Conversion of waste fish meat to bio-degradable plastics poly lactic acid by sub-critcal water oxidation

亚临界水氧化将废鱼肉转化为可生物降解塑料聚乳酸

基本信息

批准号：
10480147
负责人：
YOSHIDA Hiroyuki
金额：
$ 7.87万
依托单位：
Osaka Prefecture University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B).
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 2000
项目状态：
已结题

项目摘要

Production of various organic substances from fish bone, fish head, fish meat and fish entrails by sub-critical water hydrolysis was studied. Optimal reaction was determined for each product. Adsorption equilibrium and mass transfer of organic acid in ion exchange resins (DIAION WA30 and highly porous chitosan resin) were also studied. The following significant results were obtained from the research on conversion of waste fish meat, entrails, and bones.(1) From 100 ton fish bone, 0.64 ton of phosphoric acid, 0.44 ton of lactic acid was extracted by 5 min reaction at 473 K.Then, 25 ton of bone, 1.7 ton of pyroglutamic acid, 0.8 ton of alanine, 0.8 ton of glycine, 0.5 ton of cystine, and 1.8 ton of oil were obtained by sub-critical water hydrolysis at 543 K for 20 min. From 100 ton of fish head, 1.5 ton of bone, 0.23 ton of pyroglutamic acid, 0.07 ton of phosphoric acid, 4.9 ton of oil, and 0.2 ton of fat were obtained.(2) Oil contained valuable and expensive unsaturated fatty acids such as DHA and EPA.(3) Since optimal reaction temperature depends on the type of products, an integrated process which produce different product successively at different reaction temperature can be established.(4) Adsorption isotherm of lactic acid for DIAION WA30 ion exchanger and that for chitosan bead were well explained by Langmuir equation.(5) Intra-particle diffusion of lactic acid was explained parallel transport by solid-phase and macropore diffusion. Since adsorption rate of the chitosan bead was much larger than that of the DIAION WA30, the chitosan bead was favorable for separation of organic acids.

研究了通过亚临界水解生产鱼骨，鱼头，鱼肉和鱼类内脏的各种有机物质。确定每种产品的最佳反应。还研究了有机酸在离子交换树脂（诊断WA30和高度多孔壳聚糖树脂）中有机酸的吸附平衡和传质。从关于废鱼肉，内脏和骨骼的转化的研究中获得了以下显着结果。（1）从100吨鱼骨，0.64吨磷酸，0.44吨的乳酸通过5分钟的反应在473 k.then，25吨的骨头，1.7吨的1.8吨吡喃硫酸含量，0.8吨静脉内和0.8吨的cy cy.5吨的牛奶，1.8吨的cy tone cy n tonty tonty tonthen，1.7吨的骨骼中提取。油是通过在543 K下的亚临界水水解获得20分钟。从100吨鱼头，1.5吨骨头，0.23吨的拟南芥，0.07吨的磷酸，4.9吨油和0.2吨脂肪中获得。（2）油包含有价值且昂贵的不饱和脂肪酸，例如DHA和EPA等产品，诸如最佳反应的过程中，产生了不同的产品，这是在产生不同的产品，这是相同的反应，这是相同的反应，这是不同的，这是相互作用的连续变化，这是相互作用的，这是不同的，这是不同的，这是相互作用的，这是相同的温度，这些脂肪均具有不同的温度，（该水平）是不同的，它的温度不同。乳酸的吸附等温线对诊断330离子交换剂的吸附等温线，而壳聚糖珠的吸附是通过Langmuir方程很好地解释的。（5）通过固相和巨孔扩散解释了乳酸内粒子内扩散的平行运输。由于壳聚糖珠的吸附速率比诊断WA30的吸附速率大得多，因此壳聚糖珠对分离有机酸有利。