Biosorption of copper by yeasts.

The ability to accumulate copper from aqueous solutions was determined with different yeast species. Yeast cells did not show any significant differences in process kinetics. The uptake was very fast and was influenced by environmental factors.

Microbial transformation of hexachlorocyclohexane.

Some microorganisms are able to accumulate and to metabolize the pesticide lindane (gamma-hexachlorocyclohexane, gamma-HCH) and other HCH-isomers. Microbial activities, detected metabolites, transformation rates, concentrating factors are reviewed. The results are discussed in respect to use microbiological processes for purification of contaminated water and soil and for recycling of waste HCH-isomers.

Kinetic studies of phenol degradation by Rhodococcus sp. P1. II. Continuous cultivation.

The degradation of phenol by Rhodococcus sp. P1 was studied in continuous culture systems. The organism could be adapted by slowly increasing concentration, step by step, up to 30.

Kinetic studies of phenol degradation by Rhodococcus sp. P1. I. Batch cultivation.

Rhodococcus sp. P1 utilizes phenol as the sole carbon and energy source via the beta-ketoadipate pathway. In batch cultivation, concentrations up to 2.

Degradation of 3-aminophenol by Arthrobacter spec. mA3.

The bacterial strain mA3 capable of utilizing 3-aminophenol as the sole source of carbon, energy and nitrogen for growth was isolated from an enrichment culture and identified as an Arthrobacter species. Utilization of 0.68 mg/ml 3-aminophenol by batch cultures of this organism was characterized by a specific growth rate (mu) of 0.