Textile dye

Nearly all textile materials are colored after fabrication and before final finishing. The coloration of fibers and fabrics through dyeing is an integral part of textile manufacturing. This book discusses in detail several emerging topics on textile dyeing. The pretreatment of textiles prior to dyeing is addressed by several authors. Menezes and Choudhari present chemical alternatives to traditional pretreatment, while Tavcer discusses enzyme pretreatment procedures.

402p cucdai_1 14-10-2012 137 23   Download

In this study, the effect of textile dye (Optilan Red) toward microalgae Chlorella vulgaris was monitored for a period of 96 hours. The parameters such as specific growth rate (SGR), EC50, protein, chlorophyll, carotenoid and elemental composition of the microalgae were recorded. Results showed that SGR for C. vulgaris decreased with increase in concentration of dye and a significant decrease was noticed upto 20 ppm however, further increase in concentration showed no growth of the organism. EC50 for Optilan Red was found to be 23.16 ppm.

10p caygaocaolon5 27-05-2020 6 0   Download

The textile dye industries consume a substantial amount of water and produce extensive amount of waste which is contaminated by dyes like reactive dyes, azo dyes, many types of aerosols and much more non-degradable waste materials. The toxic effects of dyestuff and other organic compounds from modern effluents are harsh on human beings and also for regular habitat. Currently, most of the available dyes are aromatic and heterocyclic compounds with complex functional groups that can be converted into aromatic amines which are proved to be carcinogenic.

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The extensive use of fascinating colorful dyes during textile manufacturing indirectly causes severe environmental problem. These dyes exert toxic effects on terrestrial and aquatic life forms, imparting photosynthesis and other metabolic processes. Color is an escalating problem in industrial wastewater. Hence, there is a pressing need to eradicate this contaminant for a sustainable environment. This investigation was directed to isolate and characterized potential bacteria which can efficiently decolorize common recalcitrant textile dye Yellow CRG.

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Textile industry is a leading industry for most countries, such as China, Singapore, UK, Bangladesh, Italy, Turkey etc. But, environmental pollution is one of the main results of this industry. Parralel to usage of huge amounts of water ad chemicals, the textile dyeing and finishing industry is one of the major polluters among industrial sectors, in the scope of volume and the chemical composition of the discharged effluent (Pagga & Brown, 1986).

162p nhatkyvodanh 24-07-2012 53 11   Download

The present study was conducted to investigate the impact of textile dye on the early seedling stage of 3 crops: barley, maize, and wheat. Seeds were imbibed in different concentrations of textile dye for 12 h and were then grown in a controlled growth room for 8 days with a related dye solution.

9p vi4mua 24-02-2019 14 0   Download

The free electrons and holes then involved in decolorization processes through reduction or oxidation reactions. The effects of TiO2 catalyst amounts, irradiation time and polyol concentrations on dye decolorization were investigated. The decolorization efficiency significantly increased with the increasing irradiation time, SED concentrations and certain amounts of TiO2.

7p elandorr 03-12-2019 6 0   Download

Nowadays, synthetic dyes are widely used in textile, leather, cosmetics, paper, food and pharmaceutical industries instead of natural dyes due to its availability, stability, low cost and color intensity which emerges a new problem of residual color in the discharged effluent. Improper discharge of dye effluent in aqueous ecosystems is aesthetically unpleasant and impedes photosynthetic activity reducing sunlight penetration, dissolved oxygen concentration and water quality in total.

9p cothumenhmong1 11-12-2019 13 0   Download

European Union (EU) environmental legislation has developed over the last 30 years and comprises today some 300 legal acts and a large number of other policy documents of relevance for EU environmental policy. Section 1.2.1 of this chapter gives a general introduction to the EU forms of legislation and the principles of the EU environmental policy. The legislation related to the environmental aspects of textile processes in general, primarily the emissions to water and air, is discussed in sections 1.2 to 1.6....

243p 951628473 07-05-2012 81 17   Download

Human genetics is the medical field with the most rapid progress. This book aims to provide an overview on some of the latest developments in several genetic diseases. It contains 14 chapters focused on various genetic disorders addressing epidemiology, etiology, molecular basis and novel treatment options for these diseases. The chapters were written by 41 collaborators, from 8 different countries in Europe, Asia, and America, with great expertise in their field. Chapters are heterogeneous, offering a welcomed personalized view on each particular subject....

268p phoebe75 19-02-2013 49 7   Download

Xử lí hiếm khí hỗn hợp nước thải từ các công đoạn nhuộm và hồ của Công ty Dệt nhuộm Minh Khai trên hệ thiết bị xử lý bùn hoạt tính 20l đã được tiến hành, ảnh hưởng của tỉ lệ giữa COD nước thải nhuộm và COD nước thải hồ, COD đầu vào, thời gian lưu và tải lượng COD đến khả năng xử lý đã được nghiên cứu và các số liệu động học của quá trình đã được xác định.

7p lalala05 30-11-2015 31 1   Download

Native polyacrylamide gel electrophoresis showed the responsibility of the laccase enzyme in decolorization. Rapid and high textile dye decolorization through the selection of appropriate conditions could facilitate the development of more economical and environmentally friendly processes.

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The present investigation depicts the development of a simple and low cost method for the removal of color from textile dyeing and printing wastewater using ZnO as photocatalyst supported with porous activated carbon (AC). Photocatalytic degradation studies were carried out for water soluble toxic alizarin cyanin green (ACG) dye in aqueous suspension along with activated carbon (AC) as co-adsorbent. Different parameters like concentration of ACG dye, irradiation time, catalyst concentration and pH have also been studied.

6p kethamoi1 17-11-2019 5 0   Download

The research investigated the performance of combined pro cess (flocculation pretreatment-pho - to catalysis). The characteristics of nano flocculation and photocataly were evaluated by simulated dye and surfactant wastewater. In the coagulation and settling period, decolorization rate of five dyes wastewater by nano flocculant was higher than 95%. In the photocatalytic period, degradation of twelve sodium dodecyl benzene sulfonate reached 33%.

6p mentospurefresh 29-11-2019 2 0   Download

Water is a essential source, nowadays days the resources of the water and its availability is lacking. Industrial pollutions like textiles, leather, food industries, pharmaceuticals are the major part of pollutants and creating a major problems. Especially textile areas, uses high colorant synthetic chemical dyes, and also recalcitrant, mutagenic in nature.

5p chauchaungayxua3 07-02-2020 3 0   Download

Increasing industrialization and urbanization result in the discharge of waste to the environment, which in turn creates more pollution. Environmental biotechnology is constantly expanding its efforts in the biological treatment of colored textile effluents, which is an environmental friendly and low cost alternative to physico-chemical decomposition processes.

8p angicungduoc6 20-07-2020 2 0   Download

Wet processing of textiles uses large quantities of water, and electrical and thermal energy. Most of these processes involve the use of chemicals as assisting, accelerating or retarding their rates and are carried out at elevated temperatures to transfer mass from processing liquid medium across the surface of textile material in a reasonable time. So, we can use some natural materials and some physical tools to reduce the chemicals, water, energy and pollution.

132p nhatkyvodanh 24-07-2012 69 12   Download

The fibre is spun into yarn, which is then processed into fabric in a weaving or knitting mill. After dyeing and finishing, the woven material is ready for delivery either directly to a manufacturer of textile products to finally get stitched into clothes that we wear. Invite you to refer to Part 2 of the document.

77p tramnamcodon_07 26-04-2016 49 7   Download

Over the decades there have been several papers on the coloration of cotton-based textiles. The number of articles dealing with the processing of cotton, including preparation, dyeing, and finishing, may be in the thousands. An investigation of the possible causes of problems occurring in the coloration of textiles revealed that a comprehensive review of case studies and scientific analysis would be a welcome addition to the already rich pool of knowledge in this area.

84p tramnamcodon_07 26-04-2016 41 4   Download

This study investigated the Photo-Fenton process in textile wastewater treatment by using textile synthesis wastewater made of Symafix Red Dye solution. The aim of the study was to investegate the factors that influent to the photo-Fenton process such as contact time, pH, H2O2 and Fe2+conectrations, and UVexposure in order to research the optimum values of this process.Treatment of textile wastewater was carried out at ambient temperature in a batch reactor.

8p cumeo3000 01-08-2018 24 4   Download