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      저자 : Susan Roces (검색결과 2 건)
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      • Ultrasound Assisted Oxidative Desulfurization: A Definitive Screening Design Analysis

        Angelo Earvin Sy Choi,Susan Roces,Nathaniel Dugos,Meng-Wei Wan,Hung-Suck Park 한국폐기물자원순환학회 2016 한국폐기물자원순환학회 학술대회 Vol.2016 No.11

        The desulfurization of untreated petroleum oil is required in order to comply with stringent environmental regulations. Ultrasound-assisted oxidative desulfurization (UAOD) is an innovative technology for sulfur removal in order to avoid the environmental hazards associated with the combustion of sulfur compounds in raw diesel oil. In this study, diesel oil is treated through UAOD. The effects of ultrasound time (6-30 min), amplitude (20-60%), phase transfer agent (100-500mg), catalyst dosage (10-500mg), H2O2 concentration (30-50%v/v), organic to aqueous phase (OP:AP) ratio (50:50-90:10) and reaction temperature (30-70℃) were examined. The screening analysis used is the definitive screening design that statistically determines the parameters that have a significant effect on the oxidation of diesel oil. Results indicate that significant factors (p-value < 0.5) where ultrasound time, amplitude, catalyst dosage and reaction temperature; while the phase transfer agent, H2O2 concentration and OP:AP ratio were insignificant (p-value > 0.5) on the response of sulfur conversion in the untreated diesel oil. This study concludes that the essential factors to achieve deep desulfurization in diesel oil include ultrasound time, amplitude, H2O2 concentration and reaction temperature which are key factors in the oxidation of sulfur compounds to achieve low sulfur containing diesel oil.

      • Ultrasound Assisted Oxidative Desulfurization: A Definitive Screening Design Analysis

        ( Angelo Earvin Sy Choi ),( Susan Roces ),( Nathaniel Dugos ),( Meng-wei Wan ),( Hung-suck Park ) 한국폐기물자원순환학회(구 한국폐기물학회) 2016 한국폐기물자원순환학회 추계학술발표논문집 Vol.2016 No.-

        The desulfurization of untreated petroleum oil is required in order to comply with stringent environmental regulations. Ultrasound-assisted oxidative desulfurization (UAOD) is an innovative technology for sulfur removal in order to avoid the environmental hazards associated with the combustion of sulfur compounds in raw diesel oil. In this study, diesel oil is treated through UAOD. The effects of ultrasound time (6-30 min), amplitude (20-60%), phase transfer agent (100-500mg), catalyst dosage (10-500mg), H<sub>2</sub>O<sub>2</sub> concentration (30-50%v/v), organic to aqueous phase (OP:AP) ratio (50:50-90:10) and reaction temperature (30-70℃) were examined. The screening analysis used is the definitive screening design that statistically determines the parameters that have a significant effect on the oxidation of diesel oil. Results indicate that significant factors (p-value < 0.5) where ultrasound time, amplitude, catalyst dosage and reaction temperature; while the phase transfer agent, H<sub>2</sub>O<sub>2</sub> concentration and OP:AP ratio were insignificant (p-value > 0.5) on the response of sulfur conversion in the untreated diesel oil. This study concludes that the essential factors to achieve deep desulfurization in diesel oil include ultrasound time, amplitude, H<sub>2</sub>O<sub>2</sub> concentration and reaction temperature which are key factors in the oxidation of sulfur compounds to achieve low sulfur containing diesel oil.

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