首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 78 毫秒
1.
文章主要阐述了废旧纺织品的来源、处理方法及回收再利用工艺,国内废旧纺织品回收再利用现状及"十二五"规划中废旧纺织品资源化利用的现状,并针对国内当前废旧纺织品回收再利用中存在的主要问题和缺陷提出相关建议。  相似文献   

2.
废旧纺织品作为可回收物具有可循环利用、再生利用的价值。废旧纺织品回收后再利用途径大致分为:再使用、再生利用、能源化利用三种。"十三五"以来,我国环境保护和循环经济法律法规的出台,再生资源行业转型升级指导意见和生活垃圾分类制度的实施,极大地推动了我国废旧纺织品回收再利用制度建设,加快了我国废旧纺织品回收再利用体系建设和行业发展。  相似文献   

3.
通过将可持续理念运用在纺织品行业,对废旧纺织品回收再利用的方法进行介绍、分析和对比,介绍了国内回收方式和分拣方式的发展现状,依据分拣后废旧纺织物的状态从传统物理回收利用法到新型化学及生物回收利用法的工艺过程、适用范围、优缺点等方面详细地研究分析,为纺织品可持续发展提供技术理论支持。  相似文献   

4.
阐述了废旧纺织品的国内外回收现状、废旧纺织品的回收方法及回收再利用工艺等。结合我国目前有关废旧纺织品循环利用现状,分析了我国废旧纺织品回收再利用的前景和发展趋势,为我国未来废旧纺织品的回收提出了一些建议。  相似文献   

5.
废旧纺织品作为一种可回收利用的资源,经过合理的回收利用,可节约大量纺织原材料资源以及水资源等其他资源。互联网背景下的废旧纺织品回收平台采用多种电商模式形成废旧纺织品回收体系,带来有利于绿色循环经济发展的积极动力。本文在废旧纺织品回收行业现状的基础上,深入分析了回收平台在推广方面存在的问题,进而从多渠道宣传、提升品牌形象和促进政策完善三个方面深入提出废旧纺织品回收平台的推广策略,以期进一步推动废旧纺织品回收行业的发展。  相似文献   

6.
《印染》2016,(24)
简述了循环经济发达国家制定的废旧纺织品循环利用相关法规及回收再利用体系,介绍了我国废旧纺织品回收再利用现状。废旧纺织品可通过机械法、物理法或化学法实现再利用;或利用新技术以废旧纺织品为原料,生产乙醇、沼气、细菌纤维素、羧甲基纤维素、重金属吸附剂或角蛋白等产品。简述了国外的废旧产品标准化体系,同时对我国废旧纺织品循环利用标准化体系建设提出建议,可从废旧纺织品回收、分类、加工处理技术、质量评价及标识等方面着手,从而制定规范性标准。  相似文献   

7.
正近年来,从政府、行业引导到企业主动攻破技术难关,废旧纺织品回收利用的探索脚步从未停歇,但发展之路并不平坦,从回收"无门"到回收箱大量"沉睡"社区街头,从回收"归宿"遭质疑到再利用技术难突破,我国离实现旧衣"零抛弃"似乎路漫漫。我国是纤维纺织品生产和消费大国,每年有2000多万吨废旧纺织品因无法回收利用而遭遇焚烧掩埋厄运。废旧纺织品回收利用关乎  相似文献   

8.
单巨川 《针织工业》2017,(12):71-74
分析了废旧纺织品回收与再利用企业的利润率及我国目前对二手衣服交易的限制,指出废旧纺织品的高值化利用是废旧纺织品的研究热点。文中阐述了废旧纺织品高值化利用的国内外研究现状,从升级利用和增值化加工两方面说明了提高废旧纺织品附加值的方法,以期推动我国废旧纺织品回收与再利用产业的发展。  相似文献   

9.
废旧纺织品具有量大面广的特点,但也存在回收清洁困难、再利用附加值较低等问题。文章重点介绍了废旧含棉纺织品回收利用过程中的脱色/溶解机理以及国内外相关研究进展,为废旧纺织品的科学研究和产业化利用提供理论依据。同时提出,需进一步加强废旧纺织品回收方法的调研与技术创新,加大废旧纺织品高值化再利用技术的开发力度,减少环境污染,最终实现废旧纺织品系统化、科学化发展。  相似文献   

10.
国内废旧纺织品资源受技术、市场接受度等影响,大量被当作垃圾掩埋或焚烧,造成资源浪费和环境污染。为提高我国废旧纺织品资源高值化循环利用水平,总结了废旧纺织品循环再生方法和技术难点,介绍了国内外废旧纺织品回收现状,重点分析了国内近年来废旧纺织品回收技术进展,并对比了不同回收技术路线特点。认为化学法回收是废旧纺织品回收高值化利用的较优方案,尤其是乙二醇醇解法再生路线;随着国内环保意识的逐渐加强和相关政策引导,废旧纺织品回收高值化再生市场将逐渐扩大,国内相关企业应尽早开展战略布局,着眼于相关技术的产业化进程。  相似文献   

11.
Since grapevine ( Vitis spp .) rootstock material is being traded increasingly as disbudded woody material a lack of distinctive morphological features on such material necessitates an alternative and reliable means of identification. Methods described here were developed for rapid and efficient extraction of DNA from woody samples rich in phenolic compounds and polysaccharides, and for subsequent identification of varieties by RAPD PCR. Using these methods, and with the application of only one selected RAPD primer, we were able to differentiate sixteen rootstock varieties, including the seven varieties most commonly used in Germany. Problems commonly encountered with reproducibility of RAPD patterns were avoided by choosing primers with a dinucleotide sequence and a high G/C content that allowed a rather high annealing temperature of 45°C. Methods described here should also be useful for other horticultural crops, especially those with woody tissues rich in phenolic compounds and polysaccharides.  相似文献   

12.
An internet website (http://cpf.jrc.it/smt/) has been produced as a means of dissemination of methods of analysis and supporting spectroscopic information on monomers and additives used for food contact materials (principally packaging). The site which is aimed primarily at assisting food control laboratories in the European Union contains analytical information on monomers, starting substances and additives used in the manufacture of plastics materials. A searchable index is provided giving PM and CAS numbers for each of 255 substances. For each substance a data sheet gives regulatory information, chemical structures, physico-chemical information and background information on the use of the substance in particular plastics, and the food packaging applications. For monomers and starting substances (155 compounds) the infra-red and mass spectra are provided, and for additives (100 compounds); additionally proton NMR are available for about 50% of the entries. Where analytical methods have been developed for determining these substances as residual amounts in plastics or as trace amounts in food simulants these methods are also on the website. All information is provided in portable document file (PDF) format which means that high quality copies can be readily printed, using freely available Adobe Acrobat Reader software. The website will in future be maintained and up-dated by the European Commission's Joint Research Centre (JRC) as new substances are authorized for use by the European Commission (DG-ENTR formerly DGIII). Where analytical laboratories (food control or other) require reference substances these can be obtained free-ofcharge from a reference collection housed at the JRC and maintained in conjunction with this website compendium.  相似文献   

13.
The characterization of the aromatic profile of several apricot cultivars with molecular tracers in order to obtain objective data concerning the aromatic quality of this fruit was undertaken using headspace–solid phase microextraction (HS–SPME). Six apricot cultivars were selected according to their organoleptic characteristics: Iranien, Orangered, Goldrich, Hargrand, Rouge du Roussillon and A4025. The aromatic intensity of these varieties measured by HS–SPME–Olfactometry were defined and classified according to the presence and the intensity of grassy, fruity and apricot like notes. In the six varieties, 23 common volatile compounds were identified by HS–SPME–GC–MS. Finally, 10 compounds, ethyl acetate, hexyl acetate, limonene, β-cyclocitral, γ-decalactone, 6-methyl-5-hepten-2-one, linalool, β-ionone, menthone and (E)-hexen-2-al were recognized by HS–SPME–GC–O as responsible of the aromatic notes involved in apricot aroma and considered as molecular tracers of apricot aromatic quality which could be utilized to discriminate apricot varieties.  相似文献   

14.
The advent of the functional barrier concept in food packaging has brought with it a requirement for fast tests of permeation through potential barrier materials. In such tests it would be convenient for both foodstuffs and materials below the functional barrier (sub-barrier materials) to be represented by standard simulants. By means of inverse gas chromatography, liquid paraffin spiked with appropriate permeants was considered as a potential simulant of sub-barrier materials based on polypropylene (PP) or similar polyolefins. Experiments were performed to characterize the kinetics of the permeation of low molecular weight model permeants (octene, toluene and isopropanol) from liquid paraffin, through a surrogate potential functional barrier (25 μm-thick oriented PP) into the food simulants olive oil and 3% (w/v) acetic acid. These permeation results were interpreted in terms of three permeation kinetic models regarding the solubility of a particular model permeant in the post-barrier medium (i.e. the food simulant). The results obtained justify the development and evaluation of liquid sub-barrier simulants that would allow flexible yet rigorous testing of new laminated multilayer packaging materials.  相似文献   

15.
A 9% whey protein (WP) isolate solution at pH 7.0 was heat-denatured at 80°C for 30 min. Size-exclusion HPLC showed that native WP formed soluble aggregates after heat-treatment. Additions of CaCl2 (10–40 mM), NaCl (50–400 mM) or glucono-delta-lactone (GDL, 0.4–2.0%, w/v) or hydrolysis by a protease from Bacillus licheniformis caused gelation of the denatured solution at 45°C. Textural parameters, hardness, adhesiveness, and cohesiveness of the gels so formed changed markedly with concentration of added salts or pH by added GDL. Maximum gel hardness occurred at 200 mM NaCl or pH 4.7. Increasing CaCl2 concentration continuously increased gel hardness. Generally, GDL-induced gels were harder than salt-induced gels, and much harder than the protease-induced gel.  相似文献   

16.
17.
BADGE.2HCl and BFDGE.2HCl were determined in 28 samples of ready-to-drink canned coffee and 18 samples of canned vegetables (10 corn, 5 tomatoes and 3 others), all from the Japanese market. HPLC was used as the principal analytical method and GCMS for confirmation of relevant LC fractions. BADGE.2HCl was found to be present in one canned coffee and five samples of corn, BFDGE.2HCl in four samples of canned tomatoes and in one canned corn. No sample was found which exceeded the 1mg/kg limit of the EU for the BADGE chlorohydrins. However the highest concentration was found for the sum of BFDGE.2HCl and BFDGE.HCl.H2O at a level of 1.5mg/kg. A Beilstein test confirmed that all cans containing foods contaminated with BADGE.2HCl or BFDGE.2HCl had at lest one part coated with a PVC organosol.  相似文献   

18.
The levels of bisphenol-F-diglycidyl ether (BFDGE) were quantified as part of a European survey on the migration of residues of epoxy resins into oil from canned fish. The contents of BFDGE in cans, lids and fish collected from all 15 Member States of the European Union and Switzerland were analysed in 382 samples. Cans and lids were separately extracted with acetonitrile. The extraction from fish was carried out with hexane followed by re-extraction with acetonitrile. The analysis was performed by reverse phase HPL C with fluorescence detection. BFDGE could be detected in 12% of the fish, 24% of the cans and 18% of the lids. Only 3% of the fish contained BFDGE in concentrations considerably above 1mg/kg. In addition to the presented data, a comparison was made with the levels of BADGE (bisphenol-A-diglycidyl ether)analysed in the same products in the context of a previous study.  相似文献   

19.
20.
This paper describes the second part of a project undertaken to develop certified mussel reference materials for paralytic shellfish poisoning toxins. In the first part two interlaboratory studies were undertaken to investigate the performance of the analytical methodology for several PSP toxins, in particular saxitoxin and decarbamoyl-saxitoxin in lyophilized mussels, and to set criteria for the acceptance of results to be applied during the certification exercise. Fifteen laboratories participated in this certification study and were asked to measure saxitoxin and decarbamoyl-saxitoxin in rehydrated lyophilized mussel material and in a saxitoxin-enriched mussel material. The participants were allowed to use a method of their choice but with an extraction procedure to be strictly followed. The study included extra experiments to verify the detection limits for both saxitoxin and decarbamoyl-saxitoxin. Most participants (13 of 15) were able to meet all the criteria set for the certification study. Results for saxitoxin.2HCl yielded a certified mass fraction of <0.07 mg/kg in the rehydrated lyophilized mussels. Results obtained for decarbamoyl-saxitoxin.2HCl yielded a certified mass fraction of 1.59+/-0.20 mg/kg. The results for saxitoxin.2HCl in enriched blank mussel yielded a certified mass fraction of 0.48 +/- 0.06 mg/kg. These certified reference materials for paralytic shellfish poisoning toxins in lyophilized mussel material are the first available for laboratories to test their method for accuracy and performance.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号