Academic literature on the topic 'Treated textile effluents'
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Journal articles on the topic "Treated textile effluents"
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Wijeyaratne, W. M. Dimuthu Nilmini, and P. G. Minola Udayangani Wickramasinghe. "Chromosomal Abnormalities in Allium cepa Induced by Treated Textile Effluents: Spatial and Temporal Variations." Journal of Toxicology 2020 (August 3, 2020): 1–10. http://dx.doi.org/10.1155/2020/8814196.
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Appropriate effluent treatment processes are expected to significantly reduce the toxicity of effluents before they are released to the natural environment. The present study was aimed to assess the spatial and temporal variations of the physical and chemical water quality parameters of a natural water body receiving treated textile effluents and to assess the chromosomal abnormalities induced by the treated textile effluents. Four sampling sites (A: effluent discharge point; B: 100 m downstream from site A along the tributary; C: 200 m downstream from site A along the tributary; D: 100 m upstream from site A along the tributary) were selected associated to a tributary that received treated textile effluent. The physical and chemical water quality parameters were measured in the composite water samples collected from the study sites, and Allium cepa bioassay was conducted using aged tap water as the control. Sampling was conducted in both rainy and dry seasons. The conductivity, TDS, COD, and colour intensity of the water samples collected from the study sites were significantly higher during the dry season compared to those in the rainy season. Allium cepa root meristematic cells exposed to water samples from sites A, B, and C showed a significantly high interphase and prophase indices compared to those exposed to aged tap water and upstream site during both rainy and dry seasons. The mitotic index of the root tip cells of Allium cepa bulbs exposed to the water samples collected from the effluent discharge point (site A) and from the 100 m downstream site from site A (site B) was significantly lower than that of the other sites in both rainy and dry seasons. However, the mitotic index of the root tip cells of Allium cepa bulbs exposed to the water samples from the upstream site was not significantly different from that of the control treatment during both sampling seasons. The bioassay indicated that the mitotic index and phase index of the root meristematic cells of Allium cepa can be affected by the treated textile effluents released to the water body and the occurrence of C metaphase, chromosomal adherence, bridges, disturbed anaphase, vagrant chromosomes, and chromosomal breaks indicated that the treated textile effluent receiving tributary can possibly contain genotoxic and mutagenic compounds which can induce chromosomal abnormalities.
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GIRI, SHAKUNTALA, and R. P. SINGH. "Impact of Textile Industry Effluent on Chlorophyll and Nutrient Content in Tomato." YMER Digital 21, no. 08 (August 19, 2022): 793–800. http://dx.doi.org/10.37896/ymer21.08/66.
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The components generally present in textile industry effluents cause damage to water bodies, when untreated effluents are discharged into it. The aim of the present study is to observe impact of textile industry effluent on chlorophyll and nutrient content in tomato. Effluent of textile industry was procured from district Bhadohi and used in this study. A pot experiment was conducted adopting Completely Randomized Design with five treatments and three replications in the natural open weather conditions for 60 days during the plant season. Five concentrations viz; 0%, 25%, 50%, 75% and 100% were used for present experiment. Zero per cent concentration was treated as control. Observations related to chlorophyll and nutrient content (carbohydrate, nitrogen and protein) were recorded at different days after transplanting. Results indicate that chlorophyll and nutrient content gradually decreased with increase in effluent concentrations and the maximum amount was found at 0% concentration level whereas minimum was with 100% concentration. Keywords: Textile effluent, Tomato, Chlorophyll, Carbohydrate, Nitrogen and Protein content
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Casimiro, S., and M. L. Fidalgo. "Performance of the freshwater shrimp <i>Atyaephyra desmarestii</i> as indicator of stress imposed by textile effluents." Web Ecology 7, no. 1 (April 21, 2007): 35–39. http://dx.doi.org/10.5194/we-7-35-2007.
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Abstract. Textile plants consume large volumes of water and produce a great amount of wastewaters, which can be important sources of toxic discharges in receiving environments. The objective of this study was to evaluate the acute toxicity of textile effluents on the freshwater shrimp A. desmarestii. A whole effluent toxicity test procedure was used to determine the aggregate toxicity of three samples taken before and after wastewater treatment in a textile mill. The following LC50 − 48 h values (%, v/v) were calculated: Untreated effluent −29% effluent (sample 1), 22% effluent (sample 2), and 47% (sample 3); Treated effluent −73% effluent (sample 1), 74% effluent (sample 2), and > 100% (sample 3). Based upon acute toxicity units (TUa = 100/LC50), untreated effluent varied from toxic in samples 1 and 3 (2.00 ≤ TUa ≤ 4.00) to very toxic in sample 2 (TUa > 4.0), whereas treated effluent varied from no toxic in sample 3 to moderately toxic in samples 1 and 2 (1.33 ≤ TUa ≤ 1.99). Despite some limitations and constraints related to innate variability of industrial effluents, our results suggested that A. desmarestii can be a promising and potential test organism for assessing toxicity of complex chemical mixtures.
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Gupta, Poonam, Monika Asthana, Avnish Kumar, and Siddhartha Barun. "Physicochemical Analysis and Microbial Diversity of Yamuna Water and Industrial Effluents." International Journal of Applied Sciences and Biotechnology 2, no. 2 (June 25, 2014): 199–205. http://dx.doi.org/10.3126/ijasbt.v2i2.10352.
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Pollution has arisen as a serious environmental concern to the present world after industrialization of human societies. It has severely affected our air, soil and water sources. Looking to its global, national, regional and local dimensions, it is now imperative to check it at each and every level. In the present study, 8 samples (3 Yamuna water samples, 3 tannery effluent samples and 2 textile effluent samples), were collected from different sites of Yamuna and exit points of textile and tannery Industries. Water and effluent samples were analysed for various physicochemical parameters (pH, TDS, hardness, chloride and BOD) using conventional methods. Afterwards these samples were utilized for isolation of the native bacterial species. All the samples were showing higher than the standard values for TDS (500mg/l), hardness (80-100 mg/l), chloride (250mg/l) and BOD (30mg/l). It was observed that the tannery effluents were showing maximum TDS values(1190-1240mg/l), followed by textile effluents (1190 and 1210mg/l) and Yamuna water (530-1180mg/l).Similarly, in case of chloride content, highest concentration range(828.8-1598mg/l)was shown by tannery effluents. pH value was nearly neutral for Yamuna water, slightly acidic in case of textile effluents and more acidic for tannery samples. Highest range of hardness values were observed for the tannery effluents (860-880mg/l) followed by textile effluents (760 and 860mg/l). The BOD values were nearly similar for all the samples with maximum values being observed for tannery effluents (42-48 mg/l). Thus it can be inferred that all the samples were highly polluted and need to be treated by suitable methods. There were 11 cultures purified, that could be employed in bioremediation purposes.DOI: http://dx.doi.org/10.3126/ijasbt.v2i2.10352Int J Appl Sci Biotechnol, Vol. 2(2): 199-205
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Hu, Shang, and Chiu. "Removal of Reactive Dyes in Textile Effluents by Catalytic Ozonation Pursuing on-Site Effluent Recycling." Molecules 24, no. 15 (July 29, 2019): 2755. http://dx.doi.org/10.3390/molecules24152755.
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The textile wash-off process consumes substantial amounts of water, which generates large volumes of wastewater that pose potential pollution issues for the environment. In the present study, catalytic ozonation was applied to degrade residual dyes present in rinsing effluents from wash-off processes towards the aim of recycling the waste effluents. A magnetic catalyst was prepared for promoting dye degradation by catalytic ozonation. Via a hydrothermal reaction, highly magnetic manganese ferrite (MnFe2O4) particles were successfully loaded on carbon aerogel (CA) materials (MnFe2O4@CA). The results showed that the developed catalyst strikingly promoted the degradation of dye contaminants by catalytic ozonation, in terms of color removal and reduction of chemical oxidation demand (COD) in rinsing effluents. COD removal efficiency in catalytic ozonation was enhanced by 25% when compared with that achieved by ozonation alone under the same treatment conditions. Moreover, we confirmed that after catalytic ozonation, the rinsing effluents could be recycled to replace fresh water without any evident compromise in the color quality of fabrics. The color difference (ΔEcmc(2:1)) between fabrics treated with recycled effluents and water was not more than 1.0, suggesting that the fabrics treated with recycled effluents displayed acceptable color reproducibility. Although colorfastness and color evenness of fabrics treated with recycled effluents were slightly poorer than those of fabrics treated with water, they were still within the acceptable tolerance. Therefore, the present study validated that catalytic ozonation was a promising technology for saving water and wastewater elimination in textile dyeing. It provides a feasibility assessment of catalytic ozonation for recycling waste effluents to reduce water dependence in textile production. Furthermore, we show a new perspective in on-site recycling waste effluents by catalytic ozonation and enrich the knowledge on feasible approaches for water management in textile production.
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Sayed, Md Abu, and M. G. Mostaf. "Characterization of Textile Dyeing Effluent and Removal Efficiency Assessment of Al2(SO4)3 Coagulant." Asian Journal of Applied Science and Technology 07, no. 03 (2023): 195–212. http://dx.doi.org/10.38177/ajast.2023.7314.
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The textile dyeing industry discharges a variety of effluents into nearby surface water bodies, which pose a threat to the environment. The study aimed to characterize the effluents and evaluate the coagulant efficiency of Al2(SO4)3 for the treatment of textile effluent. This investigation deals with studying the parameters affecting coagulation-flocculation (C-F) behavior, such as coagulant dose, reaction time, pH, and temperature, using a jar test apparatus. The analyzed parameters before and after treatment are pH, dissolved oxygen (DO), electrical conductivity (EC), total suspended solids (TSS), total dissolved solids (TDS), chemical oxygen demand (COD), biological oxygen demand (BOD), and some anions. The analysis results showed that the textile dyeing effluent was highly alkaline, and parameters like EC, TSS, TDS, COD, BOD, and some anions were found to be higher than the DoE-BD standard guidelines for effluent discharge, indicating that the effluents are loaded with high amounts of organic and inorganic pollutants. The study optimized the process parameters of the coagulation The study optimized the process parameters of the coagulation, which illustrated that the Al2(SO4)3 coagulant potentially reduced pH, EC, TDS, TSS, BOD, and COD from the effluents. The study observed that the highest removal of COD and BOD was 66% and 74% for the samples Ef2 and Ef3, respectively. The highest TSS removal rate was around 90% for Ef3, and almost 80% TDS removal was achieved for all effluents. The results indicated that Al2(SO4)3 showed a better coagulant efficiency for reducing the concentration of several physicochemical parameters in wastewater, and the treated effluent satisfied the DoE-BD standards for discharging wastewater into the public sewage network. Hence, Al2(SO4)3 would be a potential coagulant for treating the textile effluents that help to build a sustainable environment.
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Campos, Marcelo, Sajjad Hussain, Hammad Khan, Amanda Silveira De França, Fábio Veríssimo Gonçalves, Keila Roberta Ferreira De Oliveira, Jhonatan Barbosa Da Silva, and Carlos Nobuyoshi Ide. "Electro-oxidation: An Effective Alternative for the Degradation of Textile Dyes and Reduction of Toxicity in Industrial Effluents." Revista de Gestão Social e Ambiental 17, no. 6 (July 18, 2023): e03429. http://dx.doi.org/10.24857/rgsa.v17n6-030.
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Purpose: This study aims to evaluate the efficiency of electro-oxidation as a treatment option for textile effluents containing industrial dyes, with the goal of minimizing their environmental impact. Theoretical framework: The textile industry is known for its high water demand and generation of effluents containing dyes, posing an environmental challenge. Electro-oxidation is a promising technology for the degradation of pollutants that are difficult to mineralize. Method: The treatment process and operational conditions were described, utilizing a Boron-Doped Diamond (BDD) electrode. Three ranges of electric current (6, 12, and 18 mA cm-2) were tested to degrade the Procion Yellow (PY) dye. The removal of the dye, energy consumption, reduction in Chemical Oxygen Demand (COD), Total Organic Carbon (TOC), and effluent toxicity were evaluated. Results and conclusion: The treatment resulted in the removal of 91.4% of the dye, with an energy consumption of 88.4 kWh/m³ for a concentration of 150 mg/L of PY, following a first-order kinetics. Significant reductions in COD (74%) and TOC (85.2%) were observed. The effluent toxicity decreased at currents of 6 and 12 mA cm-2 but increased at 18 mA cm-2. Electro-oxidation proved to be a promising option for treating textile effluents containing industrial dyes. Research implications: The results contribute to the advancement of science and socio-environmental management practices in the textile industry, providing a viable option for effluent treatment and reduction of environmental impact. Originality/value: This study highlights the efficiency of electro-oxidation in the degradation of industrial dyes present in textile effluents, presenting relevant results on dye removal, energy consumption, COD and TOC reduction, as well as the evaluation of treated effluent toxicity.
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Krull, R., and E. Döpkens. "Recycling of dyehouse effluents by biological and chemical treatment." Water Science and Technology 49, no. 4 (February 1, 2004): 311–17. http://dx.doi.org/10.2166/wst.2004.0293.
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Dedicated to Professor Dr.-Ing. Dietmar C. Hempel on the occasion of his 60th birthday. A combined biological and chemical process of purification and recycling of residual dyehouse effluents was developed, investigated and installed at a textile finishing company which produces 330,000 m3 colored wastewater effluents per year. The process divided effluent into two streams. Both streams were subjected to anaerobic dye-cleavage, aerobic mineralization of cleavage-products and biomass separation. One stream was also membrane filtered and treated with ozone, which made possible the recycling of 60% of the total discharge. By these means it was possible to increase the quality of the treated streams for recycling purposes, as well as the dye capacity of the textile mill, and to minimize the operating costs. Furthermore, the municipal wastewater treatment plant into which the textile finishing mill's water is discharged, did not need to enhance its capacity.
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Renita, A. Annam, S. Sai Bhargav, and Evin Joy. "Advanced Oxidation Process by Electro-Fenton Reagent." Advanced Materials Research 984-985 (July 2014): 159–63. http://dx.doi.org/10.4028/www.scientific.net/amr.984-985.159.
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This paper deals with the advanced oxidation using Electro-fenton reagent for the degradation of azo-dyes in textile effluents. Discharge of textile effluents causes inevitable pollution of water resources which calls for further treatment methods. In this experiment, textile effluent samples were treated with iron electrodes with the reagents, hydrogen peroxide and ferrous sulfate .The acid dye effluents which were used in this study are Acid Orange 7, Acid Red 88, and Acid Violet 7. The temperature was set to 40° C. Samples of 20 ml were analyzed for Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD) and Colour reduction. Experiments were carried out at voltage variations of 2, 4, 6 and 8 volts. From the results, COD and Colour were observed to be reduced drastically from respective original values before treatment with Fenton’s reagent using electro-chemical method.Keywords--- Advanced oxidation, Electro-fenton, BOD, COD, Colour reduction
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Selim, Mohamed T., Salem S. Salem, Asem A. Mohamed, Mamdouh S. El-Gamal, Mohamed F. Awad, and Amr Fouda. "Biological Treatment of Real Textile Effluent Using Aspergillus flavus and Fusarium oxysporium and Their Consortium along with the Evaluation of Their Phytotoxicity." Journal of Fungi 7, no. 3 (March 9, 2021): 193. http://dx.doi.org/10.3390/jof7030193.
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Twenty-one fungal strains were isolated from dye-contaminated soil; out of them, two fungal strains A2 and G2-1 showed the highest decolorization capacity for real textile effluent and were, hence, identified as Aspergillus flavus and Fusarium oxysporium based on morphological and molecular methods. The highest decolorization percentage of 78.12 ± 2.1% was attained in the biotreatment with fungal consortium followed by A. flavus and F. oxysporium separately with removal percentages of 54.68 ± 1.2% and 52.41 ± 1.0%, respectively. Additionally, ultraviolet-visible spectroscopy of the treated effluent showed that a maximum peak (λmax) of 415 nm was reduced as compared with the control. The indicators of wastewater treatment efficacy, namely total dissolved solids, total suspended solids, conductivity, biological oxygen demand, and chemical oxygen demand with removal percentages of 78.2, 78.4, 58.2, 78.1, and 77.6%, respectively, demonstrated a considerable decrease in values due to fungal consortium treatment. The reduction in peak and mass area along with the appearance of new peaks in GC-MS confirms a successful biodegradation process. The toxicity of treated textile effluents on the seed germination of Vicia faba was decreased as compared with the control. The shoot length after irrigation with effluents treated by the fungal consortium was 15.12 ± 1.01 cm as compared with that treated by tap-water, which was 17.8 ± 0.7 cm. Finally, we recommended the decrease of excessive uses of synthetic dyes and utilized biological approaches for the treatment of real textile effluents to reuse in irrigation of uneaten plants especially with water scarcity worldwide.
Dissertations / Theses on the topic "Treated textile effluents"
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Mzahma, Sourour. "Impact sur des sols agricoles et des plantes de l'irrigation par des effluents textiles traités." Electronic Thesis or Diss., Strasbourg, 2024. http://www.theses.fr/2024STRAH001.
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L’industrie textile est la plus polluante de tous les secteurs industriels. Ce secteur n’est seulement pas un grand consommateur d’eaux mais rejette aussi d’énormes quantités d’eaux usées chargées en sels, colorants, détergents, métaux lourds, matières organiques dégradables, des agents stabilisants, etc. Le rejet de ces eaux présente des risques pour les hydroécosystèmes, le sol et les plantes. En plus des effets néfastes des effluents textiles non traités sur l’environnement, s’ajoute le problème de la pénurie d’eau qui s’aggrave de plus en plus, la forte demande en eau dans le secteur agricole et le manque de fourrage dans certains pays dans le monde tel que la Tunisie. Dans ce sens, plusieurs procédés ont été développés pour traiter les effluents textiles à savoir l’oxydation chimique, la coagulation chimique, la biodégradation, l’adsorption et les procédés membranaires. Cependant, peu d'études se sont intéressées à l'impact de l'irrigation avec ces effluents traités sur les sols et les végétaux.L’objectif de cette thèse est la réutilisation des effluents textiles traités (ETT) en mettant en évidence des scénarios de valorisation agricole de ces effluents. Le travail consiste à soumettre les effluents secondaires (TB) d’une usine textile Tunisienne à des traitements supplémentaires par ultrafiltration (UF), nanofiltration (NF) et osmose inverse (OI). Etant donnée que les effluents de TB sont caractérisés par une salinité élevée, un scénario de couplage a été envisagé en mélangeant 50/50 (V : V) les eaux de traitement biologique (TB) avec les eaux de puits (S) (TB/S) et les eaux de NF (TB/NF). L'impact de l'irrigation avec ces eaux sur les paramètres physico-chimiques et biologiques d’un sol local et sur la croissance, la composition minérale et l’absorption des ETM chez une plante fourragère : Sesbania bispinosa a été évalué. Une caractérisation physico-chimique des eaux d’irrigation a été réalisée, ainsi qu’une évaluation du potentiel génotoxique des sols irrigués par les ETT.Les résultats indiquent que la qualité des ETT n’est pas stable dans le temps et varie en fonction des procédés de production. Le TB ne répond pas aux exigences de la norme NT 106.03 relative à la réutilisation des eaux usées en agriculture. Ces eaux sont caractérisées par un pH, CE et des teneurs en Na+, Cl- et SO42- élevées. Bien que les membranes NF et OI réduisent efficacement la salinité et les teneurs en ces éléments, et ne présentent pas de risque sur le sol et les plantes avec l’absence de pouvoir génotoxique des sols sur les plantes, ces techniques produisent des rejets hydriques plus concentrés. Par conséquent, le couplage des eaux de TB avec les eaux de puits constitue la meilleure alternative pour une valorisation agricole. Ce couplage a permis d’alléger la salinité des eaux de TB en réduisant les teneurs en éléments chimiques tel que Na+, Cl- et SO42-. La réutilisation de ces eaux a des fins agricoles n’a pas montré d’effets négatifs sur la croissance et la nutrition minérale de S.bispinosa, n’a pas présenté de risques sur la qualité physico-chimique du sol et a contribué à une amélioration de l’activité enzymatique dans le sol.Le couplage des eaux constitue donc une option de valorisation. C’est une solution simple et peu coûteuse qui, d’une part, aide à pallier le manque d’eau et, d’autre part, réduit les quantités d’eau rejetées dans l’environnement par les industries textilesThe textile industry is the most polluting of all industrial sectors. This sector is not only a large consumer of water, but it also discharges enormous quantities of wastewater loaded with salts, dyes, detergents, heavy metals, degradable organic materials, stabilizing agents, etc. The discharge of this water presents risks for hydro-ecosystems, soil, and plants. In addition to the harmful effects of untreated textile effluent on the environment, there is the problem of water scarcity which is becoming increasingly serious. the high demand for water in the agricultural sector, and the lack of fodder in some countries around the world such as Tunisia. In this sense, several processes have been developed to treat textile effluents such as chemical oxidation, chemical coagulation, biodegradation, adsorption, and membrane processes. However, few studies have focused on the impact of irrigation with these treated effluents on soils and plants.The objective of this thesis is the reuse of treated textile effluent (TTE) using scenarios of agricultural valorization of these waters. This work consists of submitting biological treatment (TB) effluents from a Tunisian textile factory to additional treatments by ultrafiltration (UF), nanofiltration (NF), and reverse osmosis (RO). Given that TB effluents are characterized by high salinity, a coupling scenario was considered by mixing 50/50 (V: V) biological treatment water (TB) with well water (S) (TB/S) and NF waters (TB/NF). The impact of irrigation with these waters on the physicochemical and biological parameters of the soil and on the growth, mineral composition, and absorption of MTE in a forage plant: Sesbania bispinosa was evaluated. A physicochemical characterization of irrigation water was carried out with an evaluation of the genotoxic potential of soils irrigated by TTE.The results indicate that the quality of TTE is not stable over time and varies according to the production processes. TB does not meet the requirements of the NT 106.03 standard relating to the reuse of wastewater in agriculture. These waters are characterized by high pH, EC, and Na+, Cl- and SO42- contents. Although NF and RO membranes effectively reduce salinity and the contents of these elements and do not present any risk to the soil and plants with the absence of genotoxic effect of soils on plants, these techniques produce more concentrated water discharges. Consequently, the coupling of TB water with well water constitutes the best alternative for agricultural valorization. This coupling made it possible to reduce the salinity of TB water by reducing the contents of chemical elements such as Na+, Cl-, and SO42-. The reuse of this water for agricultural purposes did not show negative effects on the growth and mineral nutrition of S.bispinosa, did not present risks on the physico-chemical quality of the soil, and contributed to an improvement in enzymatic activity in the soil. Therefore, water coupling constitutes a valorization option. It is a simple and inexpensive solution which, on the one hand, makes it possible to overcome the lack of water and, on the other hand, reduces the quantities of water released into the environment by the textile industries
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Depgni, Flash Colombe Tchono. "Reuse of a treated textile effluent from cobalt oxide and sulphate radical-based advanced oxidation process." Thesis, Cape Peninsula University of Technology, 2020. http://hdl.handle.net/20.500.11838/3101.
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Thesis (MEng (Chemical Engineering))--Cape Peninsula University of Technology, 2020Reactive dye waste effluents are the most difficult to treat, as they are highly polluted due to the structure of the dyestuffs and chemicals used during the dyeing process. Due to the water shortage and environmental pollution, textile industries are encouraged to treat the waste effluent produced during dyeing processes so as to facilitate its reuse, as this will contribute to mitigating environmental pollution and minimise water consumption. However, relatively few of the treatment technologies employed for the treatment of textile wastewater are applicable for water that is intended for reuse. Many treatment technologies exist for the treatment of textile waste effluents, but are either limited in efficiency or high in operating and energy cost. Chemical treatment methods such as the cobalt oxide mediated sulphate radical-based advanced oxidation process (CO-SR-AOP) shows promise but have not yet been evaluated for the reuse of textile wastewater in the dyeing process. The purpose of this work is to study the reusability of a treated reactive dye effluent obtained from dyeing cotton fabrics using peroxymonosulfate (PMS) activated by a cobalt oxide (Co3O4) catalyst and using a laboratory-scale continuous wastewater treatment reactor. In order to achieve this, a cobalt oxide catalyst was hydrothermally synthesised, cotton fabrics were bleached as pre-treatment prior to being dyed using blue reactive dye and tap water to produce the necessary textile waste effluent. The produced waste effluent was treated with Oxone (PMS) and a cobalt oxide catalyst; then reused in the next dyeing process, using an identical dyeing recipe. The pH of the treated effluent was corrected to neutral before its reuse. The waste effluent from the first cycle of dyeing was treated before its next reuse. This process was carried out for a maximum of three cycles. The dyed fabrics obtained using the treated effluent were compared with the ones dyed with tap water in terms of colour fastness. The optimisation of the reusability of a treated effluent from cobalt oxide and sulphate radical-based advanced oxidation process was carried out using Design-Expert software version 11.1.2.0 using a Box-Behnken design taken from response surface methodology. The effects of three factors were studied: Oxone level, dye concentration and reuse cycles at low, high and medium levels in fifteen experimental runs. Colour fastness of the dyed fabrics was studied as the response of the trials. Based on the preliminary results, the treated effluent can be reused in two successive reuse cycles without altering the fabric’s quality. To obtain more or less 80% colour removal, waste effluent with 3% dye concentration must be obtained and treated with a high dosage of Oxone (3.5 g/l). Salt can be recovered by using this process, but with a darker shade of dyed fabric as a result, when compared with the reference. Varying dilution factors and standing times of the treated effluent were investigated but did not have significant influence on the colour quality of the dyed fabrics. A useful model was found to predict the colour fastness of dyed fabrics with an effluent treated with the continuous wastewater treatment reactor system using PMS activated by Co 3 O 4 . The study of the interaction effects of all three parameters led to the finding that to obtain good colour fastness grading of the dyed fabrics, the treated effluent can be reused a maximum of two iterations, with a dye concentration of 5% and an Oxone concentration of 1 g/L. The predicted optimum process conditions for this process were 1.3 g/l of Oxone used to treat a waste effluent with 4.4% dye concentration and reuse in a maximum of three reuse cycles.
Book chapters on the topic "Treated textile effluents"
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Karthikeyan, S., and R. I. Sathya. "Shade Improvement in Textiles Through Use of Water From RO-Treated Dye Effluent." In Lecture Notes in Mechanical Engineering, 561–68. India: Springer India, 2012. http://dx.doi.org/10.1007/978-81-322-1007-8_51.
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Karuppuswamy, Chandrasekaran, and Kandhavadivu Palanisamy. "A Critical Analysis of the Characteristics of Raw and Treated Effluents Generated from Natural/Ayurvedic Dyeing Unit." In Sustainable Textiles: Production, Processing, Manufacturing & Chemistry, 29–45. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-35451-9_2.
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Fatima, Tatheer, Tanzeela Fazal, and Nusrat Shaheen. "Electro-Peroxone and Photoelectro-Peroxone Hybrid Approaches: An Emerging Paradigm for Wastewater Treatment." In Wastewater Treatment [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.102921.
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Electrochemical advanced oxidation practices (EAOPs), remarkably, electro-peroxone (EP), photoelectro-peroxone (PEP), and complementary hybrid EP approaches, are emerging technologies on accountability of complete disintegration and elimination of wide spectrum of model pollutants predominantly biodegradable, recalcitrant, and persistent organic pollutants by engendering powerful oxidants in wastewater. A concise mechanism of EP and PEP approaches along with their contribution to free radical formation are scrutinized. Furthermore, this chapter provides a brief review of EP, PEP, and complementary hybrid EP-based EAOPs that have pragmatically treated laboratory-scale low- and high-concentrated distillery biodigester effluent, refractory pharmaceutical, textile, herbicides, micropollutant, organic pollutant, acidic solution, landfill leachates, municipal secondary effluents, hospital, and industries-based wastewater. Afterward, discussion has further extended to quantitatively evaluate energy expenditures in terms of either specific or electrical energy consumptions for EP and PEP practices through their corresponding equations.
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Colindres Bonilla, Pablo. "Chemical and Tinctorial Aspects Related to the Reuse of Effluents Treated by Ozonation in Dyeing Processes." In Textile Industry and Environment. IntechOpen, 2019. http://dx.doi.org/10.5772/intechopen.81468.
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Chandran, Thirumal, Mahesh Navnath Pharande, and Shivangi Omer. "Paraox Advanced Oxidation: An “Effective” Wastewater Treatment Process for Complex Organic Molecules Contamination." In Ozonation - New Aspects [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.111390.
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Mandatory in most part of the world to establish wastewater treatment plants before the treated effluent is discharged to any permittable discharge points. Wastewater treatment are based on the age-old concept of” activated sludge process” irrespective of the nature of effluent whether - “biodegradable, semi-biodegradable of non-biodegradable” resulting in untreated or partially treated effluent is being discharged in to receiving water. In this chapter we are discussing “Advanced Oxidation Processes (AOP)” in for various industrial segments after conducting pilot studies and full size industrial plant for various industrial segments such as leather, textile, chemical industries, engineering industries, automobile industries, fertilizer industry, petrochemical industries. Supplied industrial plants capable of not only provide proper treatment but also recover & recycle the treated effluent. In our “PARAOX” – we generate with our unique innovative patented AOP “ÖH” radicals & these “ÖH” radicals effecting mineralization of Complex Organic Molecules without generating. “sludge”. We are enclosing relevant actual data conclude a systematic analysis of all existing scientific works which was carried out to verify the evolution of this line of research and representing its implication on industrial scale.
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Angélica Guillén, Rosa, Cristina Lizama-Bahena, Luis Gerardo Trevino-Quintanilla, Martin Barragan-Trinidad, Victoria Bustos, and Gabriela Moeller-Chavez. "Peat as a Potential Biomass to Remove Azo Dyes in Packed Biofilters." In Biomass [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.102691.
Full textAbstract:
Azo dyes represent a broad group of environmental pollutants that comprise between 60 and 70% of all the dyes and pigments used. The conventional processes are not efficient in treating effluents from the textile industry. Biofiltration emerges as an unconventional, easy-to-use, effective, and low-cost technology for the treatment of textile effluents. Biofiltration uses microbial consortia that form a biofilm on a filter medium. Peat is an organic matter with the ability to retain high moisture content and represents an attractive option to treat these effluents due to its high porosity, sorption capacity, availability, and low cost. The packing materials used were: peat as an organic biomass, perlite as an inorganic material, and a mixture of peat and perlite. Sorption processes in the biofilter peat-packed material and perlite are discussed dealing with its treatment capacity and as potential removers of azo dyes, their advantages and disadvantages compared with other traditional methods, and a review of operating parameters and design criteria that allow its large-scale application as a possible nonconventional treatment technology. The biofilter with the highest removal capacity was the peat-perlite mixture that achieved a 91% for the organic matter (measured as COD), and a 92% for the color removal (Direct blue 2 dye). with a retention time of 1.18 days.
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Malik, Sumira, Shilpa Prasad, Shreya Ghoshal, Shashank Shekhar, Tanvi Kumari, Ankita Agrawal, and Bijaya Samal. "Potential of Thallophytes in Degradation of Dyes." In Advances in Environmental Engineering and Green Technologies, 440–74. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-7062-3.ch017.
Full textAbstract:
Synthetic dyes cause hazardous health-related problems in humans and affect the biological system underwater. They also have a negative impact on the nutritive value of soils and thereby on crops. Until now there is no effective method to remove the harmful component of dyes from the environment. However, the integrated treatment using bio agents with implication of physical and chemical processes can be effective in the treatment of dye effluents. From the complex azo dyes to their dissociation via thallophytes is a new scope for sustenance. Various studies have supported that laccases have the capability to degrade synthetic dyes that have different chemical structures. Thallophytes have been used to degrade the complex dyes with varying ranges of temperature and pH. Thallophytes have recently been used to treat the textile effluents with effective higher temperature and alkaline pH with decreasing BOD and thus cleaning them from environment in an eco-friendly and cost-efficient manner.
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Kalivel, Parameswari. "Treatment of Textile Dyeing Waste Water Using TiO2/Zn Electrode by Spray Pyrolysis in Electrocoagulation Process." In Dyes and Pigments - Novel Applications and Waste Treatment. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.95325.
Full textAbstract:
An alternative form of treatment for the remediation of textile waste water, electrocoagulation (EC) methods are used. This work deals mainly with the treatment of waste water for textile dyeing preceded by the use of wastewater. The goal of the proposed study is to evaluate the efficiency of the electrocoagulation process using TiO2/Zn electrodes using TiCl3 via spray pyrolysis. The surface morphology of the electrode was studied by SEM, XRD and EDS analysis. The efficiency of electrocoagulation treatment process to treat synthetic waste water containing Coralene Navy RDRLSR, Coralene Red 3G, Rubru RD GLFI dye was studied. The effect of parameters such as current density, influence of effluent pH, supporting electrolyte NaCl concentration, and EC time on dye removal efficiency were investigated. The result indicates that this process is very efficient and was able to achieve color removal (99.5%) at pH 8.5 and 0.15 A in 10 minutes.
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Shankara S., Kotresha Dupadahalli, Vijayakumar M. H., and Gaddad S. M. "Decolorization of Direct Blue." In Advances in Environmental Engineering and Green Technologies, 279–94. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-4666-9734-8.ch014.
Full textAbstract:
A thermo-alkalophilic bacterium isolated from textile mill effluent samples and identified as a Bacillus sp., on the basis of biochemical tests. The selected bacterium showed high decolorization activity in static condition as compared to shaking condition and the maximum 1000 mg l-1 Direct Blue-14 dye decolorization was takes place in 72 h. The optimum physical parameters such as temperature 40-50 °C, pH 8.0 with 2.5% (w/v) of nitrogen source and 4% (w/v) glucose were required for the decolorization of Direct Blue-14 from this bacterium. UV–Visible analyses and colorless bacterial cells suggested that Bacillus sp. exhibited decolorizing activity through biodegradation, rather than inactive surface adsorption. The degraded dye metabolites are analyzed by TLC and diazotization, carbylamines, Ames test for individual metabolite indicates biotransformation of Direct Blue-14 into aromatic amine and non-toxic aromatic metabolites. These results suggest that the isolated organism Bacillus sp. as a useful tool to treat waste water containing azo dyes at static condition.
Conference papers on the topic "Treated textile effluents"
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Dajić, Ana, and Marina Mihajlović. "Removal of the Acid Violet 109 from the textile industry wastewater using an advanced oxidation process." In 37th International Congress on Process Industry. SMEITS, 2024. http://dx.doi.org/10.24094/ptk.024.191.
Full textAbstract:
Synthetic dyes in wastewater from the textile industry pose a risk to the environment. These effluents can be treated with chemical and/or biological processes. The main problem can be the generation of toxic sludge, high operating costs or maintenance costs. Advanced oxidation pro-cesses show success with acceptable operating and maintenance costs. The aim of the work was to investigate the influence of reaction conditions on the decolourisation of simulated wastewater using the Fenton reagent in a batch system. The effectiveness was tested using the example of the anthraquinone colourant Acid violet 109. The influence of the initial concentrations of iron and hydrogen-peroxide in different molar ratios was tested.
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Santos, Gabriela, and Cristina Carvalho. "Ergonomic Fashion Design: Sustainable Dyes." In Applied Human Factors and Ergonomics Conference. AHFE International, 2022. http://dx.doi.org/10.54941/ahfe1001318.
Full textAbstract:
Water waste, contamination, and fossil fuel generated energy are acknowledged issues within the textile industry. Current dyeing processes pose serious threat to the environment and human health, often associated with toxic and carcinogenic substances that are released into the environment, through effluents not conveniently treated before being discharged into natural waters. Besides print and pattern, consumers demand for basic characteristics in textiles – these must resist to agents that cause colours to fade. On the other hand, industry must provide a great range of colours and access to huge quantities of coloured substance to dye. Simultaneously, it must be cost-effective. Natural dyes are perceived as less harmful for the environment due to its biodegradable nature. Studies reveal certain natural dyes possess UVR protection properties, as well as antimicrobial and anti-inflammatory assets. Nevertheless, depending on the nature of the dye, there are many advantages and disadvantages to consider.Through an extensive study on various fields such as Biotechnology, History, Ethnography, Biology, Archaeology, amongst many others we gathered information regarding natural coloured compounds, colour sources (plants, animals and microorganisms), ancient and modern techniques of extraction and application. This study shows the evolution of dyes throughout the centuries. It also reveals that the revival of natural dyes in addiction to new cutting edge technologies such as biotechnology might allow for an industrial feasibility.
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Angappan, Sajeevan, Mudith Karunaratne, Charitha Thambiliyagodage, and Leshan Usgodaarachchi. "Development of Silica-Copper Nanocomposite for Water Purification." In The SLIIT International Conference on Engineering and Technology 2022. Faculty of Engineering, SLIIT, 2022. http://dx.doi.org/10.54389/vodw8508.
Full textAbstract:
Water pollution is one of the serious concerns across the world at the moment. Industrial wastewater significantly contributes to the negative impacts caused by water pollution. Textile industries discharge large amounts of effluents into water streams with little or no treatment of the discharge because wastewater treatment is an expensive process. Thus, there exists a need for a cheap and effective way to treat textile effluent that contains dyes before being discharged. A high purity silica-based Nano-adsorbent was synthesized by using rice husk as the commercially available main cheap precursor. Copper-loaded silica nanoparticles were successfully functionalized with 3-aminopropyl triethoxysilane (APTES) via the sol-gel pathway to enhance the adsorption performance of organic dyes from textile effluent. The performance of produced Nano-adsorbent was evaluated by using methylene blue as waste adsorbate. As synthesized nanomaterial was characterized by X-Ray Diffraction (XRD) and Fourier Transform Infrared (FTIR) spectroscopy, the XRD results confirmed the presence of silicon dioxide (SiO2) and paramelaconite (Cu4O3) as predicted. The FTIR confirmed the presence of Si–O stretching, N-H bending, C–H stretching, Cu–O stretching and O–H bending vibrations thereby suggesting the presence of SiO2, NH2 groups, CH2, Cu4O3 and physisorbed H2O. The optimum conditions for pH and adsorbent dosage were successfully evaluated for the adsorption process. The optimum pH at which the nanomaterial performed best was at pH 4. The optimum mass of the adsorbent that gave maximum adsorption performance was 20 mg. Kinetic studies revealed that the experimented data was in better correlation with pseudo-second-order kinetics. The outcome of this project would be of interest to textile industries looking for a cheap and effective way to treat textile wastewater. KEYWORDS: Adsorption, APTES, Methylene Blue, Nano adsorbent, Rice Husk, Silica, Sol-gel,
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Simonič, Marjana. "Electrocoagulation Implementation for Textile Wastewater Treatment Processes." In International Conference on Technologies & Business Models for Circular Economy. University of Maribor Press, 2023. http://dx.doi.org/10.18690/um.fkkt.1.2023.6.
Full textAbstract:
Electrocoagulation (EC) has been employed recently to treat tannery, textile, and coloured wastewater. Three main processes are gathered in EC process, namely electrochemistry, coagulation, and flotation. This technique uses DC currents source between metal electrodes immersed in the textile effluent, which causes the dissolution of electrode plates into the effluent. The main advantage of EC compared to chemical coagulation technique is that EC generates less sludge. The objective of the present manuscript is to review the potential of electrocoagulation for the treatment of textile effluent. The most influential factors on removal efficiency, such as initial pH, time of EC, conductivity, current density, initial dye concentration and periodically reversal current on electrodes were discussed. Considering the circular economy concept, which focuses on positive society-wide benefits, manufacturing brick or ceramic materials is feasible method for disposing sludge.
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Rajamani, Sengoda Gounder. "Innovative ecological processes with recovery of chemicals and water for reuse in leather sector - an economical and sustainable approach." In The 8th International Conference on Advanced Materials and Systems. INCDTP - Leather and Footwear Research Institute (ICPI), Bucharest, Romania, 2020. http://dx.doi.org/10.24264/icams-2020.iii.15.
Full textAbstract:
The effluent discharged from conventional process in textile dyeing and tanneries are unable to meet some of the discharge parameters such as Total Dissolved Solids (TDS) in the existing physiochemical & biological treatment units. In addition to TDS management the control of volatile solids in hazardous category sludge is also becoming a necessity. To overcome these challenges faced by tanneries in the world leather, improved cleaner production, segregation of saline soak liquor and separate treatment, modified chrome recovery system and recovery of chromium & sodium chloride salt in the form of powder and quality water with TDS less than 500mg/l for reuse by tanneries have been developed for field application. Physiochemical treatment is converted into total biological treatment with sulphide oxidation using enzyme and biomass which resulted in 50% reduction in sludge generation. The secondary treated effluent and supernatant from chrome recovery system are processed with membrane units for recovery of high saline stream and quality salt for reuse in pickling process and other industrial requirement. These developments are being implemented at field level for cluster of nearly 400 tanneries in India which is first of its kind in the world.
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Palit, Sukanchan. "An overview of advanced oxidation process as an effective and visionary environmental engineering procedure to treat dye effluents from textile industries." In 2012 IEEE International Conference on Engineering Education: Innovative Practices and Future Trends (AICERA). IEEE, 2012. http://dx.doi.org/10.1109/aicera.2012.6306704.
Full textReports on the topic "Treated textile effluents"
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Graber, Ellen R., Linda S. Lee, and M. Borisover. An Inquiry into the Phenomenon of Enhanced Transport of Pesticides Caused by Effluents. United States Department of Agriculture, July 1995. http://dx.doi.org/10.32747/1995.7570559.bard.
Full textAbstract:
The objective of this collaborative research project was to determine the factors that may cause enhanced pesticide transport under effluent irrigation. For s-triazines, the potential for enhanced transport through association with effluent dissolved organic matter (OM) was shown to be small in batch and column studies and in numerical simulations. High alkalinity and pH of treated effluents increased soil-solution pH for selected soil-effluent combinations, promoting the dissolution of soil OM and mobilizing otherwise OM-retained pesticides. Evapotranspiration in column studies resulted in increased pore-water concentrations of dissolved OM and some pesticide transport enhancement with the greatest effect observed with OM-poor soils. For ionogenic pesticides, effluent-induced increases in soil-solution pH increased the mobility of pesticides with acid dissociation constants within 2 pH units of the initial soil-solution pH. Effluents high in suspended solids and/or monovalent cations resulted in blockage of soil pores reducing water-flow velocity and/or changing flow paths. Reduced flow resulted in an increase in desorption time of soil sorbed pesticides, increasing the amount available for further transport with the net effect being soil texture dependent. In terms of pesticide degradation in soils, effluents appeared to have only a minor effect for the few pesticides investigated.