Go to the main menu
Skip to content
Go to bottom
REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Applied Chemistry for Engineering
Journal Basic Information
Journal DOI :
The Korean Society of Industrial and Engineering Chemistry
Editor in Chief :
Volume & Issues
Volume 21, Issue 6 - Dec 2010
Volume 21, Issue 5 - Oct 2010
Volume 21, Issue 4 - Aug 2010
Volume 21, Issue 3 - Jun 2010
Volume 21, Issue 2 - 00 2010
Volume 21, Issue 1 - 00 2010
Selecting the target year
Biological Removal of Nitrogen Oxides from Combustion Flue Gases
Lee, Ki-Say ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 243~251
Nitrogen oxides (NOx) in combustion flue gas are currently mitigated by chemical processes such as catalytic reduction, absorption and adsorption. However, development of environmentally sustainable biological processes is necessary in the near future. In this paper, the up-to-dated R&D trend of biological methodologies regarding NOx removal was reviewed, and their advantages and disadvantages were discussed. The principles and applications of bacterial system including nitrification and denitrification and photosynthetic microalgae system were compared. In order to enhance biological treatment rate and performance, the insoluble nitric oxide (NO) should be first absorbed using a proper solubilization agent, and then microbial degradation or fixation is to be followed. The use of microalgal system has a good prospect because it can fix
and NOx simultaneously and requires no additional carbon for energy source.
Morphology and Miscibility of PMMA/SMA/Clay Nanocomposites
Lee, Min-Ho ; Min, Byong-Hun ; Kim, Jeong-Ho ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 252~257
Nanocomposites of blends of polymethyl methacrylate (PMMA) and poly (styrene-co-maleic anhydride) (SMA) containing natural and organically modified montmorillonite clays (
15A) were prepared by solution mixing. Effect of clay on the miscibility, morphology and thermal properties of nanocomposites was investigated. DSC results showed that the addition of clay improved the miscibility of PMMA/SMA blends. Specifically, clay 15A was observed to be most effective than other clays in all nanocomposites regardless of MA contents of SMAs tested. Dispersion of clays was investigated using XRD and TEM and the nanocomposites containing clay 15A again showed the best clay dispersion than the ones with other clays.
Assessment of CFD Estimation Capability for the Local Loss Coefficients of Sudden Contraction and Expansion
Kim, Hyun-Jung ; Park, Jong-Pil ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 258~264
Most of fluid systems, such as P&ID in ships, power plants, and chemical plants, consist of various components. The components such as bends, tees, sudden-expansions, sudden-contractions, and orifices contribute to overall pressure loss of the system. The local pressure losses across such components are determined using a pressure loss coefficient, k-factor, in lumped parameter models. In many engineering problems Idelchik's k-factor models have been used to estimate them. The present work compares the k-factor based on CFD calculation against Idelchik's model in order to confirm whether a commercial CFD package can be used for pressure loss coefficient estimation of complex geometries. The results show that RSM is the best appropriate for evaluating pressure loss coefficient. Commercial CFD package can be used as a tool evaluating k-factor even though the accuracy is influenced by a turbulence model.
Electrosorption Behavior of
/Activated Carbon Composite for Capacitive Deionization
Lee, Jeong-Won ; Kim, Hong-Il ; Kim, Han-Joo ; Park, Soo-Gil ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 265~271
Desalination effects of capacitive deionization (CDI) process was studied using
/activated carbon electrode. In order to enhance the wettability of electrode and decrease a electrode resistance,
was coated on activated carbon. By means of
coating on activated carbon, electric double layer to adsorption content in CDI process was increased. It was identified from TEM, XRD, and XPS that the activated carbon based on
composite was fabricated successfully by means of sol-gel method. As a results of cyclic voltammetry and impedance, it was identified that
/activated carbon electrode has more electric double later capacitance and less diffusion resistance than activated carbon. Also charge-discharge and ion conductivity profiles showed that the ion removal ratios of
/activated carbon electrode in NaCl electrolyte of
more increased about 39% than that of activated carbon. In conclusion it was possible to identify that the carbon electrode coated
as electrode material was more effective than raw carbon electrode.
Carbon Dioxide Fixation using Spirulina Platensis NIES 39 in Polyethylene Bag
Kim, Young-Min ; Kim, Ji-Youn ; Lee, Sung-Mok ; Ha, Jong-Myung ; Kwon, Tae-Ho ; Lee, Jae-Hwa ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 272~277
To replace current expensive photobioreactor, this study was conducted to develop low-cost photobioreactor made of polyethylene bag. In previous study, optimal culture conditions of Spirulina platensis NIES 39 have been established, and based on these, the study of biological carbon dioxide fixation has been conducted. The maximum growth was the biomass 2.677 g/L at conditions of 10%
, 0.1 vvm. It was shown that
was 4.056 g
was 0.312 g
/L/day. But, compared with the data at conditions of 5%
, 0.1 vvm,
was shown 52.372% which is half of it. Regarding the effect of
following illumination, the growth revealed that the input conditions, for 10 min per 3 h, were excellent in the light.
in absent light.
concentration and flow rate were 5%
, 0.1 vvm, respectively. Finally, the addition of
was ineffective in the absence of light.
A Study Based on Molecular Orbital Theory of Polymerization of Oxolane High Explosives
Kim, Joon-Tae ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 278~283
The cationic polymerization of oxolane high explosives which have pendant explosive groups such as azido, nitrato and hydrazino is investigated theoretically using the semiempirical MINDO/3, MNDO and AM1 methods. The nucleophilicity and basicity of oxolane high explosives can be explained by the negative charge on oxygen atom of oxolane. The reactivity of propagation in the polymerization of oxolane can be represented by the positive charge on carbon atom and the low LUMO energy of active species of oxolane. The reaction of the oxolane high explosives in oxonium ion form to the open chain carbenium ion form is expected by computational stability energy (17.950~30.197 kcal/mol) of the oxonium ion and carbenium ion favoring the carbenium ion. The relative equilibrium concentration of cyclic oxonium ion and carbenium ion is found to be a major determinant of mechanism, owing to the rapid equilibrium of these catoinic forms. Based on calculation, in the prepolymer propagation step,
mechanism will be at least as fast as that for
Absorption Characteristics in Aqueous
Solution with Homopiperazine
Kim, Young-Eun ; Nam, Sung-Chan ; Lee, Young-Taek ; Yoon, Yeo-Il ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 284~290
In this study, as one of the carbon dioxide (
) adsorbents the aqueous potassium carbonate (
)/promoter mixtures were investigated. Equilibrium partial pressure (
) and pressure change were measured by using VLE (Vapor-liquid equilibrium) equipment in the mixture solution at 60 and
, respectively. Absorption capacity was estimated in the semi-batch absorption apparatus at 40, 60 and
. We proposed to use homopiperazine (homoPZ), cyclic diamine compound as a promoter of
solution, to prevent crystalline formation and increase absorption capacity of aqueous
solution. The absorption capacity of
/homoPZ was compared with MEA,
/piperazine (PZ). Based on the results, we found that the mixture solution containing homoPZ had lower equilibrium partial pressure than that of
solution and the absorption rate was approximately 0.375-times faster at
, 0.343-times faster at
than that of aqueous
solution without homoPZ.
/homoPZ solution showed excellent CO2 loading capacity compared with MEA solution at
Conversion Efficiency of Dye-sensitized Solar Cells Using Multi-layered
Byun, Hong-Bock ; Yun, Tae-Kwan ; Bae, Jae-Young ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 291~294
Recently, the design of the multi-layered
electrodes has been attracted for high efficiency of dye-sensitized solar cells. In this study, conversion efficiency of the multi-layered
electrodes was investigated by using small and large
powders were prepared by
hydrolysis. Differently sized
powders of which the average diameter was 7.6 and 18 nm were obtained by controlled calcination temperature. It was confirmed that multi-layered
electrodes significantly influence short-circuit current (Jsc) and also show higher conversion efficiency than dye-sensitized solar cells consisting of each particles.
Isobaric Vapor-Liquid Equilibrium of 1-propanol and Bromochloromethane System at Subatmospheric Pressures
Jang, Hoi-Gu ; Kang, Choon-Hyoung ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 295~300
A binary system of 1-propanol and bromochloromethane which exhibits an azeotropic point and a considerable nonideal phase behavior probably due to the large boiling point difference is not amenable in the actual chemical processes such as the distillation tower and absorber. Therefore, experimental data of phase behavior data of this mixture are indispensable in understanding the inherent thermodynamic characteristics for an efficient application of the system in the industrial processes. In this work, the isobaric vapor-liquid equilibrium of a binary mixture consisting of 1-propanol and bromochloromethane was measured by using a recirculating equilibrium cell at various pressures ranging from 30 to 70 kPa. The measured VLE data were correlated in a satisfactory manner by using the UNIQUAC and NRTL models along with the thermodynamic consistency test based on Gibbs/Duhem equation. In addition, the excess molar volume of the mixture was also measured by using a vibrating densitometer and correlated with a Redlich-Kister polynomial.
Development of Alkaline Degreasing Agent for Electroplating Pretreatment Process
Lee, Seung-Bum ; Joeng, Koo-Hyung ; Lee, Jae-Dong ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 301~305
In this study, the alkaline degreasing agent was developed for electroplating pretreatment process, and the efficiency and the durability was predicted. The alkaline deeping degreasing agent was prepared by blending sodium hydroxide (NaOH), sodium carbonate (
), sodium silicate (
), and sodium lauric sulfate (SLS). The performance tests of the degreasing agent were evaluated in the
of the degreasing temperature and 30~40 min of the degreasing time. The efficiency and durability of the prepared degreasing agent were tested by the waterdrop formation test and Hull-cell plating test. The optimum ratio of alkaline degreasing agent was NaOH (30 g/L) + SLS (6.0 g/L) +
(2.0 g/L) +
(40 g/L). Also, the optimum degreasing conditions were
of the degreasing temperature and 35 min of the degreasing time.
Determination of Visible Marker in Petroleum Using HPLC
Lim, Young-Kwan ; Kim, Dong-Kil ; Yim, Eui-Soon ; Shin, Seong-Cheol ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 306~310
Petroleum visible markers (dye) have been used to distinguish different fuel classes and to prevent illegal mixing. It is difficult to recognize the real color of visible marker when the small amount of petroleum product was mixed in another fuel oil. In this study, we determined the two wavelengths (370 nm, 645 nm) which detect all Korean petroleum visible marker using UV/Vis spectrophotometer. Then we analyzed the visible marker using high performance liquid chromatography (HPLC) in two wavelength detectors. Also, we optimized the analytic method for petroleum visible marker in illegal mixed fuel oil.
The Effects of Size Reduction and pH on Dispersion Characteristics of ATO (Antimony-Doped Tin Oxide)
Kim, Jin-Hoon ; Jeong, Eui-Gyung ; Lee, Sang-Hun ; Han, Won-Hee ; Lee, Young-Seak ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 311~316
This study aimed to prepare antimony-doped tin oxide (ATO) dispersion with high stability. The methods to achieve this goal were sought by investigating the changes of ATO particle size, size distribution, dispersion property as wet ball milling treatment time increased. And the changes of wet ball milled ATO dispersion property were also investigated, as pH increased. The changes of ATO particle size and size distribution, according to wet ball milling treatment time were evaluated with laser diffraction particle size analyzer and scanning electron microscope (SEM). The changes of ATO dispersion property, as wet ball milling treatment time and pH increased, were evaluated with zeta potential analysis and Turbiscan. By 60 min wet ball milling treatment time, ATO particle size decreased and size distribution became narrower, as the treatment time increased. After 60 min milling, the ATO particle size decreased to less than 30% of the initial size and the size distribution was narrowed to
. However, more than 60 min milling, ATO particles aggregated and the particle size increased. ATO dispersion stability also increased as the treatment time and pH increased because the reduced particle size increased particle surface energy and repulsion between particles and the increased pH enhanced particle surface ionization. Hence, after proper length of wet ball milling treatment, highly stable ATO dispersion can be prepared, as increasing pH of the dispersion.
Fluorination of Polymethylmethacrylate (PMMA) Film and Its Surface Characterization
Jung, Min-Jung ; Lim, Jae-Won ; Park, In-Jun ; Lee, Young-Seak ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 317~322
In this study, poly(methyl methacrylate) (PMMA) was treated with changing mixing ratios of
using oxyfluorination method for hydrophilic modification of PMMA film. For the characterizations of oxyfluorinated PMMA surface, contact angle, surface free energy, X-ray photoelectron spectroscopy (XPS) and optical transmittance (UV-vis) were carried out. After the oxyfluorination, PMMA surface became more hydrophilic showing the decrease of water contact angle from
. So, surface free energy of oxyfluorinated PMMA film was increased from 46 to
. These results are attributed to hydrophilic functional groups such as hydroxyl group formed oxyfluorination method on the PMMA surface. From XPS results, it was confirmed that O/C concentration ratio on the surface of PMMA was increased, the amount of C-OH bonding which shows hydrophilicity was also largely increased from 6.7 to 24.8% with increasing fluorine partial-pressure via the oxyfluorination, The oxyfluorination conditions, room temperature, 1 bar with one mixture ratio of
had little influence on optical transmittance properties of PMMA film but enhanced its surface hydrophilicity. This result suggests that oxyfluorination method could be useful to change hydrophobic PMMA surface to hydrophilic.
Synthesis of Ti-SBA-15 Doped with Lanthanide Ion and Photocatalytic Decomposition of Methylene Blue
Jung, Won-Young ; Hong, Seong-Soo ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 323~327
Ti-SBA-15 catalysts doped with lanthanide ion were synthesized using conventional hydrothermal method and they were characterized by XRD, FT-IR, DRS,
-TPD and PL. We also examined the activity of these materials on the photocatalytic decomposition of methylene blue. La/Ti-SBA-15 samples with varying lanthanide ions doping maintained the mesoporous structure and the catalysts calcined at
for 6 h showed the highest crystallinity. With increasing the doping amount of lanthanide ion, the pore size and pore volume of La/Ti-SBA-15 materials decreased but the surface area increased. 1% La/Ti-SBA-15 catalysts showed the highest photocatalytic activity on the decomposition of methylene blue but the catalysts doped with more than 5% lanthanide ions showed lower activity compared to pure Ti-SBA-15 catalyst.
Synthesis of Porous Cu-ZnO Composite Sphere and CO Oxidation Property
Park, Jung-Nam ; Hwang, Seong-Hee ; Jin, Mingshi ; Shon, Jeong-Kuk ; Kwon, Sun-Sang ; Boo, Jin-Hyo ; Kim, Ji-Man ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 328~332
In this study, porous ZnO sphere and Cu-ZnO composite were synthesized by coprecipitation method in diethylene glycol solvent. The physicochemical properties of as-prepared composite materials were characterized by SEM, XRD,
-TPR. A series of porous Cu-ZnO with different Cu contents (0, 6.6, 21.3, 36.4, 54.6, 77.8 wt%) was investigated for CO oxidation activity in a fixed bed reactor system. With increasing Cu content in Cu-ZnO the surface area and micropore volume of Cu-ZnO are decreased and Cu (36.4 wt%)-ZnO shows higher activity for CO oxidation compared to the others.
Preparation of Fe/
Granules for Conversion of Syngas to Light Olefins by Fischer-Tropsch Reaction
Lee, Dong-Joon ; Jung, Kwang-Deog ; Yoo, Kye-Sang ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 333~336
granules with various compositions were prepared by combining sol-gel with oil drop method for Fishcer-Tropsh reaction to produce light olefin from synthesis gas. The granules was characterized and employed as a catalyst in the reaction. The surface area of granules was decreased with increasing Fe concentration. Especially, granule with 1.5 of Al/Fe ratios showed the highest CO conversion. However, the olefin selectivity was hardly affected by Al/Fe ratio. K concentration of granule gave a significant effect on catalytic performance. Initial CO conversion and olefin selectivity were increased with K concentration. However, the catalyst with higher K concentration was deactivated rapidly.
Solubilization of Monochlorophenol Isomers by the Aqueous Solution of Tetradecyltrimethylammonium bromide
Lee, Byung-Hwan ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 337~342
The interaction of monochlorophenol isomers with the micellar system of TTAB (tetradecyltrimethylammonium bromide) was studied by the UV/Vis spectrophotometric method. The solubilization constants (
) of monochlorophenol isomers into this micellar system have been measured with the change of temperature. Various thermodynamic parameters (
) have been calculated and analyzed from the dependence of
values on the temperature. The results show that the values of
are all negative but the values of
are all positive for the solubilizations of all isomers within the measured temperature range. The effects of additives (n-butanol and NaCl) on the solubilization of monochlorophenol isomers by the same surfactant system have been also measured. There was a great change on the values of
and CMC simultaneously with these additives. From these changes we can postulate the solubilization sites of each isomer in the micellar system of TTAB.
Effects of Oxyfluorination on Surface Graft Polymerization of Low Density Polyethylene Film and Its Surface Characteristics
Yun, Seok-Min ; Woo, Sang-Wook ; Jeong, Eui-Gyung ; Bai, Byong-Chol ; Park, In-Jun ; Lee, Young-Seak ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 343~348
The surface of low density polyethylene (LDPE) film was oxyfluorinated under different reaction conditions to introduce hydroperoxide groups and change surface characteristics. Hydroperoxide functional groups created by oxyfluorination were used as active sites for graft polymerization with hydrophobic monomer, acryl amide (AM), and hydrophilic monomer, methyl methacrylate (MMA) to carry out the second modification of the LDPE film surface. The surface properties of the OFPE films and grafted OFPE films were characterized by 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging method, ATR-IR, contact angle measurement and DSC. From the results of DPPH method, the amount of hydroperoxide groups on the oxyfluorinated LDPE film continuously increased as the total pressure in the oxyfluorination and the partial pressure of fluorine gas increased. The water contact angle and surface free energy measurements showed that hydrophilic liquid (water) contact angle on LDPE film surface decreased with hydrophilic AM grafting and hydrophobic liquid (methylene diiodide) contact angle on LDPE film surface decreased with hydrophobic MMA grafting. These were attributed to AM or MMA monomer grafting and the wettability of LDPE filmsurface to hydrophilic and hydrophobic liquids were improved.
Production of Rice Straw Based Cellulosic Ethanol Using Acidic Saccharification
Lee, Seung-Bum ; Jung, Soo-Kyung ; Lee, Jae-Dong ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 349~352
The production process of cellulosic ethanol from rice straw using acidic saccharification was studied in this experimental work. The hydration by ultrasonic energy and the acidic saccharification using 10~30 wt% of
were performed as pretreatment processes. Also, 10~50 wt% of yeast for 3~6 days was used for fermentation process. The yield of cellulosic ethanol was decided in the fermentation process. The optimum pretreatment condition was 375W of ultrasonic power and 30 min of hydration time using 20 wt% of
and 2 h of the acidic saccharification time. Finally, the optimum fermentation condition was at the condition of 30 wt% of yeast and 3 days of fermentation time.
Synthesis of Hollow Silica Using PMMA Particle as a Template
Hwang, Ha-Soo ; Cho, Kye-Min ; Park, In ;
Applied Chemistry for Engineering, volume 21, issue 3, 2010, Pages 353~355
Poly(methyl methacrylate) (PMMA) particles were prepared by soap-free emulsion polymerization of MMA in the presence of a cationic initiator, 2,2'-azobis(2-methylpropionamidine) (AIBA). The Stober method has been adopted to coat silica on the surface of these cationic particles. Negatively charged silica precursors were coated onto cationic particle surfaces by electronic interaction. During the coating process, hollow particles were directly obtained by dissolution of PMMA.