The Comparison between a Natural Reducing Agent and Sodium Dithionite in Vat, Indigo and Sulphur Dyeing on Cotton Fabric

2012 ◽  
Vol 441 ◽  
pp. 207-211 ◽  
Author(s):  
Zahra Motaghi
Keyword(s):  
Textile Industry ◽  
Waste Water Treatment ◽  
Sodium Dithionite ◽  
Reducing Agent ◽  
Point Of View ◽  
Color Strength ◽  
Dyeing Process ◽  
Pollution Problem ◽  
Textile Dyeing ◽  
Substance Consumption

In recent years, the use of low-environmental impact biotechnology giving rises to new types of treatment in the textile industry. From the environmental point of view, particularly the textile dyeing process constitutes a major pollution problem due to the variety and complexity of chemicals employed. In most industrial vat and indigo, sulphur dyeing processes, all of them are reduced mainly using sodium dithionite. This process produces large amounts of hazardous by-products which increase the costs for waste water treatment. Hence, many attempts are being made to replace the environmentally unfavorable sodium dithionite by ecologically more attractive alternatives, such as organic reducing agents or catalytic hydrogenation and natural reducing agent. In this paper ,a natural reducing agent is introduced that comes from a plant and have been studied on the substance for comparison it with sodium dithionite on vat, indigo and sulphur dyeing on cotton fabrics. The color strength of the samples was analyzed by Reflective Spectrophotometer and the color fastness of them was investigated. The results show that, the use of natural reducing agent in natural indigo dye and sulphur dye is better and for the rest of them has almost good advantage, but it cannot reduce synthetic indigo as well as sodium dithionite. Therefore, with introducing the substance, consumption of chemicals is minimized and vat, indigo and sulphur dyeing should be environmental.

Seawater as an alternative to dye cotton fiber with reactive dyes

2020 ◽  
pp. 004051752097248
Author(s):  
Iêda Letícia de Souza Ferreira ◽  
José Ivan de Medeiros ◽  
Fernanda Steffens ◽  
Fernando Ribeiro Oliveira
Keyword(s):  
Textile Industry ◽  
Reactive Dye ◽  
Chemical Processing ◽  
Fastness Properties ◽  
Color Strength ◽  
Dyeing Process ◽  
High Consumption ◽  
Textile Dyeing ◽  
Very High ◽  
Intense Color

The textile industry is a sector completely dependent on water for its full functioning; on the other hand, water represents a very high cost in the production process. The textile chemical processing area is mainly responsible for the large consumption of water. On the opposite side of this high consumption there is an evident water crisis worldwide. That fact has led to many problems to textile companies, mainly for the preparation, dyeing and printing sectors. This present work focuses on an ecologically friendly alternative for cellulosic fiber dyeing processes using seawater. Dyeing cotton fabrics with reactive dye in three primary colors (blue, yellow and red) was performed, and the results compared with processes using distilled water. Samples dyed with seawater exhibit good uniformity, intense color (color strength – K/ S) and excellent washing and rubbing fastness properties compared to the conventional process. It was possible to observe also that the use of seawater did not affect the mechanical properties of the substrate. Thereby, it was verified that the use of seawater presents as a potential and important alternative to applications in the textile dyeing process.

scholarly journals Adsorption Properties of β- and Hydroxypropyl-β-Cyclodextrins Cross-Linked with Epichlorohydrin in Aqueous Solution. A Sustainable Recycling Strategy in Textile Dyeing Process

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 252 ◽  
Author(s):  
José Pellicer ◽  
María Rodríguez-López ◽  
María Fortea ◽  
Carmen Lucas-Abellán ◽  
María Mercader-Ros ◽  
...  
Keyword(s):  
Advanced Oxidation Process ◽  
Industrial Effluents ◽  
Second Order ◽  
Point Of View ◽  
Maximum Adsorption Capacity ◽  
Gravimetric Analysis ◽  
Dyeing Process ◽  
Textile Dyeing ◽  
Recycling Economy ◽  
Pseudo Second Order

β-cyclodextrin (β-CD) and hydroxypropyl-β-cyclodextrin (HP-β-CD) were used to prepare insoluble polymers using epichlorohydrin as a cross-linking agent and the azo dye Direct Red 83:1 was used as target adsorbate. The preliminary study related to adsorbent dosage, pH, agitation or dye concentration allowed us to select the best conditions to carry out the rest of experiments. The kinetics was evaluated by Elovich, pseudo first order, pseudo second order, and intra-particle diffusion models. The results indicated that the pseudo second order model presented the best fit to the experimental data, indicating that chemisorption is controlling the process. The results were also evaluated by Freundlich, Langmuir and Temkin isotherms. According to the determination coefficient (R2), Freunlich gave the best results, which indicates that the adsorption process is happening on heterogeneous surfaces. One interesting parameter obtained from Langmuir isotherm is qmax (maximum adsorption capacity). This value was six times higher when a β-CDs-EPI polymer was employed. The cross-linked polymers were fully characterized by nuclear magnetic resonance (NMR), Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA). Also, morphology and particle size distribution were both assessed. Under optimized conditions, the β-CDs-EPI polymer seems to be a useful device for removing Direct Red 83:1 (close 90%), from aqueous solutions and industrial effluents. Complementarily, non-adsorbed dye was photolyzed by a pulsed light driven advanced oxidation process. The proposed methodology is environmental and economically advantageous, considering the point of view of a sustainable recycling economy in the textile dyeing process.

Integrated waste water management for a small river basin - a case study

1998 ◽  
Vol 38 (11) ◽  
pp. 87-95
Author(s):  
R. Fenz ◽  
M. Zessner ◽  
N. Kreuzinger ◽  
H. Kroiss
Keyword(s):  
Waste Water ◽  
Water Management ◽  
River Basin ◽  
Rural Areas ◽  
Urban Areas ◽  
Waste Water Treatment ◽  
Point Of View ◽  
Political Issue ◽  
The North ◽  
Waste Water Management

In Austria approximately 70% of the population is connected to sewerage and to biological waste water treatment plants. Whereas the urban areas are already provided with these facilities to a very high extent, effort is still needed in rural areas to meet the requirements of the Austrian legislation. The way, this task should be solved has provoked much controversy. It is mainly the question, whether centralised or decentralised sewage disposal systems are preferable from the ecological and economical point of view, that became a political issue during the last 5 years. The Institute for Water Quality and Waste Management was asked to elaborate a waste water management concept for the Lainsitz River Basin, a mainly rural area in the north of Austria discharging to the Elbe river. Both ecological and economical aspects should be considered. This paper presents the methodology that was applied and the criteria which were decisive for the selection of the final solution.

scholarly journals Combination of wet fixation and drying treatments to improve dye fixation onto spray-dyed cotton fabric

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Lina Lin ◽  
Wenju Zhu ◽  
Cong Zhang ◽  
Md. Yousuf Hossain ◽  
Zubair Bin Sayed Oli ◽  
...  
Keyword(s):  
Cotton Fabric ◽  
Reactive Dye ◽  
Fixation Time ◽  
Drying Process ◽  
Combined Treatments ◽  
Fixation Rate ◽  
Dyeing Process ◽  
Textile Dyeing ◽  
Color Uniformity ◽  
Four Levels

AbstractThe conventional dyeing process requires a substantial amount of auxiliaries and water, which leaches hazardous colored effluents to the environment. Herein, a newly developed sustainable spray dyeing system has been proposed for cotton fabric in the presence of reactive dyes, which has the potential to minimize the textile dyeing industries environmental impact in terms of water consumption and save significant energy. The results suggest that fresh dye solution can be mixed with an alkali solution before spray dyeing to avoid the reactive dye hydrolysis phenomenon. After that, drying at 60–100 °C, wet fixation treating for 1–6 min, and combined treatments (wet fixation + drying) were sequentially investigated and then dye fixation percentages were around 63–65%, 52–70%, and above 80%, respectively. Following this, fixation conditions were optimized using L16 orthogonal designs, including wet fixation time, temperature, dye concentration, and pH with four levels where the “larger-the-better” function was selected to maximize the dye fixation rate. Additionally, the color uniformity and wash and rubbing fastnesses were at an acceptable level when both treatments were applied. Finally, the dyes were hydrolyzed after wet fixation, and the hydrolysis percentages were enhanced after the drying process.

Impact of accounting information system on corporate governance: evidence from Pakistani textile sector

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Samza Fatima ◽  
Muhammad Ishtiaq ◽  
Adnan Javed
Keyword(s):  
Corporate Governance ◽  
Textile Industry ◽  
Accounting Information ◽  
Business Environment ◽  
Point Of View ◽  
Primary Data ◽  
Specific System ◽  
Content Type ◽  
Accounting Information Systems ◽  
Textile Sector

Purpose Efficient corporate governance is always important to safeguard the interest of all the stakeholders in the business environment. Therefore, this study focuses on the investigation of the relationship between accounting information systems (AIS) and corporate governance in the textile sector of Pakistan. The textile sector is the backbone of the Pakistani economy and has an important contribution toward the gross domestic product and as well as exports of the country. Design/methodology/approach The data were collected from the finance managers with the sample size of 300 firms of All Pakistan textile mills association, self-delivery and collection method used. Both descriptive and inferential statistics used to analyze data through the Statistical Package for Social Sciences 23. Findings The findings of this study proved that AIS has a significant impact on corporate governance. It is important from the management point of view to record the daily transaction in a better way with the use of a specific system and every member uses the computerized system to accomplish their tasks in the organization. Originality/value The textile industry is the backbone of Pakistan’s economy. The study conducted in this paper by primary data and drawing original contributions in the existing literature. Moreover, the findings of this study are going to have considerable theoretical and practical implications for the market.

scholarly journals Reducing Energy and Water Consumption in Textile Dyeing Industry with Cleaner Production by Inlet-Outlet Modification to Reuse Wastewater

2021 ◽  
Vol 58 (S) ◽  
pp. 49-58
Author(s):  
Erkata Yandri ◽  
Rinaldi Idroes ◽  
Roy Hendroko Setyobudi ◽  
Carolus Boromeus Rudationo ◽  
Satriyo Krido Wahono ◽  
...  
Keyword(s):  
Water Consumption ◽  
Initial Conditions ◽  
Cleaner Production ◽  
Second Step ◽  
Similar Action ◽  
The Third ◽  
Dyeing Process ◽  
Modification Process ◽  
Textile Dyeing ◽  
Process Wastewater

Dyeing Finishing (DF) textile industries which consume a lot of energy, chemicals, water, etc., then produce a lot of wastewater which creates significant environmental problems, can be anticipated by applying Cleaner Production. This paper is presented to discuss the technical modification process of dyeing production machines, which reuse process wastewater to save water and energy consumption in the production process. For that reason, there are three steps taken. First, understand the process flow of the textile dyeing industry. Second, understand in detail the dyeing process of the Jet Dyeing (JD) machine. Third, implement steps on the floor, focusing on the JD machine, starting from the initial conditions until the third step. As a result, savings in water consumption per day for 10 JD machines were achieved by almost 50 %, with details; at the initial status 700 000 L, 600 000 L in the first step, 430 000 L in the second step, and finally 400 000 L in the third step. A similar action can be carried out in other processes, such as washing, de-sizing, or in other industries which also consume a lot of water and energy.

scholarly journals Traditional Knowledge of Plant Dyeing, Sustainable Practices and Potential for Improved Techniques by Monpa in Tibet, China

2020 ◽  
Author(s):  
Rong Yang ◽  
Yu Zhang ◽  
Sailesh Ranjitkar ◽  
Mingxiang Li ◽  
Yongjie Guo ◽  
...  
Keyword(s):  
Ethnic Group ◽  
Ethyl Alcohol ◽  
Textile Industry ◽  
Economic Value ◽  
Field Research ◽  
Economic Benefits ◽  
Body Parts ◽  
Color Strength ◽  
Alcohol Extract ◽  
Dyeing Properties

Abstract BackgroundNatural dyes used since historic times for coloring food, leather, textile fibers, and paint body parts. The use of natural dyes has suffered drastically under the influence of modern technologies in the textile industry and socio-economic changes. Hence, ethnobotanical studies of indigenous dye plants and dyeing craft in local communities are urged to protect their potential ecological and economic value. MethodsWe conducted semi-structured surveys on dye plants and traditional craft in 11 Monpa villages of Mêdog County, South-east Tibet, China. The cultural significance of local dye plants was evaluated by an index of cultural importance (CI). Field research was conducted to record the indigenous madder (the root of Rubia wallichiana Decne.) dyeing craft. An experiment was performed with aqueous extract and ethyl alcohol extract of residue remained after water extraction. These two dye solutions were respectively used to dye two fabrics with two biomordants and two metallic mordants by three mordanting methods. We evaluated color properties that were characterized by physicochemical evaluations using UV-visible spectroscopy and FTIR analysis. The dyed fabrics were evaluated by indicators of color strength and fastness including washing, rubbing, and perspiration. ResultsAltogether 15 species belong to 12 families were listed as dye plants, which were used in cloth and food dyeing. The CI of R. wallichiana was highest. Monpa ethnic group used madder directly or with metallic mordants. It was found experimentally that biomordants and metallic mordants were comparable in improving the dyeing properties of indigenous madder. The dyeing properties of both extracts of madder were equal or ethyl alcohol extraction was marginally better.ConclusionsUse of dye plants and indigenous knowledge of dyeing still present in the Monpa ethnic group. Our experiment revealed the feasibility of enhancing the dyeing property and reuse of the residue from madder dyeing. The improved dyeing and reuse of residue can improve the ecological and economic benefits of local meanwhile provide basic application research for the subsequent commercialization of plant dyes.

Synthesis of Adsorbent from Bagasse for Methylene Blue Adsorption

2021 ◽  
Vol 7 (2) ◽  
pp. 188-195
Author(s):  
Nurhasni Nurhasni ◽  
Sariana Harahap ◽  
Ahmad Fathoni ◽  
Hendrawati Hendrawati
Keyword(s):  
Methylene Blue ◽  
Textile Industry ◽  
Contact Time ◽  
Ph Effect ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Batch Method ◽  
Homogeneous Surface ◽  
Dyeing Process ◽  
Ft Ir

The ability of bagasse adsorbents to adsorb methylene blue without activation using 0.5 M H2SO4 solution was examined. Methylene blue is widely used in the textile industry because it produces bright colors, and the dyeing process is fast and easy. This research aims to determine the optimum adsorption conditions, namely the variations in contact time, dye concentration, adsorbent mass, and pH effect on methylene blue, which were carried out using the batch method. Furthermore, the adsorbents were characterized by FT-IR and SEM. The optimum state of the bagasse adsorbent to adsorb methylene blue dye has a mass of 0.5 grams, a contact time of 30 minutes, a concentration of 50 ppm, and a pH of 5. The character of the adsorbent after activation with H2SO4 was better than without activation. The highest adsorption efficiency of methylene blue dye in the batch method was 99.67%. The FTIR spectrum of the bagasse adsorbent showed OH, C-H, C=O, C=C, and C-O functional groups. The adsorption isotherm model for methylene blue dye follows the Langmuir isotherm since the graph obtained is linear with the correlation coefficient (R2) = 1, where the adsorbent has a homogeneous surface.

scholarly journals Technological Innovation in Biomass Energy for the Sustainable Growth of Textile Industry

2019 ◽  
Vol 11 (2) ◽  
pp. 528 ◽  
Author(s):  
Leonel Nunes ◽  
Radu Godina ◽  
João Matias
Keyword(s):  
Textile Industry ◽  
New Technology ◽  
Renewable Energy Sources ◽  
High Energy ◽  
Point Of View ◽  
Sustainable Growth ◽  
Biomass Energy ◽  
Energy Sources ◽  
Energy Costs ◽  
Steam Generation

The growing increase in world energy consumption favors the search for renewable energy sources. One of the existing options for the growth and sustainable development of such types of sources is through the use of biomass as an input. The employment of biomass as solid fuel is widely studied and is no longer a novelty nor presents any difficulty from the technical point of view. It presents, however, logistic obstacles, thus not allowing their direct dissemination in every organization that is willing to replace it as an energy source. Use of biomass can be rewarding due to the fact that it can bring significant economic gains attained due to the steadiness of the biomass price in Portugal. However, the price may rise as predicted in the coming years, although it will be a gradual rising. The main goal of this study was to analyze whether biomass in the case of the Portuguese textile industry can be a viable alternative that separates the possibility of sustainable growth from the lack of competitiveness due to high energy costs. The study showed that biomass can be a reliable, sustainable and permanent energy alternative to more traditional energy sources such as propane gas, naphtha and natural gas for the textile industry. At the same time, it can bring savings of 35% in energy costs related to steam generation. Also, with new technology systems related to the Internet of Things, a better on-time aware of needs, energy production and logistic chain information will be possible.

Dyeing Behavior of Indigo Reduced by Indirect Electrolysis

1997 ◽  
Vol 67 (9) ◽  
pp. 635-642 ◽  
Author(s):  
T. Bechtold ◽  
E. Burtscher ◽  
A. Turcanu ◽  
O. Bobleter
Keyword(s):  
Complex System ◽  
Sodium Dithionite ◽  
Reducing Agent ◽  
Cathodic Reduction ◽  
Laboratory Scale ◽  
Indirect Electrolysis ◽  
Conventional Process ◽  
Color Depth

Dispersed indigo dyestuff can be reduced by indirect electrolysis using an iron (II)-triethanolamine complex. The iron (III) form of the complex can be transformed to the iron (II) form by cathodic reduction, thus leading to a regenerable reducing agent. Electrochemically reduced indigo is tested in laboratory scale dyeing experiments, and the results of different reduction conditions in the dyebath are discussed. The influence of the concentration of the complex-system on the build-up of color depth and shade with increasing number of dips is discussed and compared with samples of the standard dyeing procedure using sodium dithionite as reducing agent. The results of the latter conventional process show that the dyestuff in the dyebath behaves in a manner similar to that when a regenerable Fe(II)-complex is used as the reducing agent.

Sign in / Sign up

Export Citation Format

Share Document