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Simple high-performance liquid chromatography-ultraviolet method to quantify the molecular size distribution of nonylphenol ethoxylates
(American Chemical Society, 2014-01-30)
Polyethoxylated nonylphenols (NPEOx) are widely used in various domestic and industrial applications. These commercial products are mixtures of oligomers that affect aquatic ecosystems, acting as endocrine disruptors. In ...
Separation of nonylphenol ethoxylates and nonylphenol by non-aqueous capillary electrophoresis
(Elsevier Science, 2006-05)
Capillary electrophoresis based on non-aqueous solvent background electrolytes was employed, with single and multiple wavelength UV detection, to evaluate discrimination among oligomer components of mixtures of non-ionic, ...
TiO2 thick films supported on stainless steel foams and their photoactivity in the nonylphenol ethoxylate mineralization
(Elsevier, 2016-01)
The main interest in employing a structured catalyst for water treatment processes is to avoid an extra recovering-step of the powder catalyst after concluding the treatment. For this purpose, TiO2 powder (Degussa P25) was ...
Bacterial community shifts in nonylphenol polyethoxylates-enriched activated sludge
(Pergamon-Elsevier Science Ltd, 2004-04)
A molecular approach was used to evaluate the effect of nonylphenol ethoxylate surfactants on the bacterial diversity in lab-scale activated sludge reactors. Separate bench-scale units were fed synthetic wastewater with ...
Medidas de tensão superficial pelo método de contagem de gotas: descrição do método e experimentos com tensoativos não-iônicos etoxiladosSurface tension measurement by drop counting method: method description and experiments with etoxilated non-ionic surfactants
(Sociedade Brasileira de Química, 2009)
Anaerobic nonylphenol ethoxylate degradation coupled to nitrate reduction in a modified biodegradability batch test
(Pergamon-Elsevier Science Ltd, 2007-08)
The aim of this work was to elucidate the role of nitrate as a terminal electron acceptor on the biodegradation of NPEO. We have characterized the products of NPEO degradation by mixed microbial communities in anaerobic ...
Multivariate optimization of pressurized solvent extraction of alkylphenols and alkylphenol ethoxylates from biosolids
(2012)
In this study, a methodology for pressurized solvent extraction of alkylphenols (APs) and alkylphenol ethoxylates (APEOs) from biosolids was optimized by utilizing a biosolid natively containing these compounds at a high ...
Studies of Endocrine Disruptors: Nonylphenol and Isomers in Biological Models
(Cartagena de IndiasCampus TecnológicoIngeniería Ambiental, 2023-04-14)
Abstract
Certain emerging pollutants are among the most widely used chemicals globally, causing widespread concern in relation to their use in products devoted to cleaniness and asepsis. Nonylphenol ethoxylate (NPEOn) is ...