摘要
以莱茵衣藻为研究对象,采用批量试验研究了莱茵衣藻对纳米氧化铜的吸附过程及其对自由金属离子溶出的影响。试验结果表明,莱茵衣藻对纳米氧化铜具有较强的吸附能力,吸附遵循Langmuir和Freundlich等温线模型和准二次动力学模型,最大吸附量为128μg/10^6个藻细胞。莱茵衣藻的存在对自由金属离子溶出具有显著影响,低浓度的莱茵衣藻促进Cu^2+溶出,高浓度的莱茵衣藻抑制Cu^2+溶出。
The adsorption process of Chlamydomonas reinhardtii to copper oxide nanoparticles(CuO-NPs)and its effect on free metal ion release were studied by batch experiments.The results show that Chlamydomonas reinhardtii has a strong adsorption capacity for CuO-NPs.The adsorption follows the Langmuir and Freundlich isotherm model and the quasi secondary kinetic model.The maximum adsorption capacity of is 128μg per 10^6 algal cell.The existence of Chlamydomonas reinhardtii has a significant effect on the release of free metal ions.The low concentration of Chlamydomonas reinhardtii promotes the release of Cu^2+,while the high concentration of Chlamydomonas reinhardtii inhibits the release of Cu^2+.
作者
崔晓倩
陈国栋
郑昊
李晓晨
CUI Xiaoqian;CHEN Guodong;ZHENG Hao;LI Xiaochen(Linyi Shouchuangborui water Water Services Co.,Ltd.,Linyi 276021,China;College of Water Conservancy and Civil Engineering,Shandong Agricultural University,Tai’an 271018,China;Linyi Shouchuang Environmental Protection Development Co.,Ltd.,Linyi 276002,China)
出处
《水资源保护》
CAS
CSCD
北大核心
2020年第6期117-121,130,共6页
Water Resources Protection
基金
国家自然科学基金(41771502)
山东省水利科技促进项目(SDSLKY201605)。
关键词
莱茵衣藻
纳米氧化铜
Cu^2+离子
吸附
溶出
水环境
Chlamydomonas reinhardtii
copper oxide nanoparticles
Cu^2+
adsorption
release
water environment
