Toxicological Effect of Textile Dyes and their Metabolites: A Review
02 Aug 2018-Vol. 5, Iss: 1
TL;DR: In this article, a review focused on toxic effects of various textile dyes and their intermediate metabolites formed after microbial decolourization on germination rate of different Indian agricultural crops as well as microbial growth and fish model.
Abstract: Azo dyes are widely used in the textile industry because of the ease and cost effectiveness of their synthesis and the greatest variety of colors. Dye wastewater has become one of the main sources of severe pollution problems due to the greater demand for textile products and the proportional increase in production and applications of synthetic dyes. Colored industrial effluents are often contaminated with harmful or poisonous chemical pollutants when withdrawn on the land, after land affects the germination rate of several plants thereby decreasing the soil fertility. So, environmental problems and potential hazards caused by textile wastewater have prompted many countries to treat their effluent within the stipulated standard limits before the discharging into natural water bodies for irrigational purposes. This review focused on toxic effects of various textile dyes and their intermediate metabolites formed after microbial decolourization on germination rate of different Indian agricultural crops as well as microbial growth and fish model.
Citations
More filters
TL;DR: This review focuses on MP ingestion by wild freshwater and estuarine fish and proposes several overall recommendations on the methodologies applicable to all biota to compare MP contamination levels in fish and in their environment and determine which parameters could help to define fish species for monitoring.
Abstract: Plastic pollution, especially microplastics (MP) pollution, is a hot topic in both mainstream media and scientific literature. Although rivers are potentially the major transport pathway of this pollution to the sea, plastic contamination in freshwater bodies is comparatively understudied. Microplastic pollution in freshwater fish is of growing interest, and while few studies exist, discrepancies do occur in the sampling, extraction, and identification of MP and in the expression of the results. Even though those differences hamper comparisons between some studies, a comparative work has been performed to identify the factors influencing MP ingestion by fish and consequently to target potential ecological traits that can be used to monitor species. Monitoring plastic ingested by fish will give relevant ecological information on MP pollution. This review focuses on MP ingestion by wild freshwater and estuarine fish. In addition to providing an overview of the existing data concerning contamination levels in wild freshwater fish, we aimed to (1) propose several overall recommendations on the methodologies applicable to all biota, (2) compare MP contamination levels in fish and in their environment, and (3) determine which parameters could help to define fish species for monitoring.
90 citations
TL;DR: The predicted toxic units demonstrated that GV had a more toxic effect on the growth rate and biomass yield of common duckweed than CR, and decarboxylase activity in the biosynthesis of BAs in common ducks is a useful indicator for evaluating the toxicity of both dyes.
22 citations
TL;DR: In this paper, a robust microbial assisted treatment and simultaneously reuse of the treated wastewater as an added value to induce plant growth was presented, where the degraded metabolites can be used to enhance crop productivity and for commercial application.
14 citations
TL;DR: In this paper, the results on extraction and mathematical models indicate improved extraction by ultrasonication at high solvent/solid ratio (50/1) compared to that by maceration.
Abstract: Plant pigments gained popularity over synthetic dyes because of safety issues regarding the impact on health and environment. The present paper deals with optimization of anthocyanins extraction from Paeonia officinalis L. flowers and their application in cotton eco-dyeing processes. The results on extraction and mathematical models indicate improved extraction by ultrasonication at high solvent/solid ratio (50/1) compared to that by maceration. Among the investigated extraction solvents, the most efficient was 70% ethanol. Cotton dyeing was performed via conventional procedure and ultrasonication, in the presence and absence of classic mordant (copper sulphate) and biomordants (tannic and citric acids). A successful dyeing was obtained according to ATR-FTIR analysis of mordanted dyed samples. The colour properties of dyed cellulosic substrates as determined by CIELAB system showed higher redness values and large positive differences in chroma in samples dyed with peony extract by exhaustion in presence of high concentration
3 citations
TL;DR: In this article , the effectiveness of electrochemical and biological wastewater treatment for artificially prepared industrial wastewater, comprising small amounts of technologically important dyes, namely Acid Mixture composed of Acid Violet 90 (AV90) and Acid Red 357 (AR357) in Na2SO4 (ESS) supporting solution, using Lemna minor as a bioindicator.
Abstract: In this study, we report on the effectiveness of electrochemical and biological wastewater treatment for artificially prepared industrial wastewater, comprising small amounts of technologically important dyes, namely Acid Mixture composed of Acid Violet 90 (AV90) and Acid Red 357 (AR357) in Na2SO4 (ESS—electrolyte supporting solution), as well as their impact on the environment, using Lemna minor as a bioindicator. Our study revealed that among the tested dyes, the raw ones (AM in ESS+OM) and those subjected to electrooxidation with the use of an iron anode and a copper cathode [AMFe/Cuox in ESS+OM (OECD medium is a medium recommended by the Organization for Economic Co-operation and Development for Lemna sp. Growth Inhibition Test)] were the most phytotoxic for L. minor. No phytotoxicity was detected for the tested plants in solution after electrooxidation with graphite anode and cathode (AMCox in ESS+OM). Quantitative identification of acid mixture removal was carried out by supplementary UPLC/MS-MS (Ultra-Performance Liquid Chromatography/tandem Mass Spectrometry) and UV-VIS (UltraViolet-Visible spectroscopy) instrumental analysis. The final removal after electrochemical and biological treatment of AV90 and AR357 dye components was 98 and over 99%, respectively. The results suggest that it may be a suitable replacement/addition for the generally used wastewater treatment methods.
1 citations
References
More filters
TL;DR: The current available technologies are reviewed and an effective, cheaper alternative for dye removal and decolourisation applicable on large scale is suggested.
4,772 citations
TL;DR: The use of whole bacterial cells for the reduction of water-soluble dyes present in textile dyeing wastewater has been investigated in this paper, with a focus on the use of bacteria-polymer composites for the removal of colour from reactive dye effluents.
1,455 citations
TL;DR: The first synthetic dye compound was aniline purple as mentioned in this paper, which was synthesized in 1856 and was the first compound to be synthesized from natural colorants, and it was used extensively in textile, leather tanning, paper production, food technology, agriculture, light harvesting array, coloring and pharmaceuticals.
1,044 citations
TL;DR: A developed consortium-GR completely decolorized an azo dye Scarlet R under static anoxic condition with an average decolorization rate of 16,666 microg h(-1); which is much faster than that of the pure cultures.
354 citations
TL;DR: Phytotoxicity testing with the seeds of Sorghum vulgare and Phaseolus mungo, showed more sensitivity towards the dye, while the products obtained after dye decolorization does not have any inhibitory effects.
329 citations