摘要
研究了锌离子对HQ0211菌生长速度的影响,试验结果表明:在细菌的生长过程中,菌液中锌离子浓度低于1.0×10-3mol/L时,促进细菌的生长,即锌离子为营养离子;当菌液中锌离子浓度高于1.0×10-2mol/L时,则抑制细菌生长,即锌离子为毒性离子;当菌液中锌离子浓度为8×10-5mol/L时,细菌的生长速度最快.研究表明,适量锌离子能够提高细菌的生长速度,提高细菌的氧化活性和浸矿能力,从而提高工业生产的经济效益.
Studies the influence of zinc ions on the growth of the bioleaching thermophilic strain HQ0211. Experimental results showed that if the concentration of zinc ions in liquid medium is lower than 1.0×10^-3 mol/L, the growth of the strain is expedited, i. e., zinc ions play a nutrient role of growth. However, the growth is inhibited if the concentration is higher than 1.0×10^-2 mol/L, i.e., zinc ions play a toxic role of growth. In case the concentration is down to 8 ×10^-5 mol/L, the strain grows quickest. It was revealed that an appropriate amount of zinc ions enable the strain to grow quickly so as to improve the oxidizing activity and bioleaching ability of the strain, thus enhancing the industrial capacity and economic benefits.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第4期525-528,共4页
Journal of Northeastern University(Natural Science)
基金
国家高技术研究发展计划项目(2006AA06Z127)
国家自然科学基金资助项目(5027402450674029)
国家重点基础研究发展规划项目(2004CB418506)
辽宁省自然科学基金资助项目(20052030)
关键词
锌离子
细菌生长速度
细菌冶金
嗜热菌
浸矿细菌
zinc ion
bacteria growth
bacterial metallurgy
thermophilic strain
bioleaching bacteria
