Screening and Identification of a Heavy Metal Resistant Bacterium and Its Biosorption Property
DAI Jun
HUANG Zhen
XU Zhi
LI Xin
WANG Zhi
CHEN Xiong
Abstract：In order to effectively carry out bioremediation of heavy metals polluted enviroment,a Cd resistance strain DJ16 was isolated from Cd contaminated wastewater.On the basis of morphological observation,physiological and biochemical characteristics,fatty acid composition analysis and 16S rRNA gene sequence analysis,the strain DJ16 was considered to represent a strain of the Serratia.The heavy metal tolerance tests showed that the strain had the strongest tolerance to Zn2+,followed by Cd2+,and Cu2+ was the worst.The enrichment of ions showed that biosorption amounts of Cu2+ and Zn2+ first increased and then decreased with time going on,the most adsorption capacity of Cu2+ was 6.8 mg/g when the strain was cultured for 12 h,the most adsorption capacity of Zn2+ was 9.0 mg/g when the strain was cultured for 12 h.The biosorption amount of Cd2+ increased with the time going on,the most adsorption capacity of Cd2+ was 8.8 mg/g when the strain was cultured for 36 h.In summary,this strain had a great application prospect in bioremediation.
Keywords：Serratiaspecies identificationheavy metal resistancebiosorption property
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 66-70 )