title: Fiber-optic differential absorption sensor for accurately monitoring biomass in a photobioreactor.
abstract: A fiber-optic differential absorption sensor was developed to accurately monitor biomass growth in a photobioreactor. The prepared sensor consists of two probes: the sensor and the reference. The sensor probe was employed to monitor the biomass and changes in the liquid-phase concentration in a culture. To separate the liquids from photosynthetic bacteria CQK 01 and measure the liquid-phase concentration, a proposed polyimide-silica hybrid membrane was coated on the sensing region of the reference probe. A linear relationship was observed between the sensor output signal and the biomass from the lag phase to the decline phase.
authors.forename: Nianbing
authors.initials: N
authors.lastname: Zhong
authors.forename: Qiang
authors.initials: Q
authors.lastname: Liao
authors.forename: Xun
authors.initials: X
authors.lastname: Zhu
authors.forename: Mingfu
authors.initials: M
authors.lastname: Zhao
mesh_terms: D001419:Bacteria / Q000737:chemistry*; D018533:Biomass; D004867:Equipment Design; D005336:Fiber Optic Technology; D007094:Imides / Q000737:chemistry; D008567:Membranes, Artificial; D055096:Optical Devices; D055100:Optical Fibers; D058433:Photobioreactors; D010788:Photosynthesis; D012822:Silicon Dioxide / Q000737:chemistry
chemical_list: D007094:Imides; D008567:Membranes, Artificial; D012822:Silicon Dioxide