“…The porous nature of this material imparts a high surface area and porosity, making it suitable for adsorption and filtration. These results are consistent with that previously reported 50 – 52 . The elemental analysis of WTC and ATC was carried out using EDS.…”
Section: Resultssupporting
confidence: 94%
“…The vibration bands for ATC are similar to those of WTC with slight differences in the absorption of some bands, appearing at 461.7, 793.7, 1022 (s), 1666, 3453, and 3640 cm −1 . The spectra of FTIR for WTC and ATC were found to be similar to those previously reported for clays 50 , 52 . Figure 1 SEM images of the clay WTC ( a – c ), ATC ( d – f ).…”
Natural clays are considered a safe, low-cost, and sound sorbent for some pharmaceutical and body care products from water. Metformin (MF) and paracetamol (PA) are of the most consumable drugs worldwide. A portion of natural clay was treated with distilled water, and another part was treated with hydrochloric acid. The water-treated clay (WTC) and the acid-treated clay (ATC) were characterized by scanning electron microscopy-energy dispersive spectroscopy, X-ray diffraction, Fourier transforms infrared spectroscopy, and nitrogen adsorption isotherm. Batch experiments were employed to investigate the influence of contact time and solution parameters on the adsorption of PA and MF on WTC and ATC. 30 min attained the equilibrium for all sorbent-sorbate systems. Both sorbents fitted the pseudo-second-order kinetic model with a preference to the nonlinear fitting, and the mechanism of adsorption partially fitted the liquid-film diffusion model. The PA and MF adsorption on WTC and ATC fitted the Freundlich model in preference to nonlinear fitting. The adsorption of pollutants on both sorbents was spontaneous, exothermic, and physisorption in nature. Even at low concentrations, both WTC and ATC showed efficiency above 80% in removing PA and MF from tab water, groundwater, and Red seawater. These findings nominated natural clay as an alternative to the costly nanomaterials as sorbents for removing pharmaceutical contaminants from water.
“…The porous nature of this material imparts a high surface area and porosity, making it suitable for adsorption and filtration. These results are consistent with that previously reported 50 – 52 . The elemental analysis of WTC and ATC was carried out using EDS.…”
Section: Resultssupporting
confidence: 94%
“…The vibration bands for ATC are similar to those of WTC with slight differences in the absorption of some bands, appearing at 461.7, 793.7, 1022 (s), 1666, 3453, and 3640 cm −1 . The spectra of FTIR for WTC and ATC were found to be similar to those previously reported for clays 50 , 52 . Figure 1 SEM images of the clay WTC ( a – c ), ATC ( d – f ).…”
Natural clays are considered a safe, low-cost, and sound sorbent for some pharmaceutical and body care products from water. Metformin (MF) and paracetamol (PA) are of the most consumable drugs worldwide. A portion of natural clay was treated with distilled water, and another part was treated with hydrochloric acid. The water-treated clay (WTC) and the acid-treated clay (ATC) were characterized by scanning electron microscopy-energy dispersive spectroscopy, X-ray diffraction, Fourier transforms infrared spectroscopy, and nitrogen adsorption isotherm. Batch experiments were employed to investigate the influence of contact time and solution parameters on the adsorption of PA and MF on WTC and ATC. 30 min attained the equilibrium for all sorbent-sorbate systems. Both sorbents fitted the pseudo-second-order kinetic model with a preference to the nonlinear fitting, and the mechanism of adsorption partially fitted the liquid-film diffusion model. The PA and MF adsorption on WTC and ATC fitted the Freundlich model in preference to nonlinear fitting. The adsorption of pollutants on both sorbents was spontaneous, exothermic, and physisorption in nature. Even at low concentrations, both WTC and ATC showed efficiency above 80% in removing PA and MF from tab water, groundwater, and Red seawater. These findings nominated natural clay as an alternative to the costly nanomaterials as sorbents for removing pharmaceutical contaminants from water.
“…For a long time, scholars have emphasized the research in cutting-edge technology and application related to rare earth development. In recent years, three major research topics have emerged in the field of rare earth science, namely, separation and extraction technology [5][6][7], recycling technology [8][9][10][11] and alternative technology [12]. Metals and minerals account for a relatively small proportion of world industrial output, but their supply is critical to the value-added activities of the economy [13].With the development of rare earth industry, many scholars have shifted their researches on rare earth to the economic field and begun to pay attention to the sustainable development of rare earth industry [14][15], rare earth export trade and policies [16][17][18] and regulations [19][20].…”
China is rich in rare earths (RE). However, the exploitation of rare earths not only promoted the social and economic development, but also produced negative environmental externalities, so the relevant departments issued policies and regulations to carry out pollution control work. This paper made a macroanalysis of China firstly. And then this paper took Jiangxi province as the main research area, which compared with Inner Mongolia, Guangdong, Sichuan and Fujian. This paper used the method of non-radial SBM to measure policy execution efficiency. Based on calculating the social and economic development indicator, economic development and social development indicator, this paper explored the feedback correlation of policy execution efficiency and the development of society and economy by grey relational analysis. The results showed that China reduced its dependence on rare earth resources. However, the efficiency of policy implementation needs to be improved. Effective implementation of rare earth industry policy has a feedback effect on social and economic development. From the perspective of case analysis, the implementation efficiency of vegetation destruction policy in Jiangxi province is higher than that of air pollution policy. The overall policy implementation efficiency of Jiangxi province has a strong feedback effect on the overall level of social and economic development, among which the air pollution and water pollution policy implementation efficiency has a relatively obvious feedback effect on social and economic development.
“…Various soils [13], montmorillonite nanoclay [14], HKUST-1 framework [15] and chert rocks [16] were used as sorbents for Ce(III) from aqueous solutions.…”
In this study, Acrylamide (AAM), Itaconic acid (IA) and nano TiO2 were copolymerized using gamma irradiation with 60Co γ-rays at a dose of 25 KGy to form a novel nanocomposite; Poly(acrylamide-co-Itaconic acid/TiO2) (P(AAM-co-IA/TiO2)) for Ce(III) sorption from monazite leachate. P(AAM-co-IA/TiO2) nanocomposite is characterized by different physicochemical techniques. The optimum pH for the sorption process at 298 K is 6 and the equilibrium attained after 60 min. Different kinetics and isothermal models is applied. The monolayer adsorption capacity is 76.04 mgg-1 at 298 K. The sorption reaction follows a pseudo−2nd - order mechanism. The process is spontaneous and endothermic.
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