[1]邹春艳,于杨格,连 宾.胶质芽孢杆菌对重金属离子Pb2+、Zn2+、Cd2+、Cu2+和Cr3+的吸附与解吸特征[J].南京师范大学学报(自然科学版),2018,41(01):68.[doi:10.3969/j.issn.1001-4616.2018.01.013]
　Zou Chunyan,Yu Yangge,Lian Bin.Adsorption and Desorption of Pb2+,Zn2+,Cd2+,Cu2+ and Cr3+by Bacillus mucilaginosus[J].Journal of Nanjing Normal University(Natural Science Edition),2018,41(01):68.[doi:10.3969/j.issn.1001-4616.2018.01.013]
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胶质芽孢杆菌对重金属离子Pb2+、Zn2+、Cd2+、Cu2+和Cr3+的吸附与解吸特征()
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《南京师范大学学报》（自然科学版）[ISSN:1001-4616/CN:32-1239/N]

卷:
第41卷
期数:
2018年01期
页码:
68
栏目:
·生命科学·
出版日期:
2018-03-31

文章信息/Info

Title:
Adsorption and Desorption of Pb2+,Zn2+,Cd2+,Cu2+ and Cr3+by Bacillus mucilaginosus
文章编号:
1001-4616(2018)01-0068-08
作者:
邹春艳1; 2; 于杨格1; 连 宾1
(1.南京师范大学生命科学学院,江苏 南京 210023)(2.贵阳市云岩区环境监测站,贵州 贵阳 550001)
Author(s):
Zou Chunyan1; 2; Yu Yangge1; Lian Bin1
(1.School of Life Sciences,Nanjing Normal University,Nanjing 210023,China)(2.Guiyang Yunyan District of Ecological Civilization Construction Bureau,Guiyang 550001,China)
关键词:
胶质芽孢杆菌; 生物吸附; 重金属; 解吸
Keywords:
Bacillus mucilaginosus; biological adsorption; heavy metals; desorption
分类号:
X753
DOI:
10.3969/j.issn.1001-4616.2018.01.013
文献标志码:
A
摘要:
采用微生物絮凝方法高效净化重金属废水并回收重金属离子以便循环利用的研究正受到业界的广泛关注. 本文研究胶质芽孢杆菌(Bacillus mucilaginosus)K02菌株制得的微生物吸附剂对重金属离子Pb2+、Zn2+、Cd2+、Cu2+和Cr3+的吸附与解吸作用. 采用原子吸收法测定不同处理条件下各重金属离子的浓度,发现该吸附剂对单一金属离子的吸附可在2 h内达到平衡,10 min即可达到吸附
Abstract:
The methods for efficient treatment of heavy metal wastewater and recovery of heavy metal ions by adopting the microbial flocculant have received extensive attention of the industry. In this paper,the microbial adsorbents produced by the culture of Bacillus mucilaginosus K02 strain were used to study the characteristics of adsorption and desorption of heavy metal ions like Pb2+,Zn2+,Cd2+,Cu2+ and Cr3+. Atomic adsorption method was used to determine the concentration of heavy metal ions under different treatment conditions. It was found that the adsorption on the single metal ion could reach equilibrium within 2 hours,and the adsorption capacity of the adsorbent could reach 60% in 10 minutes. The results also showed that the adsorption rate of microbial flocculant to the five metal ions increased by the amount of adsorbents’ increasing,and the optimum pH of adsorption was 4～7. The original concentration of ions could affect the adsorption rate greatly. For the adsorption of mixed metal ions,the adsorbent could simultaneously adsorb the five kinds of ions and show a strong selectivity to Pb2+,in which the adsorption rate can reach more than 90%. Oxalic acid,EDTA-2Na ammonium oxalate,and sodium nitrate were used to desorb the adsorbent after adsorption. It was found that oxalic acid had the best desorption effect on Cu2+ and the desorption rate was 42.238%. In addition,ammonium oxalate,EDTA-2Na has a selectivity to Pb2+ that desorption rate can reach more than 64%. The results provides basic data for the microbial adsorbents prepared by the K02 strain in the practical application of heavy metal wastewater treatment.

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相似文献/References:

[1]凌云,肖智杰,连宾,等.胶质芽孢杆菌荚膜染色方法的比较与改进[J].南京师范大学学报(自然科学版),2007,30(04):84.
　Ling Yun,Xiao Zhijie,Lian Bin.Comparison and Improvement of Seven Staining Methods Used for the Capsule of Bacillus Mucilaginosus[J].Journal of Nanjing Normal University(Natural Science Edition),2007,30(01):84.
[2]刘五星,杨启银,徐旭士,等.一株胶质芽孢杆菌的解钾能力[J].南京师范大学学报(自然科学版),2003,26(02):118.

备注/Memo

备注/Memo:
收稿日期:2017-10-26.
基金项目:中国科学院知识创新工程项目(kzcx2-yw-135-2)、江苏高校优势学科建设工程资助项目.
通讯联系人:连宾,教授,博导,研究方向:地质微生物学. E-mail:bin2368@vip.163.com. 邹春艳,于杨格为共同一作.
更新日期/Last Update: 2018-03-31