Zobrazeno 1 - 10
of 111
pro vyhledávání: '"J. L. Berna"'
Autor:
K. Taeger, C.-D. Hager, J. Steber, N. Rehman, J. L. Berna, I. López, Diederik Schowanek, T. Wind, G. Cassani
Publikováno v:
Tenside Surfactants Detergents. 44:312-347
The anaerobic biodegradation of surfactants is used as an acceptability criterion in some environmental pieces of legislation (eco-label, risk assessment, etc.), without a proper evaluation of the relevance of such a characteristic. Available screeni
Autor:
I. López, Alberto Navalón, José Luis Vilchez, M. Nimer, J. L. Berna, Oscar Ballesteros, C. Verge, G. Crovetto
Publikováno v:
Analytical and Bioanalytical Chemistry. 387:2175-2184
A new sample-treatment procedure has been developed for determination of total linear alkylbenzene sulfonate (LAS), i.e. homologues and isomers, in agricultural soil. The procedure involves two steps, ultrasound-assisted extraction of LAS from the sa
Publikováno v:
Journal of Surfactants and Detergents. 6:137-142
Modern industrial sulfonation of linear alkylbenzene (LAB) in falling film reactors produces p-alkylbenzene sulfonic acid (HLAS), which is usually neutralized with caustic soda (NaOH) and used in detergent formulations. During the sulfonation process
Publikováno v:
Journal of Surfactants and Detergents. 3:353-359
Sulfonic acids of linear alkylbenzene (LAB) are converted into the corresponding sodium salts to produce the most widely used anionic surfactant worldwide, linear alkylbenzene sulfonate (LAS). Used in many industrial applications and consumer product
Publikováno v:
Water Research. 33:105-108
Water hardness plays an important role in waste water treatment processes. Calcium and/or magnesium salts of organic products are mostly precipitated due to their low solubility and they are less biodegradable than the equivalent sodium or potassium
Publikováno v:
Journal of Surfactants and Detergents. 1:263-271
Synthetic detergents have all but replaced soap in the developed countries. Laundry products in bar form, however, are still the major detergent in much of the world where manual washing predominates. This article reviews the types of laundry bars in
Publikováno v:
Tenside Surfactants Detergents. 33:441-446
Free-oil extracted in each stage of an industrial linear alkylbenzene (LAB) sulphonation plant was analyzed by HPLC. The identification of its components, mainly unsulphonated LAB, sulphones and anhydrides was achieved by IR and LC-MS. These analyses
Autor:
J. Bravo, A. Moreno, G. Nucci, C. Maraschin, G. Cassani, J. L. Berna, J. Ferrer, M. Lazzarin, L. Cavalli
Publikováno v:
Toxicological & Environmental Chemistry. 54:167-186
Two model compounds, representing the main classes of iso‐branching present in commercial LAS, have been synthesized, namely the sodium salt of the 2‐phenyl, 5‐methyl undecane sulphonic acid (iso‐LAS I) and 6‐phenyl, 6‐methyl undecane sul
Publikováno v:
Tenside Surfactants Detergents. 32:384-397
The resource requirements and environmental emissions involved in the production of n-paraffins, n-olefins, benzene, ethylene and ethylene oxide from petrochemical feedstocks are presented. The raw material requirements for the production of 1000 kg
Autor:
M. Stalmans, F. Hirsinger, C. Renta, D. Scharer, A. Dillarstone, H. Thomas, J. L. Berna, Th. Rappert, H. Berenbold, R. Van Sloten, W. Schul, K. Kosswig, M. Franke, D. Postlethwaite, D. Janzen, L. Cavalli, K.-P. Schick
Publikováno v:
Tenside Surfactants Detergents. 32:84-109