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Magnone, Edoardo,Kim, Shin Dong,Park, Jung Hoon Elsevier 2018 Microporous and mesoporous materials Vol.270 No.-
<P><B>Abstract</B></P> <P>This study was aimed to evaluate the hydrogen sulfide (H<SUB>2</SUB>S) removal efficiency of an economic iron hydroxide-based adsorbent from simulated biogas mixture with an H<SUB>2</SUB>S concentration range of 500–10300 ppm. The properties of these porous materials such as crystal structures, surface patterns, surface area, pore volume and pore size were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and BET measurements. The H<SUB>2</SUB>S adsorption capacity (Ads<SUP>cap</SUP>) is nearly independent of the drying temperature of hydroxide-based adsorbent over the range of temperatures tested (100–200 °C) as well as relative humidity (0–80%) under equal conditions of H<SUB>2</SUB>S concentration. In addition, the experimental results revealed that the Ads<SUP>cap</SUP> increased exponentially from 23.3 to 48.7 wt% with the increased retention time from to 0.5–52.9 s and decreasing space velocity from 7433 to 68 h<SUP>-1</SUP>. At the same time, Ads<SUP>cap</SUP> increased linearly from 20.57 to 35.18 wt% with the increasing H<SUB>2</SUB>S concentration from 500 to 10300 ppm.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Iron hydroxide-based adsorbent with high hydrodesulfurization properties was developed. </LI> <LI> Iron hydroxide-based adsorbents were used to remove of hydrogen sulphide from biogas. </LI> <LI> Drying temperature no effects the H<SUB>2</SUB>S adsorption capacity. </LI> <LI> Relative humidity of the inflow biogas no effects the H<SUB>2</SUB>S adsorption capacity. </LI> <LI> H<SUB>2</SUB>S adsorption capacity increases as H<SUB>2</SUB>S concentration increases. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Carbonaceous Aerosols Generated from Wood Charcoal Production Plants in the South Korea Context
( Edoardo Magnone ),( Seong-Kyu Park ),( Jung Hoon Park ) 한국목재공학회 2019 목재공학 Vol.47 No.3
Herein, a case study discussing the effect of carbonaceous aerosol pollution, which is emitted during the charcoal kiln manufacturing processes or carbonization processes, on the atmospheric environment is presented . In South Korea, in situ analysis of different charcoal production plants specialized in the production of charcoal sauna indicate that the emitted organic carbon (OC) and elemental carbon (EC) aerosols are significantly influenced by the nature of the biomass and technological processes, i.e., treatment or emissions abatement systems for the exhaust effluent gases. In detail, total carbon (TC), which is calculated as the sum of OC and EC emission factors, varied widely from a charcoal production site to another ranging from 21.8 to 35.8 gTC/kg-oak, where the mean value for the considered production sites was approximately 28 gTC/kg-oak (N = 7 and sum = 196.4). Results indicate that the emission factors from a modern charcoal production process in South Korea are quantitatively lower in comparison with the traditional kiln. This study aims to propose advanced wood processes for the production of charcoal from the viewpoint of environmental protection policy and green engineering.
Edoardo Magnone,이홍주,신민창,박정훈 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.100 No.-
The present study has endeavored to establish the relations between the CO2 absorption properties offivesingle amine-based absorbents including monoethanolamine (MEA), diethylamine (DEA), N-methyl-diethanolamine (MDEA), 2-amino-2-methyl-1-propanol (AMP), and piperazine (PZ), and their sixteenbinary mixtures in the blended amine-based absorbents for CO2 chemical absorption using ahydrophobic modified ceramic hollowfiber membrane contactor (HFMC). Keeping all other variablesconstant, the CO2 absorption properties of single and blended amine-based absorbents for CO2 chemicalabsorption using hydrophobic modified ceramic HFMCs are highly dependent on their chemical natureand concentration. MEA and DEA have the highest CO2 absorptionflux among the single amine solutions. For the CO2 absorption in the blended amine-based absorbents, the replacement of MDEA with 20 wt%DEA increased the CO2 chemical absorption from 1 104 mol/m2 s to about 7 104 mol/m2 s. AqueousMDEA blended DEA reaches a percentage of increase of CO2 absorptionflux over 500% in comparison withthe corresponding aqueous solution of single MDEA.
Magnone, Edoardo,Kim, Min-Kwang,Lee, Hong Joo,Park, Jung Hoon Elsevier 2019 Ceramics international Vol.45 No.3
<P><B>Abstract</B></P> <P>α-Al<SUB>2</SUB>O<SUB>3</SUB> hollow fibers (AlHF)-supported TiO<SUB>2</SUB> photocatalysts were prepared by a single dip-coating process. In order to tentatively improve the adhesion strength of TiO<SUB>2</SUB> photocatalysts on the surface of microstructured AlHFs, the use of an adhesion promoter as a Silica-based binder (SBB) was further studied. TiO<SUB>2</SUB> powders, as well as AlHF-supported TiO<SUB>2</SUB> and SBB AlHF-supported TiO<SUB>2</SUB> photocatalysts, were investigated for the photodegradation of the Methylene Blue (MB) under UV irradiation. MB was selected as a model of organic pollutant. AlHF-supported TiO<SUB>2</SUB> photocatalysts show higher photo-catalytic activity than TiO<SUB>2</SUB> powders. Best performance was achieved with an SBB AlHF-supported TiO<SUB>2</SUB> photocatalysts, whereby a degradation ratio of about 65% was obtained.</P>