Temat: Ionic - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Analiza wydajnościowa platformy Ionic 2
Efficiency analysis of the Ionic 2 platform
Autorzy:: Pyć, Robert
Plechawska-Wójcik, Małgorzata
Powiązania:: https://bibliotekanauki.pl/articles/98354.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Lubelska. Instytut Informatyki
Tematy:: aplikacja hybrydowa
Ionic
Ionic 2
Android
wydajność frameworka
hybrid application
Ionic 2 Android
efficiency of framework
Opis:: W artykule przedstawiono analizę wydajnościową platformy Ionic 2. Poddano analizie dwie aplikacje jedna napisaną w języku natywnym Android, czyli w Javie, druga napisano z pomocą frameworka Ionic 2. Do analizy frameworka wybrano następujące kryteria: czas renderowania różnych rodzajów multimediów. płynność działania, zużycie zasobów oraz działanie aplikacji przy obciążonym systemie. Przeprowadzone badania dowiodły iż framework działa znacznie wolniej od aplikacji napisanej w natywnym framework’u Androida.
The paper presents efficiency analysis of the Ionic 2 platform. Two test applications were analysed, one written in the native Android language, Java, and the second written using the Ionic 2 framework. The following criteria were selected for the framework analysis: rendering time of various media types, fluidity, resource consumption and application working while system load. The study has shown that the framework works much slower than an application written in native Android language.
Źródło:: Journal of Computer Sciences Institute; 2018, 7; 162-167
2544-0764
Pojawia się w:: Journal of Computer Sciences Institute
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Wetting processes in supported ionic liquid membranes technology
Autorzy:: Cichowska-Kopczynska, I.
Joskowska, M.
Aranowski, R.
Powiązania:: https://bibliotekanauki.pl/articles/110341.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: ionic liquid
supported ionic liquid membrane
contact angle
wettability
swelling
Opis:: Ionic liquids are widely used in supported ionic liquid membranes technology, especially in gas separation and purification processes. This work characterizes the ability of ionic liquids to wet commercially available porous supports used for such purposes. Characterization of supports and membrane phases was carried out in order to determine factors influencing wetting process. Experimental method based on capillary rise is widely used for porous media characterization (i.e. pore radius, contact angle). Measurements of penetration distance or liquid mass are two main experimental methods, in which the Washburn equation is a basic instrument to analyze the obtained results. However, polymeric porous supports do not meet Washburn assumptions and the method is loaded with human errors, so the sessile drop method was used. The rate of wetting influences swelling effects and therefore changes in permeation path during gas separation processes are observed. Influence of ionic liquids structure on wetting and swelling of porous supports was investigated. The families of 1-alkyl-3-methylimidazolium (Cnmim), ammonium (Nnnnn), 1-alkyl-1-methylpyrrolidinium (CnPyrr) and 1-alkylpyridinium (CnPy) compounds with variable alkyl chain lengths in cation structures and changeable anions were taken into account in wetting and swelling experiments.
Źródło:: Physicochemical Problems of Mineral Processing; 2014, 50, 1; 373-386
1643-1049
2084-4735
Pojawia się w:: Physicochemical Problems of Mineral Processing
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Aminokwasowe ciecze jonowe
Amino acid ionic liquids
Autorzy:: Samaszko-Fiertek, Justyna
Sowińska, Kamila
Dmochowska, Barbara
Ślusarz, Rafał
Madaj, Janusz
Powiązania:: https://bibliotekanauki.pl/articles/972296.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Chemiczne
Tematy:: ciecze jonowe
cholinowe ciecze jonowe
aminokwasowe ciecze jonowe
ionic liquids
choline ionic liquids
amino acid ionic liquids
Opis:: Ionic liquids (IL) are defined as compounds consisting only of ions with a melting point below 100°C. [1,2,4]. The first obtained ionic liquid was ethylammonium nitrate synthesized in 1914 by Paul Walden as a result of the protonation of ethylamine with nitric acid [4]. New group of IL are amino acid ionic liquids. They are non-toxic and bio- renewable ionic liquids of natural origin. The amino acids contain at least two functional groups, an amino group and a carboxyl group, which makes them both cationic and anionic in the amino acid ionic liquid. Amino acid ionic liquids attract more and more attention in the field of catalysis, as solvents in chemical transformations and cellulose solvents due to low production costs and their biodegradable. Compounds based on imidazolium, phosphonium, ammonium and choline ionic liquids found a wide application in biological sciences, modern chemistry and materials science [10]. One of their biggest advantages is the ability to absorb CO₂ (especially their amino acid derivatives), which increases the chance of eliminating carbon dioxide from the environment. Amino acid ionic liquids have also found application in the field of catalysis.
Źródło:: Wiadomości Chemiczne; 2019, 73, 11-12; 737-751
0043-5104
2300-0295
Pojawia się w:: Wiadomości Chemiczne
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Influence of Ionic Liquids on growth of Escherichia coli strain possessing β-galactosidase activity
Autorzy:: Stobińska, M.
Urbański, D.
Bartkowiak, A.
Powiązania:: https://bibliotekanauki.pl/articles/115739.pdf
Data publikacji:: 2013
Wydawca:: Fundacja na Rzecz Młodych Naukowców
Tematy:: ionic liquids
β-galactosidase
toxicity
Opis:: Ionic liquids (ILs) have gained a significant attention as alternative solvents in many chemical and biological reactions. ILs have evolved as a new type of non-aqueous solvents for biocatalysis, because they can stabilize and activate enzymes. Ionic liquids to be considered as so called “green solvents” should possess only very low or no toxicity to living organism and the environment. Currently, very little is known about the biotoxicity of ionic liquids. Within this paper a relative toxicity of two ionic liquids 1,3 dimethylimidazolium methyl sulfate [MMIM][MeSO4] and 1-hexyl-3-methylimidazolium chloride [HMIM][Cl]) on the growth of Escherichia coli (E.coli) was evaluated. In this study we focused on ionic liquids, which potentially could increase activity of β-galactosidase produced by selected strain of E. coli. The inhibition of cell growth in the presence of various ionic liquids was determined using both, solid and liquid cultures. Liquid culture was incubated in culture medium with different concentrations of ionic liquids (0.1, 1, 5, 10% (v/v)). Determination of the minimal inhibitory concentration (MIC50) of ionic liquids was based on monitoring of E. coli growth by optical density measured at 600 nm using densitometer. In the second method the solid culture plate with addition of various amount of ILs has been used. The number of colonies formed on the solid culture plate was converted to colony forming units (CFUs). The obtained results have confirmed, that prescreening based on cytotoxicity tests is a key element in selection procedure of ILs for any biotechnological processes based on application of microorganisms.
Źródło:: Challenges of Modern Technology; 2013, 4, 1; 38-40
2082-2863
2353-4419
Pojawia się w:: Challenges of Modern Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The influence of selected ionic liquids on activity of chitin deacetylase
Autorzy:: Aspras, I.
Kamińska, M.
Karzyński, K.
Kawka, M.
Jaworska, M. M.
Powiązania:: https://bibliotekanauki.pl/articles/185154.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: chitin deacetylase
enzyme activity
imidasolium ionic liquids
pyridinium ionic liquids
aktywność enzymu
ciecze jonowe
Opis:: Chitin deacetylase is the only known enzyme which is able to deacetylate N-acetyl-D-glucosamine units in chitin or chitosan chains. As chitin can hardly be dissolved in organic/inorganic solvents, new solvents are still searched. Ionic liquids are promising for that application and for homophase enzymatic deacetylation. The aim of the work was to investigate the influence of selected ionic liquids on activity of chitin deacetylase. It has been shown that [Amim] ionic liquids increase the activity of chitin deacetylase. The highest activity was observed for [Amim][Cl]. Ionic liquids with shorter (ethyl (C2)) and longer side chain (buthyl (C4)) only insignificantly influenced the activity of the enzyme. All tested ionic liquids with [Br] anion increased the activity of chitin deacetylase while the [Emim] and [Bmim] cation in combination with [Cl] anion inhibited the activity of the enzyme.
Źródło:: Chemical and Process Engineering; 2016, 37, 1; 77-82
0208-6425
2300-1925
Pojawia się w:: Chemical and Process Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Synthesis of HMX via Nitrolysis of DPT Catalyzed by Acidic Ionic Liquids
Autorzy:: He, Z.
Luo, J.
Lu, Ch.
Xu, R.
Li, J.
Powiązania:: https://bibliotekanauki.pl/articles/358495.pdf
Data publikacji:: 2011
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:: DPT
HMX
nitrolysis
ionic liquid
Opis:: The direct nitrolysis of DPT to synthesize HMX with ionic liquids (ILs) as catalysts was investigated. The results showed that [Et3NH] HSO4 was the best catalyst among 18 ILs used and the yield of HMX was up to 61% against 45% without IL. The ILs could be effciently recovered by simple distillation and extraction after reaction without any apparent loss of catalytic activity even after 10 times recycling.
Źródło:: Central European Journal of Energetic Materials; 2011, 8, 2; 83-91
1733-7178
Pojawia się w:: Central European Journal of Energetic Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: The effect of ionic liquids with the tetrafluoroborate anion on terrestrial plants
Autorzy:: Biczak, R.
Pawłowska, B.
Tomczuk, K.
Feder-Kubis, J.
Powiązania:: https://bibliotekanauki.pl/articles/207364.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: ionic liquids
tetrafluoroborate
ciecz jonowa
tetrafluoroboran
Opis:: Ionic liquids have attracted considerable interest as excellent alternatives to organic solvents to be used in homogeneous and biphasic processes. Ionic liquids are non-volatile, non-flammable and their “green” character has usually been justified with their negligible vapour pressure. However, the marketing of any chemical substance requires the determination of their impact on all elements of nature. Determination of the potential ecotoxicity of new chemical compounds is associated with conducting research on the effects of those compounds on the growth and development of selected organism. The phytotoxic properties of chiral ionic salts with the alkylimidazolium cation and the tetrafluoroborate anion were assessed for selected weeds popular in Poland: gallant soldier (Galinsoga parviflora Cav.), white goosefoot (Chenopodium album L.) and common sorrel (Rumex acetosa L.). It was found that 3-alkyl-1-[(1R,2S,5R)-(–)-menthoxymethyl]imidazolium tetrafluoroborates – ([C₈-Im-Men][BF₄]) and ([C₉-Im-Men][BF₄]) were low toxic to plants. A higher toxicity to terrestrial plants was characterized by ([C₁₁-Im-Men][BF₄]). The toxicity effect of compounds depended non only on the length of the alkyl chain in the function group but also on the concentration of the used compound and the type of plant which was sprayed with the tested compound.
Źródło:: Environment Protection Engineering; 2017, 43, 2; 41-52
0324-8828
Pojawia się w:: Environment Protection Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Ecotoxicity of ionic liquids as lubricants
Autorzy:: Kałdoński, T. J.
Kałdoński, T.
Załęska-Radziwiłł, M.
Pawlak, Z.
Powiązania:: https://bibliotekanauki.pl/articles/244323.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: ionic liquids
ecotoxicity tests
Daphnia Magna
Opis:: In this article there is discussed the influence of ionic liquids on natural environment on the basis of detailed analysis of the literature information and the results of the Authors' researches carried out within the framework of the development and research project no. PBR/15-249/2007/WAT-OR00002904 financed by Ministry of Science and Higher Education during 2007-2011. The literature information about toxic features of ionic liquids is very skimpy, but the detailed analysis of it and the results of our own researches allow us to say that not all ionic liquids should be treated as fully environmentally friendly substances. Among these substances, there are non-toxic and moderately toxic but there are very toxic liquids, too. Therefore, uncritical rating all ionic liquids among Green Chemistry is inappropriate. The test results of ionic liquids ecotoxicity were compared with the results obtained for standard oils used at lubrication technologies, particularly at motorization. All reference oils, according to EU classification, were non-toxic. The tests were carried out in accordance with OECD 202 European normative document, which recommends carrying out the tests for Daphnia Magna crustaceans. There were carried out: acute immobilization tests to Daphnia Magna, calculation of the effective concentrations EC50-t and evaluation of ionic and reference liquids toxicity with regard to used bioindicators
Źródło:: Journal of KONES; 2015, 22, 1; 135-142
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Identifying of thermotropic liquid crystal phase and its influence on lubricity of ionic liquids
Autorzy:: Kałdoński, T. J.
Piecek, W.
Kałdoński, T.
Pawlak, Z.
Powiązania:: https://bibliotekanauki.pl/articles/244373.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: mesophase identification
liquid crystals
ionic liquids
Opis:: In this article there is discussed a possibility of forming the liquid crystal structure in ionic liquids and its influence on performance characteristics, especially tribological, of these liquids. Formation of such thermal phase might influence on, among other things, easier creation of the boundary lubricating film, which is characterized by high viscous anisotropy. The results of tribological tests showed better lubricity of selected ionic liquids than modern PFPE oils. Identification of mesophase in ionic liquids was necessary. This method is described in the paper. Biolar PL polarizing interference microscope with thermal stabilizing table, with birefraction system, and Brüker Discover 8 powder diffraction instrument with a Cu lamp and monochromator were used. There was being searched the state characterized simultaneously by optical anisotropy properties and liquid state of aggregation. For identification of phase transition temperature, the additional calorimetric tests were carried out during the cycle of heating and cooling. These researches were carried out within the framework of the development and research project no. PBR 15-249/2007/WAT-OR0002904, financed by Ministry of Science and Higher Education during 2007-2011.
Źródło:: Journal of KONES; 2015, 22, 1; 143-156
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: The mechanism study on aryl-substituted aromatic acid ionic liquid as the collector for quartz flotation
Autorzy:: Li, Haonan
Mei, Guangjun
Yu, Mingming
Cheng, Qian
Zhu, Guobin
Powiązania:: https://bibliotekanauki.pl/articles/109922.pdf
Data publikacji:: 2019
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: ionic liquid
flotation collector
quartz
magnetite
Opis:: An aryl-substituted aromatic acid ionic liquid (M-X) was synthesized through hexadecyl trimethyl ammonium bromide and sodium salicylate, and it was employed as a flotation collector for the separation of quartz from magnetite. Laboratory flotation studies of magnetite and quartz were conducted using the M-X and dodecylamine (DDA) as collector. The results showed that the M-X has a stronger collecting ability and selectivity for quartz without starch. The adsorption mechanism of M-X on quartz and magnetite surfaces was studied by Fourier transform infrared spectroscopy (FTIR), zeta potential and X-ray photoelectron spectroscopy (XPS) analysis. Results indicated that the adsorption of M-X on the quartz surface was more efficient than that on the magnetite surface. And the salicylate anion in M-X was found to have depression effect to magnetite.
Źródło:: Physicochemical Problems of Mineral Processing; 2019, 55, 5; 1239-1249
1643-1049
2084-4735
Pojawia się w:: Physicochemical Problems of Mineral Processing
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: O cieczach jonowych „w pigułce” (historia, właściwości i rozwój)
Ionic liquids „in a nutshell” (history, properties and development)
Autorzy:: Pernak, J.
Rzemieniecki, T.
Materna, K.
Powiązania:: https://bibliotekanauki.pl/articles/1215325.pdf
Data publikacji:: 2016
Wydawca:: Stowarzyszenie Inżynierów i Techników Przemysłu Chemicznego. Zakład Wydawniczy CHEMPRESS-SITPChem
Tematy:: ciecze jonowe
generacje cieczy jonowych
aktywność biologiczna
ionic liquids
generations of ionic liquids
biological activity
Opis:: Opisano najważniejsze zagadnienia związane z historią cieczy jonowych, ich nazewnictwem oraz właściwościami. Przedstawiono rodzaje cieczy jonowych, z uwzględnieniem kryteriów podziału, które pozwalają na analizę ewolucji tych związków na przestrzeni minionych dwudziestu lat.
The most important issues related to the history of ionic liquids, their nomenclature and properties have been described. The types of ionic liquids, including criteria for the distribution, which allow the analysis of the evolution of these compounds over the past twenty years have been presented.
Źródło:: Chemik; 2016, 70, 9; 471-480
0009-2886
Pojawia się w:: Chemik
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Formation of Br2 '-, BrSCN'- and (SCN)2'-intermediates in the ionic liquid methyltributylammonium bis[(trifluoromethyl)sulfonyl]imide. Pulse radiolysis study
Autorzy:: Grodkowski, J.
Nyga, M.
Mirkowski, J.
Powiązania:: https://bibliotekanauki.pl/articles/147848.pdf
Data publikacji:: 2005
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: ionic liquids
pulse radiolysis
Br2
Opis:: The reactions of Br2 '- anion radicals with thiocyanate anions in the ionic liquid methyltributylammonium bis[(trifluoromethyl)sulfonyl]imide (R4NNTf2) were studied by pulse radiolysis. Reaction of solvated electrons with BrCH2CH2Br (DBE), k = (1 2)×108 L.mol 1.s 1, leads to the production of Br2'- anion radicals. The intermediate absorption spectra following pulse radiolysis of DBE/SCN-/Br-/ solutions in R4NNTf2 correspond to Br2 '-, BrSCNo- and (SCN)2'- anion radicals. The participation of these radicals in the spectra changes with progressing reactions and depends on the concentration Br- and SCN- in the solution.
Źródło:: Nukleonika; 2005, 50,suppl.2; 35-38
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Heterocoagulation of hydrophobized particulates by ionic surfactants
Autorzy:: Çelik, M.
Ozdemir, O.
Powiązania:: https://bibliotekanauki.pl/articles/110782.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: heterocoagulation
coal
flotation
adsorption
ionic surfactants
Opis:: Hydrophobic particulates, i.e. bubbles, precipitates, and coal particles are shown to exhibit similar isoelectric point (iep) values in the presence of ionic surfactants. While coal in anionic surfactant solutions exhibits negative zeta potentials in the entire pH region, coal in cationic surfactant solutions undergoes a charge reversal in alkaline pH. Adsorption and zeta potential measurements together with previously published results indicate that ionic surfactants adsorb on coal through hydrophobic bonding driven by entropy. Physicochemical similarities in the adsorption mechanisms of ionic surfactants onto the bubbles, precipitates, and coal particles are proposed to be responsible for the observed iep values and also heterocoagulation phenomena.
Źródło:: Physicochemical Problems of Mineral Processing; 2018, 54, 1; 124-130
1643-1049
2084-4735
Pojawia się w:: Physicochemical Problems of Mineral Processing
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Badanie powierzchniowych zanieczyszczeń jonowych występujących na płytkach obwodów drukowanych
Ionic contamination tests on printed circuit boards
Autorzy:: Bacior, M.
Siewiorek, A.
Kudyba, A.
Sobczak, N.
Powiązania:: https://bibliotekanauki.pl/articles/391432.pdf
Data publikacji:: 2013
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Odlewnictwa
Tematy:: zanieczyszczenia jonowe
płytki PCB
ionic contamination
PCB
Opis:: W pracy przedstawiono wyniki badań wpływu rodzaju pokrycia płytek obwodowych drukowanych PCB na ilość występujących na ich powierzchni zanieczyszczeń jonowych. Badania wykonano w temperaturze pokojowej na płytkach PCB z trzema rodzajami pokrycia: HASL LF - bezołowiowe, ENIG, OSP - pokrycie organiczne.
The paper presents the results of the effect of coating type on the amount of ionic contaminants present on printed circuit boards. The study was performed at the RT on the PCB with three types of coatings: HASL LF - lead-free, ENIG, OSP – organic coating.
Źródło:: Prace Instytutu Odlewnictwa; 2013, 53, 1; 13-25
1899-2439
Pojawia się w:: Prace Instytutu Odlewnictwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Biodegradation of alkyl ethoxylates and alkylphenol ethoxylates in river water in a static die-away test as studied by HPLC-ESI/MS
Autorzy:: Zembrzuska, J.
Frańska, M.
Schroeder, G.
Frański, R.
Powiązania:: https://bibliotekanauki.pl/articles/347027.pdf
Data publikacji:: 2010
Wydawca:: Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydział Technologii i Inżynierii Chemicznej
Tematy:: non-ionic surfactants
biodegradation
HPLC-ESI-MS
Opis:: Biodegradation of nonylphenol ethoxylates and dodecyl ethoxylates (C9H19-C6H4- (OCH2CH2)n-OH and C12H25-(OCH2CH2)n-OH, respectively) in river water in a static die-away test was analyzed by using high performance liquid chromatography with mass spectrometric detection using the Applied Biosystems quadrupole-linear ion trap mass spectrometer Model 4000 QTrap. Surfactants containing 2-4 ethoxylene units may be regarded as persistent metabolites of longer surfactants. Homologues C9H19-C6H4- (OCH2CH2)5-OH and C12H25-(OCH2CH2)5-OH underwent substantial biodegradation till the 9th day of the test, their further biodegradation proceeded very slowly. The longer homologues (n > 5) were fully biodegraded during the test. Although the biodegradation of the surfactants studied consisted in shortening the ethoxylene chain (hydrophilic part), it was found that the hydrophobic part also affected their biodegradation.
Źródło:: Ars Separatoria Acta; 2009-2010, 7; 69-76
1731-6340
Pojawia się w:: Ars Separatoria Acta
Dostawca treści:: Biblioteka Nauki

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