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      저자 : Shaoming Yu (검색결과 2 건)
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      • KCI등재

        Adsorption of phenol and 1-naphthol onto XC-72 carbon

        Shaoming Yu,Liming Zuo,Leilei Cheng,Erling Du 한국화학공학회 2013 Korean Journal of Chemical Engineering Vol.30 No.3

        XC-72 carbon (XC-72) was characterized by SEM, XPS, N2 adsorption-desorption, particle size distribution analysis and potentiometric acid-base titration. The adsorption of phenol and 1-naphthol on XC-72 was studied as a function of contact time, pH, adsorbent content and temperature. The kinetic adsorption data were described well by the pseudo-second-order model. The adsorption isotherms of phenol were described well by Freundlich model, while the adsorption isotherms of 1-naphthol were fitted well by Langmuir model. The results demonstrated that XC-72 had much higher adsorption capacity for 1-naphthol than for phenol. The adsorption thermodynamic data were calculated from the temperature-dependent adsorption isotherms at T=293, 313 and 333 K, and the results indicated that the adsorption of phenol was an exothermic process, whereas the adsorption of 1-naphthol was an endothermic process. XC-72 is a suitable material for the preconcentration of phenol and 1-naphthol from large volumes of aqueous solutions.

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        In-situ synthesis of hydrotalcite and its application in separation of simulated radionuclide Eu(III)

        Caicun Zha,Shaoming Yu,Xiaoli Sun,Nai Li 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.10

        The simulated radionuclide Eu(III) was separated effectively by using the in-situ synthesis of hydrotal-cite. The optimal conditions of pH, Mg/(Eu+Al) molar ratio, and initial Eu(III) concentration for separating Eu(III)and achieving a single hydrotalcite phase were investigated systematically and determined to be 10, 3.0, and 600 mgL−1, respectively. Under the optimal separation conditions, the removal percentage of Eu(III) reached 99.8%. The char-acterization results suggested that Eu(III) was incorporated into the crystal lattice of hydrotalcite completely and fullyimmobilized in the structure of spinel by calcining, and the morphology of the synthetic hydrotalcite containing Eu(III)was in hexagonal platelet-like sheet.

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