权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Separation by the supercritical carbon dioxide of the specific ingredient generated by hydrothermal reaction from organic wastes

利用超临界二氧化碳从有机废物中水热反应产生的特定成分分离

基本信息

批准号：
14350530
负责人：
KISHITA Atshushi
金额：
$ 9.02万
依托单位：
Tohoku university
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2003
项目状态：
已结题

项目摘要

Since it solved completely with the small non-polar or fine polar substance of molecular weights, such as hydrocarbon, alcohol, and carbonic acid, it has quite high saturation solubility and solvent power changes with temperature or pressure a lot, supercritical carbon dioxide can separate the useful ingredient in solution in high purity by control of temperature or pressure. However, by the system with which the high warm temperature water of subcritical coexists, it is difficult to design the circulation formula system by which unknown points, such as the dissolution to water phase of carbon dioxide, Optimized separation and concentration by the system in which an organic matter exists mostly. Then, the extraction process of the useful substance generated by the hydrothermal reaction of the organic waste using super-criticality carbon dioxide was devised. If the hydrothermal reaction of the organic waste is carried out by high temperature high-pressure underwater, the solution contai … More ning a water-soluble organic matter will be obtained.Supercritical carbon dioxide is added to the obtained solution, and an organic matter is extracted from solution. Then, when supercritical carbon dioxide phase and water phase are separated and supercritical carbon dioxide phase is decompressed, carbon dioxide is the process that evaporates and a water-soluble organic matter is obtained by high concentration. In this research, in order to examine the possibility of this process, counter flow style continuation extraction equipment was produced and the experiment, which extracts an organic matter from low-concentration water-soluble organic compound solution, was conducted. It turns out that it experiments by making 2wt% solution into a sample, and, as for 1-butanol of fine polarity, 60% of the rate of extraction is obtained by about 100% of extraction liquid concentration, and the maximum, and the concentration effect is acquired. As for strong polar acetic acid, 12% of extraction liquid concentration and 1% of the rate of extraction were obtained by the maximum. The possibility of a process, which extracts the useful ingredient from the hydrothermal process of biomass waste by these experiments using supercritical carbon dioxide, was shown. Less

由于它与分子量较小的非极性或极性较好的物质如烃、醇、碳酸等完全溶解，具有很高的饱和溶解度，且溶剂力随温度或压力变化很大，超临界二氧化碳可通过控制温度或压力将溶液中的有用成分高纯度分离。然而，通过与亚临界的高温热水共存的系统，难以设计循环公式系统，通过该循环公式系统，未知点例如二氧化碳溶解到水相中，通过其中有机物主要存在的系统优化分离和浓缩。然后，设计了使用超临界二氧化碳的有机废物的水热反应产生的有用物质的提取过程。如果有机废物的水热反应在水下通过高温高压进行，则溶液含有 ...更多信息得到水溶性有机物，向得到的溶液中加入超临界二氧化碳，从溶液中萃取有机物。然后，当分离超临界二氧化碳相和水相并将超临界二氧化碳相减压时，二氧化碳蒸发并通过高浓缩获得水溶性有机物。在本研究中，为了验证该方法的可行性，制造了逆流式连续提取设备，并进行了从低浓度水溶性有机化合物溶液中提取有机物的实验。实验结果表明，将2wt%的溶液制成样品，对于极性较好的1-丁醇，萃取液浓度为100%时，萃取率达到60%左右，达到最大值，并获得了浓缩效果。对于强极性乙酸，最大可获得12%的萃取液浓度和1%的萃取率。通过使用超临界二氧化碳的这些实验，显示了从生物质废物的水热过程中提取有用成分的过程的可能性。少