scholarly journals Nanofibers for textile waste water management

2019 ◽  
Vol 14 (2) ◽  
pp. 297-310 ◽  
Author(s):  
Joginder singh Paneysar ◽  
Snehal Sawant ◽  
Meng Hei Ip ◽  
Sukhwinder kaur Bhullar ◽  
Stephen Barton ◽  
...  
Keyword(s):  
Textile Industry ◽  
Dye Removal ◽  
Dye Adsorption ◽  
Textile Wastewater ◽  
Wastewater Management ◽  
Freundlich Isotherms ◽  
Responsive Polymers ◽  
Dual Responsive ◽  
Ft Ir ◽  
Scavenging Efficiency

Abstract Currently, textile wastewater management focuses on dye removal efficiency and operating costs. Dual responsive polymers are choice materials because they can extract diverse organic compounds from water at their phase transition point. They are copolymers of the acrylamide class, and have been fully characterized by FT-IR, 1H-NMR, DSC, GPC and surface area analysis. Of the five dual responsive polymers, the copolymer of NIPAAM and DMAEMA (CoP-1) offers the best extraction of acidic and basic dyes from wastewater. All copolymers investigated can achieve better than 90% dye removal when used at 4 mg/ml concentration. This dye-scavenging efficiency increases to almost 99% at 3 mg/ml, on conversion of the copolymers to nanofibers in 300 to 500 nm size. Langmuir and Freundlich isotherms were constructed to study the mechanism of dye adsorption. The nanofibers have been shown to be reusable for removal of dyes from water, suggesting that such systems may add benefit to current dye removal methods from textile industry wastewater.

scholarly journals A review on the sustainability of textile industries wastewater with and without treatment methodologies

2018 ◽  
Vol 33 (2) ◽  
pp. 163-203 ◽  
Author(s):  
Punyasloka Pattnaik ◽  
G.S. Dangayach ◽  
Awadhesh Kumar Bhardwaj
Keyword(s):  
Textile Industry ◽  
Global Economy ◽  
Liquid Waste ◽  
Textile Wastewater ◽  
Alternative Methods ◽  
Wastewater Management ◽  
Low Grade ◽  
Efficient Treatment ◽  
Treatment Techniques ◽  
Textile Industries

Abstract The textile industry in India plays a vital role in the economic growth of the nation. The growth of the textile industry not only impacts the economy of a country but also influences the global economy and mutual exchange of technology between the countries. However, the textile industry also generates an enormous quantity of waste as waste sludge, fibers and chemically polluted waters. The chemically polluted textile wastewater degrades the quality of the soil and water when it mixes with these natural resources and its dependent habitats and environment. Owing to the existing problem of solid and liquid waste, textile industries are facing major problems in environment pollution. Therefore, researchers and the textile industries are focusing on the reduction of textile wastewater and the formulation of alternative efficient treatment techniques without hampering the environment. Hence, the present literature survey mainly concentrates on the various wastewater treatment techniques and their advantages. Moreover, the focus of the study was to describe the methods for the reduction of environmental waste and effective utilization of recycled water with zero wastewater management techniques. The alternative methods for the reduction of textile waste are also covered in this investigation. Finally, this paper also suggests utilization of solid wastes after treatment of wastewater in other sectors like construction for the preparation of low-grade tiles and or bricks by replacing the cement normally used in their manufacturing.

scholarly journals Removal of Dye and COD from Textile Wastewater Using AOP (UV/O3, UV/H2O2, O3/H2O2 and UV/H2O2/O3)

2018 ◽  
pp. 621-629 ◽  
Author(s):  
Mehrangiz Pourgholi ◽  
Reza Masoomi Jahandizi ◽  
Mohammadbagher Miranzadeh ◽  
Ommolbanin Hassan Beigi ◽  
Samaneh Dehghan
Keyword(s):  
Textile Industry ◽  
Dye Removal ◽  
Treatment Time ◽  
Reaction Times ◽  
Oxygen Demand ◽  
Advanced Oxidation ◽  
Textile Wastewater ◽  
Time Duration ◽  
Batch System ◽  
Industry Effluent

Introduction: Textile industry effluent is a complex sewage with chemical and color materials that is discharged into the environment and can cause serious problems. In this way using advanced oxidation methods and finding the best methods for removing color materials is necessary. An experimental method was done on Kashan textile industry effluent in laboratory scale and batch system. Material and Methods: Initially, optimal condition was obtained for O3 and H2O2 and followed by advanced oxidation methods (UV/O3, UV/H2O2, O3/H2O2 and UV/H2O2/O3) in different reaction times and pH on dye removal and COD (chemical oxygen demand) were determined. The results were compared with complex repetition method. Results: The results of this research showed that dye removal impact and COD based on the type of process and reaction time in UV/H2O2/O3 by 30 minute time duration, was the most effective method. UV/H2O2 in 10 minute time duration was the least effective method. COD and color removal, based on the process in UV/H2O2/O3 and pH = 6 was the most effective. The effect of UV/H2O2 and pH = 4 was the least efficient method on dye material removing. Results showed that the treatment time was effective on color removing (P < 0/001) statistically. Conclusion: It can be concluded that UV/H2O2/O3 was the most efficient on color removing process, compared to the others, due to co-incidence presence of strongly numerous oxidants and their aggravating effect through producing active hydroxyl radicals (OH˚).

scholarly journals Reactive Blue 203 dye Removal Using Biosorbent: A Study of Isotherms, Kinetics, and Thermodynamics

2018 ◽  
Vol 5 (2) ◽  
pp. 91-99
Author(s):  
Marzieh Bagheri ◽  
Mohammad Nasiri ◽  
Bahareh Bahrami
Keyword(s):  
Activated Carbon ◽  
Dye Removal ◽  
Dye Adsorption ◽  
Industrial Wastes ◽  
Isotherm Models ◽  
Characterization Methods ◽  
Pine Cone ◽  
Adsorption Isotherm Models ◽  
Ft Ir ◽  
Maximum Removal

Nowadays, due to increasing usage of dye in various industries and its destructive effects on health and environment, it is necessary to remove dyes from industrial wastes. Although few studies can be found on using pine cone for removal of different dyes, it has not been used yet to remove Reactive Blue 203 (RB203) dye. The purpose of this study is to investigate RB203 dye adsorption using activated carbon produced from pine cone. Optimal values of influencing factors for RB203 dye removal were obtained. The results showed that the maximum removal was occurred at a pH of 2, temperature of 30˚C, dye concentration of 30 mg/L, adsorbent dosage of 100 mg/L, and contact time of 15 min. The maximum removal percentage was 98.48%. In order to study the synthesized activated carbon, some characterization methods including scanning electron microscopy (SEM), Fourier-transform infrared (FT-IR) spectroscopy and Brunauer-Emmett-Teller (BET) have been used. Investigation of adsorption isotherm models revealed that adsorption of RB203dye can be described through D-R and Temkin isotherm models. Additionally, RB203 dye removal follows the pseudo-firstorder kinetic equation.

scholarly journals Adsorption Characteristics of Banana Peel in the Removal of Dyes from Textile Effluent

Textiles ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 361-375
Author(s):  
Maimuna Akter ◽  
Fahim Bin Abdur Rahman ◽  
M. Zainal Abedin ◽  
S M Fijul Kabir
Keyword(s):  
Textile Industry ◽  
Dye Adsorption ◽  
Textile Wastewater ◽  
Reactive Dye ◽  
Textile Effluent ◽  
Polluted Water ◽  
Banana Peel ◽  
Adsorption Parameters ◽  
Actual Wastewater ◽  
Isotherm And Kinetic Models

Disposal of reactive dye contaminants in surface waters causes serious health risks to the aquatic living bodies and populations adjacent to the polluted water sources. This study investigated the applicability of banana peels to remediate water contamination with reactive dyes used in the textile industry. A set of batch experiments was conducted using a standard dye solution to determine optimum adsorption parameters, and these parameters were used for the removal of dyes from actual wastewater. Fitting experimental data into the isotherm and kinetic models suggested monolayer dye adsorption with chemisorption rate-limiting step. The maximum adsorption found from modeling results was 28.8 mg/g. Fourier transformed infrared (FTIR) spectra revealed the existence of hydroxyl, amine and carboxylic groups, contributing to high adsorption of dye molecules onto the adsorbent surface. About 93% of the dyes from the standard solution were removed at optimum conditions (pH—7.0, initial dye concentration—100 mg/L, contact time—60 min, and adsorbent dose—0.5 g) while this value was 84.2% for industrial textile wastewater. This difference was mainly attributed to the composition difference between the solutions. However, the removal efficiency for actual wastewater is still significant, indicating the high potentiality of banana peel removing dyes from textile effluent. Furthermore, desorption studies showed about 95% of banana peel can be recovered with simple acid-base treatment.

scholarly journals Current status of textile wastewater management practices and effluent characteristics in Tanzania

2021 ◽  
Author(s):  
J. M. Bidu ◽  
B. Van der Bruggen ◽  
M. J. Rwiza ◽  
K. N. Njau
Keyword(s):  
Wastewater Treatment ◽  
Textile Industry ◽  
Management Practices ◽  
Wastewater Treatment Plants ◽  
Textile Wastewater ◽  
Effluent Treatment ◽  
Current Status ◽  
Wastewater Management ◽  
Wet Processing ◽  
Colored Wastewater

Abstract Textile wastewater from wet processing units is a major environmental problem. Most chemicals including dyes are only partly consumed, resulting in highly colored wastewater containing a variety of chemicals released into the environment. This paper gives information on the current management of textile wastewater in Tanzania. A semiquantitative analysis was done to identify the main types of chemicals used in wet processing units, wastewater characteristics and existing wastewater treatment methods in the textile industry. The performance evaluation of the existing wastewater treatment plants is also discussed. The advantages of integrating constructed wetlands with the existing treatment facilities for textile wastewater are explained. It has been observed that pretreatment and dying/printing of the fabrics are the main two processes that produce wastewater in many textile companies. Main pollutants are chemicals used from pretreatment and materials removed from de-sizing, bleaching and scouring processes. Dyes, printing pigments and dye auxiliaries are the main pollutants from the dyeing/printing process. Most of the textile companies in Tanzania are equipped with effluent treatment plants. Wastewater treatment plants have basically similar units, which are coagulation-flocculation, sedimentation through clarifiers and aerobic reactor. However, their effluents do not meet discharge limits stipulated by the Tanzania Bureau of Standards (TBS).

Removal of Dyes from the Textile Industry by Adsorption in Fixed Bed Columns: A Sustainable Process

2009 ◽  
Vol 4 (4) ◽  
Author(s):  
Andressa Regina Vasques ◽  
Selene Maria Arruda Guelli Ulson de Souza ◽  
José Alexandre Borges Valle ◽  
Antônio Augusto Ulson de Souza
Keyword(s):  
Textile Industry ◽  
Fixed Bed ◽  
Dye Adsorption ◽  
Textile Wastewater ◽  
Reactive Dye ◽  
Breakthrough Curves ◽  
Maximum Adsorption Capacity ◽  
Fixed Bed Adsorption ◽  
Different Temperatures ◽  
Textile Wastewater Treatment

The capacity and mechanism of mono and bi-functional reactive dye adsorption utilizing a new adsorbent obtained from the dried residual sludge (~10% w.w.) of a textile wastewater treatment system was studied. With the focus on determining the efficiency of the adsorbent in the dye removal, the adsorption isotherms were determined for the reactive dyes RR2 and RR141, at different temperatures and salt concentrations. The experiments were carried out in fixed bed adsorption columns, which were defined as the best adsorption experimental condition for both of the dyes through the parameter qm (mg/g), obtained by the adjustment of Langmuir isotherms. Breakthrough curves for the dyes RR2 and RR141 were obtained varying the height to which the fixed bed columns were packed with adsorbent (15, 30 and 45 cm) and varying the adsorbate feed rate in the column (8, 12 and 16 ml/min). For the dye RR2 the maximum adsorption capacity was 53.48 mg/g and for the dye RR141 it was 78.74 mg/g.

scholarly journals Kinetics of COD and Dye Removal for Waste Water from Textile Industry

2021 ◽  
Vol 9 (9) ◽  
pp. 237-244
Author(s):  
Heena Rani Bindala
Keyword(s):  
Waste Water ◽  
Water Pollution ◽  
Activated Carbon ◽  
Textile Industry ◽  
Dye Removal ◽  
Textile Wastewater ◽  
Electrochemical Treatment ◽  
Efficient Treatment ◽  
Treatment Technologies ◽  
Kinetics Of

Abstract: Water pollution poses serious threats to both the environment and the organisms that depend on their environment for survival. Due to the toxicity from dyes in textile wastewater, there is a dire need for the development of innovative and efficient treatment technologies. In this study treatability studies, using a electrochemical treatment (ECT) method followed by activated carbon (AC) based adsorption. ECT method was studied extensively for the treatment of reactive black dye. Moreover, to understand the practical applicability of ECTs, the findings were optimized for treatment of synthetic textile wastewater (STW).

Investigation of dye removal from textile wastewater by means of response surface method

2020 ◽  
Vol 31 (08) ◽  
pp. 2050114
Author(s):  
Ahmad Shafee ◽  
P. Valipour ◽  
Aurang Zaib ◽  
Houman Babazadeh
Keyword(s):  
Response Surface ◽  
Response Surface Method ◽  
Dye Removal ◽  
Dye Adsorption ◽  
Textile Wastewater ◽  
Independent Variables ◽  
Surface Method ◽  
Model Equations ◽  
Alkali Activated ◽  
Dyes Removal

The main purpose of this article is to apply response surface method to analyze the residual dyes removal independent variables from the experimental data for dye adsorption onto alkali-activated sand as natural adsorbent from textile wastewater. The independent variables are contact time (3–30[Formula: see text]min) and adsorbent dosage (12.5–100[Formula: see text]g) and the dependent variables are percentage of dye removal and dye adsorbed amount per alkali-activated sand as responses. The effect of the variables, their interaction with each other, the fitted model equations, the adequacy and desirability of the model was evaluated by RSM. Response surface method to analyze the residual dyes removal, which resulted in about 70% dye removal and 30 [Formula: see text][Formula: see text]mg/g dye adsorbed, with 0.983 of desirability for fitted model. Finally, the initial dye concentration effect was investigated.

scholarly journals The Removal of Terasil Navy Blue Dye from Al-Kut Textile Wastewater Using Membrance Technologies

2018 ◽  
Vol 7 (4.20) ◽  
pp. 557 ◽  
Author(s):  
Hatem Asal Gzar ◽  
Zahraa Khalid shhaieb
Keyword(s):  
Textile Industry ◽  
Dye Removal ◽  
Textile Wastewater ◽  
Disperse Dyes ◽  
Blue Dye ◽  
Operating Pressure ◽  
Permeate Flux ◽  
Positive Effects ◽  
The Common ◽  
Feed Temperature

The current work was devoted to study the operating feasibility using membranes which were manufactured locally, two membrance types were tested nanofiltration (NF) and ultrafiltration (UF) membrane to treat the effluent of Al-kut textile industry. Based on the usage rate in Iraq textile industries, terasil navy blue (TNB) is one of the common disperse dyes discharged in effluent wastewater. Therefore this type of dyes was selected to experience in this study. Parameters such as effects of TNB concentration, feed temperature and operating pressure and its effect on permeate flux noticed and the TNB rejection were investigated. The results show that when using NF system at pressure of 10 bar and when the temperature increased from 25ºC to 37ºC, it was found that an increase in permeate flux from 46.97 to 50 LMH.  However, in UF system permeate flux was increased from 41.32 to 45.04 LMH.  While dye removal was decline in NF membrane from 96.00 to 95.14 and for UF from 79.50 to 78.67 when the temperature raised from 25ºC to 37ºC.The pressure state positive effects on dye removal for both membranes, it show that NF membrane is better in treatment than UF membrane.  

scholarly journals Integrated Membrane–Electrocoagulation System for Removal of Celestine Blue Dyes in Wastewater

Membranes ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 184
Author(s):  
Muhammad Syaamil Saad ◽  
Lila Balasubramaniam ◽  
Mohd Dzul Hakim Wirzal ◽  
Nur Syakinah Abd Halim ◽  
Muhammad Roil Bilad ◽  
...  
Keyword(s):  
Textile Industry ◽  
Membrane Filtration ◽  
Dye Removal ◽  
Textile Wastewater ◽  
Membrane System ◽  
Electrolytic Cell ◽  
Integrated System ◽  
Superior Performance ◽  
Blue Dye ◽  
Celestine Blue

The textile industry provides for the needs of people especially in apparel and household items. The industry also discharges dye-containing wastewater that is typically challenging to treat. Despite the application of the biological and chemical treatments for the treatment of textile wastewater, these methods have their own drawbacks such as non-environment friendly, high cost and energy intensive. This research investigates the efficiency of the celestine blue dye removal from simulated textile wastewater by electrocoagulation (EC) method using iron (Fe) electrodes through an electrolytic cell, integrated with nylon 6,6 nanofiber (NF) membrane filtration for the separation of the flocculants from aqueous water. Based on the results, the integrated system achieves a high dye removal efficiency of 79.4%, by using 1000 ppm of sodium chloride as the electrolyte and 2 V of voltage at a constant pH of 7 and 10 ppm celestine blue dye solution, compared to the standalone EC method in which only 43.2% removal was achieved. Atomic absorption spectroscopy analysis was used to identify the traces of iron in the residual EC solution confirming the absence of iron. The EC-integrated membrane system thus shows superior performance compared to the conventional method whereby an additional 10–30% of dye was removed at 1 V and 2 V using similar energy consumptions.

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