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RISS 인기검색어
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- 저자 : Khairul Sozana Nor Kamarudin (검색결과 2 건)
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Bhatti, Inamullah,Qureshi, Khadija,Kamarudin, Khairul Sozana Nor,Bazmi, Aqeel Ahmed,Bhutto, Abdul Waheed,Ahmad, Faizan,Lee, Moonyong Elsevier 2016 Journal of natural gas science and engineering Vol.34 No.-
<P><B>Abstract</B></P> <P>This paper presents an innovative method to prepare a stable emulsion liquid membrane (ELM) for high CO<SUB>2</SUB> absorption in a natural gas feed. This new method achieved high throughput at low power consumption. The ELM prepared using this new method was characterized by determining the effects of the concentration of the ELM constituents, emulsification time, and speed on the emulsion droplet size (EDS) and stability. This was followed by a parametric study of the process parameters for CO<SUB>2</SUB> separation from natural gas in a rotating disk contactor (RDC)-based setup to evaluate the performance of a stable ELM. The results suggest that the retention time of the stable ELM in a RDC increases with increasing amount of absorbed CO<SUB>2</SUB>. The results support the fundamental development of the ELM process to achieve a high overall separation efficiency of CO<SUB>2</SUB> removal from natural gas with a relatively small contact time. This is the first parametric study of CO<SUB>2</SUB> absorption from a gas stream in ELM using a RDC as the contracting equipment. The results of the parametric study suggested that the factors of time, TEA concentration and RDC speed have significant effect on the CO<SUB>2</SUB> absorption from natural gas feed. It was identified that 4% TEA in ELM, 30 min operational time and 700 rpm speed of modified RDC system is suitable for maximum CO<SUB>2</SUB> absorption from gas mixture of CO<SUB>2</SUB>/CH<SUB>4</SUB>. Furthermore, the study suggested that the ELM containing 4% TEA can absorb 5.6 kmol/m<SUP>3</SUP> CO<SUB>2</SUB>.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Preparation and characterization of stable emulsion liquid membrane (ELM). </LI> <LI> Parametric study of CO<SUB>2</SUB> absorption from natural gas in rotating disk contactor (RDC). </LI> <LI> Retention time of the stable ELM increases with increasing amount of absorbed CO<SUB>2</SUB>. </LI> <LI> Fundamental development of ELM process for high overall separation efficiency. </LI> </UL> </P>
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Rapid solvothermal synthesis of microporous UiO-66 particles for carbon dioxide capture
배선영,Nabilah Zaini,Khairul Sozana Nor Kamarudin,유계상,김진수,Mohd Roslee Othman 한국화학공학회 2018 Korean Journal of Chemical Engineering Vol.35 No.3
One of the important metal-organic frameworks known as UiO-66 has received significant attention recently due to its unprecedented chemical and thermal stability, with exceptionally high surface area. We prepared UiO-66 particles by a rapid solvothermal method which took only 30min at 120 oC to prepare, compared to the previous work which took longer than 12 h. Changing the precursor’s concentration ratio from 0.5 to 1.5 and reaction temperature from 80 oC to 140 oC resulted in the increase of UiO-66 particle size from 30 to 150 nm. The highest surface area of ca. 1,300m2/g was achieved at concentration ratio of 1 and temperature of 120 oC with bi-modal pore sizes of ca 0.60 nm and 1.25 nm, respectively. The UiO-66 particles with the highest surface area were then employed to capture carbon dioxide from a binary gas mixture. Results from CO2 adsorption capacity measurement using UiO-66 indicate that the adsorbent was capable of capturing 1.3611mmol/g at pressure of 1.5-1.7 bar and flowrate of 300 cm3/min.
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