BACTERIA TRANSPORT IN A POROUS-MEDIUM - RETENTION OF BACILLUS AND PSEUDOMONAS ON SILICA SURFACES

被引:54
作者
KINOSHITA, T
BALES, RC
YAHYA, MT
GERBA, CP
机构
[1] UNIV ARIZONA,DEPT HYDROL & WATER RESOURCES,TUCSON,AZ 85721
[2] UNIV ARIZONA,DEPT SOIL & WATER SCI,TUCSON,AZ 85721
[3] UNIV ARIZONA,DEPT MICROBIOL & IMMUNOL,TUCSON,AZ 85721
关键词
BACTERIA; BACTERIA TRANSPORT; BIOCOLLOID; FILTRATION; COLLOID TRANSPORT; GROUNDWATER; SOIL; COLUMN EXPERIMENTS;
D O I
10.1016/0043-1354(93)90216-5
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Pseudomonas fluorescens and Bacillus subtilis transport was studied in water flowing through laboratory columns packed with 0.5-mm silica beads. The rate of bacterial attachment to the silica was shown to reach steady state after about one pore volume of bacteria-containing solution had passed through the column. Column-outlet concentrations were 6-80% of inlet concentrations. There was less P. fluorescens retardation at pH 5.5 versus 7.0; since the pH(iep)s (isoelectric point) for both bacteria are at lower pHs, this difference indicates that the change in electrostatic repulsion over this pH range was relatively unimportant in determining bacteria retention in the porous medium. Transport of both species was highly retarded, suggesting that neither could be quickly transported over long distances in sandy soils. Results were adequately described using a steady-state transport model with bacterial attachment to soil as a pseudo-first-order process. Sticking efficiency (alpha), calculated using the steady-state colloid-filtration model, was near one. The continued appearance of bacteria in the column effluent for several pore volumes after switching to a bacteria-free inlet solution shows attachment to be reversible, though slowly reversible.
引用
收藏
页码:1295 / 1301
页数:7
相关论文
共 19 条
[1]  
[Anonymous], 1985, STANDARD METHODS EXA
[2]   BACTERIOPHAGE ADSORPTION DURING TRANSPORT THROUGH POROUS-MEDIA - CHEMICAL PERTURBATIONS AND REVERSIBILITY [J].
BALES, RC ;
HINKLE, SR ;
KROEGER, TW ;
STOCKING, K ;
GERBA, CP .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1991, 25 (12) :2088-2095
[3]  
BALES RC, 1984, SURFACE CHEM PHYSICA
[4]  
BALES RC, 1993, IN PRESS WAT RESOUR
[5]   USE OF COLLOID FILTRATION THEORY IN MODELING MOVEMENT OF BACTERIA THROUGH A CONTAMINATED SANDY AQUIFER [J].
BOUWER, EJ ;
RITTMANN, BE .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1992, 26 (02) :400-401
[6]   HYDROPHOBIC CHARACTERISTICS OF BACILLUS SPORES [J].
DOYLE, RJ ;
NEDJATHAIEM, F ;
SINGH, JS .
CURRENT MICROBIOLOGY, 1984, 10 (06) :329-332
[7]   PHYSICAL AND CHEMICAL FACTORS INFLUENCING TRANSPORT OF MICROORGANISMS THROUGH POROUS-MEDIA [J].
FONTES, DE ;
MILLS, AL ;
HORNBERGER, GM ;
HERMAN, JS .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1991, 57 (09) :2473-2481
[8]   Bellerophon: a program to detect chimeric sequences in multiple sequence alignments [J].
Huber, T ;
Faulkner, G ;
Hugenholtz, P .
BIOINFORMATICS, 2004, 20 (14) :2317-2319
[9]   USE OF COLLOID FILTRATION THEORY IN MODELING MOVEMENT OF BACTERIA THROUGH A CONTAMINATED SANDY AQUIFER [J].
HARVEY, RW ;
GARABEDIAN, SP .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1991, 25 (01) :178-185
[10]  
LYKELMA H, 1976, PURE APPL CHEM, V48, P449