Effect of short-chain xanthate on electrostatic interactions and equilibrium thickness of foam films from aqueous solutions of non-ionic frother

Abstract Novel carbon nanodots (nCD-DBC) and nano zero-valent iron composites (nZVI-DBC) were synthesized using date palm waste-derived biochar (DBC). The synthesized materials were analyzed for chemical and structural composition by using FTIR, SEM, XRD, and TGA, and evaluated for their methylthioninium chloride dye (MB) removal efficiency from contaminated aqueous solutions. pH 7.0 was found optimum for the highest MB removal in sorption batch studies. Kinetics sorption of MB onto the sorbents was best described by pseudo-second-order (R2 = 0.93–0.99) and Elovich models (R2 = 0.86–0.97) implying that sorption was being controlled by chemisorption. Langmuir model predicted maximum sorption capacities for nCD-DBC, nZVI-DBC, and DBC were 1558.66, 1182.90, and 851.67 mg g−1, respectively, which correlated with the results of kinetics sorption. Likewise, nCD-DBC yielded the highest partition coefficient (7067 mL g−1), followed by nZVI-DBC (1460 mL g−1), and DBC (930 mL g−1). Post-sorption XRD, FTIR, and SEM analyses depicted the binding of MB onto the sorbents. It was suggested that electrostatic interactions, π–π electron donor-accepter interactions, degradation, and diffusion were responsible for MB removal by the synthesized materials. Therefore, the nCD-DBC, nZVI-DBC, and DBC can potentially be used for scavenging MB dye from contaminated aqueous solutions.

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Partial molar volumes and partial molar adiabatic compressibilities of a short chain perfluorosurfactant: Sodium heptafluorobutyrate in aqueous solutions at different temperatures

The Journal of Chemical Thermodynamics ◽

10.1016/j.jct.2005.03.021 ◽

2005 ◽

Vol 37 (12) ◽

pp. 1351-1355 ◽

Cited By ~ 2

Author(s):

Elena Blanco ◽

Juan M. Ruso ◽

Gerardo Prieto ◽

Félix Sarmiento

Keyword(s):

Aqueous Solutions ◽

Partial Molar Volumes ◽

Short Chain ◽

Molar Volumes ◽

Different Temperatures ◽

Partial Molar Adiabatic Compressibilities

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Effect of tetrapentyl ammonium bromide adsorption on the electrostatic interactions in aqueous octaethyleneglycol decylether foam films

Colloids and Surfaces A Physicochemical and Engineering Aspects ◽

10.1016/s0927-7757(03)00203-6 ◽

2003 ◽

Vol 223 (1-3) ◽

pp. 73-82 ◽

Cited By ~ 6

Author(s):

Jana K Angarska ◽

Emil D Manev

Keyword(s):

Electrostatic Interactions ◽

Ammonium Bromide ◽

Foam Films

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Black Foam Films from Aqueous Solutions of a Mixture of Phospholipids and a Permeation Enhancer

Journal of Colloid and Interface Science ◽

10.1006/jcis.2002.8308 ◽

2002 ◽

Vol 249 (2) ◽

pp. 398-404 ◽

Cited By ~ 6

Author(s):

Jean-François Tranchant ◽

Frédéric Bonté ◽

Sébastien Leroy ◽

Mickael Nedyalkov ◽

Dimo Platikanov ◽

...

Keyword(s):

Aqueous Solutions ◽

Permeation Enhancer ◽

Foam Films

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60Co γ-radiolysis of oxygenated aqueous solutions of cysteine at pH 7

Canadian Journal of Chemistry ◽

10.1139/v70-068 ◽

1970 ◽

Vol 48 (3) ◽

pp. 417-421 ◽

Cited By ~ 21

Author(s):

J. E. Packer ◽

R. V. Winchester

Keyword(s):

Hydrogen Peroxide ◽

Aqueous Solutions ◽

Short Chain ◽

Thiyl Radical ◽

Reaction Paths ◽

Chain Reactions

In the radiolysis of oxygenated aqueous solutions of cysteine (RSH) at pH 7, short chain reactions occur yielding cystine (RSSR) and hydrogen peroxide. Two competing reaction paths involving reaction of the thiyl radical (RS•) with oxygen or thiol anion (RS−) are postulated to explain the results.

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