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引用本文:田娟,宋碧玉,林燊,余博识,李仁辉.两种改性粘土去除群体状铜绿微囊藻的比较.湖泊科学,2009,21(5):669-674. DOI:10.18307/2009.0509
TIAN Juan,SONG Biyu,LIN Shen,YU Boshi,LI Renhui.Removal of colonial Microcystis aeruginosa using two kinds of modified clays. J. Lake Sci.2009,21(5):669-674. DOI:10.18307/2009.0509
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两种改性粘土去除群体状铜绿微囊藻的比较
田娟1,2, 宋碧玉2, 林燊1, 余博识1, 李仁辉1
1.中国科学院水生生物研究所, 武汉 430072;2.武汉大学资源与环境科学学院, 武汉 430079
摘要:
实验采用壳聚糖和聚合氯化铝改性高岭土,进行以铜绿微囊藻为优势种的水华蓝藻去除的比较研究.研究采用动力学手段,通过去除效率的比较,得到线性方程:壳聚糖改性高岭土投加量(y)与藻细胞浓度OD680(x)和叶绿素a含量(x)之间的关系分别为:y=0.0349x-0.0019、y=0.0524x-0.009;聚合氯化铝改性高岭土投加量(y)与藻细胞浓度OD680(x)和叶绿素a含量(x)之间的关系分别为:y=0.0351x+0.0065、y=0.0676x-0.0059.壳聚糖改性粘土除藻的最适pH范围为5-8,聚合氯化铝改性粘土除藻的最适pH范围为5-9,pH范围相对较宽.电子传递速率分析表明壳聚糖改性粘土处理后1个月内藻趋于死亡,聚合氯化铝改性粘土处理过的藻,一周内藻开始黄化,衰老.
关键词:  聚合氯化铝  壳聚糖  改性粘土  絮凝  铜绿微囊藻  水华
DOI:10.18307/2009.0509
分类号:
基金项目:中国科学院“百人计划”项目(082303-1-501)
Removal of colonial Microcystis aeruginosa using two kinds of modified clays
TIAN Juan1,2, SONG Biyu2, LIN Shen1, YU Boshi1, LI Renhui1
1.Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P.R.China;2.School of Resource and Envirionmental Science, Wuhan University, Wuhan 430079, P.R.China
Abstract:
Microcystis waterbloom always occurs in colonial forms in natural waters. However, most laboratory studies on removal ofMicrocystis cells by various approaches were performed by using single-cell Microcystis strains. This study aimed to removeMicrocystis aeruginosa, as the dominant species in Chinese waters, by Chitosan and Polymeric Aluminum Chloride (PAC) modifiedclays(Kaolin). Using colonial Microcystis aeruginosa strain HAB 657, the relationships between the quantity of the chitosan modifiedclays(y) and OD 680 (x) and between the quantity of the chitosan modified clays(y) and the concentration of chlorophyll-a(Chl.a)(x) wasexpressed as y=0.0349x-0.0019 and y=0.0524x-0.009, respectively. While relationships between the quantity of the PAC modifiedclays(y) and the OD 680 (x), and between the quantity of the PAC modified clays(y) and the Chl.a(x) content were expressed asy=0.0351x+0.0065 and y=0.0676x-0.0059 respectively. It showed that the optimal pH ranged from 5 to 8 for chitosan modified claysto remove Microcystis cells, and PAC modified clays with 5-9 optimal pH. Analysis of Electron Transport Rate (ETR) showed thatsedimented Microcystis cells became yellowish and decayed in a week after treatment by PAC modified clay, and were dead in onemonth after the treatment of chitosan modified clays.
Key words:  PAC  chitosan  modified clays  flocculation  Microcystis aeruginosa  algal bloom
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