Comparative evaluation of biopolymers and synthetic polymers as hydroxyapatite dispersants for industrial water systems

Amjad, Z.; Kweik, A.; Bickett, K.

doi:10.17675/2305-6894-2015-4-3-269-283

Cited by 4 publications

(4 citation statements)

References 15 publications

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“…The use of -COOH containing homopolymers such as poly(acrylic acid), PAA; poly(maleic acid), PMA; poly(aspartic acid), PAS; poly(itaconic acid) as scale inhibitors and dispersants for various scale forming salts and particulate matter has been well documented [20,21]. Results of these studies suggest that performance of these polymers depends on various factors including molecular weight (MW), polymerization solvent, and end group.…”

Section: Homopolymers Performancementioning

confidence: 99%

Maleic acid-based copolymers as silica scale control agents for aqueous systems

Amjad

2016

Int. J. Corros. Scale Inhib.

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The inhibition of silica polymerization by homo-and copolymers containing different functional groups has been studied in aqueous solution. It has been found that silica polymerization reaction is preceded by an induction period that is dependent on silica supersaturation. The investigation in the presence of additives indicates that silica polymerization strongly depends on the additive composition, ionic charge, and molecular weight. This study also presents comparative performance data on bio-and synthetic polymers.

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Section: Homopolymers Performancementioning

confidence: 99%

Maleic acid-based copolymers as silica scale control agents for aqueous systems

Amjad

2016

Int. J. Corros. Scale Inhib.

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“…The incompatible blending of formation water and salt water can significantly hinder increased oil recovery by causing the production of scales such as (CaCO 3 , CaSO 4 , BaSO 4 , SrSO 4 ) . At many production locations, a thick layer may develop, leading to problems like partial or whole duct blockages, which would result in a large rise in production costs. , The composition of ions in water and the degree of supersaturation with ions are the two main factors affecting salt precipitation. − Furthermore, supersaturated water can contain various ions, resulting in the crystallization of several salts at the same time …”

Section: Introductionmentioning

confidence: 99%

Nano-Engineered Polyaspartate-Coated Magnetite Scale Inhibitor: A Sustainable Solution for Efficient Gypsum Scale Control in Oilfield Operations

Abdelaal,

Kelland,

Castro

et al. 2024

ACS Appl. Eng. Mater.

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Scaling in oilfield applications poses considerable challenges, as it can lead to a reduction in production rates, heightened operational costs, and adverse environmental impacts when hazardous chemicals are used to prevent scale precipitation. This study addresses these issues through a pioneering approach involving green scale inhibitors (SIs). The method revolves around coating the surface of magnetite (Fe3O4) nanoparticles with a promising biodegradable inhibitor polymer, namely, sodium polyaspartate (PASP). This inventive procedure not only promotes environmentally friendly inhibition but also allows for the magnetic recycling of the inhibitor particles. The reusability of the green inhibitor, demonstrating up to 100% inhibition performance, signifies a noteworthy reduction in chemical discharge associated with scale inhibitors. In this project, the magnetic nanoparticles Fe3O4 were synthesized using the co-precipitation method, and the resulting nanomagnetic inhibitor, polyaspartate-coated trisodium citrate-coated magnetite (Fe3O4@TSC@PASP), was characterized through various techniques including X-ray diffraction (XRD), magnetometry, high-resolution transmission electron microscope (HR–TEM), Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA). In addition, the average size of Fe3O4@TSC@PASP was around 10 nm and maintained a magnetization of 13.8 emu/g postcoating. Leveraging the larger surface area provided by the magnetic nanoparticles, the inhibitor retained advantageous magnetic characteristics, facilitating efficient recycling. To evaluate its efficiency in inhibiting the gypsum scale (CaSO4·2H2O), the nanoparticles were subjected to both static jar tests and dynamic tube blocking tests. The magnetic nanocomposite scale inhibitor Fe3O4@TSC@PASP exhibited complete inhibition performance at a concentration of 1 ppm in the dynamic test and full inhibition at 2 ppm in the static test. Further scale inhibition analysis was conducted using a scanning electron microscope (SEM), revealing morphological changes in the gypsum crystal scale formation. The recyclability concept was validated, demonstrating that the magnetic nanoparticle scale inhibitor could be reused up to four times, maintaining a 100% inhibition performance in the fourth cycle. This research underscores the potential of the synthesized nanomagnetic inhibitor in providing an efficient and recyclable solution for addressing gypsum scale-related challenges in various applications.

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“…Some studies have investigated celestite growth and precipitation rates at various experimental conditions without scale inhibitors. ,− Other studies also reported the effect of scale inhibitors on the precipitation rate of celestite under mild conditions (around room temperature, low ionic strength). ,− He et al (1995b) studied the t ind of celestite crystallization without and with two phosphonate inhibitors and one carboxylate inhibitor with the background of 1 M NaCl and T = 25–90 °C . However, no quantitative models were developed beyond these experimental results to evaluate the MIC needed for celestite scale control, making accurate celestite scale management hard to achieve.…”

Section: Introductionmentioning

confidence: 99%

Semiempirical Model for Predicting Celestite Scale Formation and Inhibition in Oilfield Conditions

Zhao

Dai

et al. 2021

Energy Fuels

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Mineral scale formation has become a serious problem during various energy production processes, such asgeothermal energy, power production (cooling towers), or oil and gas operations. Most scales are treated with threshold scale inhibitors. Several crystallization and inhibition models have been reported to predict the minimum inhibitor concentration (MIC) needed to control the barite and calcite scales. Recently, more attention has been paid to the formation of celestite scales in the oilfield. However, no models have been developed to predict the MIC needed for celestite scale control. In this study, the induction time of celestite under wide ranges of celestite saturation index (SI = 0.7–1.9), temperature (T = 25–90 °C), ionic strength (IS = 1.075–3.075 M), and pH (4–6.7) without and with one phosphonate inhibitor (diethylenetriamine penta(methylene phosphonic acid), DTPMP) and two polymeric inhibitors (phophinopolycarboxylate, PPCA and polyvinyl sulfonate, PVS) was measured by a laser apparatus. Based on our experimental results and literature data, a new semiempirical celestite crystallization and inhibition model has been developed based upon readily available parameters such as celestite SI (or other brine compositions) and T. Good agreement between the experimental results and calculated results from the model was found. Using this semiempirical model, the MIC needed for three commonly used inhibitors, DTPMP, PPCA, and PVS, on celestite scale control can be predicted over extensive production conditions. The developed model can fill the knowledge gap in scale management strategies for celestite in the produced waters.

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Comparative evaluation of biopolymers and synthetic polymers as hydroxyapatite dispersants for industrial water systems

Cited by 4 publications

References 15 publications

Maleic acid-based copolymers as silica scale control agents for aqueous systems

Maleic acid-based copolymers as silica scale control agents for aqueous systems

Nano-Engineered Polyaspartate-Coated Magnetite Scale Inhibitor: A Sustainable Solution for Efficient Gypsum Scale Control in Oilfield Operations

Semiempirical Model for Predicting Celestite Scale Formation and Inhibition in Oilfield Conditions

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