Abstract:
The present invention relates to a cellulosic biomass pretreatment method by a sodium carbonate (Na2CO3) solution and an apparatus therefor. The present invention provides ligneous biomass pretreatment method by leaching hemicelluloses and lignin except cellulose components among components constituting ligneous biomass using a sodium carbonate solution, thereby obtaining solid having a high cellulose residual rate, and an apparatus for the method. The method comprises: a step (S100) of supplying ligneous biomass to a leaching reactor; a step (S200) of supplying a sodium carbonate solution as an alkali solvent to the leaching reactor while supplying back pressure to the leaching reactor; a step (S300) of making the sodium carbonate solution react with the ligneous biomass in the leaching reactor under predetermined temperature and pressure to extract lignin and hemicelluloses except cellulose; a step (S400) of extracting the cellulose remaining from the ligneous biomass as solid within the leaching reactor; and a step (S500) of collecting a solution composed of lignin, hemicelluloses, and the sodium carbonate solution in a reservoir and then retrieving the sodium carbonate solution through gas and liquid separation or chemical separation. [Reference numerals] (S100) Step of supplying ligneous biomass to a leaching reactor;(S200) Step of supplying a sodium carbonate solution to the leaching reactor while supplying a back pressure to the leaching reacto;(S300) Step of making the sodium carbonate solution react with the ligneous biomass with each other in the leaching reactor to thereby extract lignin and hemicelluloses except cellulose;(S400) Step of washing and filtering the solid type ligneous biomass remaining in the leaching reactor to extract cellulose;(S500) Step of retrieving the sodium carbonate solution from lignin, hemicelluloses, and sodium carbonate solution extracted in the leaching reactor
Abstract:
PURPOSE: A use of Chlorella sp. M082 with an excellent carbon dioxide fixation ability at high temperature is provided to ensure resistance to carbon dioxide. CONSTITUTION: Chlorella sp. M082(deposit number: KCTC 11998BP) has an excellent carbon dioxide fixation ability at high temperature. The strain is used for fixation of carbon dioxide in coal-fired exhaust gas. The coal-fired exhaust gas contains 10-20 wt% of carbon dioxide, 100-300 ppm of CO, 150-350 ppm of SOX, 150-350 ppm of NOX, and 5-15 mg/m^3 of dust. [Reference numerals] (AA) Air(0.035%); (BB) Synthetic CO_2(10%); (CC) Coal exhaust gas(CO_2 ~15%); (DD) Temperature(35 -> 40°C); (EE) KCTC strain 46 kinds + KR-1; (FF) KCTC strain 24 kinds + KR-1; (GG) KCTC strain 16 kinds + KR-1; (HH) KCTC strain 5 kinds + KR-1; (II) Strain with superior CO_2 and temperature resistance
Abstract:
PURPOSE: A method for extracting crude oil for biodiesel is provided to extract the crude oil for the biodiesel with small chlorophyll contents from microalgae using a microwave pretreatment process. CONSTITUTION: A method for extracting crude oil for biodiesel comprises: a step of preparing microalgae slurry which contains 200-1,000 parts by weight of water based on 100.0 parts by weight of dried microalgae; a step of irradiating the microalgae slurry with microwaves for 3-8 minutes, and obtaining pre-treated microalgae by drying the result; and a step of extracting oils from the pretreated microalgae. Between the second step and third step, the method for extracting crude oil additionally comprises a step of crushing the pretreated microalgae into a particle diameter of 200 microns or less. [Reference numerals] (AA) Microalgae pretreated with microwaves; (BB,CC) Extracting solvent; (DD) Soxhlet extracting unit; (EE) Evaporation; (FF) Oil
Abstract:
본 발명은 미세조류로부터 오일 추출 및 바이오디젤 전환 방법에 관한 것으로, 그 목적은 미세조류로부터 오일을 추출하여 바이오디젤을 생산시, 추출된 오일에 존재하여 바이오디젤 전환 반응을 저해하는 현상을 가지는 엽록소를 바이오디젤 전환 반응 전에 미리 제거함으로써 바이오디젤 전환율을 증가시키는 방법을 제공하는 데 있다. 본 발명의 구성은 a) 미세조류로부터 헥산과 메탄올을 부피비 7:3으로 혼합한 용매로 오일을 추출하는 단계; b) 추출된 오일을 활성탄과 접촉시켜 오일에 포함된 엽록소를 제거하는 단계; 및 c) 엽록소가 제거된 오일을 바이오디젤로 전환하는 단계;를 포함하여 구성된 미세조류로부터 오일 추출 및 바이오디젤 전환 방법을 발명의 요지로 한다.
Abstract:
PURPOSE: A producing method of raw biodiesel oil and a producing method of biodiesel using the raw biodiesel oil are provided to remove phospholipids from the raw biodiesel oil by performing a pre-treatment process without a degumming process. CONSTITUTION: A producing method of raw biodiesel oil comprises the following steps: removing solids from oil obtained by oil-pressing biomasses containing fat(S300); esterifying the oil without the solids in the presence of an acid catalyst and alcohol without performing a degumming process(S302); removing phospholipids and free fatty acids from the oil(S304); dissolving the alcohol contained in the oil with cleaning water; separating the oil into an upper alcohol layer and a lower oil layer; and removing the alcohol and the moisture from the oil layer using a decompress-evaporating process.
Abstract:
PURPOSE: A manufacturing method of biodiesel is provided, which increases purity and yield of biodiesel by reducing inhibition action of the moisture against esterification and transesterification reaction. CONSTITUTION: A manufacturing method of the biodiesel comprises a step of esterification reacting crude oil and alcohol including free fatty acid under the acid catalyst; a step of transition esterification reacting alcohol and product under the base catalyst; a step of collecting excessiveness alcohol and eliminating moisture included in the collected alcohol using pervaporation method; and a step of reusing the alcohol from which the moisture is removed.
Abstract:
본발명은리그닌으로부터바닐린또는바닐린산제조용조성물및 이를이용한바닐린또는바닐린산제조방법에관한것이다. 본발명의조성물에의하면리그닌으로부터바닐린또는바닐린산을높은수율로제조할수 있다. 또한, 본발명의조성물에의하면리그닌으로부터바닐린산을선택적으로높은수율로제조할수 있다.