The waste secondary battery contains a significant amount of valuable metals, making its recycling highly desirable. However, conventional chemical methods for recycling are environmentally unfriendly and cost-ineffective. Rather than the chemical method, this paper deals with a mechanical method for recovering electrode materials from waste secondary batteries by blowing pressurized air onto the interface area between the electrode and the separator. Especially, in this study, the effective blowing angle were searched by simulating the separation of the electrode material from the separator through 1-way fluid structure interaction analysis based on the Cohesive Zone Modeling technique.

본 시험은 재배과정 중 배지에서 분리한 미생물의 특성을 조사하여 이들 미생물과 버섯균의 생육과 연관관계를 밝히고자 하였다. 짚, 계분 등 배지 재료에서 분리한 미생 물의 양송이 균주에 대한 억제 정도는 국내 육성 양송이 균주가 외국에서 수입한 양송이 균주 보다 생육 억제 정도가 낮은 경향을 보였다. 양송이 배지 발효 단계별 분리 미생물의 양송이 품종간 균사 생육 억제 정도는 국내 육성 품종인 새도가 다른 품종보다는 생육이 좋았다. 그리고 발효과정이 진행됨에 따라 버섯균에 대한 억제 정도는 약해지는 경향을 보였다. 양송이 배지에서 분리한 미생물을 합성배지(CDA)에 도말한 뒤 버섯균사를 접종하여 균사의 생육을 조사한 결과와 분리균을 도말하고 항온기에서 2일간 배양한 후 배지를 완전히 뒤집어 배지의 뒷면 중앙에 버섯 균사를 접종하여 균사 생육을 조사한 결과를 비교 분석한 결과 양송이균의 생육 정도가 비슷한 경향을 보이는 것으로 보아 양송이 배지에서 분리한 미생물은 분비성 물질을 통해서 버섯균의 생육과 증식에 영향을 미친다는 것을 알 수 있었다. 양송이 균의 생육을 촉진하는 미생물을 분리한 결과 21균주가 선발되었고 대부분 4차 뒤집기 이후에서 많이 선발되었다. 대표적인 균주로는 Alcaligenes faecalis B-4-28, Comamonas testosteroni B- 4-31, Acinetobacter soli B-4-40 등이 있다.

본 연구는 실제 HLW 수준의 다성분 계 모의 용액으로부터 금속함유 추출 계에 의한 Am-Cm/RE 원소의 공분리 및 이의 상호분리 연구를 수행하였다. 우선 금속함유 추출제인 Zr-DEHPA를 자체 제조하고, 제 3상 방지 조건 결정과 질산 농도, DEHPA 농도, Zr 함유량 등이 공추출에 미치는 영향을 평가하여 최적 조건으로 (15g/L Zr-1M DEHPA)/NDD-1M 추출 계를 설정하였다. 이때 추출률은 Am (81%), Cm (85%), RE 원소 (80% 이상), Mo (98%), Fe (85%), U (98%), Np (73%), 기타 원소 (5% 이하) 등으로 Am-Cm/RE의 공분리 적용성은 양호하나, U, Np, Mo, Fe의 선제거가 필요하고 특히 제 3상 형성 유발 물질인 Zr이 거의 함유되지 않아야 한다. 그리고 공추출된 Am-Cm/RE를 Am-Cm (역추출제 : 0.05M DTPA-1M Lactic acid-pH 3.6) (역추출제 : 5M ) 순으로 상호 분리하여 각각의 분리계수를 평가하였으며 이때 Am은 65.4%, Cm은 63.9% RE 원소(Y 제외)는 85% 이상이 역추출 되었다.

Conjugate trienoic acids (CTA) occurred in triacylglycerols (TGs) of the seed oils of Trichosanthes kirilowii, Momordica charantia and Aleurites fordii, and they were easily converted to their methyl esters in a mixture of sodium methoxide-methanol without any structural destruction. The main fatty acids in triacylglycerol (TG) fraction of the seed oils of Trichosanthes kirilowii are C18:2Ω6 (32.2 mol %), C18:3 9c.11t,13c (38.0 mol %) and C18:1Ω9 (11.8 mol %), followed with C16:0 (4.8 mol %) and C18:0 (3.1 mol %). The TG fraction was resolved into 20 TG molecular species according to the partition number (PN) by reversed-phase (RP)-HPLC. The main TG species were DTc2, MDTc and D2Tc, of which amounts reached 63 mol % of total TG molecular species. The TG sample was fractionated into 11 fractions according to the number of double bond in the molecule by Ag+-HPLC and the species of DTc2, MDTc and D2Tc were also eluted as main components. The TG species containing CTA showed unusual behaviours in the order of elution by HPLC ; first, TG moleular species of DTc2 (D; dienoic acid, Tc; punicic acid, Tci; α-eleostearic acid, M ; monoenoic acid, St; stearic acid) was eluted earlier than Mtc2, although they have the same PN number of 40, and, secondly, the species of DTci2 with eight double bonds was eluted earlier than that of D2Tci with seven double bonds. Intact TG of the seed oils of Momordica charantia contained mainly fatty acids such as C18:3Ω9c,11t,13t (57.7 mol %), C18:1Ω9 (17.4 mol %), C18:0 (12.3 mol %) and C18:2Ω6 (10.6 mol %), and was classified into 13 fractions by RP-HPLC. The main TG species were as follows ; MTci2 [(C18:1Ω9)(C18:3 9c,11t,13t)2, 39.1 mol %] and StTci2 [(C18:0)(C18:3 9c,11t,13t)2, 33.9 mol %] comprising about 73 mol % of total TG species, accompanied by DTci2 [(C18:2Ω6)(C18:3 9c,11t,13t)2, 7.3 mol %], D2Tci [ (C18:2Ω6)2(C18:3 9c,11t,13t), 3.6 mol %] and MDTci [(C18:1Ω9)(C18:2Ω6)(C18:3 9c,11t,13t), 3.5 mol %]. Simple TG species of Tci3 [(C18:3 9c,11t,13t)3] was present in a small amount of 1.4 mol %, but other simple TG species were not detected. The TG was also resolved into 11 fractions according to the number of double bond by Ag+-HPLC, and the species were mainly occupied by MTci2 [(C18:1Ω9)(C18:3 9c,11t,13t)2, 39.4 mol %] and StT-ci2 [(C18:0)(C18:3 9c,11t,13t)2, 35.4 mol %] DTci2 species with eight double bonds was also developed faster than D2Tci one with seven double bonds as indicated in the analysis of TG of the seed oils of T. kirilowii, and MTci2 species with cis, trans, trans-configurated double bond was eluted earlier than MTc2 species with cis, trans, cis-configurated double bond. The main components of fatty acid in total TG fraction isolated from the seed oils of of Aleurites fordii were in the following order ; C18:3 9c,11t,13t (81.2 mol %)〉 C18:2Ω6 (8.5 mol %)〉 C18:1Ω9 (5.4 mol %). With resolution of the TG by RP-HPLC, eight fractions such as Tci3, Dtci2, D2Tci, MTci2, PTci2 (P; palmi..

The lipids from the seeds of Pinus koraiensis mostly composed of triacylglycerols (TGs), in which linoleic acid (46.2 mol%) and oleic acid (25.6 mol%) are present as main components in the fatty acid composition. Surprisingly, they also have unusual fatty acids with δ5-double bond systems such as δ5.9.12-C18:3 (16.0 mol%), δ5.9-C18:2 (2.3 mol%) and δ5.11.14-C20:3 (0.8 mol%). Saturated fatty acids of palmitic, stearic and arachidic acid were present in less than 8.0 mol%. TG was resolved into 17 fractions by reverse-phase HPLC according to so-called partition number (PN) suggested by Plattner, in which TG molecules with δ5-NMDB acyl chains eluted later than did those with δ9-MDB acyl radicals. Ag+-HPLC separated the TG into 14 fractions more clearly than did those with δ9-MDB acyl radicals. Ag+-HPLC separated the TG into 14 fractions more clearly than did reverse-phase HPLC, and the complexity of δ5.9.12-C18:3 moiety with silver ion impregnated in the column bed was in the level between δ9.12.15-C18:3 (C18:3Ω3) and C18:2Ω6 (δ9.12-C18:2). In the Ag+-HPLC, it was found that the molecular species having a given-numbered double bonds widely spreaded in the acyl chains eluted earlier than those concentrated in one acyl chain. The main molecular species are (C18:2Ω6)2/δ5.9.12-C18:3 (14.8 mol%), C18:1Ω9/C18:2Ω6)2 (12.8 mol%) and C18:1Ω9/C18:2Ω6/δ5.9.12-C18:3 (10.9 mol%).