Journal Article10.1080/10643380091184237
Decolorization of Wastewater
1K
TL;DR: In this article, the background information of dye molecules and dye waste characteristics are described and the methods for color measurements and standards are discussed, and different techniques including almost all the known physical, chemical and biological techniques are described for decolorization.
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Abstract: The public demand for color-free waste discharge to receiving waters and tougher color standards have made decolorization of a variety of industrial wastes a top priority. Unfortunately, with the complicated color-causing compounds, the decolorization of these wastes is a difficult and challenging task. This article first describes the background information of dye molecules and dye waste characteristics. The methods for color measurements and standards are then discussed. Different techniques including almost all the known physical, chemical and biological techniques are described for decolorization. Each process alone may not be able to meet the requirements. A combination of these processes, for example, chemical-biological, biological-chemical, chemical-physical, chemical-chemical, etc. is often used. The formation of intermediates during the decolorization process is emphasized. These byproducts may be more toxic than the parent compounds. Thus, the extent of the mineralization in waste decolorizatio...
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Citations
Characteristics of cationic red X-GRL adsorption by raw diatomite and diatomite concentrate
TL;DR: In this paper, raw diatomite (RD) was used for the adsorption of cationic red X-GRL from aqueous solutions. But, the results showed that the RD could uptake more XGRL than DC due to its higher content of fine particle and therefore, due to higher surface area available for adorption.
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Anthraquinone compounds as redox mediators for enhanced continuous-flow anaerobic biotransformation of reactive dyes under hypersaline conditions
TL;DR: In this paper, the effect of anthraquinone disulfonate (AQDS) on the decolorization of the azo dye Reactive Red 198 (RR198) and RB4, both serving as redox mediators, was assessed.
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Microwave-Assisted Organic Pollutants Degradation
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TL;DR: The potential application of microwave energy irradiation as a major source of energy and/or pretreatment for the degradation of various types of organic pollutants found in wastewaters and other contaminated water bodies has been a growing research interest.
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A.E. Greenberg,Lenore S. Clesceri,Andrew D. Eaton +2 more
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TL;DR: The most widely read reference in the water industry, Water Industry Reference as discussed by the authors, is a comprehensive reference tool for water analysis methods that covers all aspects of USEPA-approved water analysis.
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Decolorizing dye wastewater with Fenton's reagent
TL;DR: In this article, simulated dye wastewater, separately prepared with disperse, reactive, direct, acid and basic dyes, were decolorized with a hydrogen peroxide-ferrous ion system, known as Fenton's reagent.
729
The degradation of dyestuffs: Part II Behaviour of dyestuffs in aerobic biodegradation tests
TL;DR: In this paper, the results confirmed that dyestuffs are most unlikely to show any significant biodegradation in such tests and that substantial colour removal was observed which may be attributed to the elimination of the dyes by adsorption.
696
The removal of colour from effluent using various adsorbents—III. Silica: Rate processes
TL;DR: In this article, the rate of adsorption of Astrazone Blue, a basic dye, on Sorbsil Silica has been studied, where particle size, initial dye concentration, agitation and dye solution temperature were all considered.
538
Environmental Photochemistry on Semiconductor Surfaces: Photosensitized Degradation of a Textile Azo Dye, Acid Orange 7, on TiO2 Particles Using Visible Light
TL;DR: In this article, the degradation of a textile azo dye, acid orange 7, has been carried out on TiO2 particles using visible light using diffuse reflectance absorption and FTIR techniques.
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