Surface charge and adsorption from water onto quartz sand of humic acid

Jada, Amane; Akbour, Rachid Aı̈t; Douch, J.

doi:10.1016/j.chemosphere.2005.12.063

Cited by 86 publications

(34 citation statements)

References 26 publications

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“…The reason is that API oil well cement always contains considerable amounts of sulfate (∼ 3 to 4 wt % CaSO 4 · n H 2 O), which makes analysis of adsorbed amount of sulfate practically impossible. In highly alkaline suspensions (pH > 12), silica is negatively charged, which stems from deprotonated silanol groups present at the silica surface 18. We confirmed this for our silica flour sample by measurement of the zeta potential in 0.1 M NaOH.…”

Section: Resultssupporting

confidence: 76%

“…In highly alkaline suspensions (pH > 12), silica is negatively charged, which stems from deprotonated silanol groups present at the silica surface. 18 We confirmed this for our silica flour sample by measurement of the zeta potential in 0.1M NaOH. At a water to silica ratio of 0.44, a value for the zeta potential of À7.7 mV was found.…”

Section: Sulfate-dependent Adsorption Of Fla On Silicasupporting

confidence: 74%

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Effect of high temperature and the role of sulfate on adsorption behavior and effectiveness of AMPS®‐based cement fluid loss polymers

Lummer

Dugonjic-Bilic

Plank

2011

J of Applied Polymer Sci

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The fluid loss control performance of 2-acrylamido-2-methylpropane sulfonic acid (AMPS V R )-based copolymers added to cement slurries was studied at 27 and 100 C, respectively. It was found that effectiveness of these fluid loss additives solely relies on achievement of a high adsorbed amount on the surface of cement. At elevated temperature (100 C), CaAMPS V R -N,Ndimethyl acrylamide copolymer (CaAMPS V R -co-NNDMA) exhibits reduced adsorption and hence decreased fluid loss control of the cement slurry. The reason behind this behavior is poor calcium binding capability of the sulfonate anchor groups, which coordinate with calcium atoms present on the mineral surface. Whereas, an increase in the sulfate concentration present in cement pore solution instigates partial coiling of CaAMPS V R -co-NNDMA and causes only a slight influence on the performance of this copolymer. The elevated sulfate content results from thermal degradation of ettringite, a cement hydrate mineral produced during the early stages of cement hydration.Incorporation of minor amounts ($ 1.3 mol %) of maleic anhydride into this copolymer produces a terpolymer, which exhibits higher and more stable adsorption, even at high temperature. This effect is owed to the presence of homopolymer blocks of polycarboxylates distributed along the polymer trunk. On mineral surfaces, they present much stronger anchor groups than sulfonate functionalities, as evidenced by their higher calcium binding capability. Consequently, fluid loss performance of CaAMPS V R -co-NNDMA-co-MA is little affected by temperature. Understanding the influence of temperature on the physicochemical interactions occurring between additives and the mineral surface can help to design more effective admixtures suitable for high temperature applications.

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Section: Resultssupporting

confidence: 76%

Section: Sulfate-dependent Adsorption Of Fla On Silicasupporting

confidence: 74%

Effect of high temperature and the role of sulfate on adsorption behavior and effectiveness of AMPS®‐based cement fluid loss polymers

Lummer

Dugonjic-Bilic

Plank

2011

J of Applied Polymer Sci

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“…Except for feldspar, quartz is the second most abundant mineral in the Earth's crust (Dai & Hu, 2015). The isoelectric point (IEP) of quartz is at pH 2.44, so quartz sand acquires a negative surface charge when pH > pH IEP (Jada, Ait, & Douch, 2006). Under prevailing conditions, except for deeply weathered soils with large contents of Fe and Al oxides, most of the soil components are negatively charged (Xu, Qafoku, Ranst, Li, & Jiang, 2016).…”

Section: Introductionmentioning

confidence: 99%

Characterizing surface electrochemical properties of simulated bulk soil in situ by streaming potential measurements

Liu

Wang

et al. 2019

European J Soil Science

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To evaluate the feasibility of using streaming potential to characterize the surface electrochemical properties of soil in situ, a quartz sand‐packed column was used to mimic the porous structure and architecture of bulk soil. A laboratory‐made apparatus was developed to measure in situ the streaming potential of quartz grains in the packed column under environmentally relevant physicochemical conditions (e.g. electrolyte pH, Fe oxide coating on sand grains, transport of goethite and amorphous Al hydroxide colloids, and the presence of humic acid). The results showed a significant positive relation between the measured streaming potentials and zeta potentials of the quartz grains examined. With decreasing electrolyte pH, the streaming potential of the quartz grains became less negative because of the greater protonation effect. Similarly, when Fe oxide was adsorbed on to the quartz surfaces, the streaming potential of Fe oxide‐coated quartz grains was less negative than that of uncoated quartz grains as a result of charge neutralization between positively charged Fe oxide and negatively charged sand grains. However, the streaming potential of Fe oxide‐coated quartz grains became more negative when humic acid was added to the electrolyte solution because of increased adsorption of negatively charged humic acid. Interestingly, an obvious change of streaming potential in the processes of colloidal goethite and amorphous Al hydroxide transport in the sand‐packed column grains occurred. Given that the overall positive charge of the colloidal amorphous Al was greater than that of goethite colloids, transport of amorphous Al colloids was found to exert a stronger effect on the variation in streaming potential of quartz sand. Taken altogether, the in situ streaming potential results showed that streaming potential can be used as a powerful index to characterize directly the surface electrochemical properties of quartz grains representing bulk soil. Highlights The variation in surface electrochemical properties of bulk soil needs investigation. We measured the streaming potential produced by simulated bulk soil using a laboratory‐made apparatus. The streaming potential of bulk soil varied with the change in environmentally relevant conditions. Streaming potential is a powerful index characterizing the surface electrochemical properties of bulk soil.

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“…Trace element transport can be enhanced when complexes are mobile in the pore water, or it can be retarded when the organic matter is attached to a solid matrix (Temminghoff et al , 1998; Bryan et al , 2005). The fate of humic complexes is a function of various properties, such as the pH and ion composition of the pore water, the physicochemical properties of the TE and HS and the amount of metal ions present in the medium (Jada et al , 2006). Colloidal properties of HS are influenced by metal ions in acidic conditions (Jones & Bryan, 1998).…”

Section: Introductionmentioning

confidence: 99%

Coupled transport of humic acids and copper through saturated porous media

Paradelo

Pérez‐Rodríguez

Fernández‐Calviño

et al. 2012

European J Soil Science

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The mechanism of mediated transport of copper (Cu) by humic acids (HA) in pore water was studied taking account of colloid filtration theory and by means of breakthrough experiments of HA in water‐saturated columns filled with quartz sand. The influence of pH and Cu2+ concentration on Cu–HA binding and retention of Cu–HA complexes in the matrix were analysed with colloid‐surface attachment models. Experiments were performed for differing Cu concentrations (0–20 mg l−1) and pH (5–7). Copper binding to HA increased with pH and Cu2+ addition, according to ion–humic complexation theory. The zeta potential of the HA became less negative with increasing amounts of Cu, which led to less electrostatic repulsion and an increase in the retention of the HA in the column. A kinetic colloid transport model with a random sequential adsorption (RSA) blocking function was well fitted to the experimental breakthrough curves (BTCs). The model accounted for heterogeneity in the adsorption sites in the quartz sand for all of the electrochemical conditions. For pH = 7, the transport of Cu was coupled with the HA, while at pH = 5, the transport occurred mostly as free Cu2+. Models of the influence of dissolved soil organic matter and electrochemical conditions on the fate of trace elements in the soil may contribute to a quantitative exploration of strategies for soil remediation and disposal of contaminated soil containing excessive amounts of trace elements.

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Surface charge and adsorption from water onto quartz sand of humic acid

Cited by 86 publications

References 26 publications

Effect of high temperature and the role of sulfate on adsorption behavior and effectiveness of AMPS®‐based cement fluid loss polymers

Effect of high temperature and the role of sulfate on adsorption behavior and effectiveness of AMPS®‐based cement fluid loss polymers

Characterizing surface electrochemical properties of simulated bulk soil in situ by streaming potential measurements

Coupled transport of humic acids and copper through saturated porous media

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