int J Hydrogen Energy 2025;144:582–92. https://doi.org/10.1016/j.ijhydene.2025.02.130.
31. [31] Çanka Kiliç F. Bioethanol In Turkey. Int J Ecosyst Ecol Sci 2020;10:19–30. https://doi.org/10.31407/ijees10.103.
32. [32] Turkish Statistical Institute (TUIK) 2025. https://biruni.tuik.gov.tr/medas/?kn=92&locale=tr (accessed March 23, 2026).
33. [33] Mehejabin F, Musharrat A, Ahmed SF, Kabir Z, Khan TMY, Saleel CA. Sustainable Biofuel Production Utilizing Nanotechnology: Challenges and Potential Solutions. GCB Bioenergy 2024;16. https://doi.org/10.1111/gcbb.70001.
34. [34] Balan V. Current Challenges in Commercially Producing Biofuels from Lignocellulosic Biomass. ISRN Biotechnol 2014;2014:1–31. https://doi.org/10.1155/2014/463074.
35. [35] Dybiński O, Milewski J, Szczęśniak A, Martsinchyk A, Szabłowski Ł. Experimental investigation of porous anode degradation of a molten carbonate fuel cell fed with direct fermentation product composed of bioethanol. Int J Hydrogen Energy 2024;52:889–901. https://doi.org/10.1016/j.ijhydene.2023.04.065.
36. [36] Sur S, Dave V, Prakesh A, Sharma P. Expansion and scale up of technology for ethanol production based on the concept of biorefinery. J Food Process Eng 2021;44. https://doi.org/10.1111/jfpe.13582.
37. [37] Qasem NAA, Abdulrahman GAQ. A Recent Comprehensive Review of Fuel Cells: History, Types, and Applications. Int J Energy Res 2024;2024. https://doi.org/10.1155/2024/7271748.
38. [38] da Silva Sousa P, Neto FS, de França Serpa J, de Lima RKC, de Souza MCM, Melo RLF, et al. Trends and challenges in hydrogen production for a sustainable energy future. Biofuels, Bioprod Biorefining 2024;18:2196–210. https://doi.org/10.1002/bbb.2686.
39. [39] Weimann GG, Bentsen NS. Potential for carbon dioxide removal of carbon capture and storage on biomass‐fired combined heat and power production. GCB Bioenergy 2024;16. https://doi.org/10.1111/gcbb.13184.
40. [40] T AK, M MM. Impact on spark ignition engine performance, combustion, and emissions for ethanol and petrol (gasoline) blends. Environ Prog Sustain Energy 2025. https://doi.org/10.1002/ep.70134.
41. [41] Osman AI, Nasr M, Mohamed AR, Abdelhaleem A, Ayati A, Farghali M, et al. Life cycle assessment of hydrogen production, storage, and utilization toward sustainability. WIREs Energy Environ 2024;13. https://doi.org/10.1002/wene.526.
42. [42] Ozturk M, Dincer I. An efficient waste management system with municipal solid waste incineration plant. Greenh Gases Sci Technol 2020;10:855–64. https://doi.org/10.1002/ghg.1955.
43. [43] Wanchan W, Yeetsorn R, Kuboon S, Mechler AK, Kumar P. Bimetallic nanocatalysts supported on sugarcane leaf-derived carbon for enhanced performance in direct alcohol fuel cells. J Power Sources 2025;644:237125. https://doi.org/10.1016/j.jpowsour.2025.237125.
44. [44] Çeli̇kdemi̇r S, Özdemi̇r MT. Multi-criteria optimization of green hydrogen hubs in Türkiye with integration to the Asia–Europe hydrogen corridor. Int J Hydrogen Energy 2026;215:153772. https://doi.org/10.1016/j.ijhydene.2026.153772.