Bull. Environ. Contam. Toxicol. (1999) 63:94-100 © 1999 Springer-Verlag New York Inc. Linear Alkylbenzene Sulphonates: Biodegradability and lsomeric Composition J. A. Perales, M. A. Manzano, D. Sales, J. M. Quiroga Department of Chemical Engineering, Food Technology and Environmental Technology, Faculty of Sea Sciences, University of Cádiz, Polygon Rio San Pedro s/n, 11510 Puerto Real, Cádiz, Spain Received: 26 November 1998/Accepted: 4 May 1999 Although on a global level, soap is still used more than surfactants, the wide variety of processes in which surfactants are incorporated has resulted in a spectacular increase in their consumption, which has grown from about 13·10 tons in 1977 to 18·10 tons in 1995 (Granados 1996). Of this total, some 1.5 million tons correspond to linear alkylbenzene sulphonates (LAS), which means that this is the world’s leading type of surfactant in terms of consumption volume. LAS (Figure 1) are sold in the form of a mixture of homologues in which the length of the alkyl chain varies between 10 and 14 carbon atoms (C10-LAS to C14-LAS). The proportions of these five homologues in the various commercial formulations depend on the specific application of the detergent product. Each homologue in turn presents a set of isomers
Bulletin of Environmental Contamination and Toxicology – Springer Journals
Published: Jul 1, 1999
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