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- Title
Ni-PVDF中空纤维膜阴极促进微生物电合成产甲烷.
- Authors
马晶伟; 王泽森; 徐鹏; 何秋来; 柯水洲
- Abstract
Microbial electrolysis cell can utilize biocathode attached to methanogens to reduce CO2 to methane.A conductive nickel-based polyvinylidene fluoride(Ni-PVDF) composite hollow fiber membrane was prepared by electroless nickel plating.The Ni-PVDF hollow fiber membrane was assembled into a membrane module electrode, which served as the biocathode of the microbial electrolysis cell for methane production.The H2 produced by the hydrogen evolution reaction catalyzed by the cathode nickel layer and CO2 were utilized by the hydrogenotrophic methanogens to produce methane through indirect electron transfer.The results showed that the cumulative methane production(2 176.24 mmol/(L·m²)) of the direct CO2 transport system using the Ni-PVDF hollow fiber membrane module cathode was much greater than that of the indirect CO2 transport system with the membrane module only acting as the cathode(613.94 mmol/(L·m²)) after the system run stably.The high specific surface area of the membrane module cathode and the direct CO2 transmission of the cathode greatly reduce the gas-liquid mass transfer resistance, thus ensuring the high methane production of the direct CO2 transmission system.
- Subjects
HOLLOW fibers; HYDROGEN evolution reactions; POLYVINYLIDENE fluoride; NICKEL-plating; MICROBIAL cells; PLANT fibers; PERMEATION tubes; CATALYTIC reforming; NICKEL (Coin)
- Publication
Applied Chemical Industry, 2022, Vol 51, Issue 11, p3140
- ISSN
1671-3206
- Publication type
Article