Aquatic risk assessment of alcohol ethoxylates, alcohol ethoxysulphates and linear alkylbenzene sulphonate used in household detergents / D. Rasmussen in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 48, N° 5 (09-10/2011)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 48, N° 5 (09-10/2011) . - p. 383-389 Titre : Aquatic risk assessment of alcohol ethoxylates, alcohol ethoxysulphates and linear alkylbenzene sulphonate used in household detergents Type de document : texte imprimé Auteurs : D. Rasmussen, Auteur ; T. Slothuus, Auteur ; G. I. Petersen, Auteur ; T. Madsen, Auteur Année de publication : 2011 Article en page(s) : p. 383-389 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Animaux aquatiques -- Effets de la pollution de l'eau Ethoxylate d'alcool -- Toxicologie Ethoxysulfates d'alcool -- Toxicologie Evaluation du risque Plantes aquatiques -- Effets de la pollution de l'eau Risques écotoxicologiques Sulfonates d'alkylbenzène Surfactants -- Aspect de l'environnement Surfactants -- Toxicologie Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Exposure and effect assessments including risk characterisation of the surfactants alcohol ethoxylates, alcohol ethoxysulphates and linear alkylbenzene sulphonates used in household detergents were conducted. Predicted environmental concentrations were calculated by use of traditional methods and detailed transport and fate modelling. Predicted no effect concentrations were derived from the available information on the acute and chronic aquatic toxicity. Risk characterisation ratios were defined as the ratio of the predicted environmental concentration to the predicted no effect concentration. Risk characterisation ratios were calculated for fresh water and marine water and were below 1. This indicates that based on the methods employed in this study the use of alcohol ethoxylates, alcohol ethoxysulphates and linear alkylbenzene sulphonate in household detergents does not appear to present a risk to the aquatic environment. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12554 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
13302	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Aqueous scouring milk for cleaning hard surfaces with a proportion of an anionic surfactant based on calcium and magnesium salts of linear alkylbenzene acid / Klaus Henning in SOFW JOURNAL, Vol. 147, N° 10 (10/2021)  

[article]  inSOFW JOURNAL > Vol. 147, N° 10 (10/2021) . - p. 14-17 Titre : Aqueous scouring milk for cleaning hard surfaces with a proportion of an anionic surfactant based on calcium and magnesium salts of linear alkylbenzene acid Type de document : texte imprimé Auteurs : Klaus Henning, Auteur Année de publication : 2021 Article en page(s) : p. 14-17 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Abrasifs Détergents Formulation (Génie chimique) Polymères Produits nettoyants Sels de calcium Sels de magnésium Stabilité au stockage Sulfonates d'alkylbenzène Surfaces -- Nettoyage Surfactants Viscosité Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : The preparation of a storage-stable abrasive cleaning composition without dolomite as a starting material, in which no or only a very small amount of alkylbenzene acid magnesium salt (Mg-LAS) is present, is achieved by using alkoxylated fatty alcohols. Such a cleaning composition contains 1 to 15 wt.% alkylbenzene acid calcium salt (Ca-LAS) at a proportion of Mg-LAS ≤ 1% of the amount of calcium salt as well as 0.5 to 10 wt.% alkoxylated fatty alcohol. Note de contenu : - Cleaning agents with abrasive effect - Avoiding phase separation : Non-ionic surfactants - Viscosity - Abrasives - olymers - Other components - Preparation of an aqueous scouring milk for hard surfaces that is free of Mg-LAS - Explanatory notes - Table 1 : Compositions of aqueous abrasive cleaning agents - Table 2 : Storage stability test En ligne : https://drive.google.com/file/d/1IiyFVVC_X5hwuz7vnh5P_AwShcUrkIhV/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36551 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
22967	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Automated determination of linear alkylbenzene sulphonate (LAS) in wastewater treatment plants effluents using on line solid-phase extraction followed by HPLC with fluorescence detection / C. Crey-Desbiolles in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 46, N° 6/2009 (11-12/2009)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 46, N° 6/2009 (11-12/2009) . - p. 346-351 Titre : Automated determination of linear alkylbenzene sulphonate (LAS) in wastewater treatment plants effluents using on line solid-phase extraction followed by HPLC with fluorescence detection Type de document : texte imprimé Auteurs : C. Crey-Desbiolles, Auteur ; S. Cavalli, Auteur ; S. Polesello, Auteur ; S. Valsecchi, Auteur Année de publication : 2009 Article en page(s) : p. 346-351 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chromatographie en phase liquide à hautes performances Eaux usées -- Epuration Extraction (chimie) Sulfonates d'alkylbenzène Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : An on line SPE (solid-phase extraction) method followed by HPLC with fluorescence detection has been developed and validated for determining the LAS in inlet and outlet effluents of wastewaters treatment plants. Filtered effluent samples were on line concentrated on a small polymeric reversed phase column, then the trapped LAS are separated on a specialty polar-embedded reversed-phase column and detected by a fluorimeter. The on line SPE method with fluorescence detection showed very good repeatability (from 1.5 to 11.7 % depending on the sample loading volume) and robustness with detection limits of 1.5 µg l-1 for total C10-13 LAS loading a 5 ml sample volume. This automated method is a cost-effective way to determine LAS also in routine monitoring of inlets and outlets of wastewater treatment plants allowing to optimize treatment procedures. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6808 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
011757	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Evaluation of Physico-Chemical interactions between linear alkylbenzene sulfonate (LAS) and alcohol ethoxylates / F. B. Malihi in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 48, N° 5 (09-10/2011)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 48, N° 5 (09-10/2011) . - p. 395-399 Titre : Evaluation of Physico-Chemical interactions between linear alkylbenzene sulfonate (LAS) and alcohol ethoxylates Type de document : texte imprimé Auteurs : F. B. Malihi, Auteur ; A. Khaani, Auteur ; N. Changizi, Auteur ; B. Adeeb, Auteur Année de publication : 2011 Article en page(s) : p. 395-399 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dynamique moléculaire Ethoxylate d'alcool Sulfonates d'alkylbenzène Surfactants Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Linear alkylbenzene sulfonate (LAS) is the most widely used surfactant in household products. The dominance of LAS is particularly apparent in laundry detergents, dishwashing liquids, household cleaners, and institutional/industrial cleaners, where it accounts for over 3 million tons per year worldwide consumption. However, detergency performance of LAS is decreased in hard water due to lower solubility and surfactant loss in the presence of calcium and magnesium ions. In this study behavior of an aqueous binary surfactant mixture composed LAS and nonionic surfactants was investigated. Ethoxylated alcohols (C12– C14) with 7 EO and 2 EO units were mixed with LAS in laundry detergent formulations, and performance factors including detergency, solubility, and efficiency and effectiveness of surface tension reduction were examined. Analysis of surface tension data indicated strong molecular interaction between LAS and nonionic surfactant. The results indicated that the addition of low amounts of the nonionic surfactant lowers significantly CMC of the mixed surfactant system, and causes the formation of mixed micelles containing predominantly nonionic molecules which provide water hardness protection for LAS. The overall improvement in detergency appears to be due to: lower CMC of the mixed surfactant system which improves soil solubilization, solubilization of Ca(LAS)2, and reduction of free calcium ions which frees up soluble LAS in solution to adsorb at fabric-soil interfaces for enhanced soil removal. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12562 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
13302	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Olefins Derived from Vegetable Oils and their Utilization in Preparation of Surface Active Agent in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 46, N° 4/2009 (07-8/2009)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 46, N° 4/2009 (07-8/2009) . - p. 232-244 Titre : Olefins Derived from Vegetable Oils and their Utilization in Preparation of Surface Active Agent Type de document : texte imprimé Année de publication : 2009 Article en page(s) : p. 232-244 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acides gras Alcènes Esters méthyliques Huiles et graisses végétales Sulfonates d'alkylbenzène Surfactants Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : As our fossil raw materials are irrevocably decreasing and as the pressure on our environment is building up, the progressive changeover of chemical industry to renewable feedstocks for their raw materials emerges as an inevitable necessity i.e. it will have to proceed increasingly to the raw materials basis that prevailed before natural gas and oil out paced all other sources. Therefore, the use of renewable resources is an important component of green chemistry. Oils and fats are the most important renewable raw materials for the chemical industry. In the present study, cracking of vegetable oil was carried out to obtain olefins. Olefins are the largest volume chemical intermediates produced in the chemical industry, which is one of major raw material for surfactants manufacturing. The olefins obtained from cracking are utilized to prepare surfactant by alkylation with cumene and subsequently sulfonation and neutralization to obtained alkyl cumene sulfonates (ACS). The evaluation of surface active properties of ACS and comparison of the property with conventional surfactants was carried out and ACS exhibit excellent surface active properties. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6057 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
011484	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Préparation avant métallisation par voie chimique / Sandrine Dalbin in GALVANO ORGANO, N° 786 (09/2009)

Permalink

Surfactants in sediments / L. Cavalli in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 37, N° 5/2000 (09-10/2000)

Permalink

Synthesis and application of the cationic lignin amine flocculant / Y. Jiao in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 47, N° 6/2010 (11-12/2010)

Permalink

Ultimate biodegradation of commercial linear alkylbenzene sulphonates (LASunder ISO 14593 headspace CO2 test : compliance with EU detergent regulation 648/2004 in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 48, N° 5 (09-10/2011)

Permalink

---

1 (1 - 9 / 9)