• 한국식품과학회지
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• 제6권1호
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• pp.6-11
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• 1974

Four new compounds; 2,2'-methylene-bis [3, 4, 6-trichloro ${{\beta}-(o-nitroanilino)$ propionoxy} benzene]; m.p. $200{\sim}202^{\circ}C,\;C_{31}H_{22}O_8N_4Cl_6$ 2,2'-methylene-bis [3, 4, 6-trichloro ${{\beta}-(p-nitroanilino)$ propionoxy} benzene]; m.p. $168-170^{\circ}C,\;C_{31}H_{22}O_8N_4Cl_6$ : 2,2'-Methylene-bis [3, 4, 6-trichloro ${{\beta}-(o-chloro-p-nitroanilino)$ propionoxy} benzene]; m.p. $170.5-172.5^{\circ}C,\;C_{31}H_{20}O_8N_4Cl_8$ : 2,2'-Methylene-bis [3, 4, 6-trichloro ${{\beta}-(c-methyl-p-nitroanilino)$ propionoxy} benzene]; m.p. $163-164^{\circ}C,\;C_{33}H_{26}O_8N_4Cl_6$-were synthesized by Mannich reaction from 2,2'-Methylene-bis (3, 4, 6-trichloroacetoxy benzene) and their antimicrobial activities against the microorganisms Staphylococcus aureus, Escherichia coli, Bacillus subtilis Natto, Brevibacterium ammoniagenes, Candida tropicalis, Rhodotorula glutinis, Pseudomonas ovalis, Aspergillus candidus Link, Aspergillus awamori Nakazawa. Aspergillus niger var. Tieghem, Aspergillus usami Sakakuchi, Penicillium notatum-were tested. 2,2'-methylene-bis [3, 4, 6-trichloro ${{\beta}-(o-nitroanilino)$ propionoxy} benzene] showed a strong antimicrobial activity against Bacilus subtilis Natto and Brevibacterium ammoniagenes.

• 환경위생공학
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• 제11권2호
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• pp.33-41
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• 1996

This study was performed to examine the factors influencing on the degradation of TCE, Benzene and 2,4 DCP in aqueous solution using ultrasonic irradiation. The TCE,Benzene and 2,4 DCP, which are hazard compounds causing environmental pollution, were not decomposable pollutants by convientional treatment. The results shows that the generation of H$_{2}$O$_{2}$, H$^{+}$ and OH$^{-}$ radical was formed by the oxidation and reduction reaction of ultrasound, and then theses decomposed the refractory pollutants of TCE, Benzene & 2,4 DCP in aqueous solution. we conformed that the ultrasonic irradiation was excellent in removal efficiency of the refractory pollutants any other than Advanced Oxidation Processes(AOP), utilized the treatment of organic compounds in the industrial wastewater. Consequently, these results suggest that ultrasonic irradiation may be extremely useful for the treatment of wastewaters contaminated organic pollutants, which is difficult to treat economically by conventional process.

• Journal of Korean Society for Atmospheric Environment
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• 제18권E1호
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• pp.13-20
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• 2002

The electrical and chemical properties of the dielectric barrier discharge (DBD) process for the benzene removal were investigated. The benzene removal was initiated with the applied voltage higher than the discharge onset value. The removal efficiency over 95 % was obtained at approximately 1.6 kJ lite $r^{r-1}$ of the electrical energy density. The increase of the inlet concentration decreased the removal efficiency. However, the benzene decomposition rate increased with the inlet concentration . While the increase of the gas retention time enhanced the removal efficiency, the decomposition rate decreased. Identification of the optimum condition between the decomposition rate and the removal efficiency is required for field applications of the DBD process.s.

• Environmental Engineering Research
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• 제13권1호
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• pp.14-18
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• 2008

Photocatalytic oxidations of benzene gas using the closed system (batch reactor) were induced to determine its by-products and investigate the effect of humidity and oxygen concentration on their generation. The study was able to identify 11 gaseous by-products: 2-methylpropene, acetaldehyde, acetone, pentane, methylcyclobutane, methylcyclopentane, cyclohexane, 2,3-dimethylbutane, 2-methylpentane, 3-methylpentane, and hexane. All the by-products were saturated hydrocarbons, which are less toxic than benzene and were probably formed through hydrogenation reaction on the photocatalytic surface. The photocatalytic oxidation of benzene under higher humidity produced less by-products. However, the amount of acetone released increased with higher humidity and oxygen concentration.

• 환경위생공학
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• 제16권3호
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• pp.72-79
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• 2001

The selective catalytic oxidation of toxic aromatic solvents (benzene, toluene, ethylbenzene, and styrene) and their mixtures were studied on a $Pt/{\;}{\gamma}-Al_2O_3$ catalyst at temperature ranging from $160~350^{\circ}C$. The deep conversion of aromatic solvents was increased as the inlet concentration was decreased and the reaction temperature was increased. The reactivity increases in order benzene > toluene > ethylbenzene > styrene. In mixture, remarkable effects on reaction rate and selectivity have been evidence ; the strongest inhibition effect is shown by styrene and increase in a reverse order with respect to that of reactivity. The inhibition effect was increased in order styrene > ethylbenzene > toluzene > benzene. This trend is due to the competition adsorption between the two or three reactants on the oxidized catalyst. Also, the deep conversion change of benzene was a small in tertiary mixtures(including of benzene and styrene) comparing with conversion characteristics of binary mixture with styrene. This result was due to small concentration of styrene. which had very strong inhibition effect.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2000년도 추계학술발표대회 및 bio-venture fair
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• pp.179-182
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• 2000

Toluene-degrading bacterium, Microbacterium esteraromaticum CS3-1 was isolated from the biofilter for the removal of BTEX. Microbacterium esteraromaticum CS3-1 was shown to utilize toluene as a primary carbon and energy source. Effect of mixed BTEX gases on toluene degradation rate by M. esteraromaticum CS3-1 was investigated in this study. Toluene degradation rate was 2.26(only toluene), 2.06(toluene+benzene), 2.57(toluene+ethylbenzene), and 4.74(toluene+xylene) mmole $toluene\;{\cdot}\;g-DCW^{-1}\;{\cdot}\;h^{-1}$. Toluene degradation rate was 2.26(only toluene), 1.23(toluene+benzene+ethylbenzene), 1.52 (toluene+ethylbenzene+xylene), and 1.76(toluene+benzene+ethylbenzene+xylene) mmole $toluene\;{\cdot}\;g-DCW^{-1}\;{\cdot}\;h^{-1}$. The presence of BTEX compounds over three mixtures had a negative effect on toluene degradation rate. Toluene degradation rates were enhanced by the presence of ethylbenzene or xylene, whereas the presence of benzene had a negative effect on toluene degradation rate in comparison with toluene degradation rate when only toluene is existent.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2000년도 추계학술발표대회 및 bio-venture fair
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• pp.163-166
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• 2000

본 연구에서는 천연피혁제조공장에서 발생하는 대표적인 악취성분인 황화수소, 암모니아 및 benzene을 활성슬러지에서 획득한 혼합균주와 황산화균인 Thiobacillus sp.IW가 동시에 접종된 생물막반응기를 이용하여 효과적으로 제거하고자 하였다. Benzene의 경우 단일 및 복합성분의 악취에 대해 90%의 제거효율을 유지하였고, 암모니아는 99%의 아주 우수한 제거효율을 나타내었으나, 황화수소의 경우 처리효율은 85%정도로 다른 성분에 비해 낮았다.

• 대한화학회지
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• 제22권4호
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• pp.254-258
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• 1978

공기중에 오염되어 있는 미량의(benzene hexachloride : BHC)를 정량하는 간단하고 예민한 방법을 연구하였다. 시료를 n-hexane에 통과시켜 BHC를 녹인 다음 n-hexane 용액의 흡광도를 245nm에서 측정하고 고체 BHC 표준시료를 기화시킨 후 n-hexane에 통과시키고 같은 방법으로 흡광도를 측정하여 얻은 검량선으로부터 농도를 계산하였다.

• 대한화학회지
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• 제41권2호
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• pp.82-87
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• 1997

다양한 bis(silacyclopentadienyl)aromatic 화합물 합성에 필요한 전구체인 1,4-bis(alkyldichlorosilyl)benzene을 합성하였다. 이 전구체에 1,4-dilithio-1,2,3,4-tetraphenyl-1,3-butadiene을 첨가하여 고리화반응을 시킴으로써 리간드로 또는 안정한 silacyclopentadienyl anion 전구체로 사용될 1,4-bis(1'-alkyl-2',3',4',5'-tetraphenyl-1'-silacyclopentadienyl)benzene을 합성하였다.

• Bulletin of the Korean Chemical Society
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• 제18권3호
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• pp.328-333
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• 1997

Dicyanovinyl-containing bis-hydroxy monomers, p-bis[1-(4-hydroxypiperidinyl)]-2,2-dicyanovinyl]benzene (2), p-bis[1-[1-(2-hydroxyethyl)piperazinyl]-2,2-dicyanovinyl]benzene (3), p-bis[1-(4-hydroxyphenylamino)-2,2-dicyanovinyl]benzene (4) and p-bis[1-[N-methyl-(N-hydroxyethyl)amino]]-2,2-dicyanovinyl]benzene (5) were prepared from p-bis(1-chloro-2,2-dicyanovinyl)benzene (1) and the corresponding amino alcohol. The poly(enaminonitriles-ester)s with a variety of chemical structures in the main chain were prepared from them. The chemical structure of polymers was confirmed through the syntheses of their corresponding model compounds. The polymers are easily soluble in polar aprotic solvents such as DMF, DMSO and NMP. Brittle and hard films can be cast from DMF solutions of polymers. Most polymers showed a large exotherm in DSC analyses and undergo a curing reaction around 350 ℃ to form insoluble materials. The polymers consisting of rigid aromatic moieties show 80-88% residual weight at 500 ℃ under nitrogen.