Chia Nan University of Pharmacy & Science Institutional Repository:Item 310902800/31076
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    標題: Adsorption of Sulfur Compounds from Diesel with Ion-Impregnated Activated Carbons
    作者: Chen, Teng-Chien
    Agripa, Michelle L.
    Lu, Ming-Chun
    Dalida, Maria Lourdes P.
    貢獻者: Met Ind Res & Dev Ctr
    Univ Philippines, Dept Chem Engn
    Chia Nan Univ Pharm & Sci, Dept Environm Resources Management
    關鍵字: oxidative desulfurization
    removal
    bentonite
    zeolites
    surface
    copper
    日期: 2016-05
    上傳時間: 2018-01-18 11:41:14 (UTC+8)
    出版者: Amer Chemical Soc
    摘要: The adsorption of benzothiophene sulfone (BTO) and dibenzothiophene sulfone (DBTO) from model diesel fuel were evaluated using granular activated carbon (GAC) and modified activated carbon. Modified activated carbon was impregnated with metal ions, Cu2+, Fe3+, and Ni2+, and the effect on its adsorption characteristics was determined. Adsorption performance was investigated using batch process at room temperature and agitation speed of 120 rpm. Results indicated a significant increase in the adsorption capacity compared to that of the unmodified GAC. Increasing adsorption capacity followed the order Cu2+/AC < Ni2+/AC < Fe3+/AC for BTO, whereas for DBTO, increasing order is Ni2+/AC < Fe3+/AC < Cu2+/AC. Evaluation of equilibrium isotherms using Langmuir and Freundlich models yielded a good fit with values of R-2 > 0.90. Adsorption process seemed to proceed in a two-step process. First, a very fast rate for the first few minutes, then a markedly reduced rate until equilibrium is reached. All the adsorbents used have several functional groups present on its surface, and it is the nature of these surface groups that determine the character of these adsorbents.
    關聯: Energy & Fuels, v.30 n.5, pp.3870-3878
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