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 15):57-62.
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Effect of Cadmium Resistant Strains on Cadmium Ion Adsorption in Water by Iris

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第37卷 Number: 15 15 Page: 57-62 Column: Date of publication: 2021-08-01
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)
Keywords:
cadmium resistant strains; iris; Cd2+; adsorption kinetics; infrared spectra analysis
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.
Last Update: 2021-08-01