摘要
选择鱼腥藻、蛋白核小球藻和羊角月牙藻等实验藻种,研究并筛选出对偶氮染料具有最佳脱色效果的实验藻种,然后选择真菌(黄孢原毛平革菌)和细菌(枯草芽孢杆菌),分别构建单一微藻、微藻-真菌、微藻-细菌、微藻-真菌-细菌等四大实验体系,综合考察不同体系对偶氮染料的脱色效果及影响因素。结果表明:(1)单一微藻体系中,蛋白核小球藻对偶氮染料的脱色效果最为显著;(2)各体系最佳反应pH均为7;(3)单一微藻及菌藻共生体系对染料脱色效果随其浓度呈正态分布,酸性大红浓度80 mg/L、孔雀石绿浓度15 mg/L时,脱色效果最为显著;(4)脱色效率上,微藻-真菌-细菌体系>微藻-真菌体系>微藻-细菌体系>单一微藻体系;(5)菌藻共生体在初始1 h内产生明显脱色反应,而单一微藻体系对偶氮染料的脱色反应较为迟缓。
Out of several experimental algae species such as Anabaena, Chlorella pyrenoidosa, P. craccina, and etc., the best ones for decolorising azo dyes were selected, and then fungi(Phanerochaete chrysosporium) and bacteria(Bacillus subtilis) were chosen as well to set up four experimental systems, namely single microalgae, microalgae-fungi, microalgae-bacteria, and microalgae-fungi-bacteria. Effects and influential factors of those different systems on decolorising azo dyes were comprehensively investigated. It was found that:(1) in single microalgae system, the decolorization of azo dyes by Chlorella pyrenoidosa was the most significant;(2) for optimal reaction, pH value in all systems was 7;(3) effects of single microalgae and bacteria-algae symbiotic systems on the decolorization showed a normal distribution versus the concentration of dyes, whilst the most remarkable decolorization effect occurred at 80 mg/L of acid red or 15 mg/L of malachite green;(4) the decolorization efficiencies of different systems could be ranked in descending order as microalgae-fungi-bacteria, microalgae-fungi, microalgaebacteria, and single microalgae;(5) the decolorization reaction of bacteria-algae symbiont occurred evidently in the initial one hour, whilst that of single microalgae system did rather sluggishly.
作者
周文永
朱紫燕
苏晴
祝梦燕
王娟
Zhou Wenyong;Zhu Ziyan;Su Qing;Zhu Mengyan;Wang Juan(College of Biological and Chemical Engineering,Jiaxing University,Jiaxing 314001)
出处
《上海环境科学》
CAS
2019年第5期224-230,共7页
Shanghai Environmental Sciences
关键词
藻类
菌藻共生体
偶氮染料
印染废水
生物降解
Algae
Bacteria-algae symbiont
Azo dyes
Printing and dyeing wastewater
Bio-degradation
