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生态学杂志 ›› 2012, Vol. 31 ›› Issue (10): 2631-2634.

• 研究报告 • 上一篇    下一篇

三种絮凝剂对球等鞭金藻絮凝作用

高伟,李倩,李林,贾兴军,崔志松,周文俊,郑立**   

  1. (国家海洋局第一海洋研究所生态中心, 山东青岛 266061)
  • 出版日期:2012-10-10 发布日期:2012-10-10

Flocculating effect of three kinds of flocculants on Isochrysis galbana.

GAO Wei, LI Qian, LI Lin, JIA Xing-jun, CUI Zhi-song, ZHOU Wen-jun, ZHENG Li**   

  1. (Marine Ecology Research Center, The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, Shandong, China)
  • Online:2012-10-10 Published:2012-10-10

摘要: 以3种絮凝剂对等鞭金藻的采收效果及其对藻体的影响为研究目标,以分光光度法、重量法以及显微镜观测为主要研究方法,测定了絮凝剂对藻细胞的絮凝效率、藻体总脂含量的影响以及藻细胞形态变化。结果表明:氯化铁和明矾的絮凝速率最快(<4 h);氯化铁浓度≥20 mg·L-1,明矾浓度≥80 mg·L-1时,可以絮凝沉淀90%以上藻体;比较藻体的损伤程度和总脂产率发现,明矾浓度为80 mg·L-1时,藻体总脂产率的最高,达29.9%,并且对细胞伤害最小;可采用80 mg·L-1明矾作为絮凝剂对球等鞭金藻进行采收,为生物柴油制备生产提供基础原料。

关键词: Cd胁迫, 活性氧, NO, Ca, 植物激素

Abstract: Aimed to investigate the flocculating effect and impairment of three kinds of flocculants on Isochrysis galbana, spectrophotometry and gravimetric method were adopted to determine the flocculating rate, and morphological observation and total ester measurement were made to evaluate the flocculating impairment on algae cell. The results showed that ferric chloride and alum showed higher flocculating velocity (less than 4 hours). For flocculating >90% of algae cells, a dose of ≥20 mg·L-1 of ferric chloride or at least 80 mg·L-1 of alum was required. At a dose of 80 mg·L-1 of alum, the algal total lipid productivity was the highest (29.9%), while the impairment on the cell integrity was the least, suggesting that 80 mg·L-1 of alum could be used as the flocculant to harvest I. galbana for biofuel production.

Key words: cadmium stress, ROS, NO, Ca, plant hormone.