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1. Revisit of wall‐induced lateral migration in particle electrophoresis through a straight rectangular microchannel: Effects of particle zeta potential

Author:
Liu, Zhijian; Li, Di; Saffarian, Maryam; Tzeng, Tzuen‐Rong; Song, Yongxin; Pan, Xinxiang; Xuan, Xiangchun
Source:
Electrophoresis 2019 v.40 no.6 pp. 955-960
ISSN:
0173-0835
Subject:
zeta potential,   etc   ; electrophoresis; polystyrenes;     Show all 3 Subjects
Abstract:
... Previous studies have reported a lateral migration in particle electrophoresis through a straight rectangular microchannel. This phenomenon arises from the inherent wall‐induced electrical lift that can be exploited to focus and separate particles for microfluidic applications. Such a dielectrophoretic‐like force has been recently found to vary with the buffer concentration. We demonstrate in this ...
DOI:
10.1002/elps.201800198

2. Flotation separation of smithsonite from calcite using 2-phosphonobutane-1,2,4-tricarboxylic acid as a depressant

Author:
Liu, Cheng; Zhang, Wencai; Song, Shaoxian; Li, Hongqiang; Liu, Yong
Source:
Powder technology 2019 v.352 pp. 11-15
ISSN:
0032-5910
Subject:
zeta potential,   etc   ; calcite; oleic acid; powders; smithsonite;     Show all 5 Subjects
Abstract:
... The effect of depressant 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) on the flotation separation of smithsonite from calcite was studied by micro-flotation and electro-kinetic tests. The micro-flotation results showed that good floatability of both smithsonite and calcite were achieved in the presence of sodium oleate. The depressant PBTCA selectively depressed calcite without interfering t ...
DOI:
10.1016/j.powtec.2019.04.036

3. The effect of 2-phosphonobutane-1,2,4-tricarboxylic acid on the flotation separation of pyrite from lizardite

Author:
Yu, Xinyang; Hu, Linqi; Liu, Cheng; Wang, Liping; Li, Hongqiang; Xue, Lei
Source:
Colloids and surfaces 2019 v.570 pp. 317-321
ISSN:
0927-7757
Subject:
zeta potential,   etc   ; adsorption; carboxylic acids; pyrite;     Show all 4 Subjects
Abstract:
... To remove lizardite slimes from pyrite surface in pyrite-lizardite system, 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) was introduced as a possible depressant for lizardite slimes. Micro-flotation test results showed that PBTCA can remove lizardite slimes from pyrite surface and the floatability of pyrite was restored. Zeta potential measurements indicated that the surface charge of lizardi ...
DOI:
10.1016/j.colsurfa.2019.03.011

4. Experimental study of the surface potential characteristics of coal containing gas under different loading modes (uniaxial, cyclic and graded)

Author:
Liu, Yongjie; Li, Xuelong; Li, Zhonghui; Chen, Peng; Yang, Tao
Source:
Engineering geology 2019 v.249 pp. 102-111
ISSN:
0013-7952
Subject:
zeta potential,   etc   ; adsorption; coal; friction; gases;     Show all 5 Subjects
Abstract:
... In this paper, the characteristics and mechanism of the surface potential of coal containing gas for different loading modes (uniaxial compression, cyclic and graded loading) are investigated using an experimental surface potential testing system. Coal can produce a surface potential signal during gas adsorption. This signal increases with the adsorption time and exhibits a memory effect; that is, ...
DOI:
10.1016/j.enggeo.2018.12.013

5. Influence of framework and interlayer on the colloidal stability of design swelling high-charged micas

Author:
Osuna, Francisco J.; Cota, Agustín; Fernández, Mariela A.; Pavón, Esperanza; Torres Sánchez, Rosa M.; Alba, María D.
Source:
Colloids and surfaces 2019 v.561 pp. 32-38
ISSN:
0927-7757
Subject:
zeta potential,   etc   ; cations; colloids; mica; pH;     Show all 5 Subjects
Abstract:
... Stability of colloidal clay minerals dispersion of fundamental in many industrial processes. Therefore, surface charge of the synthetic swelling high-charged mica family, Na-Mica-n (n = 2 or 4, n is the total layer charge) were investigated to study its colloidal dispersion stability as a function of the framework and interlayer space composition. Na-Mica-n (n = 2 or 4) micas were synthesized and ...
DOI:
10.1016/j.colsurfa.2018.09.086

6. Streaming Current and Effective ζ-Potential for Particle-Covered Surfaces with Random Particle Distributions

Author:
Ekiel-Jeżewska, Maria L.; Adamczyk, Zbigniew; Blawzdziewicz, Jerzy
Source:
Journal of physical chemistry 2019 v.123 no.6 pp. 3517-3531
ISSN:
1932-7455
Subject:
zeta potential,   etc   ; physical chemistry; prediction; roughness;     Show all 4 Subjects
Abstract:
... A detailed theoretical and experimental study is presented concerning the streaming current and the derivative effective ζ-potential for a planar surface covered by a monolayer of adsorbed particles. Precise simulation results are obtained for the equilibrium and random-sequential-adsorption (RSA) distributions of monodisperse spherical particles interacting via the excluded-volume potential. The ...
DOI:
10.1021/acs.jpcc.8b10068

7. Interaction between charged lipid vesicles and point- or rod-like trivalent ions

Author:
Martín-Molina, Alberto; Lue, Leo; Quesada-Pérez, Manuel; Bohinc, Klemen
Source:
Colloids and surfaces 2019 v.178 pp. 525-529
ISSN:
0927-7765
Subject:
zeta potential,   etc   ; cations; electrophoresis; geometry; lanthanum; lipids; models; spermidine;     Show all 8 Subjects
Abstract:
... This work examines the influence of the charge distribution of trivalent cations on their interaction with soft anionic particles, using a combination of experimental measurements and theoretical modelling. In particular, we perform electrophoresis measurements to determine the zeta-potential of anionic liposomes in the presence of spermidine and lanthanum cations. We work in a range of electrolyt ...
DOI:
10.1016/j.colsurfb.2019.02.010

8. Investigations of chromium(III) oxide removal from the aqueous suspension using the mixed flocculant composed of anionic and cationic polyacrylamides

Author:
Wiśniewska, Małgorzata; Chibowski, Stanisław; Urban, Teresa; Terpiłowski, Konrad
Source:
Journal of hazardous materials 2019 v.368 pp. 378-385
ISSN:
0304-3894
Subject:
zeta potential,   etc   ; adsorption; chromium; flocculants; flocculation; pH; polyacrylamide; turbidimetry;     Show all 8 Subjects
Abstract:
... The main purpose of experiments was determination of the adsorption mechanism of two forms of ionic polyacrylamide (PAM) on the surface of chromium(III) oxide dispersed in the aqueous medium. This was performed in relation to anionic polyacrylamide (AN PAM) and cationic one (CT PAM) in the simple systems (containing only one selected polymer) and in the mixed systems (containing both ionic forms o ...
DOI:
10.1016/j.jhazmat.2019.01.068

9. Study of the complex coacervation mechanism between the lysing enzyme from T. harzianum and polyallylamine hydrochloride

Author:
Bey, Houda; Gtari, Wala; Aschi, Adel
Source:
International journal of biological macromolecules 2019 v.124 pp. 780-787
ISSN:
0141-8130
Subject:
zeta potential,   etc   ; droplets; light scattering; mixing; pH; polyallylamines; temperature;     Show all 7 Subjects
Abstract:
... Complex coacervation was achieved by mixing the lysing enzyme from T. harzianum (LYS) with polyallylamine hydrochloride (PAH). We show in this work that the study electrostatic complexes conformation can lead to the formation of dense complexes. We systematically investigated the effects of pH and the mass ratio on the structure and properties of the complex. The different transition phases (pHc, ...
DOI:
10.1016/j.ijbiomac.2018.11.266

10. TEMPO oxidation and high-speed blending as a combined approach to disassemble bacterial cellulose

Author:
do Nascimento, Eligenes Sampaio; Pereira, André Luís Sousa; Barros, Matheus de Oliveira; Barroso, Maria Karolina de Aaraújo; Lima, Helder Levi Silva; Borges, Maria de Fatima; Feitosa, Judith Pessoa de Andrade; de Azeredo, Henriette Monteiro Cordeiro; Rosa, Morsyleide de Freitas
Source:
Cellulose 2019 v.26 no.4 pp. 2291-2302
ISSN:
0969-0239
Subject:
zeta potential,   etc   ; cellulose; crystal structure; freeze drying; mixing; nanofibers; oxidation;     Show all 7 Subjects
Abstract:
... The aim of this study was to obtain bacterial cellulose (BC) nanofibrils by using a high speed blender on BC previously oxidized with 2,2,6,6-tetramethyl-1-piperidinoxyl (TEMPO) radical. The resulting oxidized nanofibrillated bacterial cellulose (BCOXNF) was characterized chemically, thermally, and morphologically, presenting high crystallinity index (92%), great dispersion stability (zeta potenti ...
DOI:
10.1007/s10570-018-2208-2

11. Elimination of the adverse effect of calcite slimes on the sulfidization flotation of malachite in the presence of water glass

Author:
Liu, Cheng; Song, Shaoxian; Li, Hongqiang; Li, Yubiao; Ai, Guanghua
Source:
Colloids and surfaces 2019 v.563 pp. 324-329
ISSN:
0927-7757
Subject:
zeta potential,   etc   ; adsorption; adverse effects; calcite; colloids; glass; ions; malachite;     Show all 8 Subjects
Abstract:
... In order to eliminate the adverse effects of calcite slimes on the sulfidization-xanthate flotation of malachite, water glass was used as a depressant for calcite slimes. Micro-flotation results indicated that the floatability of malachite was restored in mixed malachite and calcite by adding water glass. Addition of the water glass into the suspension of malachite with calcite slimes promoted dis ...
DOI:
10.1016/j.colsurfa.2018.12.022

12. A novel insight of the effect of sodium chloride on the sulfidization flotation of cerussite

Author:
Liu, Cheng; Zhang, Wencai; Song, Shaoxian; Li, Hongqiang; Jiao, Xiangke
Source:
Powder technology 2019 v.344 pp. 103-107
ISSN:
0032-5910
Subject:
zeta potential,   etc   ; adsorption; cerussite; ions; lead; powders; sodium chloride;     Show all 7 Subjects
Abstract:
... Effects of sodium chloride on the sulfidization flotation of cerussite (PbCO3) were investigated by micro-flotation tests, adsorption tests and zeta potential measurements. The micro-flotation test results indicated that sodium chloride effectively improved the sulfidization flotation performance of cerussite. The electrical double layers of cerussite particles were compressed in sodium chloride s ...
DOI:
10.1016/j.powtec.2018.12.002

13. Flexibility of inactive electrokinetic layer at charged solid-liquid interface in response to bulk ion concentration

Author:
Alizadeh, Amer; Wang, Moran
Source:
Journal of colloid and interface science 2019 v.534 pp. 195-204
ISSN:
0021-9797
Subject:
zeta potential,   etc   ; aqueous solutions; liquid-solid interface; models; nanotechnology; thermodynamics;     Show all 6 Subjects
Abstract:
... It has been a long-lasting debate on the position of zeta potential plane within aqueous solutions. This paper reports a flexible behavior of the inactive electrokinetic layer between the outer-Helmholtz plane and zeta potential plane, so-called buffer layer, in response to bulk ion concentration. This flexibility is not only corroborated by analyzing the measured zeta potentials with resulting el ...
DOI:
10.1016/j.jcis.2018.09.010

14. Latex particle rejections from virgin and mixed charged surface polycarbonate track etched membranes

Author:
Delavari, Armin; Breite, Daniel; Schulze, Agnes; Baltus, Ruth E.
Source:
Journal of membrane science 2019 v.584 pp. 110-119
ISSN:
0376-7388
Subject:
zeta potential,   etc   ; adsorption; carboxylic acids; chemical bonding; fouling; latex; microporous membranes; pH; porosity; prediction; zwitterions;     Show all 11 Subjects
Abstract:
... In this study, the impact of membrane surface characteristics on particle rejections was experimentally examined for virgin and surface modified polycarbonate track etched microporous membranes with different pore sizes. The membrane surface was modified by covalently binding tetraethylpentamine, resulting in changes in measured zeta potential. The zeta potential of the modified membranes was pH s ...
DOI:
10.1016/j.memsci.2019.04.065

15. Deposition and reentrainment of colloidal particles in disordered fibrous filters under chemically and physically unfavorable conditions

Author:
Lee, Handol; Kang, Seungkoo; Kim, Seong Chan; Pui, David Y.H.
Source:
Journal of membrane science 2019 v.582 pp. 322-334
ISSN:
0376-7388
Subject:
zeta potential,   etc   ; artificial membranes; collectors; colloids; energy; filters; filtration; hydrodynamics; ionic strength; models; prediction;     Show all 11 Subjects
Abstract:
... This study is to establish computational fluid dynamics (CFD) simulations of disordered fibrous filters under unfavorable conditions to investigate the effects of chemical and physical factors on filtration performance. We employed a discrete phase model (DPM) to track individual particles, and user-defined functions were implemented to consider the particle deposition to the collector surface via ...
DOI:
10.1016/j.memsci.2019.03.092

16. Pickering emulsions stabilized with cashew gum nanoparticles as indomethacin carrier

Author:
Lima Cardial, Mayrla R.; Paula, Haroldo C.B.; da Silva, Rudson Brendon Cordeiro; da Silva Barros, João Felipe; Richter, Ana Rosa; Sombra, Fernanda M.; de Paula, Regina C.M.
Source:
International journal of biological macromolecules 2019 v.132 pp. 534-540
ISSN:
0141-8130
Subject:
zeta potential,   etc   ; cashew gum; droplet size; droplets; emulsifying properties; emulsions; encapsulation; indomethacin; ionic strength; nanoparticles; spectroscopy;     Show all 11 Subjects
Abstract:
... Polysaccharide nanoparticles with potential to stabilize Pickering emulsions have been recently object of many research. Acetylated cashew gum with different degrees of substitution has been used in this work, in the pursuit of obtaining stable Pickering emulsions. Acetylated cashew gum was characterized by infrared and nuclear resonance spectroscopy. Effects of cashew gum derivative acetyl conten ...
DOI:
10.1016/j.ijbiomac.2019.03.198

17. Rheological and structural characterization of gels from albumin and low methoxyl amidated pectin mixtures

Author:
Chaux-Gutiérrez, Ana María; Pérez-Monterroza, Ezequiel José; Mauro, Maria Aparecida
Source:
Food hydrocolloids 2019 v.92 pp. 60-68
ISSN:
0268-005X
Subject:
zeta potential,   etc   ; Fourier transform infrared spectroscopy; albumins; confocal microscopy; gels; hydrocolloids; pH; pectins; rheological properties; solutes;     Show all 10 Subjects
Abstract:
... The rheological behavior of gels prepared from albumin (ALB) and a mixture of ALB and low methoxyl amidated pectin (PEC) with different proportions were studied using oscillatory rheological tests, Fourier transform infrared spectroscopy (FT-IR spectroscopy), zeta potential measurements and confocal microscopy. The mixture was always 5% of the total solute. Assays were performed in two series, one ...
DOI:
10.1016/j.foodhyd.2019.01.025

18. Association equilibrium model. I. Influence of pH and salt concentration on ion-exchanger

Author:
Chen, Liang; Yun, Junxian; Zhang, Haiyan; Dai, Bin
Source:
Journal of chromatography 2019 v.1595 pp. 49-57
ISSN:
0021-9673
Subject:
zeta potential,   etc   ; adsorbents; adsorption; chromatography; hydrogen ions; ion exchange; ionization; models; pH; salt concentration;     Show all 10 Subjects
Abstract:
... An association equilibrium model is presented in this work to illustrate the charged state of an ion-exchange adsorbent in electrolytic solution. This semi-empirical model considers the adsorption equilibrium of hydrogen ions and small-molecular salt ions with adsorbents, and it can be used to describe the effects of pH and salt concentration on the zeta potential, associated hydrogen ions and ion ...
DOI:
10.1016/j.chroma.2019.02.030

19. Experimentation and modeling of surface chemistry of the silica-water interface for low salinity waterflooding at elevated temperatures

Author:
Duffy, Timothy S.; Raman, Balaji; Hall, Derek M.; Machesky, Michael L.; Johns, Russell T.; Lvov, Serguei N.
Source:
Colloids and surfaces 2019 v.570 pp. 233-243
ISSN:
0927-7757
Subject:
zeta potential,   etc   ; carbonates; models; oil fields; oils; pH; prediction; salinity; silica; sodium chloride; temperature; wettability;     Show all 12 Subjects
Abstract:
... Models predicting wettability alteration of mineral-brine-oil interfaces during low-salinity-waterflooding (LSW) should account for the elevated temperatures typically found in oil reservoirs. For the first time, high temperature ζ-potential (zeta potential) data for silica are collected and used to interpret surface chemistries and interactions at reservoir-like conditions to predict temperature’ ...
DOI:
10.1016/j.colsurfa.2019.03.007

20. Driving forces of disaggregation and reaggregation of peanut protein isolates in aqueous dispersion induced by high-pressure microfluidization

Author:
Gong, Kuijie; Chen, Lirong; Xia, Haiyong; Dai, Hongcui; Li, Xiaoyue; Sun, Linlin; Kong, Weilin; Liu, Kaichang
Source:
International journal of biological macromolecules 2019 v.130 pp. 915-921
ISSN:
0141-8130
Subject:
zeta potential,   etc   ; disulfide bonds; electrostatic interactions; hydrogen bonding; hydrophobic bonding; hydrophobicity; peanut protein; peptides; protein isolates;     Show all 9 Subjects
Abstract:
... Our previous report described that high-pressure microfluidization (HPM) treatment can disaggregate peanut protein isolates (PPIs) to prepare antihypertensive peptide fractions. In the present study, we investigated the driving forces of disaggregation and reaggregation of PPIs in aqueous dispersion induced by HPM treatment and discussed the mechanism. The driving forces of hydrogen bonds, surface ...
DOI:
10.1016/j.ijbiomac.2019.02.123