Biodegradation kinetics of phenanthrene partitioned into the micellar phase of nonionic surfactants

被引:177
作者
Guha, S [1 ]
Jaffe, PR [1 ]
机构
[1] PRINCETON UNIV,DEPT CIVIL ENGN & OPERAT RES,PRINCETON,NJ 08544
关键词
D O I
10.1021/es950385z
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Surfactants above their critical micelle concentration can solubilize hydrophobic contaminants into their micelles. This process enhances the apparent solubility of contaminants such as hydrocarbons and, therefore, also their desorption from soils. Conceivably, in the absence of any inhibitory effects, such surfactants may enhance the biodegradation of the hydrocarbon. Through a set of screening experiments, a series of nonionic surfactants were identified that do not inhibit the biodegradation of phenanthrene. A mathematical model was formulated to describe the interaction of the biomass-contaminant-water-surfactant system. Assumptions that the model formulation is based on are that the phenanthrene in solution, partitioned into the micellar phase and sorbed onto the biomass and other solid surfaces,is at equilibrium and that these equilibria can be described by simple partition coefficients. It was also assumed that the presence of the surfactant does not affect the biochemical characteristics of the biomass. An effective bioavailable micellar-phase concentration of phenanthrene was defined. The model simulates experimental data well, indicating that a fraction of the micellar-phase phenanthrene is directly bioavailabie. For three of the surfactants tested (Triton N101, Triton X100, and Brij 30), the micellar-phase bioavailable fraction of phenanthrene decreased with an increasing surfactant concentration. For Brij 35, it was found that the fraction of the phenanthrene associated with the micellar phase was not directly bioavailable.
引用
收藏
页码:605 / 611
页数:7
相关论文
共 19 条
[1]   EFFECT OF SURFACTANTS AT LOW CONCENTRATIONS ON THE DESORPTION AND BIODEGRADATION OF SORBED AROMATIC-COMPOUNDS IN SOIL [J].
ARONSTEIN, BN ;
CALVILLO, YM ;
ALEXANDER, M .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1991, 25 (10) :1728-1731
[2]  
ARONSTEIN BN, 1993, APPL MICROBIOL BIOT, V39, P386, DOI 10.1007/BF00192098
[3]  
BAILEY FE, 1987, NONIONIC SURFACTANTS, V23, pCH16
[4]   SOIL CLEANUP BY SURFACTANT WASHING .1. LABORATORY RESULTS AND MATHEMATICAL-MODELING [J].
CLARKE, AN ;
PLUMB, PD ;
SUBRAMANYAN, TK ;
WILSON, DJ .
SEPARATION SCIENCE AND TECHNOLOGY, 1991, 26 (03) :301-343
[5]   SOLUBILIZATION OF POLYCYCLIC AROMATIC-HYDROCARBONS IN MICELLAR NONIONIC SURFACTANT SOLUTIONS [J].
EDWARDS, DA ;
LUTHY, RG ;
LIU, ZB .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1991, 25 (01) :127-133
[6]  
GUHA S, UNPUB BIOTECHNOL BIO
[7]  
JAHAN K, 1993, THESIS U MINNESOTA
[8]   INHIBITION OF PHENANTHRENE MINERALIZATION BY NONIONIC SURFACTANTS IN SOIL-WATER SYSTEMS [J].
LAHA, S ;
LUTHY, RG .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1991, 25 (11) :1920-1930
[9]   BIODEGRADATION OF NAPHTHALENE IN AQUEOUS NONIONIC SURFACTANT SYSTEMS [J].
LIU, ZB ;
JACOBSON, AM ;
LUTHY, RG .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1995, 61 (01) :145-151
[10]   AQUEOUS SOLUBILITY OF POLYNUCLEAR AROMATIC-HYDROCARBONS [J].
MACKAY, D ;
SHIU, WY .
JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1977, 22 (04) :399-402