Decolorization on Indigo Dyeing Wastewater by Laccase from Coriolus versicolor

[ Object] The study aimed to discuss the decolorization on indigo dyeing wastewater by laccase from Coriolus versicolor. [ Method ] Firstly, the effects of temperature, pH, indigo concentration, HBT concentration, laccase dosage on the decolorization of indigo dyeing wastewater by laccase/HBT, and then the synergism of laccase and acid cellulase was analyzed. [Result] Using ABTS as the substrate, the kinetic parame- ters, K,, and Vmax, were 0.318 mmol/L and 0.035 5 mmol/（ L . min） respectively. The decolorization rate of indigo reached 96.5% when the lacca- se acted on indigo for 40 min with HBT as an introducer at temperature 50 ℃, pH =4.5, indigo concentration 100 mg/L, HBT concentration 0.1% and laccase dosage 100 lU/L. Due to the synergism of laccase and acid cellulase during the bio-finishing of blue jeans, the backstaining degree of blue jeans reduced by 85% when the amount of laccase added was 15 000 IU/kg. Menawhile, the synergism of the laccase and acid cellulase de- creased indigo concentration in wastewater by 83.8%. [ Conclusion ] The laccase from Coriolus versicolor had a good prospect in the bio-finishing of blue jeans and the decolorization of indigo dyeing wastewater.

Study on the Camouflage-Protective and Dyeing Properties of Natural Dye Indigo

There are two major camouflage protections in modern military tactics:UV-protection and near infrared camouflage.However,not all natural and composite dyestuffs provide the mentioned properties.In this study,the cotton fabric was dyed with natural indigo and the natural indigo dyeing process was optimized.Green leaves were chosen as the simulating object,and the camouflage properties of the dyed cotton fabric were evaluated.It was observed that the dyed cotton fabric had good UV-protection and near-infrared camouflage properties.The UV-protection effect was strongly dependent on the absorption characteristics of natural indigo for UV radiation.The near infrared camouflage effect was mainly dependent on the reflection spectrum characteristics of natural indigo in the near infrared waveband.

Synthesis of Niobium Doped ZnO Nanoparticles by Electrochemical Method: Characterization, Photodegradation of Indigo Carmine Dye and Antibacterial Study

Niobium doped Zincoxide nanoparticles has been synthesized through electrochemical method and characterized by UV-Visible spectroscopy, IR Spectroscopy, SEM, XRD, ICPMS and EDAX data. The UV-Visible spectroscopy result reveals that the band gap energy of ZnO/Nb2O5 nanoparticles to be 3.8 eV. The XRD results show that the crystallite size is to be 31.9 nm. The ICPMS data indicate the presence of 3,3461,328 counts of 93 Nb and 577,906,390 counts of 66 Zn. An improvement in the photocatalytic degradation of Indigocarmine dye (IC) in comparison to commercially available pure ZnO was observed. The photodegradation efficiency for ZnO/Nb2O5 and ZnO were found to be 97.4% and 52.1% respectively. The enhancement in photocatalytic activity of ZnO/ Nb2O5 was ascribed to the extended light absorption range and suppression of electron hole pair recombination upon Nb loading. The antibacterial activity of ZnO/Nb2O5 nanoparticles was investigated. These particles were shown to have an effective bactericide.

Copper Oxide Inked with Dye Obtained from the Lactarius Indigo Fungus for Energy Production

The results obtained from the characterization of a copper deposit on indium doped tin oxide (ITO), inked with natural dye extracted from the Lactarius indigo fungus, for use in Gratzel type solar cells are reported. An electrolyte composed of 0.1 M HNO3 and 0.5 M CuSO4 was used, this solution was prepared for copper deposits on the ITO. Cyclic voltammetry was performed at different scan rates to obtain the reduction zone for deposition between potentials of ?100 to ?500 mV. The dye was obtained from the indigo Lactarius fungus from maceration, once the inked deposits were obtained, characterizations were performed, the initial test was to obtain the Ultraviolet-Visible (UV-visible) of the pure dye, and later the same test was performed on the inked oxide. Electrochemical Impedance Spectroscopy (EIS) was performed on the samples, as well as Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM), to characterize the material properties for its application.

绿色复合还原剂在靛蓝染色中的应用

靛蓝是纺织工业中最重要的还原染料之一,靛蓝染色时,必须在还原剂作用下转化为水溶性隐色体形式。该研究旨在寻找一种复合绿色还原剂,以替代靛蓝染色中使用的对环境不利的连二亚硫酸钠(sodium dithionite,SD)。首先,比较了三种还原剂,SD、二氧化硫脲(thiourea dioxide,TD)和葡萄糖(glucose,GS)的稳定性。采用TD作还原剂剧烈搅拌2h仍能保持靛蓝染色所需还原电位,而SD和GS剧烈搅拌1h达不到靛蓝染色所需的还原电位,靛蓝染色性能下降。鉴于GS的环境友好性,选择TD与GS复合物作为靛蓝染色的复合绿色还原剂。其次,分析复合还原剂不同质量比对棉织物靛蓝染色的还原电位、pH值和K/S值的影响。当TD与GS的质量比为7:3,体系具有稳定的还原电位,可获得较好的染色性能。

基于蒙塞尔色彩体系的紫草染色实践研究

以当代设计视角为切入点,以符合现代设计理念与生产需求为目的,引入蒙塞尔色彩体系作为紫草染色实践的指导原则。通过分析紫草染色在色相、明度、艳度等方面,受媒染剂、染色温度、染液浓度等因素影响的变化规律,建立紫草染色谱与色彩立体系统模型。有助于突破传统紫草染色在设计生产中的限制,为其在当代的传承与发扬提供实践研究与设计创新的新思路。

传统蓝染的植物和染法及其工艺简史

蓝染是一种传统工艺,适用于不同社会阶层与各种纤维染色,也是世界许多民族的重要文化表现形式。蓼蓝、木蓝、菘蓝、马蓝(板蓝)是其常用染材,而别名吴蓝、苋蓝则为此四类所涵括。植物虽有差别,却皆含有靛苷成分,故可以直接染色法、水煮染色法、发酵还原染色法等,将靛蓝附着在织物纤维上。千百年来,人们就地取材不断积累经验,更是在融入社会生活、习俗与政治、经济因素的同时,通过广泛地交流形成独具特色的蓝染文化圈。

非遗艺术融入社区老年教育的路径研究——以客家蓝染手工技艺为例

将非遗艺术引入社区老年教育,对于传承优秀传统文化,丰富老年人的精神文化生活,提升文化内涵,创造经济价值,增加社会情感有着重要的作用和意义。文章从构建传承平台,建立资源共享,打造教育品牌,加强实践操作和再就业助力社区教育等方面分析了客家蓝染非遗手工技艺引入社区老年教育的方法。

HRP酶-H_(2)O_(2)体系对靛蓝染色牛仔织物脱色整理

将HRP酶-H_(2)O_(2)体系应用于靛蓝染色牛仔织物的脱色返旧整理中,探究了HRP酶-H_(2)O_(2)脱色整理工艺对靛蓝染色牛仔织物K/S值和脱色率的影响,确定了最佳脱色整理工艺,并与漆酶、酸性纤维素酶处理后织物的脱色效果进行了对比。结果表明,HRP酶-H_(2)O_(2)体系对靛蓝染色牛仔织物具有很好的脱色效果,而且没有返沾色,对棉纤维没有损伤。

非遗传承视角下蓝染文化融入鞋靴的设计方法与创意实践

本文从非物质文化遗产传承的视角研究蓝染技艺文化融入鞋靴类产品的设计方法与创意思维。首先分析了蓝染非遗技艺的历史发展、工艺方法与类别应用,进而结合中外优秀设计案例分别从蓝染文化要素产品形态、技艺方法、材料工具、图案色彩和文化内涵等角度提出蓝染文化融入鞋靴设计的3种方法:直接应用法、元素创新法和文化融入法;以国家级非物质文化遗产蜡染、枫香染为灵感和设计要素,通过设计案例以直接应用、重组应用和重构应用3种形式研究了蓝染文化融入鞋靴类时尚产品进行创意设计的具体思路和实践效果,重点以纹样的数字化提取与再设计进行了文化创意鞋靴的设计。通过理论方法的提出和创意设计实践,有助于推动传统手工技艺与现代时尚生活产品相结合,引领和满足大众对于文化产品的消费,研究对于不同类型的非遗文化开展创造性保护和创新性发展有一定的参考价值。

迭代涤纶的中药基天然染料染色

为拓展天然染料在合成纤维染色方面的应用,以三种中药为原料对迭代涤纶进行染色,通过单因素试验探讨染色温度、时间、染料用量及pH对织物K/S值的影响。结果表明:青黛采用还原染色,碱剂氢氧化钠2 g/L、还原剂葡萄糖40 g/L,染色温度100℃,染色时间40 min,染料质量分数为3%(omf),染液pH为6;五味子及黄连采用直接染色,五味子染料质量分数50%,染液pH为4,黄连染料质量分数为40%,染液pH为7,染色温度100℃,染色时间40 min。染色织物的耐皂洗色牢度均达到3级以上,耐摩擦色牢度均达到4级以上。

Abiotechnology of Indigofera tinctoria L. on the Saline Land of Aral Sea Basin and Producing of the Natural Plant Indigo Pigment for the Industry

The possibility of cultivation of lndigofera tinctoria L. plants in ecologically degraded and saline lands of the Aral Sea Basin was studied. A new salt-resistant Indigofera plant variety ＂Feruz-l＂ was producing by the classic methods of genetics and modem biotechnology.Agro-technology of cultivation as main and secondary culture after wheat was developed and recommended to the farmers of the country.The biotechnology of natural plant pigment indigo extraction has been developed and was recommended for using in different fields of industry： textile, pharmacy-pharmacology, perfume-cosmetic, architectural-decorative and food industry. Quantitative and qualitative HPLC （high pressure liquid chromatography） method of determination of plant natural indigo has been also developed.

蓝染融入皮革文创产品设计探析

非遗蓝染元素具有浓厚的民俗风情和艺术感染力,将蓝染元素融入皮革文创产品不仅能够传承和弘扬传统文化,还能提升产品的艺术性和市场竞争力,同时促进文化的传播和交流。文章旨在探讨非遗蓝染元素融入皮革文创产品设计的方法。文章分析了蓝染的历史、文化价值以及染色技术原理,并结合具体设计案例探讨了蓝染与皮革产品结合的方法,为其后续开发与设计改进提供参考。

Cotton Fiber Recycling Processes in Indigo Denim Fabrics

This paper studied the recycling process of cotton fibers in indigo denim fabrics.X-ray diffraction(XRD)and Fourier transform infrared(FTIR)spectroscopy were used to characterize the crystal morphology,the grain size and the chemical composition of cotton fibers after alkali treatment.The mechanical property test and the bulk length test were done.The results show that the main functional group of the obtained regenerated cotton still exists,but the absorption peak of the bound alkali appears at the wavenumber of 3701 cm-1,and the crystallinity shows a downward trend.The K/S value increases first and then decreases,and the mechanical properties and the length of the body have a certain degree of damage.

Optimization of Preparation Conditions of ZnO-TiO2 Nanoparticles by Sol-Gel Technique for Photodegradation Indigo Carmine

The results of a laboratory-scale study of an environmentally friendly water treatment method are presented, where the dyes in the industrial textile wastewater were removed by photocatalytic process. ZnO-TiO2 nanoparticles as photocatalyst has been prepared via sol-gel technique. Several factors were studied in order to find the conditions that could be used to synthesize this photocatalyst for optimum degradation of Indigo Carmine dye in aqueous solutions. The optimum condition for preparation of ZnO-TiO2 mixed oxide are 1.5 TiO2/ZnO, 4 C2HsOH/TIP, 4 H20/TIP, 0.3 HNO3/TIP molar ratios, without aging, 550 ℃ calcination temperature for 5 hrs at which the surface area and the photocatalytic activity are 186.1 m^2/g and 96.1, respectively. Generally, the photocatalytic activity of the samples prepared by sol-gel technique is the highest activity. Details of the synthesis procedure and results of the characterization studies of the produced xerogel are presented in this paper.

天然靛蓝间接电化学染色性能的研究

以电能替代传统的保险粉还原靛蓝,是对靛蓝清洁染色工艺的新探索。文中分别以Fe^(3+)-TEA、Fe^(2+)-配体为阴极溶液,采用间接电化学对天然靛蓝进行还原染色工艺。发现以Fe^(3+)-TEA为阴极溶液时,优化后施加电压为13.00 V,阴极还原电位趋于-660 mV,在间接电化学反应器中仍然可以对织物进行上染,但上色不好,染色效率不高,长达7 h的还原时间,测得织物的K/S值虽有上升,仍仅为0.490 5;以Fe^(2+)-配体体系对靛蓝进行还原,得出最佳配体为葡萄糖酸钙,优化后的还原染色条件为1.500 g/L天然靛蓝、2.780 g/L FeSO_(4)·7H_(2)O、4.350 g/L葡萄糖酸钙、1.600 g/L NaOH,在10.00 V电压下电化学还原20 min后,将织物放入浸染,浸染时长为9 min,K/S值为11.204 0。

靛蓝废水无机盐环境下铝极板溶解与电化学行为分析

为提升靛蓝染色废水电絮凝效率,确定电絮凝过程中最佳水解金属盐形态形成条件,采用Al-Ferron逐时络合比色法探讨电絮凝过程中初始pH、共存阴离子种类、电流密度对铝盐形态分布的影响,同时监测絮体Zeta电位、终止pH、体系电流密度与电导率的变化。通过显微镜观察电极溶解腐蚀情况,利用电化学工作站测定电极的极化曲线与电化学阻抗谱,分析其电化学行为。结果表明,靛蓝废水电絮凝过程中,最佳初始pH范围为6~7,此时具有优势絮凝形态的中聚合态铝(Al_(b))含量较高;Cl–的加入可抑制电极钝化,提升电絮凝反应速率;低电流密度有利于电极均匀腐蚀和Al_(b)的存在,当电流密度为15 m A/cm(2)时体系内Al_(b)含量达4.76 mg/L,可产生较好的絮凝效果。

基于周期换向技术的靛蓝染色废水电絮凝处理

为降低极板腐蚀和电能消耗,实现对悬浮污染物的有效分离,以铁、铝金属为电极,探究周期换向技术条件下施加电压、时间、电解初始pH值等参数对电絮凝效果的影响,并检测极板腐蚀情况和溶解效率。结果表明:在周期换向电源下,施加电压25V时,设定铁-铝电极极板间距为2cm,废水初始pH值为5.00,经过25min电絮凝后,废水上清液COD值为180.7mg/L,脱色率达99.00%,絮凝率为86.10%,显示出优异的电絮凝效果。与直流电源相比,周期换向电化学体系中,电极腐蚀及钝化现象得到有效缓解,铁、铝电极的损失率仅为0.6%,溶解效率高于80.0%;COD去除比能耗为0.39,相当于直流电源的27.3%.

靛蓝染料染色技术研究进展

靛蓝染料是染整行业常用的染料之一。综述了靛蓝的来源、还原和染色技术、色牢度提升等方面的研究进展。为了提升靛蓝染色的生态性,靛蓝还原染色逐步从无机还原剂还原朝着更加生态环保的有机还原剂还原、生物还原和电化学还原方向发展;靛蓝染色织物色牢度提升方面的研究重点在耐摩擦色牢度、耐日晒色牢度和耐臭氧色牢度3个方面。

清代团鹤纹石青缎的染料鉴定及色彩分析

纺织品文物是人类历史文化的珍贵遗产,色彩是纺织品文物重要的外在表现,而染料是色彩表现的基本内核。染料考古通过对文物的色彩、染料进行测试,结合古文献记载,可获得染料来源、染色工艺、内在审美、商品流通、文物年代和产地等重要历史信息。本文以中国丝绸博物馆馆藏清代团鹤纹石青缎为例,运用高效液相色谱—质谱联用技术检测丝织品文物上的染料,成功鉴别出红色染料苏木,蓝色染料靛青,黄色染料姜黄、黄檗、黄荆等,并结合相关历史文献对清代纺织品色彩的使用进行了分析。苏木与姜黄套染可得杏黄色,黄檗、黄荆与靛青套染可得绿色。该文物是在清代纺织品中发现使用黄荆染料的首个案例。该文物的鉴别结果为清代丝织品染色研究提供了科学依据,结合色彩分析有助于研究清代时期的经济、文化历史,亦可为清代丝织品色彩复制和文物修复及展示方法提供参考。