Temperature and pressure effects on zeta potential values of reservoir minerals

Rodriguez, Karina; Araujo, Mariela

doi:10.1016/j.jcis.2006.04.030

Cited by 115 publications

(45 citation statements)

References 19 publications

(23 reference statements)

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“…Similarly, it was reported that zeta potential of uncontaminated kaolinite is negative and ranges from -32 mV at pH 12 to lower negative values at pH 3 (West and Stewart 2000). Table 2 shows the reported iep and maximum-minimum zeta potential values of quartz along with the data from literature (Larson and Pugh 1998;Lorne et al 1999;Besra et al 2000;Huang and Fuerstenau 2001;Kosmulski et al 2002;Xu et al 2003;Fuerstenau and Jia 2004;Prasanphan and Nuntiya 2006;Rodriguez and Araujo 2006). As seen from Table 2, the reported ieps for quartz are generally around pH 2.…”

Section: Methodsmentioning

confidence: 78%

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A study of factors affecting on the zeta potential of kaolinite and quartz powder

Yükselen-Aksoy

Kaya²

2010

Environ Earth Sci

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The purpose of this study was to determine the effects of pH, ion type (salt and metal cations), ionic strength, cation valence, hydrated ionic radius, and solid concentration on the zeta potential of kaolinite and quartz powder in the presence of NaCl, KCl, CaCl 2 , CuCl 2 , BaCl 2 , and AlCl 3 solutions. The kaolinite and quartz powder have no isoelectric point (iep) within the entire pH range (3 \ pH \ 11). In the presence of hydrolysable metal ions, kaolinite and quartz powder have two ieps. As the cationic valence increases, the zeta potential of kaolinite and quartz powder becomes less negative. Monovalent cation, K ? , yields more negative zeta potential values than the divalent cation Ba 2? . As concentration of solid increases, the zeta potential of the minerals becomes more positive under acidic conditions; however, under alkaline conditions as solid concentration increases the zeta potential becomes more negative. Hydrated ionic radius also affects the zeta potential; the larger the ion, the thicker the layer and the more negative zeta potential for both kaolinite and quartz powder.

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Section: Methodsmentioning

confidence: 78%

“…As dielectric constant increases the double layer thickness increases (Sridharan 1991;Kaya and Fang 1996). Temperature is another effective parameter affecting the zeta potential (Rodriguez and Araujo 2006). As can be seen from Eq.…”

Section: Introductionmentioning

confidence: 99%

A study of factors affecting on the zeta potential of kaolinite and quartz powder

Yükselen-Aksoy

Kaya²

2010

Environ Earth Sci

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“…As the surface zeta potential varies with temperature, the filtration effect caused by electrostatic interaction also varies with temperature. 39,40 To investigate the charge effect of the MC membranes in response to thermal stimuli, the water flux through the membrane under hydrostatic pressure was measured as a function of temperature (Figure 6a). The high volumetric variations of flow through the MC membranes demonstrated the thermo-responsive charge effect.…”

Section: Thermo-responsive Multifunctional Membrane H Kim Et Almentioning

confidence: 99%

“…As the surface zeta potential normally increases with increasing temperature, the BSA molecules are more favorably adsorbed on the PPy surface, which intensifies the degradation of the membrane filtration performance. 39 …”

Section: Thermo-responsive Multifunctional Membrane H Kim Et Almentioning

confidence: 99%

Nature-inspired thermo-responsive multifunctional membrane adaptively hybridized with PNIPAm and PPy

Kim

Lee

2017

NPG Asia Mater

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Specialized plant tissues, such as the epidermis of a leaf covered with stomata, consist of soft materials with deformability and electrochemical properties to achieve specific functions in response to various environmental stimuli. Stimulus-responsive hydrogels with electrochemical properties are good candidates for imitating such special functionalities in nature and thus have great potential in a wide range of academic and industrial applications. However, hydrogel-incorporated conductive materials are usually mechanically rigid, which limits their application in other fields. In addition, the fabrication technology of structured functional hydrogels has low reproducibility due to the required multistep processing. Here, inspired by nature, specifically the stimulus-responsive functionalities of plants, a new thermo-responsive multifunctional hybrid membrane (HM) is synthesized through the in situ hybridization of conductive poly(pyrrole) (PPy) on a photopolymerized poly(N-isopropylacrylamide) (PNIPAm) matrix. The morphological and electrical properties of the fabricated HM are investigated to characterize various aspects of its multiple functions. In terms of morphology, the HM can be easily fabricated into various structures by smartly utilizing photopolymerization patterning, and it exhibits thermo-responsive deformability. In terms of functionality, it exhibits various electrical and charge responses to thermal stimuli. This simple and efficient fabrication method can be used as a promising platform for fabricating a variety of functional devices.

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“…The surface energy values determined in water were 205.06 ± 2.76 mJ.m -2 for montmorillonite (swelling clay), 151.80 ± 34.98 mJ.m -2 for bentonite [15], and 59.00 mJ.m -2 for kaolinite [16]. The zeta potential as function of pH can also be used to assess the surface properties of clay minerals such as kaolinite [17]. The point of zero charge of kaolinite was determined using electrophoresis and electroacoustic mobility measurements [18].…”

Section: Introductionmentioning

confidence: 99%

Effects of Heating and Acid Activation on the Structure and Surface Properties of a Kaolinite-illite-smectite Clayey Mixture

Landoulsi¹

2013

TOMPJ

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Abstract:This work aims at studying the effects of heat treatment and acid activation on the surface properties of a mixture of kaolinite-illite-smectite clay minerals collected from North Est of Tunisia. The raw material was characterized by various analytical and spectroscopic techniques such as XRD, FT-IR, TG-DSC, and N 2 physical adsorption.The true density of starting raw material increased from 2580 to 2609 kg.m 3 , while the surface area, S BET , decreased from 70.7 to 35.3 m 2 .g -1 upon heat treating at 550°C for 1 h. Acid activation of heat treated material led to partial dissolution of the octahedral sheets by interlayer and edge attack, the formation of amorphous silica and an overall structural degradation. Dynamic vapour Sorption (DVS) measurement revealed that the surface energy of the system increased after acid activation and with the acid treatment time. These structural/surface changes translated in higher negative zeta potential (

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Temperature and pressure effects on zeta potential values of reservoir minerals

Cited by 115 publications

References 19 publications

A study of factors affecting on the zeta potential of kaolinite and quartz powder

A study of factors affecting on the zeta potential of kaolinite and quartz powder

Nature-inspired thermo-responsive multifunctional membrane adaptively hybridized with PNIPAm and PPy

Effects of Heating and Acid Activation on the Structure and Surface Properties of a Kaolinite-illite-smectite Clayey Mixture

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