生物学杂志

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拟微绿球藻生长对4种重金属的去除效果研究

  

  1. 1. 内蒙古科技大学 能源与环境学院, 包头 014010; 2. 内蒙古科技大学 生命科学与技术学院,包头 014010; 3. 包头医学院, 包头 014010
  • 出版日期:2019-06-18 发布日期:2019-06-18
  • 通讯作者: 季祥,博士,教授,主要从事生物质能、能源微藻研究,E-mail:jixiang@imust.cn
  • 作者简介:郑坤灿,博士,教授,主要从事流动与传热机理研究,E-mail:zhengkunchan@hotmail.com
  • 基金资助:
    国家自然科学基金(41666007);内蒙古自治区科技计划项目(201601061);包头医学院科学研究基金项目(BYJJ-QM201771)

Effects of the growth of Nannochloropsis XJ006 on the removal efficiency of four heavy metals

  1. 1. School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010; 2. School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou 014010;3. Baotou Medical College, Baotou 014010, China
  • Online:2019-06-18 Published:2019-06-18

摘要: 微藻作为生物吸附剂吸附重金属元素具有环保、高效及易解吸附的优点。采用拟微绿球藻(Nannochloropsis XJ006)作为重金属吸附剂,研究了不同浓度的重金属Pb2+、Cd2+、Hg2+、As3+对拟微绿球藻生长的影响以及拟微绿球藻对不同浓度4种重金属的去除率。结果表明拟微绿球藻在Pd2+浓度0~9 mg/L、Cd2+浓度0~5 mg/L、Hg2+浓度0~0.15 mg/L、As3+浓度0~2.5 mg/L范围内可以正常生长,拟微绿球藻对Cd2+的去除率最高达88.40%, Pd2+、Hg2+为80%, As3+为40.04%。通过正交试验表明,Pb2+ 5 mg/L、Cd2+ 1 mg/L、Hg2+ 0.05 mg/L及As3+ 0.5 mg/L时,拟微绿球藻生长状况最佳。

关键词: 拟微绿球藻, 重金属去除, 重金属胁迫

Abstract: As a biosorbent adsorption of heavy metal elements, microalgae have the following advantages of environmental protection, efficient and easy to dissolve. In this paper, Nannochloropsis XJ006 was used as the heavy metal adsorbent. The effects of different concentrations of heavy metals Pb2+, Cd2+, Hg2+ and As3+ on Nannochloropsis XJ006 growth, and the removal rate of four heavy metals in different concentrations were studied. The results showed that when the Pd2+, Cd2+, Hg2+ and As3+ was at the concentration rang of 0-9 mg/L, 0-5 mg/L, 0-0.15mg/L and 0-2.5 mg/L, respectively, Nannochloropsis XJ006 can grow normally. The removal rate of Cd2+ was 88.40%, Pd2+, Hg2+ was 80% and As3+ was 40.04%. The orthogonal experiment showed that under the concentration of Pd2+ 5 mg/L, Cd2+ 1 mg/L, Hg2+ 0.05 mg/L and As3+ 0.5 mg/L, the algae grows best.

Key words: Nannochloropsis XJ006, heavy metal removal, heavy metal stress

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