Effect of pH on adsorption of anionic surfactants on limestone: Experimental study and surface complexation modeling

Tagavifar, Mohsen; Jang, Sung Hyun; Sharma, Himanshu; Wang, D.; Chang, Leonard; Mohanty, Kishore K.; Pope, Gary A.

doi:10.1016/j.colsurfa.2017.11.050

Cited by 73 publications

(27 citation statements)

References 77 publications

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“…Not many surface complexation models involving surfactant adsorption are available. A recent example in the work of Tagavifar et al involves a purely diffuse double layer model [57]. Here, we use a more complex model.…”

Section: Resultsmentioning

confidence: 99%

“…In the literature, there are not many studies where a comprehensive experimental and theoretical approach was applied. The most recent one is by Tagavifar et al [57] where the pH effect on anionic surfactant adsorption on limestone was studied in order to investigate the dynamics of surfactant adsorption. To the best of our knowledge, for the first time in our study the SCM model was used to describe the experimental data for oxidic systems.…”

Section: Discussionmentioning

confidence: 99%

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Tailoring the stability/aggregation of one-dimensional TiO₂(B)/titanate nanowires using surfactants

Selmani

Lützenkirchen

Kučanda

et al. 2019

Beilstein J. Nanotechnol.

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The increased utilization of one-dimensional (1D) TiO2 and titanate nanowires (TNWs) in various applications was the motivation behind studying their stability in this work, given that stability greatly influences both the success of the application and the environmental impact. Due to their high abundance in aqueous environments and their rich technological applicability, surfactants are among the most interesting compounds used for tailoring the stability. The aim of this paper is to determine the influence of surfactant molecular structure on TNW stability/aggregation behavior in water and aqueous NaBr solution by dynamic and electrophoretic light scattering. To accomplish this, two structurally different quaternary ammonium surfactants (monomeric DTAB and the corresponding dimeric 12-2-12) at monomer and micellar concentrations were used to investigate TNW stability in water and NaBr. It was shown that TNWs are relatively stable in Milli-Q water. However, the addition of NaBr induces aggregation, especially as the TNW mass concentration increases. DTAB and 12-2-12 adsorb on TNW surfaces as a result of the superposition of favorable electrostatic and hydrophobic interactions. As expected, the interaction of TNWs with 12-2-12 was stronger than with DTAB, due to the presence of two positively charged head groups and two hydrophobic tails. As a consequence of the higher adsorption of 12-2-12, TNWs remained stable in both media, while DTAB showed an opposite behavior. In order to gain more insight into changes in the surface properties after surfactant adsorption on the TNW surface, a surface complexation model was employed. With this first attempt to quantify the contribution of the surfactant structure on the adsorption equilibrium according to the observed differences in the intrinsic log K values, it was shown that 12-2-12 interacts more strongly with TNWs than DTAB. The modelling results enable a better understanding of the interaction between TNWs and surfactants as well as the prediction of the conditions that can promote stabilization or aggregation.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Tailoring the stability/aggregation of one-dimensional TiO₂(B)/titanate nanowires using surfactants

Selmani

Lützenkirchen

Kučanda

et al. 2019

Beilstein J. Nanotechnol.

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“…Surface complexation models (SCMs) for carbonates have been used to explain adsorption isotherms, surface charge, and to model dissolution and growth kinetics when inhibitors are present [74][75][76][77][78]. Defining reactions of surface species and their concentrations significantly affects the accuracy of modeling results.…”

Section: Discussionmentioning

confidence: 99%

Surfactant inhibition mechanisms of carbonate mineral dissolution in shale

Kim

Jagannath

et al. 2021

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Surfactants are common additives to hydraulic fracturing and enhanced oil recovery (EOR) fluids, and are under consideration for amendment to supercritical carbon dioxide for geological carbon sequestration (GCS). The effect of a common anionic surfactant, internal olefin sulfonate (IOS), on mineral dissolution from shale into brine was evaluated. When added to brine at concentrations exceeding the critical micelle concentration (94 mg/L), IOS inhibited carbonate mineral dissolution in an Eagle Ford shale, as well as dissolution of optical quality calcite (the dominant carbonate in the shale). Laser profilometry images provide spatial resolution across >3 orders of magnitude, and indicate that IOS addition to brine both enhances the formation of new etch pits in calcite, and impedes their further growth. Time-of-flight secondary ion mass spectrometry surface profiles show for the first time that IOS preferentially adsorbs at calcite pit edges versus flat calcite surfaces (i.e., terraces). Surface pressure calculations, sulfur K-edge near edge X-ray absorption fine structure (NEXAFS) spectroscopy results, and density functional theory (DFT) calculations support this observation; the DFT results indicate that the sulfonate head group of the IOS molecule binds strongly to the calcite step site as compared to the terrace site. The S K-edge NEXAFS results indicate that IOS adsorbed more to etched calcite surfaces compared to smooth calcite surfaces. Overall, the results indicate that weak adsorption on flat calcite surfaces (i.e., terraces) disrupts water structure and enhances mass transfer of dissolution, while strong adsorption on calcite pit edges displaces adsorbed water and inhibits further etch pit growth. This work provides the first direct evidence of preferential adsorption of IOS to etched calcite surfaces and links it to macroscopic dissolution kinetics. This work has implications for surfactantcontaining fluids used in hydraulic fracturing, EOR and potentially GCS for subsurface injection into carbonate rich reservoirs.

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“…Addition of high levels of BC to fresh leachate may increase pH and promote the formation of metal hydroxides. However, adverse effect of low pH on adsorption of Ni onto AC has been reported due to competence with hydrogen ions [27]. The influence of pH on adsorption of heavy metals on various adsorbents has been well documented [28].…”

Section: Effect Of Bc Dosage On the Adsorption Of Heavy Metals In Lanmentioning

confidence: 99%

Adsorption of Lead(II), Manganese(II), and Copper(II) onto biochar in landfill leachate: implication of non-linear regression analysis

Zand

Abyaneh

2020

Preprint

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The feasibility of using wood-derived biochar (BC) to remove Pb, Mn, and Cu from landfill leachate was investigated and modeled in this study. The effect of contact time, biochar dosage and particle size on adsorption of the heavy metals onto BC was examined. BC was used in two form i.e. pulverized (PWB) and crushed (CWB) to evaluate the effect of BC particle size on adsorption characteristics. Biochar was produced under the pyrolytic temperature of 740 °C. The kinetics of Pb, Mn, and Cu adsorption onto PWB and CWB were assessed using the pseudo second-order and Elovich models, where both applied models could well describe the adsorption kinetics. Equilibrium adsorption capacity of the heavy metals onto BC in leachate system was evaluated using the Langmuir, non-linearized Freundlich, linearized Freundlich, and Temkin isotherms and found to have the following order for PWB: Non-linearized Freundlich>Temkin>Langmuir>Linearized Freundlich. The Langmuir and linearized Freundlich models could not adequately represent adsorption of the heavy metals onto biochar, especially for CWB. Using the non-linearized Freundlich isotherm significantly reduced adsorption prediction error. The adsorption affinity of PWB for Pb, Mn, and Cu was greater than CWB in all treatments. Wood-derived biochar is suggested to be used for the removal of heavy metals from landfill leachate as an economical adsorbent.

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Effect of pH on adsorption of anionic surfactants on limestone: Experimental study and surface complexation modeling

Cited by 73 publications

References 77 publications

Tailoring the stability/aggregation of one-dimensional TiO₂(B)/titanate nanowires using surfactants

Tailoring the stability/aggregation of one-dimensional TiO₂(B)/titanate nanowires using surfactants

Surfactant inhibition mechanisms of carbonate mineral dissolution in shale

Adsorption of Lead(II), Manganese(II), and Copper(II) onto biochar in landfill leachate: implication of non-linear regression analysis

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Effect of pH on adsorption of anionic surfactants on limestone: Experimental study and surface complexation modeling

Cited by 73 publications

References 77 publications

Tailoring the stability/aggregation of one-dimensional TiO2(B)/titanate nanowires using surfactants

Tailoring the stability/aggregation of one-dimensional TiO2(B)/titanate nanowires using surfactants

Surfactant inhibition mechanisms of carbonate mineral dissolution in shale

Adsorption of Lead(II), Manganese(II), and Copper(II) onto biochar in landfill leachate: implication of non-linear regression analysis

Contact Info

Product

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Tailoring the stability/aggregation of one-dimensional TiO₂(B)/titanate nanowires using surfactants

Tailoring the stability/aggregation of one-dimensional TiO₂(B)/titanate nanowires using surfactants