Study of the influence between magnesium ions and calcium ions on the morphology and size of coprecipitation in microemulsion

Wang, Nong; Yang, Lijuan; Chen, Lixuan; Xiao, Rong

doi:10.1049/mnl.2013.0656

Cited by 8 publications

(5 citation statements)

References 36 publications

(26 reference statements)

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“…Simulation did not indicate that magnesium would be removed at pH values of 9 & 10. However, as discussed by Wang et al [60] coprecipitation of magnesium and calcium ions can occur under alkaline conditions. Depending upon the ratio of magnesium to calcium ions various morphologies and sizes of precipitates were observed using electron microscopy imaging.…”

Section: Pre-treatment Using Slaked Lime Additionmentioning

confidence: 96%

Process design of a treatment system to reduce conductivity and ammoniacal nitrogen content of landfill leachate

Scott

Millar

Altaee

2019

Journal of Water Process Engineering

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An innovative combination of computational modelling and laboratory testing was applied to address the challenge of reducing conductivity and ammoniacal nitrogen in landfill leachate.The hypothesis was that accelerated selection of an appropriate treatment process could be achieved by application of new water process engineering software termed AqMB. Several scenarios were investigated incorporating settling ponds, clarifiers, lime softening, ion exchange, pH adjustment and degassing unit operations. Settling ponds reduced the lime demand if a lime softening process was tested, albeit ponds involved greater expense and needed space. Alternately, a clarifier using aluminium chlorohydrate removed suspended solids. Use of a single cation resin bed in series with a strong base anion (SBA) resin column was not able to meet regulatory targets. However, employment of a weak acid cation (WAC) and strong acid cation (SAC) resin combination achieved very low ammoniacal nitrogen levels.To satisfy conductivity limits both a degassing unit and a strong base anion (SBA) resin were also necessary. Bench top testing of actual leachate confirmed that the software predicted the trends in water quality. Final solution conductivity of ca. 250 µS/cm and ammoniacal nitrogen content of <1 mg/l were recorded which were compliant with target values of <1600 µS/cm and <100 mg/l ammoniacal nitrogen. Process economics encompassing power, chemicals, and resin costs were calculated to be A$10.50 per kL leachate.

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Section: Pre-treatment Using Slaked Lime Additionmentioning

confidence: 96%

Process design of a treatment system to reduce conductivity and ammoniacal nitrogen content of landfill leachate

Scott

Millar

Altaee

2019

Journal of Water Process Engineering

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“…The reversed-phase microemulsion method is a new material preparation method developed in recent years [ 37 , 38 ]. It is an oil-in-water (or water-in-oil) dispersion system composed of an oil phase, water phase, and a surfactant.…”

Section: Introductionmentioning

confidence: 99%

Calcium Carbonate@silica Composite with Superhydrophobic Properties

Tian

Bounmyxay

et al. 2021

Molecules

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In this paper, spherical calcium carbonate particles were prepared by using CaCl2 aqueous solution + NH3·H2O + polyoxyethylene octyl phenol ether-10 (OP-10) + n-butyl alcohol + cyclohexane inverse micro emulsion system. Then, nanoscale spherical silica was deposited on the surface of micron calcium carbonate by Stöber method to form the composite material. Scanning electron microscope (SEM), X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Thermogravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS) were used to characterize the morphology and structure of the composite material. It is found that the surface of the composite material has a micro-nano complex structure similar to the surface of a “lotus leaf”, making the composite material show hydrophobicity. The contact angle of the cubic calcium carbonate, spherical calcium carbonate and CaCO3@SiO2 composite material were measured. They were 51.6°, 73.5°, and 76.8°, respectively. After modification with stearic acid, the contact angle of cubic and spherical CaCO3 were 127.1° and 136.1°, respectively, while the contact angle of CaCO3@SiO2 composite was 151.3°. These results showed that CaCO3@SiO2 composite had good superhydrophobicity, and the influence of material roughness on its hydrophobicity was investigated using the Cassie model theory.

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“…The successful preparation of the microemulsions has a strict requirement for the proportions of the ingredients, whereas the selection and design of the microemulsions composition is complex, time-consuming and unpredictable. Owing to the different compositions having different stable ranges of the microemulsions system, it is necessary to study the stability region of the microemulsions system for the wider use [10].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Stable Microemulsions with Different Droplet Size

Hu¹,

Jiaxuan²,

Yeting³

et al. 2019

AJN

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Microemulsion is a widely used technique for preparing nanoparticles. The droplet size in stable microemulsions is a key parameter for limiting the size and shape of the formed nanoparticles. In this paper, the stable microemulsions were synthesized by two titration methods, the water titration method and the co-surfactant titration. Six reagents with different HLB were used as surfactants, including Span-80, E-1302, EL-10, MOA-9, Triton X-114 and OP-10. Quasi ternary phase diagrams of O/W and W/O microemusions with different surfactants were established according to the composition of surfactant, co-surfactant, oil and water. The size of the microemulsions droplets was characterized by using Zetasizer Nano S90. Within the stable micromulsions region, the droplet size was systemically controlled from 1 nm to 120 nm by changing different surfactants and controlling the quality ratio of components. A complex dependence of the droplet size on the water to surfactant ratio and the co-surfactant to surfactant ratio was established. In the stable microemulsions region, the droplets size increases dramatically with increased the water to surfactant ratio and the larger droplet size is obtained with increasing the co-surfactant amount.

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Study of the influence between magnesium ions and calcium ions on the morphology and size of coprecipitation in microemulsion

Cited by 8 publications

References 36 publications

Process design of a treatment system to reduce conductivity and ammoniacal nitrogen content of landfill leachate

Process design of a treatment system to reduce conductivity and ammoniacal nitrogen content of landfill leachate

Calcium Carbonate@silica Composite with Superhydrophobic Properties

Preparation of Stable Microemulsions with Different Droplet Size

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