Publications

Manuscripts in Revision / Submitted / Preparation

Under Review:

1. Suye Bae, Geon-Soo Ha, and Gahyun Baek. Evaluating the potential of treating organic acid-pretreated mixed fruit waste in a 13-L microbial electrolysis cell 

Submitted:

2. Chaeyeon Park, Min-Gu Sim, Seohyeon Kim, Geon-Soo Ha, Balachandran Manavalan and Gahyun Baek. Stress Condition Optimization for Maximizing Polyhydroxybutyrate Accumulation in Cupriavidus necator via Experimental and Ensemble Machine Learning Approaches 

In Preparation:

3. Min-Gu Sim, Do Hyuck Kwon, Chaeyeon Park, Kyung Hwa Cho, and Gahyun Baek. Synthetic Data-driven Prediction and Interpretation of Methane Generation in Direct Interspecies Electron Transfer-stimulated Anaerobic Digestion Process 

4. Geon-Soo Ha, Suye Bae, Sumin Lee, Daeun Jeong, and Gahyun Baek. Mechanistic insights into natural deep eutectic solvent pretreatment for enhancing anaerobic digestion of lignocellulosic biomass 

Published International Journal Papers (Google scholar)

1. Min-Gu Sim, Ruggero Rossi, Geon-Soo Ha, Gahyun Baek. (2025) A circular valorization of fat, oil, grease (FOG): Integrating FOG-derived biosurfactant production and FOG-fed microbial fuel cells. Bioelectrochemistry 109151

2. Myeonggyun Kim, Chaeyeon Park, Suye Bae, Sojeong Jang, Am Jang, Gahyun Baek. (2025) Boosting Microbial Electrosynthesis: Integrating Gas Diffusion Cathodes with Vapor-Fed Anode-Membrane Systems. Environ. Res. 123186

3. Yeonju Jeong, Sam Yeol Lim, Jechan Lee, Gahyun Baek. (2025) Textile Waste Upcycling into Air-cathode for Microbial Fuel Cell with Energy Recovery. Environ. Res. 123191

4. Hyeonjung Yu, Hanwoong Kim, Danbee Kim, Hyungmin Choi, Gahyun Baek, Changsoo Lee. (2025) Seasonal and storage effects on characteristics and anaerobic digestibility of cattle manure. Bioresour. Technol. 133535

5. Chaeyeon Park, Min-Jun Jeon, Minkyu Kang, Geon-Soo Ha, Seonho Lee, Heeeun Chang, Jechan Lee, Gahyun Baek. (2025) Enhancing anaerobic digestion of fat, oil, and grease (FOG) using electrically conductive and calcium-rich waste materials: A comparative performance analysis. Bioresour. Technol. 133086

6. Chaeyeon Park, Geon-Soo Ha, Myeonggyun Kim, Suye Bae, Yeonju Jeong, Min-Gu Sim, Bruce E. Logan, Gahyun Baek. (2025) A data-driven approach to evaluate performance trends across different scales of bioelectrochemical systems. Chem. Eng. J.  164918

7. Myeonggyun Kim, Geon-Soo Ha, Gahyun Baek. (2025) Influence of ion exchange membrane types on microbial electrosynthesis performance and biomethane production. Bioresour. Technol. 132711

8. Danbee Kim, Yunjeong Choi, Junho Cha, Huiju Park, Gahyun Baek, Changsoo Lee. (2025) Pre-fermentation and filtration pretreatments enhance hydrogen production from food waste through microbial electrolysis. Bioresour. Technol. 424, 132267

9. Geon-Soo Ha, Min-Gu Sim, Byong-Hun Jeon, Gahyun Baek . (2025) Bioremediation of perfluorooctanoic acid using microalgae with a transcriptomic approach. J. Hazard. Mat. 488, 137508

10. Yunjeong Choi, Danbee Kim, Junho Cha, Hyungmin Choi, Gahyun Baek, Changsoo Lee. (2024) Enhancing energy recovery from expired rice wine via microbial electrolysis of supernatant and anaerobic digestion of concentrate after gravity settling. J. Environ. Chem. Eng. 12 (6), 114654

11. Jinyoung Yoon, Dae-Yeol Cheong, Gahyun Baek. (2024) Predicting current and hydrogen productions from microbial electrolysis cells using random forest model. Appl. Energy 371, 123641

12. Junho Cha, Yunjeong Choi, Huiju Park, Danbee Kim, Gahyun Baek, Changsoo Lee. (2024) Combining pre-fermentation and microbial electrolysis for efficient hydrogen production from food wastewater. Process Saf. Environ. 187, 1471-1480

13. Gahyun Baek, Jechan Lee. (2024) Algae-derived Electrodes in Bioelectrochemical Systems: A Review. J. Environ. Chem. Eng. 12(3), 112535

14. Y Choi, D Kim, H Choi, J Cha, G Baek, C Lee. (2024) Comparative study of exoelectrogenic utilization preferences and hydrogen conversion among major fermentation products in microbial electrolysis cells. Bioresource Technology 393, 130032 

15. Y Choi, D Kim, H Choi, J Cha, G Baek, C Lee. (2023) A study of electron source preference and its impact on hydrogen production in microbial electrolysis cells fed with synthetic fermentation effluent. Bioengineered 14 (1), 2244759.

16. Gahyun Baek, Bruce E Logan. (2023) A comprehensive analysis of key factors influencing methane production from CO2 using microbial methanogenesis cells. Water Research, 120657.

17. Gahyun Baek, Danbee Kim, Yunjeong Choi, Junho Cha, Changsoo Lee. (2023) Challenges in engineering direct interspecies electron transfer for enhanced methanogenesis. Renewable and Sustainable Energy Reviews 183, 113503.

18.  Gahyun Baek, Changsoo Lee, and Jinyoung Yoon. (2023) Machine learning approach for predicting anaerobic digestion performance and stability under direct interspecies electron transfer-stimulated environments. Biochem. Eng. J. 193, 108840.

19. Danbee Kim, Hyungmin Choi, Hyeonjung Yu, Hanwoong Kim, Gahyun Baek, and Changsoo Lee. (2022) Potential treatment of aged cow manure using spare capacity in anaerobic digesters treating a mixture of food waste and pig manure. Waste Manage. 148, 22-32.

20. Gahyun Baek, Ruggero Rossi, Pascal E. Saikaly, and Bruce E. Logan. (2022) High-rate microbial electrosynthesis using a zero-gap flow cell and vapor-fed anode design. Water Res. 215, 118208.

21. Gahyun Baek, Le Shi, Ruggero Rossi, and Bruce E. Logan. (2022) Using copper-based biocathodes to improve carbon dioxide conversion efficiency into methane in microbial methanogenesis cells. Chem. Eng. J. 435, 135076.

22. Ruggero Rossi, Andy Hur, Martin A. Page, Amalia O’Brien Thomas, Joseph J. Butkiewicz, David W. Jones, Gahyun Baek, Pascal E. Saikaly, Donald M. Cropek, Bruce E. Logan. (2022) Pilot scale microbial fuel cells using air cathodes for producing electricity while treating wastewater. Water Res. 215, 118208.

23. Ruggero Rossi, Gahyun Baek, and Bruce E. Logan. (2021) Vapor-fed cathode microbial electrolysis cells enables greatly improved performance. Environ. Sci. Technol. 56(2), 1211-1220.

24. Gahyun Baek, Kyoung-Yeol Kim, and Bruce E. Logan. (2021) Impact of surface area and current generation of microbial electrolysis cell electrodes inserted into anaerobic digesters. Chem. Eng. J. 426, 131281.

25. Gahyun Baek, Jinsu Kim, Changsoo Lee. (2021) Effectiveness of electromagnetic in situ magnetite capture in anaerobic sequencing batch treatment of dairy effluent under electro-syntrophic conditions. Renew. Energy 179, 105-115.

26. Gahyun Baek, Ruggero Rossi, Pascal E. Saikaly, and Bruce E. Logan. (2021) ​The impact of different types of high surface area brush fibers with different biocompatibility and electrical conductivity on the rates of methane generation in anaerobic digestion. Sci. Tot. Environ. 147683.

27. Gahyun Baek, Ruggero Rossi, and Bruce E. Logan. (2021) Tracking current generation as a function of applied potential voltage can enable more energy-efficient operation of microbial electrolysis cells. Electrochim Acta 138590.

28. Ruggero Rossi, Gahyun Baek, Pascal E. Saikaly, Bruce E. Logan. (2021) Continuous flow microbial flow cell with anion exchange membrane for treating domestic wastewater. ACS Sustainable Chem Eng. 9 (7). 2946-2954.

29. Gahyun Baek, Pascal E. Saikaly, Bruce E. Logan. (2021) Addition of a carbon fiber brush improves anaerobic digestion compared to external voltage application. Water Res. 188, 116575.

30. Gahyun Baek, Le Shi, Ruggero Rossi, and Bruce E. Logan. (2021) The effect of high applied voltages on bioanodes of microbial electrolysis cells in the presence of chlorides. Chem. Eng. J. 126742.

31. Minjeong Kim, Mayzonee Ligaray, Yong Sung Kwon, Soobin Kim, Sangsoo Baek, Jongcheol Pyo, Gahyun Baek, Jingyeong Shin, Jaai Kim, Changsoo Lee, Young Mo Kim, Kyung Hwa Cho. (2020) Designing a marine outfall to reduce microbial risk on a recreational beach: field experiment and modeling. J. Hazard. Mat.124587.

32. Bruce E. Logan, Ruggero Rossi, Gahyun Baek, Le Shi, Jacqueline O'Connor, Wei Peng. (2020) Energy use for electricity generation requires an assessment more directly relevant to climate change. ACS Energy Lett. 5, 3514-3517.

33. Gahyun Baek, Danbee Kim, Jinsu Kim, Hanwoong Kim, Changsoo Lee. (2020) Treatment of cattle manure by anaerobic co-digestion with food waste and pig manure: methane yield and synergistic effect. Int. J. Environ. Res. Public Health. 17.13: 4737.

34. Heejung Jung, Gahyun Baek, and Changsoo Lee. (2020) Magnetite-assisted in situ microbial oxidation of H2S to S0 during anaerobic digestion: a new potential for sulfide control. Chem. Eng. J. 124982.

35. Gahyun Baek, Jinsu Kim, Jaai Kim, Changsoo Lee*. (2020) Individual and combined effects of magnetite addition and external voltage application on anaerobic digestion of dairy wastewater. Bioresour. Technol. 297, 122443.

36. Gahyun Baek, Jinsu Kim, Changsoo Lee*. (2019) A review of the effects of iron compounds on methanogenesis in anaerobic environments. Renew. Sust. Energ. Rev. 113, 109282.

37. Jinsu Kim, Gahyun Baek, Jaai Kim, Changsoo Lee*. (2019) Energy production from different organic wastes by anaerobic co-digestion: maximizing methane yield versus maximizing synergistic effect. Renew. Energ. 136, 683-690.

38. Gahyun Baek, Jinsu Kim, Jaai Kim, Changso Lee* (2018) Role and potential of direct interspecies electron transfer in anaerobic digestion. Energies 11, 1-18.

39. Gahyun Baek, Jinsu Kim, Seungyong Lee, Changsoo Lee*. (2017) Development of biocathode during repeated cycles of bioelectrochemical conversion of carbon dioxide to methane. Bioresour. Technol. 241, 1201-1207

40. Gahyun Baek, Heejung Jung, Jaai Kim, Changsoo Lee*. (2017) A long-term study on the effect of magnetite supplementation in continuous anaerobic digestion of dairy effluent - magnetic separation and recycling of magnetite. Bioresour. Technol. 241, 830-840.

41. Jaai Kim, Hakchan Kim, Gahyun Baek, Changsoo Lee*. (2017) Anaerobic co-digestion of spent coffee grounds with different waste feedstocks for biogas production. Waste Manage. 60, 322-328.

42. Gahyun Baek, Jaai Kim, Changsoo Lee*. (2016) A long-term study on the effect of magnetite supplementation in continuous anaerobic digestion of dairy effluent – enhancement in process performance and stability. Bioresour. Technol. 222, 344-354.

43. Gahyun Baek, Jaai Kim, Seung Gu Shin, Changsoo Lee*. (2016) Bioaugmentation of anaerobic sludge digestion with iron-reducing bacteria: process and microbial responses to variations in hydraulic retention time. Appl. Microbiol. Biotechnol. 100, 927-937.

44. Heejung Jung, Gahyun Baek, Jaai Kim, Seung Gu Shin, Changsoo Lee*. (2016) Mild-temperature thermochemical pretreatment of green macroalgal biomass: effect on solubilization, methanation, and microbial community structure. Bioresour. Technol. 199, 326-335.

45. Gahyun Baek, Jaai Kim, Kyungjin Cho, Changsoo Lee*. (2015) The biostimulation of anaerobic digestion with (semi)conductive ferric oxides: their potential for enhanced biomethanation. Appl. Microbiol. Biotechnol. 99, 10355-10366.

46. Gahyun Baek, Jaai Kim, Changsoo Lee*. (2014) Influence of ferric oxyhydroxide addition on biomethanation of waste activated sludge in a continuous reactor. Bioresour. Technol. 166, 596-601.