Bioconversion of Crude Glycerol into 1,3-Propanediol(1,3-PDO) with Bioelectrochemical System and Zero-Valent Iron Using Klebsiella pneumoniae L17

Da Seul Kong, Eun Joo Park, Sakuntala Mutyala, Minsoo Kim, Yunchul Cho, Sang Eun Oh, Changman Kim and Jung Rae Kim
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Da Seul Kong: School of Chemical Engineering, Pusan National University, Busan 46241, Korea
Eun Joo Park: School of Chemical Engineering, Pusan National University, Busan 46241, Korea
Sakuntala Mutyala: School of Chemical Engineering, Pusan National University, Busan 46241, Korea
Minsoo Kim: School of Chemical Engineering, Pusan National University, Busan 46241, Korea
Yunchul Cho: Department of Environmental Engineering, Daejeon University, 62 Daehak-ro, Dong-gu, Daejeon 34520, Korea
Sang Eun Oh: Department of Biological Environment, Kangwon National University, Gangwondo, Chuncheon 200-701, Korea
Changman Kim: Advanced Biofuel and Bioproducts Process Development Unit, Lawrence Berkeley National Laboratory, Emeryville, CA 94608, USA
Jung Rae Kim: School of Chemical Engineering, Pusan National University, Busan 46241, Korea

Energies, 2021, vol. 14, issue 20, 1-10

Abstract: Crude glycerol is a major byproduct in the production of biodiesel and contains a large number of impurities. The transformation of crude glycerol into valuable compounds such as 1,3-propanediol (1,3-PDO) using clean and renewable processes, like bioconversion, is an important task for the future of the chemical industry. In this study, 1,3-PDO bioproductions from crude and pure glycerol were estimated as 15.4 ± 0.8 and 11.4 ± 0.1 mmol/L, respectively. Because 1,3-PDO is a reductive metabolite that requires additional reducing energy, external supplements of electron for further improvement of 1,3-PDO biosynthesis were attempted using a bioelectrochemical system (BES) or zero-valent iron (ZVI). The conversions of crude and pure glycerol under electrode and iron-based cultivation were investigated for 1,3-PDO production accompanied by metabolic shift and cell growth. The BES-based conversion produced 32.6 ± 0.6 mmol/L of 1,3-PDO with ZVI implementation.

Keywords: crude glycerol; Klebsiella pneumoniae L17; 1,3-propanediol (1,3-PDO); bioelectrochemical system (BES); zero-valent iron (ZVI) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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