Adsorption of Sulfur Compounds from Diesel with Ion-Impregnated Activated Carbons

doi:10.1021/acs.energyfuels.6b00230

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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
顯示於類別:	[環境資源管理系(所)] 期刊論文

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