[1]杨晶,孟晓庆,张福帅.耐镉菌株对鸢尾吸附水中Cd2+的影响[J].中国给水排水,2021,37(15):57-62.
　YANG Jing,MENG Xiao-qing,ZHANG Fu-shuai.Effect of Cadmium Resistant Strains on Cadmium Ion Adsorption in Water by Iris[J].China Water & Wastewater,2021,37(15):57-62.
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耐镉菌株对鸢尾吸附水中Cd2+的影响

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第37卷 期数: 2021年第15期 页码: 57-62 栏目: 出版日期: 2021-08-01
Title:
Effect of Cadmium Resistant Strains on Cadmium Ion Adsorption in Water by Iris
作者:
杨晶1,2,3,孟晓庆4,张福帅4
(1.河北工程大学河北省水污染控制与水生态修复技术创新中心，河北邯郸056038；2.河北工程大学邯郸市水利用技术重点实验室，河北邯郸056038；3.河北工程大学能源与环境工程学院，河北邯郸056038；4.中国水利水电第十一工程局有限公司，河南郑州450000)
Author(s):
YANG Jing1，2,3,MENG Xiao-qing4,ZHANG Fu-shuai4
(1. Hebei Technology Innovation Center for Water Pollution Control and Water Ecological Remediation，Hebei University of Engineering, Handan 056038, China; 2. Handan Key Laboratory of Water Utilization Technology, Hebei University of Engineering, Handan 056038, China; 3. School of Energy and Environmental Engineering， Hebei University of Engineering， Handan 056038, China; 4. Sinohydro Bureau 11 Co. Ltd.， Zhengzhou 450000， China)
关键词:
耐镉菌株; 鸢尾; Cd2+; 吸附动力学; 红外光谱分析
Keywords:
cadmium resistant strains; iris; Cd2+; adsorption kinetics; infrared spectra analysis
摘要:
为了研究耐镉菌株对鸢尾吸附水中Cd2+的影响，选取从Cd2+污染土壤中分离、筛选出的耐镉菌株，进行水培实验。在Cd2+浓度分别为0、50、100、200 mg/L条件下，考察对照组、鸢尾、鸢尾+耐镉菌株、处理后鸢尾、处理后鸢尾+耐镉菌株对Cd2+的吸附效果。结果表明，耐镉菌株能够促进鸢尾对Cd2+的吸收，当Cd2+浓度为50 mg/L时，鸢尾+耐镉菌株对Cd2+的吸附率最高，为91.00%；添加耐镉菌株后，准二级动力学方程相关系数（R2）均大于0.99，增加了细胞壁中蛋白质C—H键和N—H键的伸缩以及碳水化合物中结合水的O—H伸展振动等，提高了鸢尾对Cd2+的吸附效果。
Abstract:
Cadmium resistant strains were isolated from cadmium ion contaminated soil and cultured by hydroponic experiment to investigate their effect on cadmium ion adsorption in water by iris. Effects of different concentrations of cadmium ion (0 mg/L, 50 mg/L, 100 mg/L and 200 mg/L) on cadmium ion adsorption performance of control group, iris, iris with cadmium resistant strains, pretreated iris and pretreated iris with cadmium resistant strains. The cadmium resistant strains could promote the adsorption of Cd2+ by iris. When Cd2+ concentration was 50 mg/L, iris with cadmium resistant strains had the highest adsorption efficiency, which was 91.00%. After adding cadmium resistant strains, correlation coefficient R2 of quasi-second-order kinetic equation was higher than 0.99. Adding cadmium resistant strains increased the stretching of C—H bond and N—H bond of proteins in the cell wall and O—H vibration of bound water in carbohydrates, so that iris could adsorb Cd2+ more efficiently.
更新日期/Last Update: 2021-08-01