RT Journal Article
T1 Involvement of Crawling and Attached Ciliates in the Aggregation of Particles in Wastewater Treatment Plants
A1 Arregui García-Rovés, Lucía
A1 Linares Gómez, María
A1 Pérez Uz, María Blanca
A1 Guinea Díaz, Almudena
A1 Serrano Barrero, Susana Lourdes
AB The biological community in activated sludge wastewater plants is organized within this ecosystem as bioaggregates or flocs, in which the biotic component is embedded in a complex matrix comprised of extracellular polymeric substances mainly of microbial origin. The aim of this work is to study the role of different floc-associated ciliates commonly reported in wastewater treatment plants-crawling Euplotes and sessile Vorticella- in the formation of aggregates. Flocs, in experiments with ciliates and latex beads, showed more compactation and cohesion among particles than those in the absence of ciliates. Ciliates have been shown to contribute to floc formation through different mechanisms such as the active secretion of polymeric substances (extrusomes), their biological activities (movement and feeding strategies), or the cysts formation capacity of some species. Staining with lectins coupled to fluorescein showed that carbohydrate of the matrix contained glucose, manose, N-acetyl-glucosamine and galactose. Protein fraction revealed over the latex beads surfaces could probably be of bacterial origin, but nucleic acids represented an important fraction of the extracellular polymeric substances of ciliate origin.
SN 1178-6221
YR 2008
FD 2008-01
LK https://hdl.handle.net/20.500.14352/99138
UL https://hdl.handle.net/20.500.14352/99138
LA eng
NO Arregui L, Linares M, Pέrez-Uz B, Guinea A, Serrano S. Involvement of Crawling and Attached Ciliates in the Aggregation of Particles in Wastewater Treatment Plants. Air, Soil and Water Research 2008; 1: ASWR.S752. [DOI: 10.4137/ASWR.S752]
NO Ministerio de Ciencia y Tecnología (España)
NO Universidad Complutense de Madrid
DS Docta Complutense
RD 16 abr 2025