中国环境科学
 
 
中国环境科学  2024, Vol. 44 Issue (3): 1526-1533    DOI:
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磁性浮珠VMB@Fe3O4@CS对鱼腥藻和微囊藻的去除
车文露1, 赵岩1, 张高山1, 李彦鹏1,2
1. 长安大学水利与环境学院, 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
Effect and mechanism of magnetic floatable bead VMB@Fe3O4@CS on removing Anabaena and Microcystis
CHE Wen-lu1, ZHAO Yan1, ZHANG Gao-shan1, LI Yan-peng1,2
1. School of Water and Environment, Chang'an University, Xi'an 710054, China;
2. Key Laboratory of Subsurface Hydrology and Ecology in Arid Areas, Ministry of Education, Chang'an University, Xi'an 710054, China

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摘要 为了有效处理有害藻华,并避免化学物质二次污染,结合磁絮凝与浮珠浮选方法,以玻化微珠、Fe3O4、壳聚糖为原料合成磁浮珠VMB@Fe3O4@CS,对水华鱼腥藻和铜绿微囊藻进行去除实验.结果表明,磁浮珠对2种水华藻的最佳去除效率分别达到99.01%(0.12g/L)、98.6%(0.21g/L).VMB@Fe3O4@CS在较宽的pH值范围(4~10)和水温范围(5℃~35℃)内实现较高的去除率(>60%),离子强度的增加对微藻的去除起负面影响.通过形态学观察、表面疏水率及Zeta电位分析确定静电吸引、吸附架桥是磁浮珠对藻细胞主要的絮凝机理.制备的VMB@Fe3O4@CS去除有害藻华具有很大应用潜力.
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车文露
赵岩
张高山
李彦鹏
关键词 有害藻华磁性浮珠浮选絮凝    
Abstract:In order to effectively treat harmful algal blooms and avoid secondary pollution by chemical substances, maglev beads VMB@Fe3O4@CS were synthesized through a novel method combined with magnetic flocculation and float flotation which use vitrified microbeads, Fe3O4 and chitosan as raw materials, to remove Anabaena flos-aquae and Microcystis aeruginosa. The results showed that the optimal removal efficiencies of the two species of algae were 99.01% (0.12g/L) and 98.6% (0.21g/L), respectively. VMB@Fe3O4@CS achieved a high removal rate (> 60%) in a wide pH range (4~10) and water temperature range (5~35°C), and the increase of ionic strength had a negative effect on the removal of microalgae. Through morphological observation, surface hydrophobicity and Zeta potential analysis, it was determined that electrostatic attraction and adsorption bridging were the main flocculation mechanisms of maglev beads on algal cells. The experimental results show that the prepared VMB@Fe3O4@CS has a great potential to control harmful algal blooms.
Key wordsharmful algal blooms    magnetic buoyant-bead flotation    flocculation   
收稿日期: 2023-07-24     
PACS: X524  
基金资助:陕西省自然科学基金资助项目(2020JM-236)
作者简介: 车文露(1999-),女,山西运城人,长安大学硕士研究生,主要研究方向为微藻水处理及生物质能开发.发表1篇论文.chewenlu@chd.edu.cn.
引用本文:   
车文露, 赵岩, 张高山, 李彦鹏. 磁性浮珠VMB@Fe3O4@CS对鱼腥藻和微囊藻的去除[J]. 中国环境科学, 2024, 44(3): 1526-1533. CHE Wen-lu, ZHAO Yan, ZHANG Gao-shan, LI Yan-peng. Effect and mechanism of magnetic floatable bead VMB@Fe3O4@CS on removing Anabaena and Microcystis. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(3): 1526-1533.
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