A novel sequence batch membrane carbonation photobioreactor developed for microalgae cultivation  

作　　者：Caiyun Hou Sen Qiao Yue Yang Jiti Zhou 

机构地区：[1]Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education),School of Environmental Science and Technology,Dalian University of Technology,Dalian 116024,China

出　　处：《Frontiers of Environmental Science & Engineering》2019年第6期127-136,共10页环境科学与工程前沿（英文）

基　　金：This work was financial supported by the National Natural Science Foundation of China(Grant No.51878111);the LiaoNing Revitalization Talents Program(No.XLYC1807067);the Programme of Introducing Talents of Discipline to Universities(No.B13012).

摘　　要：In this study,a novel sequence batch membrane carbonation photobioreactor was developed for microalgae cultivation.Herein,membrane module was endowed functions as microalgae retention and CO2 carbonation.The results in the batch experiments expressed that the relatively optimal pore size of membranes was 30 nm,photosynthetically active radiation was 36 W/m^2 and the CO2 concentration was 10%(v/v).In long-term cultivation,the microalgal concentration separately accumulated up to 1179.0 mg/L and 1296.4 mg/L in two periods.The concentrations of chlorophyll a,chlorophyll b and carotenoids were increased about 23.2,14.9 and 6.3 mg/L respectively in period I;meanwhile,the accumulation was about 25.0,14.5,6.6 mg/L respectively in the periodⅡ.Furthermore,the pH was kept about 5.5-7.5 due to intermittent carbonation mode,which was suitable for the growth of microalgae.Transmembrane pressure(TMP)was only increased by 0.19 and 0.16 bar in the end of periodsⅠandⅡ,respectively.The pure flux recovered to 75%-80%of the original value by only hydraulic cleaning.Scanning electron microscope images also illustrated that carbonation through membrane module could mitigate fouling levels greatly.

关 键 词：Membrane carbonation SBM-C-PBR Cultivate microalgae Membrane fouling 

分 类 号：G63[文化科学—教育学]