[Numerical simulation of isothermal equilibrium adsorption of virus onto typical soils in China].
An isothermal batch experiment was conducted in the laboratory to compare adsorption of bacteriophages MS2 and phiX174 onto 6 different soils (red loam soil, red clay soil, wushan soil, huangni soil, sandy fluvo-aquic soil and loamy fluvo-aquic soil) in China. Soils with sterilized or non-sterilized treatment were used. Relative coefficients of each numerical simulation of the isotherms using three models were evaluated. The results show that the properties of the soil and virus, and presence/absence of the soil autochthonous microorganisms have pronounced effect on the virus adsorption. Both MS2 and phiX174 are almost completely adsorbed by the red clay soil, but minimal adsorption is observed in the two fluvo-aquic soils. Adsorption of phiX174 to all the non-sterilized soils is generally much greater than that of MS2, while sterilization leads to opposite results. Freundlich and Langmuir isotherms are found to have better coefficients to simulate the apparent steady-state virus concentrations. Freundlich isotherm is capable of demonstrating the effect of virus concentration on adsorption behavior. Langmuir isotherms can be used to compare relative adsorption among treatments, while the present study suggests that maximum adsorption can not be calculated when using the Langmuir isotherms.
Zhang
Cong-Zhi
CZ
State Experimental Station of Agro-Ecosystem in Fengqiu, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China. czzhang@issas.ac.cn
Zhao
Bing-Zi
BZ
Zhang
Jia-Bao
JB
Zhang
Hui
H
Wang
Qiu-Ying
QY
D000327:Adsorption; D010584:Bacteriophage phi X 174 / Q000254:growth & development / Q000302:isolation & purification*; D002681:China; D007700:Kinetics; D017909:Levivirus / Q000254:growth & development / Q000302:isolation & purification*; D012987:Soil / Q000032:analysis*; D012988:Soil Microbiology; D013816:Thermodynamics
D012987:Soil