CSF絮凝微藻技术研究  

Studies on Technology of CSF Flocculation for Microalgae

作　　者：陈晓燕[1] 林向阳[1] 王静[1] 沈英[2] 阮榕生[1,3] 刘明华[4] 

机构地区：[1]福州大学生物科学与工程学院,福州350108 [2]福州大学机械工程及自动化学院,福州350108 [3]明尼苏达大学生态系统与农业工程系,美国明尼苏达圣保罗55108 [4]福州大学环境与资源学院,福州350108

出　　处：《中国食品学报》2016年第9期151-156,共6页Journal of Chinese Institute Of Food Science and Technology

基　　金：863项目(No.2012AA021704);国家自然科学基金项目(No.51108085)

摘　　要：从藻液中高浓度高效率地收获微藻,是限制微藻产业工业化规模发展的瓶颈。为此研究一种高效、环保、经济型的微藻收获新技术对微藻收获具有重要意义。阳离子淀粉絮凝剂(CSF)是收获微藻的新技术。在CSF(DS=0.32)絮凝微藻试验中,以絮凝效率为指标,研究搅拌时间、搅拌速度、沉降时间、微藻溶液的p H值对絮凝效率的影响,确定CSF絮凝微藻的最佳絮凝条件,并对CSF的安全性和经济性进行评估。结果表明:当搅拌时间10 min,搅拌速度200 r/min及沉降时间20 min时,絮凝效果最佳。CSF絮凝效率不受微藻絮凝体系中p H值的影响。CSF絮凝微藻不影响微藻的生理活性,是安全无害的絮凝剂。制备的取代度为0.32的CSF絮凝1 kg微藻,所需絮凝剂粗成本为0.2元,可满足微藻生物柴油的经济可行性。To harvest microalgae in a high concentration and efficiency way limits the scale development of mi- croalgae industry, so researching an efficient, environmentally friendly and economical technology on microalgae harvest- ing is of great significance for microalgae harvesting areas. Cationic starch flocculant is a new technology of microalgae harvesting. In microalgae flocculation experiments by CSF（DS=0.32）, taking flocculation efficiency as the target, examin- ing the influence of stirring time, stirring speed, settling time and pH value of the solution microalgae. And The safety and economy of CSF was assessed. The results show that the optimum flocculation condition was as follows： stirring time 10 min, stirring rate 200r/min, sedimentation time 20min; The microalgae flocculation efficiency is not affected by the pH value of microalgae flocculation system; CFS does not affect the physiological activity of microalgae and is a safe and sound flocculant; The flocculation cost for harvesting 1 kilogram microalgae was 0.2 yuan by using the prepared CSF （DS=0.32）, which meet the demand of economy in microalgae biodiesel.

关 键 词：微藻 收获 阳离子淀粉 絮凝效率 斜生栅藻 

分 类 号：TE667[石油与天然气工程—油气加工工程]