BACKGROUND: Various methods, including centrifugation, filtration, electroflocculation, flocculation and flotation, have been developed for harvesting microalgae. However, some economic or technical problems still remain with current methods for algal recovery, such as high capital, energy and running costs, flocculant toxicity or low separation efficiency. Therefore, there is great interest in developing new efficient approaches for harvesting microalgae. RESULT: An efficient electroflocculation method integrated with dispersed-air flotation has been developed for harvesting Botryococcus braunii. The recovery efficiency of B. braunii reached 93.6% after 30min using an electroflocculation process. Microalgae recovery was improved significantly when the electroflocculation process was integrated with dispersed-air flotation; the recovery efficiency of B. braunii reached 98.9% after 14min. CONCLUSION: The present work demonstrated that electroflocculation integrated with dispersed-air flotation is a promising method suitable formicroalgae harvesting. The strategic air supply obviously shortened the algal recovery time in the process of electroflocculation due to facilitating algal aggregation and flotation to the solution surface. 迅數(shù)F200浮游生物計數(shù)儀 迅數(shù)新F100浮游生物計數(shù)儀 迅數(shù)Algacount C100藻類計數(shù)儀 迅數(shù)Z100浮游動物計數(shù)儀 迅數(shù)Algacount S300藻類智能鑒定計數(shù)儀 R100藻類輔助鑒定計數(shù)儀 S200藻類智能鑒定計數(shù)儀 M500多功能生物監(jiān)測儀 迅數(shù)Algacount M200多功能生物監(jiān)測儀 M300多功能生物監(jiān)測儀 菌落計數(shù)/篩選/YJ圈測量聯(lián)用儀 浮游生物/菌落分析儀