-
公开(公告)号：KR100405316B1
公开(公告)日：2003-11-12
申请号：KR1020010032228
申请日：2001-06-09
Applicant: 한국과학기술연구원
Inventor： 심상준
IPC: C12M1/00
Abstract: PURPOSE: Provided is a method for simultaneously extracting hydrocarbon using organic solvents during cultivation of microalgae, thereby extracting and recovering hydrocarbon in higher yield. CONSTITUTION: Hydrocarbon is characteristically produced by using a two-stage extractor consisting of a bubble column reactor and two-phase separating tank. The method for simultaneously extracting hydrocarbon using organic solvents during cultivation of microalgae comprises the steps of: supplying a culture medium from the bubble column reactor(1) to the two-phase separating tank(2) containing an organic solvent layer at a constant flow rate using a pump; recycling the culturing medium from the two-phase separating tank(2) to the bubble column reactor(1) through the organic solvent layer, wherein the hydrocarbon is extracted when passed through the organic solvent layer; and the organic solvent is alkane nonpolar solvent such as octane.
Abstract translation: 目的：提供一种在微藻培养期间使用有机溶剂同时提取碳氢化合物，从而以较高产率提取和回收碳氢化合物的方法。 组成：碳氢化合物的特点是使用由鼓泡塔反应器和两相分离罐组成的两级萃取器。 在微藻培养过程中使用有机溶剂同时提取碳氢化合物的方法包括以下步骤：将来自泡罩塔反应器（1）的培养基以恒定流速供给到含有有机溶剂层的两相分离罐（2） 使用泵; 通过有机溶剂层将培养基从两相分离罐（2）再循环到鼓泡塔反应器（1），其中烃在通过有机溶剂层时被提取; 并且有机溶剂是烷烃非极性溶剂如辛烷。
-
公开(公告)号：KR100367574B1
公开(公告)日：2003-01-15
申请号：KR1019990036896
申请日：1999-09-01
Applicant: 한국과학기술연구원
Abstract: PURPOSE: A chromatography separation method using radially directed electric field is provided, which can control residence time of object material in the radial electric field according to the strength of electric field and relative polarity of an object material, a solvent and a packing material and can increase separation efficiency. Therefore the system can achieve high efficiency and high separation performance and also can be applied to chromatography of industrial scale. CONSTITUTION: The method comprises: i) applying voltage of more than 1V to chromatography column to form an electric field radially 1-10 minutes before charging sample; and ii) controlling residence time of the object material by controlling the strength of electric field. The equipment is characterized by a chromatography column (5), wherein an inside electrode (7) and an outside electrode (8) are installed inside and outside of the column respectively to charge electric field for separating an object material from a solvent and a packing material, the column having a channel with an inlet (11) and an outlet (12) for a coolant or heating media to flow.
Abstract translation: 目的：提供一种利用径向电场的色谱分离方法，该方法可以根据电场强度和目标物质，溶剂和包装材料的相对极性来控制目标物质在径向电场中的停留时间，并且可以 提高分离效率。 因此该系统可以实现高效率和高分离性能，也可以应用于工业规模的色谱。 构成：该方法包括：i）在填充样品之前，向色谱柱施加大于1V的电压以在放电1-10分钟之前形成电场; 和ii）通过控制电场的强度来控制目标材料的停留时间。 该设备的特征在于色谱柱（5），其中内部电极（7）和外部电极（8）分别安装在色谱柱的内部和外部以填充用于从溶剂和填料中分离目标物质的电场 材料，该塔具有带有用于冷却剂或加热介质流动的入口（11）和出口（12）的通道。
-
公开(公告)号：KR100296738B1
公开(公告)日：2001-10-27
申请号：KR1019980015784
申请日：1998-05-01
Applicant: 한국과학기술연구원
IPC: C08B37/08
Abstract: PURPOSE: Provided is a process for producing chitosan oligosaccharide from polymer chitosan by hydrolysis using an edible organic acid useful for human bodies, which can be used for food additives and medical supplies. CONSTITUTION: The chitosan oligosaccharide is produced by dissolving the polymer chitosan in a water solution of the edible organic acid and performing the hydrolysis in an autoclave by applying microwave, wherein the edible organic acid is selected from the group consisting of tartaric acid, pyruvic acid, ascorbic acid, citric acid, lactic acid, propionic acid, acetic acid, and a mixture thereof and the concentration of the water solution of the organic acid is 3-8wt.%.
-
-
公开(公告)号：KR1020000050905A
公开(公告)日：2000-08-05
申请号：KR1019990001053
申请日：1999-01-15
Applicant: 한국과학기술연구원 , 에스케이케미칼주식회사
IPC: C07C7/10
Abstract: PURPOSE: A method for separating 2,6-dimethylnaphthalene with high purity is provided which solves the problem of loss of 2,6-dimethylnaphthalene and economical efficiency due to addition of the pre-treatment process and easily obtains the 2,6-dimethylnaphthalene with high purity. CONSTITUTION: A method comprises steps of: (i) selectively separating the mixture of dimethylnaphthalene isomer containing 2,6-dimethylnaphthalene from naphthalene mixture containing dimethylnaphthalene isomers by fractional distillation or recrystallization; and (ii) separating the 2,6-dimethylnaphthalene from the mixture of dimethylnaphthalene isomer containing 2,6-dimethylnaphthalene by pressure crystallization using solvent.
Abstract translation: 目的：提供一种分离高纯度2,6-二甲基萘的方法，其解决了由于加入预处理过程而导致2,6-二甲基萘损失和经济性的问题，并且容易地获得2,6-二甲基萘与 高纯度 构成：一种方法包括以下步骤：（i）通过分馏或重结晶从包含二甲基萘异构体的萘混合物中选择性地分离含有2,6-二甲基萘的二甲基萘异构体的混合物; 和（ii）通过使用溶剂的压力结晶从2,6-二甲基萘的二甲基萘异构体的混合物中分离出2,6-二甲基萘。
-
Patent Agency Ranking
-
公开(公告)号：KR101608078B1
公开(公告)日：2016-04-01
申请号：KR1020140082576
申请日：2014-07-02
Applicant: 한국과학기술연구원
Abstract: 본발명은이산화탄소를이용하여성장하는미세조류에축적되어있는전분을글루코오스로전환하지않고직접적인탄소원으로이용하여숙신산을생산할수 있는균주및 이를이용하여숙신산을생산하는방법에관한것으로,)BL-1-(KCTC 12585BP) 및BL-1-(KCTC 12587BP)로이루어진군에서선택된하나인이산화탄소유래숙신산생산균주를제공한다. 또한, 본발명의구현예들에서는상기이산화탄소유래숙신산생산균주를전분을포함하는배지에접종하여발효시키는단계를포함하는이산화탄소로부터숙신산을생산하는방법을제공한다.
-
公开(公告)号：KR101566471B1
公开(公告)日：2015-11-05
申请号：KR1020140019652
申请日：2014-02-20
Applicant: 한국과학기술연구원
CPC classification number: Y02A50/2342
Abstract: 본발명은실리콘나노선및 피리딘을사용하는이산화탄소의선택적환원방법에관한것이다. 본발명의여러구현예에따르면, 본발명의용액에칭법으로제조된실리콘나노선의표면은종래실리콘나노선보다매우거친구조를하고있고, 이렇게표면이거친실리콘나노선표면으로태양광이입사되면, 빛을흡수할수 있는부분이증가하고, 피리딘을함께사용함에따라이산화탄소환원반응에경쟁적으로일어나는수소생성과같은부반응이많이일어나는문제점을해결함과동시에이산화탄소를선택적으로환원효율이증가될수 있을뿐만아니라, 종래태양광에너지를이용하여이산화탄소를연료로전환하는기술에있어서, 높은전압이필요한문제점을해결할수 있다.
-
公开(公告)号：KR1020150098408A
公开(公告)日：2015-08-28
申请号：KR1020140019652
申请日：2014-02-20
Applicant: 한국과학기술연구원
CPC classification number: Y02A50/2342 , C25B3/04 , B01J19/08 , C01B32/50
Abstract: 본 발명은 실리콘 나노선 및 피리딘을 사용하는 이산화탄소의 선택적 환원 방법에 관한 것이다. 본 발명의 여러 구현예에 따르면, 본 발명의 용액 에칭법으로 제조된 실리콘 나노선의 표면은 종래 실리콘 나노선보다 매우 거친 구조를 하고 있고, 이렇게 표면이 거친 실리콘 나노선 표면으로 태양광이 입사되면, 빛을 흡수할 수 있는 부분이 증가하고, 피리딘을 함께 사용함에 따라 이산화탄소 환원 반응에 경쟁적으로 일어나는 수소 생성과 같은 부반응이 많이 일어나는 문제점을 해결함과 동시에 이산화탄소를 선택적으로 환원 효율이 증가될 수 있을 뿐만 아니라, 종래 태양광에너지를 이용하여 이산화탄소를 연료로 전환하는 기술에 있어서, 높은 전압이 필요한 문제점을 해결할 수 있다.
Abstract translation: 本发明涉及使用硅纳米线和吡啶选择性还原二氧化碳的方法。 根据本发明的各种实施例，通过本发明的溶液蚀刻方法制造的硅纳米线的表面比硅纳米线更加粗糙，并且当阳光到达阳光的粗糙表面时增加能够吸收光的部分的面积 硅纳米线。 通过一起使用吡啶，可以解决通常产生对二氧化碳的还原反应产生竞争性的副反应，如氢气的产生，可以提高选择性还原二氧化碳的效率。 此外，本发明可以消除对通过使用太阳能将二氧化碳转化为燃料的传统技术的高电压的需要。
-
公开(公告)号：KR1020030003473A
公开(公告)日：2003-01-10
申请号：KR1020010039302
申请日：2001-07-02
CPC classification number: C02F1/5236 , C02F1/56 , C02F1/583 , C02F7/00
Abstract: PURPOSE: A treatment system of wastewater containing fluorine and method thereof is provided, in which fluorine ion is treated by supplying sufficient calcium ion together with air at pH of 7 to 7.5 efficiently by passing the wastewater through the lime packing towers(10,10') filled with cheap and safe natural lime instead of hydrated lime is filled. CONSTITUTION: In the treatment system comprising two lime filled packing towers(10,10') in which natural lime with a diameter of 2 to 2.8 mm is filled and two coagulating/settling towers(30,30'), the treatment method comprises the steps of feeding wastewater together with air to a first lime packing tower(10) upwardly; forming fluorine compound by allowing the incoming fluorine wastewater together with air to rest at the packing tower for 20 to 30 minutes; transferring the fluorine wastewater containing fluorine compound to the coagulating/settling tank(30); adding polymer coagulant to the fluorine wastewater followed by agitating at high or low speed; discharging the low fluorine content fluorine wastewater caused by formation of settlement a second lime packing tower(10').
Abstract translation: 目的：提供含氟废水处理系统及其方法，其中氟离子通过使废水通过石灰填料塔（10,10'）有效地通过向pH7-7.5的空气供应足够的钙离子进行处理， ）充满了廉价安全的天然石灰，而不是熟石灰。 构成：在包括两个石灰填充填充塔（10,10'）的处理系统中，其中填充有直径为2至2.8mm的天然石灰和两个凝结/沉降塔（30,30'），所述处理方法包括 将废水与空气一起送入第一石灰填充塔（10）的步骤; 通过使进入的氟废水与空气一起在包装塔处静置20至30分钟来形成氟化合物; 将含氟化合物的氟废水转移到凝结/沉淀槽（30）中; 向氟废水中加入聚合物凝结剂，然后以高速或低速搅拌; 排出低氟含氟废水造成的沉淀形成第二石灰填料塔（10'）。
-
-
-
-
-
-
-
-
-
Search Results
28
records
(took 0.021 seconds)
