华东地质2026，Vol.47Issue(2)：238-246,9.DOI:10.16788/j.hddz.32-1865/P.2024.07.012
华北潮褐土土壤中大肠杆菌的吸附动力学特征
Adsorption kinetics of Escherichia coli in cinnamon soil of North China
摘要
Abstract
As an indicator bacterium of environmental biological contamination,Escherichia coli(E.coli)was used as the research object,and the adsorption kinetics of Escherichia coli in typical agricultural soil of North China under different factors(biochar,ionic strength,indigenous microorganisms)were studied based on four ad-sorption kinetic models.The results showed that the process of adsorption kinetics of E.coli in soil can be refined to three following stages:fast adsorption(0-20 min),slow adsorption(20-60 min)and equilibrium adsorption(80-120 min).The quasi-secondary kinetic equation was suitable for describing the adsorption kinetics of E.coli.The adsorption of E.coli by soil was heterogeneous chemisorption,and the adsorption rate of E.coli was mainly fluc-tuated by the synergistic effect of surface adsorption and intragranular diffusion mechanism.The addition of biochar and the improvement of ionic strength increased the adsorption capacity of E.coli,while the presence of indigenous microorganisms decreased the adsorption capacity of E.coli in soil.These results can provide the theo-retical basis of controlling pathway for pathogenic bacterial contamination in cinnamon soil of North China.关键词
大肠杆菌/吸附动力学/潮褐土/农业活动Key words
Escherichia coli/adsorption kinetics/cinnamon soil/agricultural activity分类
天文与地球科学引用本文复制引用
李靖雯,胡慧,张雅丽,赵福玲,郭晓明..华北潮褐土土壤中大肠杆菌的吸附动力学特征[J].华东地质,2026,47(2):238-246,9.基金项目
国家自然科学基金"畜禽粪便还田区病原细菌在地下介质界面的迁移过程及其驱动机制(编号:42177070)"项目资助. （编号:42177070）
