An innovative membrane bioreactor for methane biohydroxylation

作者：Pen N; Soussan L^*; Belleville M P; Sanchez J; Charmette C; Paolucci Jeanjean D

来源：Bioresource Technology, 2014, 174: 42-52.

DOI：10.1016/j.biortech.2014.10.001

• Membrane bioreactor
• Methane
• Microbial hydroxylation
• Methanol
• Methylosinus trichosporium OB3b

In this study, a membrane bioreactor (MBR) was developed for efficient, safe microbial methane hydroxylation with Methylosinus trichosporium OB3b. This innovative MBR, which couples a bioreactor with two gas/liquid macroporous membrane contactors supplying the two gaseous substrates (methane and oxygen) was operated in fed-batch mode. The feasibility and the reproducibility of this new biohydroxylation process were first demonstrated. The mass transfer within this MBR was twice that observed in a batch reactor in similar conditions. The productivity reached with this MBR was 75 +/- 25 mg methanol (g dry cell)(-1) h(-1). Compared to the literature, this value is 35 times higher than that obtained with the only other fed-batch membrane bioreactor reported, which was run with dense membranes, and is comparable to those obtained with bioreactors fed by bubble-spargers. However, in the latter case, an explosive gas mixture can be formed, a problem that is avoided with the MBR.

• 出版日期2014-12