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bentonites modified with anionic and ionic surfactants for

Bentonites modified with anionic and cationic surfactants for .Bentonite Pacitan was modified with cetyl trimethylammonium bromide (CTAB) and LAS for bleaching crude palm oil. The organo-bentonites were prepared by normal heating and microwave irradiation. The advantage of using microwave irradiation is time efficiency. The bentonites were characterized by FTIR and XRD.bentonites modified with anionic and ionic surfactants for,The Modification of Rheological Properties of Bentonite-Water .Abstract—In the use of bentonite in different industrial applications, different additives are recommended to optimize the rheological properties of the formulation. In this study, the effect of anionic surfactant sodium dodecyl sulfate (SDS) and cationic surfactant cetyltrimethyl ammonium bromide (CTAB) on the rheological.

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Surfactant modified clays' consistency limits and contact anglesThe experimental results indicated that SMC consistency limits (liquid and plastic limits) changed significantly compared to those of natural clay. Plasticity index and liquid limit (PI-LL) values representing soil class approached the A-line when zwitterion, nonionic, and anionic surfactant percentage increased. However.bentonites modified with anionic and ionic surfactants for,bentonites modified with anionic and ionic surfactants for,Adsorption of Acid Dyes onto Bentonite and Surfactant-modified .Oct 25, 2013 . informed the use of bentonite modified and organobentonite with a cationic surfactant for acidic dye elimination via high loading quantity of surfactant [20-22]. Preceding studies had shown that the main mechanism of the adsorption interpreted the acidic dye elimination is the anionic exchange between.

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21 Comment on bentonites modified with anionic and ionic surfactants for

an investigation on the use of surfactants in the . - ABPG

Feb 23, 2017 . work, calcic bentonite clay was modified with the purpose of enhancing its affinity for the organic phase in oil-based drilling fluids. . KEYWORDS surface modification; organophilic clay; drilling fluid; surfactant; bentonite. 1. To whom all . the nonionic Triton X-100 (TX100), the anionic sodium dodecylsulfate.

Bentonites modified with anionic and cationic surfactants for .

Bentonite Pacitan was modified with cetyl trimethylammonium bromide (CTAB) and LAS for bleaching crude palm oil. The organo-bentonites were prepared by normal heating and microwave irradiation. The advantage of using microwave irradiation is time efficiency. The bentonites were characterized by FTIR and XRD.

Preparations of organobentonite using nonionic surfactants

greatly modified by simple ion-exchange reactions with large organic cations (cationic surfactants) and this organo- bentonite is highly . nonionic surfactants intercalates into the interlamellar space of bentonite and may demonstrate higher sorption ca- ... of anionic-nonionic and cationic-nonionic surfactant mix- tures on.

Use of Surfactant-Modified Zeolites and Clays for the . - MDPI

Mar 24, 2017 . Keywords: heavy metals; water treatment; surfactant-modified surfaces; zeolite; clay. 1. Introduction .. of dimeric surfactant that contains both anionic and cationic surfactants and can adsorb onto both negatively and ... Cetyl pyridinium bromide (CPB)-modified bentonite adsorbed up to 0.7 and. 1.4 mmol/g.

The Modification of Rheological Properties of Bentonite-Water .

Abstract—In the use of bentonite in different industrial applications, different additives are recommended to optimize the rheological properties of the formulation. In this study, the effect of anionic surfactant sodium dodecyl sulfate (SDS) and cationic surfactant cetyltrimethyl ammonium bromide (CTAB) on the rheological.

an investigation on the use of surfactants in the . - ABPG

Feb 23, 2017 . work, calcic bentonite clay was modified with the purpose of enhancing its affinity for the organic phase in oil-based drilling fluids. . KEYWORDS surface modification; organophilic clay; drilling fluid; surfactant; bentonite. 1. To whom all . the nonionic Triton X-100 (TX100), the anionic sodium dodecylsulfate.

Geotechnical properties of some organoclays - Indian Academy of .

surface active surfactants to modify the fundamental properties of soft clays. In this study, surfactant–clay . ral clay containing anionic and cationic surfactants transformed into more high plasticity clay. (CH) and high plasticity .. cationic surfactant. Budhu et al (1997) have reported that untreated bentonite had a dense plate.

removal of anionic contaminants using surfactant-modified .

Abstract—In this study, the feasibility of using surfactant-modified palygorskite (PFl-1) and sepiolite. (SepSp-1) for removal of anionic contaminants from water was evaluated from batch experiments. The results showed that both minerals had strong affinity for hexadecyltrimethylammonium (HDTMA), a cationic surfactant.

Studies on the adsorption of dodecylbenzenesulfonate and .

Dec 21, 2017 . The surface excess concentration as well as the area occupied by each adsorbed surfactant molecule at liquid/air interface was calculated. The cationic surfactant (CPBr) was found to adsorb on bentonite surface to a higher extent compared with anionic surfactant (DBS). The adsorption of CPBr exceeded.

Novel intercalation mechanism of zwitterionic surfactant modified .

Apr 26, 2017 . Since the available surface sites of clay minerals for bonding anionic or nonionic surfactants are extremely limited, these two kinds of surfac- tants are much less considered for modification of swelling clay mineral. (Fu et al., 2016). Zwitterionic surfactants, such as sulfobetaines, have similar proper-.

Bentonites modified with anionic and cationic surfactants for .

23 Ags 2017 . Gunawan, Nita Sofianji and Indraswati, Nani and Ju, Yi-Hsu and Soetaredjo, Felycia Edi and Ayucitra, Aning and Ismadji, Suryadi (2010) Bentonites modified with anionic and cationic surfactants for bleaching of crude palm oil. Applied Clay Science, 47 (3-4). 462 -464. ISSN 0169-1317.

Aculyn 22 -- Technical Data Sheet - Dow Chemical

ACULYN 22 rheology modifier is an anionic hydrophobically modified alkali-soluble acrylic polymer emulsion. (HASE) with unusually . ACULYN 22 is a Hydrophobically-modified Alkali. Soluble .. Certain anionic and nonionic surfactants give a synergistic increase in the viscosity and thickening efficiency of neutralized.

Use of Chitosan-modified Bentonite for Removal of Cu2+, Cl− and 2 .

noxyacetic acid (2,4-D) from aqueous solution using chitosan-modified bentonite. When the chi- tosan was loaded on . Key words: Bentonite, chitosan, compound modification, adsorption efficiency. * Corresponding author: Dr. ... Bentonites modified with anionic and cationic surfactants for crude palm oil, Appl. Clay Sci.

Surfactant - Wikipedia

Hydrogen bonding decreases with increasing temperature, and the water solubility of nonionic surfactants therefore decreases with increasing temperature. Nonionic surfactants are less sensitive to water hardness than anionic surfactants, and they foam less strongly. The differences between the.

Felycia Edi-Soetaredjo - Google Scholar Citations

Neem leaf utilization for copper ions removal from aqueous solution. N Febriana, SO Lesmana, FE Soetaredjo, J Sunarso, S Ismadji. Journal of the Taiwan Institute of Chemical Engineers 41 (1), 111-114, 2010. 28, 2010. Bentonites modified with anionic and cationic surfactants for bleaching of crude palm oil. NS Gunawan.

Interaction of surface-modified silica nanoparticles with clay .

The effect of surface functionalization was evaluated for four different surfaces: unmodified, surface-modified with anionic (sulfonate), cationic (quaternary ammonium (quat)), and nonionic (polyethylene glycol (PEG)) surfactant. We employed ultraviolet–visible spectroscopy to determine the concentration of adsorbed.

Adsorption of the quaternanry ammonium salts on bentonite

Mar 5, 2002 . Key words: bentonite, surface modification, quaternary ammonium salts. INTRODUCTION .. added displaces the anionic indicator from the salt, which changes the colour of the chloroform layer into pink. . Schematic representation of adsorption of cationic surfactants on bentonite as a function of surfactant.

Beneficial role of surfactants in electrochemistry . - CECRI, Karaikudi

Dec 2, 2005 . surfactant may be classified as cationic, anionic, nonionic or zwitterionic. Two important properties of surfactants viz., adsorption at interface and aggregation into supramolecular structures are advantageously used in electrochemistry. Surfactants are able to modify and control the properties of electrode.

studies on the interaction of cationic surfactants with clay minerals

Aug 12, 1971 . ABSTRACT: Adsorption and desorption of cationic surfactants, cetyl pyridinium bromide, cetyl trimethyl ammonium bromide, dodecyl pyridinium bromide on bentonite, kaolinite and illite, and their . It is well known that the physical properties of soils can be modified considerably by combination with certain.

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