title: Scenedesmus dimorphus biofilm: Photoefficiency and biomass production under intermittent lighting.
abstract: This study investigated the effect of intermittent lighting on the growth performances of a Scenedesmus dimorphus biofilm. Flashing light effect (FLE) is common in traditional suspended cultures of microalgae; yet, publications about this phenomenon, in the context of biofilm cultivation, are scarce. In this work we demonstrate that, thanks to intermittent illumination, it is possible for attached cultivations to fulfill FLE, improve photoefficiency and productivity as well as providing protection from photoinhibition using much lower flashing light frequencies than those usually required with suspended cultures. Medium frequency intermittent lighting (0.1 Hz) guaranteed excellent light integration resulting in 9.13 g m(-2) d(-1) biomass productivity, which was 8.9% higher than with continuous lighting. Results showed that a light fraction value of 0.5 always improved photoefficiency values as related to continuous light with a 118.8% maximum increase.
authors: CAS Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong, 266101, P. R. China.|University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
authors: Andrea Efrem
authors: AE
authors: Toninelli
authors: CAS Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong, 266101, P. R. China.
authors: Junfeng
authors: J
authors: Wang
authors: State Key Laboratory of Coal-based Low Carbon Energy, Bioenergy R &D Center of ENN Sci &Tech Co., Ltd, Langfang City, Hebei, 065001, China.
authors: Mingshen
authors: M
authors: Liu
authors: State Key Laboratory of Coal-based Low Carbon Energy, Bioenergy R &D Center of ENN Sci &Tech Co., Ltd, Langfang City, Hebei, 065001, China.
authors: Hong
authors: H
authors: Wu
authors: CAS Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong, 266101, P. R. China.
authors: Tianzhong
authors: T
authors: Liu
mesh_terms: D018441:Biofilms / Q000254:growth & development*; D018533:Biomass; D008029:Lighting; D044444:Scenedesmus / Q000502:physiology*