Coping with Emerging Contaminants in Potable Water Sources

Gall, Heather E.; Mina, Odette

doi:10.1007/978-3-319-06563-2_3

Cited by 2 publications

(2 citation statements)

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“…Crystalline phases of products and precursors were characterized using X-ray diffraction (XRD) with the aid of Bruker, Focus D8 X-ray diffractometer (CuKα radiation wavelength, λ = 0:1540562 nm and scanning rate of 1 mn -1 ). The average crystallite size of MgO products was calculated using the Debye-Scherrer equation to the major XRD peak of MgO, as given in Equation (1).…”

Section: Synthesis Of Nanosphericalmentioning

confidence: 99%

“…Access to potable water is becoming a luxury due to exploitation of the limited amount of freshwater in Earth's freshwater reserves [1,2]. Among all the major contributors to water pollution, industrial wastewater serves a major role towards the crisis by adding complex organic molecules which has the potential to be toxic to all ecosystems, including human [1][2][3]. With the growing demand for the fashionable and advanced textile products around the globe, it has become an inevitable fact that various forms of industrial dyes are being used in apparels industry.…”

Section: Introductionmentioning

confidence: 99%

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Urea-Assisted Synthesis of Nanospherical and Plate-Like Magnesium Oxides for Efficient Removal of Reactive Dye Wastes

Randiligama

Mantilaka

Palihawadana

2020

Journal of Nanomaterials

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Nanospherical and plate-like magnesium oxide has been successfully synthesized by urea precipitation method for the first time. A magnesium oxide precursor was prepared by heating MgCl2 solution with urea for 12 hours at 90°C. Then the calcined precursor was analysed by Scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), and high-resolution transmission electron microscopy (HR-TEM). In the presence of the nonionic surfactant Triton X-100 in the system, the reaction yielded in nanospheres of MgO contrast to the plate-like MgO in the absence of the surfactant. The precursor and the calcined product appeared in similar morphologies under SEM in both cases with a slight reduction of size upon calcination. The final product was confirmed as MgO using XRD and FT-IR spectroscopic methods. In TGA, both samples showed similar mass loss values upon elimination of adsorbed water molecules and decomposition of the precursor into MgO; however, the nanospherical MgO sample showed an additional weight loss due to elimination of the associated surfactant molecules. The efficiency of removing reactive dye wastes was quantified by UV-visible spectroscopy using reactive yellow dye. Plate-like MgO showed a porous structure under HR-TEM analysis in the dye adsorption study, and both plate-like and nanospherical MgO showed good dye adsorption capability. MgO nanospheres showed higher capacity of dye adsorption compared to plate-like MgO, explained by its higher surface are-to-volume ratio, while the plate-like MgO also performed well due to having a nanoporous structure. These nanomaterials will offer high potential in purifying waste water and as well in recovering expensive dye products.

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Section: Synthesis Of Nanosphericalmentioning

confidence: 99%