• 한국지구물리탐사학회:학술대회논문집
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• 한국지구물리탐사학회 2003년도 Proceedings of the international symposium on the fusion technology
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• pp.573-580
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• 2003

In Taiwan there are 21 Municipal Solid Waste Incinerators (MSWI) built to treat 80% of the MSW nationwide. Approximately 2,000 tons of incineration ashes of municipal waste contain reaction ash and fly ash (3:1 by weight)will be produced daily, and this may cause a serious waste problem. According to EPA regulations, reaction ash and fly ash produced after incineration should be properly treated. Landfill capacity barely meets the general demands. More efficient actions should be planned and taken. The study found 'reclamation' should be the optimal solution to this problem. Only limited research and previous successful experiences are available among other countries. An incinerator in Northern Taiwan is chosen for this study to make environmental bricks from the reaction ash and fly ash. From the previous tests, the results of strength test were measured. From the previous test results, the fly ash products have not reached the desired strength; hence, reaction ash is chosen for further pilot study. In the experiment, incineration ashes, cement and gravel are mixed in the ratio of 1:1:1(by weight), to ground concretization aggregate and pelletization aggregate, the concrete products made from the aggregates were of the strength of 108 $kgf/cm^2$ and 142 $kgf/cm^2$ individually. For the purpose of making nonstructural walls which met the State Building Standards. In the study, 50 tons of concrete products was yielded from aggregate and environmental bricks. Further observation and supervision are recommended to ascertain the resource recycling and reclamation. EPA has planned to build three 'Recycling Plants' in northern, middle and southern Taiwan to develop efficient techniques to produce concrete products, sub-base course, soundproofing wall, gravel, artificial fishing reefs, tiles, drainage, bricks and etc. This experiment of the demonstrative plant solves the problem of the incineration ashes and opens another opportunity to reclaim them.

• 한국대기환경학회:학술대회논문집
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• 한국대기환경학회 2002년도 추계학술대회 논문집
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• pp.265-266
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• 2002

휘발성 유기화합물(Volatile Oraganic Compounds: VOCs)은 오존 등의 광화학 스모그 생성의 원인물질일 뿐만 아니라 발암성의 유해물질, 지구온난화, 대기중의 악취물질 등으로 환경 및 건강에 악영향을 초래한다. 최근 들어 VOCs에 대한 대기중 배출규제가 강화됨에 따라 이를 효과적으로 제거 또는 회수하는 연구가 매우 중요시되고 있으며, 활성탄을 이용한 흡착은 이러한 기체상의 VOCs 분자를 고체 흡착제에 약한 분자력의 인력에 의해 접촉시켜 분리하는 공정으로 회수율 및 에너지 절약의 관점에서 효과적인 방법으로 알려져 있다. (중략)

• 한국대기환경학회지
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• 제22권1호
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• pp.25-33
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• 2006

The objective of this research is to improve the adsorption capacity of adsorbent made from MSWI (Municipal Solid Waste Incinerator) fly ash by surface oxidation. Used oxidation agents were $HNO_{3}$, $H_{2}SO_{4}$ and $(NH_{4})_{2}S_{2}O_{8}$. These agents can modify the surface property of an adsorbent such as specific surface area, pore volume, and functional group. The surface structure was studied by BET method with $N_{2}$ adsorption. The acid value and base value were determined by Boehm's method. The adsorption properties were investigated with benzene and MEK (Methylethylketone). According to the results, the specific surface area of the adsorbent was increased from 309.2 $m^{2}$/g to 553.2 $m^{2}$/g by $HNO_{3}$ oxidation. But $H_{2}SO_{4}$ and $(NH_{4})_{2}S_{2}O_{8}$ oxidation was decreased slightly. After Oxidation, surface acid value increased, but base value decreased. FAA-N shows the highest acid value. The content of oxygen increased greatly and oxygen group was created on the adsorbent surface. The surface oxidation improved the adsorbing capacity for MEK. The amount of adsorbing MEK was increased from 189 $m^{2}$/g to 639 $m^{2}$/g by $HNO_{3}$ oxidation.

• 한국대기환경학회지
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• 제14권4호
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• pp.293-302
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• 1998

This study was performed to investigate the behavior of chlorobenzenes (CIBZS) and chlorophenols (CIPhs) in a thermally treated MSWI fly ash. The experiment was carried out in a fixed bed reactor at the temperature range of 300~$600^{\circ}C$. Reaction time range was between 30 and 120 minutes, and NB and 02 gases were used as carrier gas. The decomposition rate of CIBZS was more affected by reaction time than by the reaction temperature. The decomposition rate of CIPhs was affected by both parameters. Decomposition rate of CIBZS and CIPhs reached 80.4% and 96.6% at $600^{\circ}C$, 120 min, respectively. Considering the effect of O2 content, decomposition rate of CIBZS and CIPhs was the highest at 10% of O2 content. Declorination and decomposition reactions Pere investigated by analyzing homologue distribution. Higher chlorinated CIBZS and CIPhs homologue decreased but lower chlorinated compounds increased with the increase of temperature. Effect of O2 on the homologue distribution of these compounds was not clear in the range of our experiment conditions.

• 한국대기환경학회지
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• 제18권2호
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• pp.149-159
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• 2002

The objective of this study was to evaluate the formation characteristics of CBs and CPs from TCE, aliphatic compound. The experiment was carried out in a fixed reactor during 30 min under the oxidation condition at the range of temperature, 300~$700^{\circ}C$. MSWI fly ash was used as catalyst in this study. Total amount of CBs formed greater magnitude than that of CPs overall range of reaction temperature. It is proposed that the formation of CPs was caused from hydroxylation of CBs. According to increasing temperature to $600^{\circ}C$, the yield of CBs and CPs increased but significantly decreased at $700^{\circ}C$. It is suggested that decomposition rate was faster than formation rate at the high temperature. In the homologue distribution of CBs, DCBs were major products at 30$0^{\circ}C$ and the amount of higher chlorinated compound increased to $600^{\circ}C$. Because they were formed by chlorination of lower chlorinated compounds. In case of CPs, the amount of DCPs was 90% of total amounts in both thermal formation and catalytic reaction. On the other hand it was clearly observed that the chlorination rate in catalytic reaction was higher than in thermal formation with TCE only.

• 분석과학
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• 제19권1호
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• pp.86-95
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• 2006

현재 가동 중인 생활폐기물 소각시설에서 배출되는 소각재의 수세처리에 의한 유기화학물질 용출특성을 확인하기 위해 GC/MSD로 정성 분석을 하였다. 바닥재 및 비산재에서 각각 44종 및 17종의 다양한 유기화합물질을 확인하였다. 이러한 정성분석은 각 피크의 질량스펙트럼에 대한 Library(NIST21, NIST107, WILEY229) 검색 후 일치도가 90% 이상인 유사지표(similarity index)에 의해 수행되었다. 바닥재는 Naphthalene 그리고 Phenanthrene인 2종의 다방향족화합물(Polycyclic Aromatic Hydrocarbons, PAHs)을 포함한 18종의 방향족화합물과 사슬모양의 탄화수소인 26종의 지방족화합물을 검출하였다. 비산재의 경우 잔류성유기오염물질(Persistent Organic Pollutants, POPs)인 헥사클로로벤젠(Hexachlorobenzene, HCB)을 포함한 10종의 방향족화합물과 7종의 지방족화합물을 정성적으로 확인하였다. 또한, 바닥재와 비산재의 용출액과 용출잔사의 용출특성을 비교분석한 결과, 바닥재에서는 Ethenylbenzene, Benzaldehyde, 1-Phenyl-ethanone 그리고 1,4-Benzenedicarboxylic acid dimethyl ester 등이, 비산재에서는 Naphthalene, Dodecane, 1,2,3,5-Tetrachlorobenzene, Tetradecane, Hexadecane 그리고 Pentachlorobenzene등의 유기화합물이 수층으로 용출되는 결과를 얻었다. 따라서 소각재 중 비산재 및 바닥재가 단순 매립될 경우 유기화합물에 의한 침출수 및 지하수, 토양 등 2차 오염이 발생할 것으로 추정되며, 이러한 2차 오염을 방지하기 위해서 소각재에 함유되어 있는 다양한 종류의 유기화학물질의 용출특성을 조사하여 이에 대한 효율적이고 적정한 관리가 이루어져야 할 것으로 판단된다.