![]() Equilibrium batch sorption experiments showed that Triton X- 100 sorbs strongly and nonlinearly to the field soil with the sharpest inflection point of the isotherm occurring at an equilibrium aqueous Triton X- 100 concentration close to critical micelle concentration. The transport of Triton X- 100 was monitored by sampling and analysis of groundwater at six locations surrounding the injection well. In the field, a 400 mg/L aqueous Triton X- 100 solution was injected into the aquifer at a rate of 26.5 L/min for a 35-d period. In the laboratory, batch and column experiments were conducted to quantify the rate and amount of Triton X- 100 sorption to the aquifer sediments. Transport of a nonionic surfactant ( Triton X- 100) at aqueous concentrations less than 400 mg/L through a trichloroethene-contaminated sand-and-gravel aquifer at Picatinny Arsenal, NJ, has been studied through a series of laboratory and field experiments. Surfactant-enhanced remediation of a trichloroethene-contaminated aquifer. The possibility that Triton X- 100 may induce cellular lysis by releasing a lipid inhibitor of the cellular autolytic enzyme is discussed. The data presented indicate that the bacteriolytic response of growing cells to Triton X- 100: (i) was related to the ratio of surfactant to cells and not the surfactant concentration per se (ii) required the expression of the cellular autolytic enzyme system and (iii) was most likely due to an effect of the surfactant on components of the autolytic system that are associated with the cytoplasmic membrane. Lysis in response to sodium dodecyl sulfate was effective only over a limited range of concentrations, whereas Triton X- 100-induced lysis occurred over a broad range of surfactant concentrations. Lysis of exponential-phase cultures of Streptococcus faecalis ATCC 9790 was induced by exposure to both anionic (sodium dodecyl sulfate) and nonionic ( Triton X- 100) surfactants. Cellular lysis of Streptococcus faecalis induced with triton X- 100.
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