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过程工程学报 ›› 2018, Vol. 18 ›› Issue (4): 872-878.DOI: 10.12034/j.issn.1009-606X.217377

• 环境与能源 • 上一篇    下一篇

能源微藻无泡采收新方法及其性能

邹小彤1, 徐开伟1, 文 豪1, 任香萤1, 沈 洲1,李彦鹏1,2,3*   

  1. 1. 长安大学环境科学与工程学院,陕西 西安 710054
    2. 长安大学旱区地下水文与生态效应教育部重点实验室,陕西 西安 710054
    3. 陕西省土地整治重点实验室,陕西 西安 710054
  • 收稿日期:2017-10-27 修回日期:2017-12-25 出版日期:2018-08-22 发布日期:2018-08-15
  • 通讯作者: 李彦鹏 liyanp01@chd.edu.cn
  • 基金资助:
    能源微藻气浮采收体系中气-液-固三相相互作用的物理化学机制;中央高校基本科研业务费专项;特长隧道内机动车排放PM2.5和NO2的特征及对能见度的影响

Novel method of buoy-bead flotation for harvesting micro-algae and its performance

Xiaotong ZOU1, Kaiwei XU1, Hao WEN1, Xiangying REN1, Zhou SHEN1, Yanpeng LI1,2,3*   

  1. 1. School of Environmental Science and Engineering, Chang?an University, Xi'an, Shaanxi 710054, China
    2. Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, Chang?an University, Xi'an,
    Shaanxi 710054, China
    3. Shaanxi Key Laboratory of Land Consolidation, Xi?an, Shaanxi 710054, China
  • Received:2017-10-27 Revised:2017-12-25 Online:2018-08-22 Published:2018-08-15
  • Contact: Yan-Peng LI liyanp01@chd.edu.cn

摘要: 采用低密度浮珠颗粒代替气泡的无泡采收方法,高效低成本采收能源微藻. 以常见能源微藻小球藻为例,以硅硼酸钠为浮珠,比较了浮珠浮选工艺与传统气浮法的区别,通过响应面法优化了浮珠浮选工艺. 结果表明,以硅硼酸钠为浮珠的无泡采收效果较理想,浮珠颗粒粒径、浓度和搅拌速率对采收率影响显著,颗粒直径56 ?m、浓度0.546 g/L、搅拌速率133 r/min的条件下采收率最好,达83.7%.

关键词: 生物柴油, 能源微藻, 浮珠浮选, 采收

Abstract: Buoy-bead flotation (BBF) technology used low density hollow microspheres instead of air bubbles to harvest microalgae with high efficiency and low energy consume. Chlorella vulgaris (common energy microalgae) and sodium borosilicate glass microspheres were chosen as experimental microalgae and cenospheres in BBF process. BBF method was compared with traditional dissolved air flotation method. Response surface methodology was used to optimize the process of BBF method. The results showed that the flotation rate with sodium borosilicate was ideal. Microspheres particle size, concentration and stirring speed had significant influence on flotation rate. The rate could be 83.7% under the conditions of particle size 56 ?m, particle concentration 0.546 g/L and stirring speed 133 r/min.

Key words: Biodiesel, Energy microalgae, Buoy-ball flotation, Harvesting