scholarly journals Treatment and reuse of reactive dye effluent from textile industry using membrane technology

2015 ◽  
Author(s):  
◽  
Martha Noro Chollom
Keyword(s):  
Textile Industry ◽  
Reactive Dye ◽  
Effluent Treatment ◽  
Water Recovery ◽  
Textile Processing ◽  
Membrane Processes ◽  
Membrane Performance ◽  
Pre Treatment ◽  
The Cost

The textile industry consumes large volumes of water and in turn produces substantial quantities of polluted effluents. Approximately 30% of reactive dyes used during the textile processing remain unfixed on fibres and are responsible for the colouration in effluents. Various conventional methods are being used to treat textile effluent. However, the disadvantage of these methods is that total colour removal is not achieved and chemical by-products are introduced from the use of chemicals. The water quality produced therefore does not meet the requirement for textile reuse. Membrane based processes provide interesting possibilities of separating hydrolysed dye stuff and dyeing auxiliaries, thereby reducing colouration and COD content. They can be employed to treat reactive dye bath effluent to recover the salts and water for the purpose of reuse. This study aimed at integrating membrane processes into the reactive dye bath of a textile industry. The objectives were to determine the quality of permeate produced in terms of removal of organics, ascertain its reusability for dyeing, investigate the production rate in terms of permeate fluxes and finally to investigate the cleanability and flux recovery of the membranes. Three effluent samples were chosen for this study based on the dyeing recipe; Light shade, Medium shade and Dark shade. Ultrafiltration (UF) and Nanofiltration (NF) membrane processes were employed to treat the reactive dye bath effluents to recover the salts and water. Investigations were conducted firstly with UF as a pre-treatment to NF. Secondly, evaluations were carried out on the performance of two types of NF membranes (SR90 and NF90) in terms of permeate quality and fluxes for the investigated samples. The effect of cleaning on membrane performance was done. A reusability test was carried out on the permeate samples for dyeing. It was found that the use of UF as a pre-treatment yielded an increase in permeate of 5–25% of the NF fluxes and 90% in organics reduction for all treated samples, hence increasing the water recovery. High rejection of ˃90% by NF90 for COD, TOC and colour were obtained for all the treated samples. SR90 rejection was 80–90% for colour and ˃90% for COD and TOC. Salt recovery for NF90 was 60–90% and for SR90 was 40–50%. The reusability tests carried out showed that permeate recycled from NF90 can be used for any section in the textile industry including the most critical such as dyeing on light shades, while that from SR90 can be used for dyeing dark shades only. It was then concluded that membrane based processes can be integrated into the dye bath of the textile process for the purpose of reuse, thereby saving on the cost of chemicals (salts), reducing fresh water usage and reducing the extent of final effluent treatment.

scholarly journals Membrane condenser as emerging technology for water recovery and gas pre-treatment: current status and perspectives

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Adele Brunetti ◽  
Francesca Macedonio ◽  
Giuseppe Barbieri ◽  
Enrico Drioli
Keyword(s):  
Current Status ◽  
Innovative Technology ◽  
Water Recovery ◽  
Treatment Unit ◽  
Treatment Stage ◽  
Treatment Technologies ◽  
Pre Treatment ◽  
And Control

Abstract The recent roadmap of SPIRE initiative includes the development of “new separation, extraction and pre-treatment technologies” as one of the “key actions” for boosting sustainability, enhancing the availability and quality of existing resources. Membrane condenser is an innovative technology that was recently investigated for the recovery of water vapor for waste gaseous streams, such as flue gas, biogas, cooling tower plumes, etc. Recently, it has been also proposed as pre-treatment unit for the reduction and control of contaminants in waste gaseous streams (SOx and NOx, VOCs, H2S, NH3, siloxanes, halides, particulates, organic pollutants). This perspective article reports recent progresses in the applications of the membrane condenser in the treatment of various gaseous streams for water recovery and contaminant control. After an overview of the operating principle, the membranes used, and the main results achieved, the work also proposes the role of this technology as pre-treatment stage to other separation technologies. The potentialities of the technology are also discussed aspiring to pave the way towards the development of an innovative technology where membrane condenser can cover a key role in redesigning the whole upgrading process.

scholarly journals MULTI CRITERIA SUPPLIER SELECTION USING A HYBRID FUZZY AHP- TAGUCHI TECHNIQUE: THE CASE OF TEXTILE INDUSTRY

2020 ◽  
Vol 8 (2) ◽  
Author(s):  
Wilson Kosasih ◽  
Vieren Yulies Triyani ◽  
Ahmad Ahmad ◽  
Carla Olyvia Doaly
Keyword(s):  
Textile Industry ◽  
Supplier Selection ◽  
Raw Materials ◽  
Fuzzy Ahp ◽  
Research Data ◽  
Taguchi Technique ◽  
Survey Results ◽  
The Cost ◽  
Factual Data

This paper discusses a method that integrates Fuzzy AHP with Taguchi Loss Function. The method used to select suppliers with various criteria. This various criteria will be considered to get the best supplier. This research was conducted at a textile company in Indonesia for the cotton product 41166. The purpose of this research is to apply techniques to improve the performance of Fuzzy AHP by considering the cost of losses as small as possible. Research data obtained from the survey results using questionnaires and company factual data in the form of costs of losses incurred due to improper quantity of raw materials, quality of raw materials that are not in accordance with standards, delays in delivery, prices that exceed expectations, and poor service or response. The results of this research shown the value of losses incurred by 1st, 2nd, 3rd, 4th suppliers respectively for $ 2.23, $ 671.12, $ 815.57, and $ 1243.64. Among four suppliers, the best supplier with the smallest loss value is first supplier.

Membrane Crystallization and Membrane Condenser: Two Membrane Contactor Applications

2020 ◽  
Vol 1 (3) ◽  
Author(s):  
Frappa M ◽  
◽  
Li X ◽  
Drioli E ◽  
Macedonio F ◽  
...  
Keyword(s):  
Membrane Distillation ◽  
Current Status ◽  
Water Recovery ◽  
Membrane Processes ◽  
Gas Streams ◽  
Development Direction ◽  
Salt Crystals ◽  
Industrial Gases ◽  
Pre Treatment ◽  
Application Fields

In recent years different new membrane processes have been designed and developed. In this paper two innovative processes (i.e., membrane condenser and membrane crystallization) will be described and discussed. Membrane crystallization can be used in desalination in combination with membrane distillation and pressure driven membrane processes (such as nanofiltration or reverse osmosis) to achieve high recovery factor combined to salt crystals production.The innovative membrane condenser can be used for the selective recovery of evaporated waste water and contaminants from industrial gases. This process can be also used for pre-treating gas streams that require further separation for the recovery of a defined species (such as pre-treatment of flue gas when used for CO2 capture, biogas for bio methane production, etc.). The current status, the separation principle, the utilized membrane materials and membrane configurations, and the application fields are described and discussed. The future development direction of these two processes is also given. Keywords: Membrane Crystallization; Membrane Condenser; Water recovery; Membrane Technologies;

METHODS OF WATER PURIFICATION AT THE STAGE OF WATER TREATMENT FOR FEEDING BOILERS AND THEIR OWN TECHNOLOGICAL NEEDS AT THE PLANT CHPP

2021 ◽  
Vol 3 (1) ◽  
pp. 099-103
Author(s):  
M. V. Vasina ◽  
◽  
A. S. GOLYSH ◽  
K. V. TROFIMENKO ◽  
◽  
...  
Keyword(s):  
Water Treatment ◽  
Water Purification ◽  
Quantitative Composition ◽  
Source Water ◽  
Initial Water ◽  
Qualitative And Quantitative ◽  
Pre Treatment ◽  
The Cost ◽  
Selection Of

This work consists of the characteristics of production, assessment of the qualitative and quantitative composition of water, consideration of the process of water purification in the chemical shop, comparison and selection of coagulants and flocculants, and demonstration of the most affordable technology used at the CHPP which increases the efficiency of source water purification. The problem of pretreatment of the source water has always been relevant. The quality of the water used depends on the operation of boilers and turbines at the CHPP. The paper presents the average annual indicators of the quality of the source water, pre-treatment methods, and considers which reagents that do not require the cost of reconstruction of clarifiers can improve their performance. The initial water after the application of the test samples of coagulants and flocculants was studied. Conclusions are drawn about the work of clarifiers after the use of the proposed reagents.

Use of fouling resistant nanofiltration and reverse osmosis membranes for dyeing wastewater effluent treatment

2005 ◽  
Vol 51 (6-7) ◽  
pp. 159-164 ◽  
Author(s):  
S.-W. Myung ◽  
I.-H. Choi ◽  
S.-H. Lee ◽  
I.-C. Kim ◽  
K.-H. Lee
Keyword(s):  
Surface Roughness ◽  
Surface Charge ◽  
Reverse Osmosis ◽  
Membrane Fouling ◽  
Water Reuse ◽  
Effluent Treatment ◽  
Poly Vinyl Alcohol ◽  
Dyeing Wastewater ◽  
Pre Treatment

Dyeing wastewater was post-treated by using nanofiltration (NF) and reverse osmosis (RO) membranes. To reduce membrane fouling, poly (vinyl alcohol) (PVA) with a neutral charge was coated on NF and RO membranes. The effect of surface charge and surface roughness on membrane fouling was investigated. Dyeing wastewater was pre-treated by using coagulation, activated sludge process, and MF process to investigate the effect of the pre-treatment on the membrane fouling. It is demonstrated that the extent of fouling is significantly influenced by the surface roughness and the surface charge on the NF and RO membranes. A membrane with a smooth and neutral surface was fouled less. The pre-treatment was essential for avoiding NF and RO membranes fouling. The quality of the final permeate was acceptable for water reuse.

scholarly journals Interaction of Reactive-Dye Chromophores and DEG on Ink-Jet Printing Performance

Molecules ◽  
2020 ◽  
Vol 25 (11) ◽  
pp. 2507 ◽  
Author(s):  
Liyuan Zhang ◽  
Kuanjun Fang ◽  
Hua Zhou
Keyword(s):  
Textile Industry ◽  
Interaction Mechanism ◽  
Reactive Dye ◽  
High Quality ◽  
Ink Jet Printing ◽  
Ink Jet ◽  
Jet Printing ◽  
Reactive Orange ◽  
Dye Solutions

Digital inkjet printing has been widely used in textile industry. The quality of dye solutions and ink-jet droplets limits the ink-jet printing performance, which is very important for obtaining high-quality ink-jet printing images on fabrics. In this paper, we introduced diethylene glycol (DEG) into the dye solutions of Reactive Blue 49 and Reactive Orange 13, respectively, and investigated the interaction between dye chromophores and DEG molecules. Results indicated that the dye chromophores were featured in the aggregation. Adding DEG into the dye solution could effectively disaggregate clusters of reactive dyes, and eliminate satellite ink droplets, thus improving the resolution of the ink-jet printing image on fabrics. Under the same DEG concentration, the disaggregation effect was more obvious in Orange 13 than in Reactive Blue 49. Higher DEG concentration was required in Reactive Orange 13 solution for creating complete and stable ink drops. The surface tension and viscosity of the dye solutions were measured, and printing performance on cotton fabrics was evaluated. The interaction mechanism between dye chromophores and DEG molecules was also investigated. Results from this work are useful for high-quality ink-jet printing images on fabrics.

scholarly journals Investigation of Waste Water Quality Parameters Discharged from Textile Manufacturing Industries of Bangladesh

2018 ◽  
Vol 13 (2) ◽  
pp. 206-214 ◽  
Author(s):  
M. Ahasanur Rabbi ◽  
Jewel Hossen ◽  
Md. Mirja Sarwar ◽  
Pijush Kanti Roy ◽  
Sharmin Binte Shaheed ◽  
...  
Keyword(s):  
Waste Water ◽  
Textile Industry ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Total Suspended Solid ◽  
Environmental Problems ◽  
Effluent Treatment ◽  
Textile Processing ◽  
Textile Manufacturing ◽  
Ph Values

Textile manufacturing sector is the strongest root of the economy of Bangladesh while pollution by inappropriate management of waste water from textile dyeing industries is one of the major environmental problems. Textile processing employs an assortment of chemicals, contingent upon the idea of the crude materials and items. Environmental problems caused by the the textile industry are mainly the discharges of waste water. The wellspring of waste water contamination are the wet handling steps which incorporate measuring, desizing, scouring, bleaching, mercerizing, coloring, printing etc. The present study was aimed at physico-chemical evaluation of waste water discharged by some garments industries. While in some waste water high pH values have been recorded, the pH values of the waste water before and after treatments were found in between the standard range. The Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Dissolved Solid (TDS) and Total Suspended Solid (TSS) values for waste water before treatment were found to be much higher than the permissible limits. For some industries the BOD, COD, TDS and TSS values of the outlet water from effluent treatment plant (ETP) were also found beyond the standard limits.

scholarly journals RSM based Process Modeling and Optimization for Amylase Enzyme Production and its Desizing Potential

2020 ◽  
Vol 9 (7) ◽  
pp. 383-391
Keyword(s):  
Process Modeling ◽  
Textile Industry ◽  
Enzyme Production ◽  
Agitation Speed ◽  
Textile Processing ◽  
Processing Industry ◽  
Amylase Production ◽  
Pre Treatment ◽  
Selection Of

Enzyme technology is extensively touted as the way of the destiny for textile processing industry. Enzymes can be used safely in a wide selection of textile processes such as de-sizing, scouring, bleaching, dyeing, and finishing in textile processing. Recently, amylase enzyme is getting more important in textile industry for removal of starch. Amylase can be successfully applied at early pre-treatment stages, making a sturdy basis for the good finishing of fabrics. The present study was focused to isolate amylase producing bacteria and optimize the growth condition for maximizing amylase production using agro-industrial residues. In addition, immense important for RSM based optimization for the process parameters, pH, temperature, and agitation speed also given. Further, this study concentrated for determination of desizing potency of Denim by the amylase that produced at optimized condition.

Biological aerated filter treated textile washing wastewater for reuse after ozonation pre-treatment

2008 ◽  
Vol 58 (4) ◽  
pp. 919-923 ◽  
Author(s):  
X. J. Wang ◽  
S. L. Chen ◽  
X. Y. Gu ◽  
K. Y. Wang ◽  
Y. Z. Qian
Keyword(s):  
Textile Industry ◽  
Water Reuse ◽  
Oxygen Demand ◽  
Biological Aerated Filter ◽  
Treatment Processes ◽  
Biological Technique ◽  
Pre Treatment ◽  
Washing Wastewater ◽  
Aerated Filter ◽  
The Cost

The combination of chemical and biological treatment processes is a promising technique to reduce refractory organics from wastewater. Ozonation can achieve high color removal, enhance biodegradability, and reduce the chemical oxygen demand (COD). The biological technique can further decrease COD of wastewater after ozonation as a pre-treatment. In this study the ozonizing-biological aerated filter processes were used to treat textile washing wastewater for reuse after conventional treatment. The result showed that when the influent qualities were COD about 80 mg/L, color 16 degree and turbidity about 8 NTU, using the combination processes with the dosages of ozone at 30–45 mg/L with the hydraulic retention time (HRT) of biological aerated filter (BAF) at 3–4 hours respectively, gave effluent qualities of COD less than 30 mg/L, color 2 degree and turbidity less than 1NTU. The cost of treatment was less than one yuan/t wastewater, and these processes could enable high quality washing water reuse in textile industry.

scholarly journals The Environment and Textile Industry-Friendly Hirsute Cotton Variety, Indica

2020 ◽  
Vol 11 (5) ◽  
pp. 451-455
Author(s):  
V. T. Sundaramurthy ◽  
◽  
Sujata Saxena ◽  
Keyword(s):  
Textile Industry ◽  
Reactive Dye ◽  
The Other ◽  
Seed Cotton ◽  
It Use ◽  
Cotton Variety ◽  
Colour Strength ◽  
Textile Industries ◽  
The Village

A short statured variety Indica with open type of canopy that matured in 130 days yielded 2246 kg of seed cotton ha-1 with better quality of fibres than the other popular varieties MCU5, MCU5 VT and Surabhi which recorded 6.50 to 12.15% lesser yield in the village farms with lower quality of fibres than Indica. The bleached fibres of variety Indica were brighter white in colour with lower tinge of yellowness than the other varieties. Upon dyeing with a blue and a red reactive dye to 0.5% shade, the uptake of dyes by Indica was more than the other varieties and it left lesser dye in the dye bath irrespective of the dye. The variety MCU 5VT recorded the lowest dye uptake and left more dye residue in the dye bath as compared to the other varieties. The dyed fibres of Indica were darkest in colour with better colour strength than the other varieties which may save some dye costs for the textile industries since a darker colour can be produced with lesser amount of dye. Since Indica left least residual dye, dye effluent from this variety will cause lesser damage to the environment and soil. It may also help the Textile industries to spend less on treatment of dye effluent as lesser quantity of residual dye is likely to be present in it. Use of this cotton variety may thus reduce the overall dyeing costs and make the garments made out of the fibres of this variety to cost less than the other popular cotton varieties.

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