Abstract:
PURPOSE: A strain which produces itaconic acid of high concentration is provided to absorb dissolved oxygen in a micro-aerophilic environment and to produce itaconic acid with high efficiency. CONSTITUTION: An oxygen transfer protein gene is a Vitreoscilla spp.hemoglobin gene of sequence number 1. A transformed itaconic acid-producing strain of high productivity is prepared by transforming with an expression vector containing the gene of sequence number 1. The strain is Aspergillus terreus TF-8(KACC93093P). A method for producing itaconic acid comprises a step of culturing the strain; and a step of collecting itaconic acid from culture liquid.
Abstract:
PURPOSE: A biomass-derived curable compound and a method for preparing the same are provided to replace petroleum resource-derived curable materials. CONSTITUTION: A biomass-derived curable compound is formed by binding two epoxide functional groups to at least one furane compounds. The biomass-derived curable compound is denoted by chemical formula I or II. A solvent-free curable composition contains the biomass-derived curable compound and initiator. The initiator is a cationic curing initiator. A method for preparing the biomass-derived curable compound comprises: a step of preparing starting material from cellulose for making furan compounds; and a step of mixing the furan compounds and epichlorohydrin and stirring. The furan compounds are 2,5-bishydroxymethylfuran or a compound of chemical formula III.
Abstract:
PURPOSE: A method of manufacturing biodiesel by a discharge and absorption controlling system of methanol and glycerol is provided to minimize the inhibition of an enzyme inhibition material including methanol and glycerol, to produce biodiesel steadily, and to simplify a manufacturing device for biodiesel. CONSTITUTION: A method of manufacturing biodiesel comprises the following steps of: producing biodiesel by a transesterification of oil and methanol using enzymatic catalyst; inserting a porous material consisting methanol instead of inserting the methanol itself to the reactor; and separating glycerol from the porous material after a completion of the reaction. The porous material is a silica gel. The separation of the glycerol from the porous material is done by methanol and supercritical carbon dioxide. The reaction temperature for the transesterification is 40 deg C, and the stirring speed of the reactor is 300rpm.
Abstract:
본 발명은 과염소산염 (perchlorate)과 같이 매우 낮은 농도로 수용액상에 존재하는 음이온 오염물질을 폐수 및 지하수로부터 효과적으로 제거하기 위하여 기존의 유기 음이온 교환수지의 단점을 보완한 유기/무기 복합 나노다공성 음이온 교환수지의 제조에 관한 것으로, 구체적으로 유기/무기 복합 나노다공성 음이온 교환수지를 위한 나노다공성 지지체를 제조한 후 탄소결합 길이가 다른 기능기를 부착함으로써 빠른 흡착능을 갖는 합성수지를 제조하는 것을 포함한다. 본 발명의 유기/무기 복합 나노다공성 음이온 교환수지의 성능은 기능기의 몰비율 및 제조 조건에 따라 달라진다. 따라서, 본 발명에서는 탄소결합 길이가 다른 두 가지 기능기의 몰비율을 달리하여 나노다공성 지지체에 부착 후 수지의 형태 및 흡착특성을 평가하여 빠른 흡착능을 갖는 합성수지의 제조를 위한 최적의 조건을 제공한다. 과염소산염, 유기/무기 복합 나노다공성 음이온 교환수지, 나노다공성 지지체 (SBA-15), 기능기, 함침법
Abstract:
본 발명은 입력샤프트가 구비되는 기동플라이휠의 외측(외면)에는 유체실이 형성된 내측케이스를 장착시키되, 상기 유체실에는 자기유체를 충진시키고 출력샤프트가 구비된 로터를 내장시키며, 내측케이스를 형성하는 유체실의 외주에는 전자기코일을 매설시켜서 된 자기유체를 이용한 클러치에 관한 것으로서, 전자기코일에 공급되는 전원을 ON/OFF시켜 줌으로서 전자기코일에서 발생되는 열과 자기장에 의해 자기유체의 점성이 변화되면서 로터를 억류/해제시켜 주도록 하여 입력샤프트로 입력되는 동력을 출력샤프트에 공급시키거나 또는 차단시킬 수 있고, 유체실을 형성하는 내측플라이휠과 외측커버의 외면에 쿨링핀을 설치하여 동력전달 과정에서 발생되는 자기유체의 열기를 신속하게 제거하여 오동작이 발생하는 것을 원천적으로 방지할 수 있으며, 구조를 간단히하여 제작비용을 낮출 수 있을 뿐만 아니라 용이하게 제조하여 생산성을 향상시킬 수 있으며, 방열판과 베어링을 적절하게 배치하여 자기유체에서 열이 발생하는 것을 방지할 수 있도록 하며, 자동기어오일의 사용을 배제시켜 줌으로서 환경이 오염되는 것을 방지할 수 있다. 기동플라이휠. 내측케이스. 로터. 전자기코일. 자기유체. 쿨링핀.
Abstract:
본 발명은 폐활성슬러지를 혐기소화공정 적용전에 전처리를 통한 그 분해 및 발효효율을 향상시키고, 처리시간 또한 감소시킬 수 있는 진보된 생물학적 처리 및 재자원화 기술로서, 열적 전처리단계, 화학적 전처리단계, 초음파 전처리단계, 및 열화학적 전처리 단계 중에서 선택된 어느 하나의 전처리단계를 수행하는 것을 포함한다. 이러한 재자원화를 통해서, 당면한 유기성 폐기물을 효율적으로 처리하는 폐기물처리업 뿐만 아니라, 메탄과 같은 고부가가치 연료로서 재활용이 가능하며, 다양한 전처리공정을 통해 가스발생 향상, 처리시간 저감 및 오염부하의 효율적인 저감 등의 결과를 얻을 수 있다.
Abstract:
PURPOSE: To provide the mixed stains for treating textile wastewater containing azo disperse dye and a method for biological treatment of textile wastewater, which remove effectively and economically chromaticity and chemical oxygen demand of the textile wastewater. CONSTITUTION: The mixed strains consist of Bacillus cereus KWlc1(deposit no.: KCTC 10451BP) and Bacillus cereus KWlc2(deposit no.: KCTC 10452BP). To remove chromaticity and chemical oxygen demand of textile wastewater, supplementary carbon source is injected into the textile wastewater where the mixed strains are applied. The supplementary carbon source is glucose.
Abstract:
PURPOSE: A microorganism for degrading trinitrotoluene(TNT) and a biological method for degrading trinitrotoluene using the same microorganism are provided, which microorganism has improved TNT-degrading activity, so that wastewater, sewage or soil polluted by TNT can be biologically treated without resulting in environment pollution. CONSTITUTION: The microorganism Pseudomonas putida KPT202(KCCM 10473) having improved trinitrotoluene(TNT)-degrading activity is provided. The biological method for degrading trinitrotoluene comprises adding Pseudomonas putida KPT202(KCCM 10473) and at least one subsidiary energy source into the wastewater, sewage or soil polluted by TNT, and culturing it, wherein the subsidiary energy source is selected from subsidiary carbon source, subsidiary nitrogen source and Tween 80; the subsidiary carbon source is at least one selected from acetate, aspartate, citrate, corn steep liquor, glucose, glycerol, malic acid, molasses, pyruvate and succinate; and the subsidiary nitrogen source is ammonium chloride or potassium nitrate.
Abstract:
PURPOSE: A microorganism for degrading trinitrotoluene(TNT) and a biological method for degrading trinitrotoluene using the same microorganism are provided, which microorganism has improved TNT-degrading activity, so that wastewater, sewage or soil polluted by TNT can be biologically treated without resulting in environment pollution. CONSTITUTION: The microorganism Pseudomonas putida KPT202(KCCM 10473) having improved trinitrotoluene(TNT)-degrading activity is provided. The biological method for degrading trinitrotoluene comprises adding Pseudomonas putida KPT202(KCCM 10473) and at least one subsidiary energy source into the wastewater, sewage or soil polluted by TNT, and culturing it, wherein the subsidiary energy source is selected from subsidiary carbon source, subsidiary nitrogen source and Tween 80; the subsidiary carbon source is at least one selected from acetate, aspartate, citrate, corn steep liquor, glucose, glycerol, malic acid, molasses, pyruvate and succinate; and the subsidiary nitrogen source is ammonium chloride or potassium nitrate.