摘要
以酿酒酵母菌(Saccharomyces cerevisiae)CGMCC 2.1188为出发菌株,通过麦芽汁培养基进行培养,采用^(60)Co源进行辐照,研究其在辐照下的生长存活情况和对酸碱环境的适应能力,并且初步考察了溶液的pH值、温度和吸附时间等因素对酿酒酵母菌生物吸附效果的影响。结果表明:辐照对酿酒酵母生长的影响很小,酿酒酵母最适合的生长pH值为7;在pH值为7、作用温度为30℃、作用时间为120 min的条件下,酿酒酵母对铯离子吸附的效果较好。利用酿酒酵母作为吸附剂处理含铯离子的废水具有应用潜力。
The original strains, Saccharomyces cerevisiae CGMCC 2.1188, cultivated by malt extract were irradiated by ^60Co source and the growth characteristics including the radiation resistance and the acid alkali-resistance were studied. The effects of pH value, temperature and time on the biosorption were studied. The results show that the radiation hardly influences the growth of the strain and the optimum growth pH value is 7.0. With pH value of 7.0, temperature at 30℃, and soaking time for 120 minutes, the cesium ions biosorption reaches the maximum. This study reveals that Saccharomyces cerevisiae can be applied to the treatment of wastewater with low concentration of cesium ions.
出处
《辐射研究与辐射工艺学报》
CAS
CSCD
2013年第5期53-57,共5页
Journal of Radiation Research and Radiation Processing
关键词
酿酒酵母
铯离子
生物吸附
Saccharomyces cerevisiae, Cesium ion, Biosorption
