This paper presents an overview of the theoretical and practical results of the heavy metals uptake by biosorbents. The influence of different factors on the heavy metal uptake by biosorbents was documented. Biosorption and related desorption mechanism were emphasized in this paper.
This article reviews the information from the last decade in the world literature on microbial biosurfactants. Biosurfactants classification, kinetics of production and factors affecting synthesis of these compounds are described. Special emphasis is put on the natural roles played by surface active agents in the growth microorganisms which produce them. The development of biosurfactants genetics is presented and their potential commercial use is discussed.
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