第18卷第4期 2018年8月
环境与能源
过程工程学报
The Chinese Jourmal of Process Engineering
Vol.18 No.4 Aug.2018
DOI: 10.12034/j.issn.1009-606X.217377
Novel method ofbuoy-bead flotation forharvesting micro-algae and its performance
XiaotongZOU',KaiweiXU',HaoWEN',Xiangying REN',Zhou SHEN',YanpengLI.23 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
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 glassmicrospheres were chosen as experimental microalgaeand cenospheres in BBF process. BBF method was compared with traditional dissolved airflotation 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 influcnce on flotation rate. The rate could be 83.7% under the conditions of particle size 56 μm, particle concentration 0.546 g/L and stirring speed 133 r/min.
Key words: biodiesel; energy microalgae; buoy-bead flotation; harvesting 能源微藻无泡采收新方法及其性能
邹小影，徐开伟"，文豪"，任香萤，沈洲，李彦鹏123” 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
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56μm、浓度0.546g/L、搅拌速率133r/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
中图分类号：TQ028 前言
文献标识码：A
文章编号：1009606X(2018)04087207
有前景的可再生绿色能源之一，其中采收环节至关重要，高效便捷、经济环保直接决定了能源微藻炼油的商
随着全球人口增长和人们生活、消费水平的提高，化石能源消耗大幅增加，开发可替代化石能源的新能源是目前的研究热点[]，微藻提炼的生物柴油被认为是最
业化(2]
气浮法(DAF)相较于传统的离心、膜过滤、电解等采收方法，具有快速、高效的优势，易大规模产业化应
收稿： 20171027,修园；20171225,网络发表： 20180611.Received:20171027,Revised:20171225,Published online; 20180611
基金项目：国家自然科学基金资助项目(编号：51478045)：陕西省自然科学基金资助项日(编号：2017JM5054)：中央高校基本科研业务费专项(编号：
310829163406,310829172001,310831161007)：陕西省土地整治重点实验室开放基金资助项目(编号：2018-ZD04)
作者简介：邹小形(1993-)，女，四川省重庆市人，硕士研究生，环境工程专业，Tel:13259935822,E-mail:277958214@qq.com：李意聘，通讯联系人，
Tel: 029-82339991, E-mail: liyanp01@chd.edu.cn
引用格式；玺小形，徐开伟，文豪，等。能源微藻无泡采收新方法及其性能，过程工程学报，2018,18(4):872-878.
ing micro-algae and its performance (in Chinese)
Zou X T, Xu K W, Wen H, et al. Novel method of buoy-bead flotation for harv
Chin. J. Proces Eng, 2018, 18(4): 872878, DOI: 10.12034/jissn.1009-606X.217377.
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