摘要
重金属污水的排放会破坏生态环境,并通过食物链危害人体和其他动物。该研究在含高浓度铜和铬离子的液体培养基中分别接入三种细菌:大肠杆菌(Escherichia coli)、枯草芽孢杆菌(Bacillus subtilis)、克雷伯氏菌(Klebsiella sp.)和两种光合藻类:斜生栅藻(Scenedesmus obliquus)、小球藻(Chlorella vulgaris),通过测定培养前后离子的浓度变化,来了解这些微生物对铜离子、铬离子的吸附能力。结果表明,所用细菌对铜离子和铬离子都有较强的吸附能力,铜离子吸附率最高能达到97.8%,铬离子最高能达到99.31%;而所用藻类对铜离子有很强的吸附能力,最高能达到99.99%,对铬离子的吸附率也很可观,处于95%左右。利用微生物处理重金属污水有着较好的效果,且该方法去除较彻底、费用低,因此拥有广阔的应用前景。
Heavy metal wastewater discharge can destroy the ecological environment and harm human beings and other animals through the food chain. In this study, three bacteria （Escherichia coli, Bacillus subtilis, Klebsiella sp.） and two types of photosynthetic algae （Scenedesmus obliquus, Chlorella vulgaris） were inoculated into a liquid medium which contained high concentration of copper and chromium ions. To know the microorganisms＇ ion adsorption capacity, the changes of the ions concentration before and after culture were measured. The results showed that the bacteria have a strong adsorption capacity of absorbing copper ions and chromium ions. The copper ion adsorption rate can reach 97.8% and the chromium ion adsorption rate can reach 99.31%. However, the algae have a strong adsorption capacity of copper ion and the adsorption rate can reach 99.99%. The adsorption rate of chromium ion was also considerable, it was about 95%. Treating heavy metal wastewater by microorganism has a good effect, the copper and chromium ions can be absorbed thoroughly by the method and it costs little, so it has a broad application prospect.
作者
魏长浩
白汶洪
甄春燕
杨璐
刘文群
WEI Changhao BAI Wenhong ZHEN Chunyan YANG Lu LIU Wenqun(State Key Laboratory of Food Science and Technology, College of Food Science, Nanchang University, Nanchang 330047, Chin)
出处
《中国酿造》
CAS
北大核心
2016年第12期129-132,共4页
China Brewing
基金
南昌大学省级创新创业训练计划项目(201310403021)
关键词
铜、铬重金属
细菌
光合藻类
吸附
copper and chromium bacterium photosynthetic algae adsorption
