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Efficient removal of methylene blue dye from aqueous media using Fe/Si, Cr/Si, Ni/Si, and Zn/Si amorphous novel adsorbents

机译:使用Fe / Si,Cr / Si,Ni / Si和Zn / Si非晶新型吸附剂高效除去亚甲基蓝色染料从含水介质中除去亚甲基蓝染料

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In this paper, non-crystalline novel adsorbents composed of sodium, oxygen, silicon, and other metals such as iron, nickel, chromium, or zinc were produced using the gelation method. The amorphous products were characterized using various instruments, for example, XRD, FT-IR, FE-SEM, EDS, and BET. The BET affirmed that the amorphous products contain mesopores, micropores, and macropores. Broad XRD peak in the range 2??=?20–40 was gotten for every one of the synthesized products. Thus, the synthesized products were non-crystalline. The FE-SEM images showed that every one of the synthesized products consists of irregular shapes. FT-IR confirmed the presence of TOT bending, TOT symmetric, and TOT asymmetric vibrations (T?=?Si, M) (M?=?Fe, Ni, Cr, or Zn). Also, methylene blue dye was proficiently removed from aqueous media utilizing the amorphous products. Besides, the removal of methylene blue dye from aqueous media was assessed via studying some variables, for example, the concentration of dye, time, adsorption pH, temperature of dye solution, and reusability of amorphous products. In addition, the removal processes were physical, exothermic, spontaneous, and follow both of the pseudo-first-order kinetic model and Freundlich isotherm. Moreover, the amorphous products have adsorption capacity values in the range from 36.51 to 53.79?mg/g. Finally, the amorphous products were regenerated then reused without changing their efficiency.
机译:本文采用凝胶化方法制备由钠,氧,硅等金属如铁,镍,铬或锌制成的非结晶新型吸附剂。使用各种仪器,例如XRD,FT-IR,Fe-SEM,EDS和BET表征无定形产品。 BET肯定是无定形产物含有中孔,微孔和大孔。宽XRD峰值在2 ?? = 20-40中得到的每一个合成产品。因此,合成产物是非结晶的。 FE-SEM图像显示,每个合成产品包括不规则形状。 FT-IR确认了TOT弯曲,对称和TOT不对称振动的存在(T?=ΔSi,m)(m?=?fe,Ni,Cr或Zn)。而且,利用无定形产物从含水介质中纯粹地除去亚甲基蓝色染料。此外,通过研究一些变量,例如,通过研究一些变量来评估来自含水介质的亚甲基蓝色染料,例如染料的浓度,吸附pH,染料溶液温度和无定形产物的可重用性。此外,去除过程是物理,放热,自发性,并遵循伪第一阶动力学模型和Freundlich等温线。此外,无定形产物的吸附能力值在36.51至53.79Ω·mg / g的范围内。最后,再生无定形产物然后重复使用而不改变它们的效率。

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