As a renewable and sustainable source for energy,environment,and biomedical applications,microalgae and microalgal biodiesel have attracted great attention.However,their applications are confined due to the cost-effic...As a renewable and sustainable source for energy,environment,and biomedical applications,microalgae and microalgal biodiesel have attracted great attention.However,their applications are confined due to the cost-efficiency of microalgal mass production.One-step strategy and continuous culturing systems could be solutions.However,current studies for optimization throughout microalgae-based biofuel production pipelines are generally derived from the batch culture process.Better tools are needed to study algal growth kinetics in continuous systems.A microfluidic chemostatic bioreactor was presented here,providing low-bioadhesive cultivations for algae in a cooperative environment of gas,nutrition,and temperature(GNT)involved with high throughput.The chip was used to mimic the continuous culture environment of bioreactors.It allowed simultaneously studying of 8×8 different chemostatic conditions on algal growth and oil production in parallel on a 7×7 cm^(2)footprint.On-chip experiments of batch and continuous cultures of Chlorella.sp.were performed to study growth and lipid accumulation under different nitrogen concentrations.The results demonstrated that microalgal cultures can be regulated to grow and accumulate lipids concurrently,thus enhancing lipid productivity in one step.The developed on-chip culturing condition screening,which was more suitable for continuous bioreactor,was achieved at a half shorter time,64-times higher throughput,and less reagent consumption.It could be used to establish chemostat cultures in continuous bioreactors which can dramatically accelerate the development of renewable and sustainable algal for CO_(2)fixation and biosynthesis and related systems for advanced sustainable energy,food,pharmacy,and agriculture with enormous social and ecological benefits.展开更多
基金All others acknowledge the support from National Natural Science Foundation of China(No.41476085,No.81471807)Dalian Science&Technology Bureau(Dalian Science and Technology Innovation Fund 2019J12SN55)+1 种基金General Program of Liaoning Science&Technology Department(2021-MS-345)Major Scientific Project of Interscholastic Collaboration of Universities of Liaoning(No.JYT-dldxjc-202001).
文摘As a renewable and sustainable source for energy,environment,and biomedical applications,microalgae and microalgal biodiesel have attracted great attention.However,their applications are confined due to the cost-efficiency of microalgal mass production.One-step strategy and continuous culturing systems could be solutions.However,current studies for optimization throughout microalgae-based biofuel production pipelines are generally derived from the batch culture process.Better tools are needed to study algal growth kinetics in continuous systems.A microfluidic chemostatic bioreactor was presented here,providing low-bioadhesive cultivations for algae in a cooperative environment of gas,nutrition,and temperature(GNT)involved with high throughput.The chip was used to mimic the continuous culture environment of bioreactors.It allowed simultaneously studying of 8×8 different chemostatic conditions on algal growth and oil production in parallel on a 7×7 cm^(2)footprint.On-chip experiments of batch and continuous cultures of Chlorella.sp.were performed to study growth and lipid accumulation under different nitrogen concentrations.The results demonstrated that microalgal cultures can be regulated to grow and accumulate lipids concurrently,thus enhancing lipid productivity in one step.The developed on-chip culturing condition screening,which was more suitable for continuous bioreactor,was achieved at a half shorter time,64-times higher throughput,and less reagent consumption.It could be used to establish chemostat cultures in continuous bioreactors which can dramatically accelerate the development of renewable and sustainable algal for CO_(2)fixation and biosynthesis and related systems for advanced sustainable energy,food,pharmacy,and agriculture with enormous social and ecological benefits.
