A Review of State-of-the-Art Technologies in Dye-Containing Wastewater Treatment – The Textile Industry Case

Abstract

Recently, new single or hybrid/combined processes have attracted much attention for treatment of textile and dyeing wastewaters. These processes which may be termed as state of the art technologies are membrane separation processes, ultrasonic, photochemical and electrochemical processes. "lthough the conventional methods still have been tried with some new materials such as, new adsorbents or coagulants, employing the new generation methods such as, electrocagulation-electrooxidation, sonooxidation or photo oxidation are gaining in popularity when the treatment of textile wastewaters is discussed. The purpose of the book chapter is to bring an overview on the new treatment methods for textile wastewaters, one of the most important source of environmental pollution. Despite the fact that there is no uniform standard currently, many countries have legalized some strict discharging standards and scientists and researchers face new technologies including electrical, sonic, magnetic, optical and thermal methods. "lthough many researches on treatment of synthetic or real wastewaters with various methods are available, very few researches have been carried out on the cutting-edge technologies. Moreover, there are a lot of review article or book chapters on textile wastewater treatment processes individually based on each conventional process such as coagulation, adsorption, chemical oxidation, and biological decolorization. Therefore, in this part of the book, following major and minor titles are stated truly on the aforementioned new technologies. "esides, these parts are not only about cutting-edge technologies, but also related with conventional methods and their new applications in colored wastewater treatment area briefly.

Removal of Eriochrome Black textile dye from aqueous solution by combined electrocoagulation–electroflotation methodology

“…Synthetic dyes from the textile industry are used on a large scale, generating several problems in the environment (Forgacs et al 2004;Gupta and Suhas 2009). The textile sector stands out due to the high demand of water required in its processes and the consequent generation of large volumes of effluents, and it is estimated that in the production of cotton fabric, for example, water consumption may range from 100 to 300 L Kg −1 of cotton fabric (Arslan et al 2016). In fact, when these dyes are dumped without proper treatment in aqueous effluents, they immediately interfere with the aquatic ecosystem in several ways (Joshi et al 2004).…”

Performances of Anoxic- Aerobic Membrane Bioreactors for The Treatment of Real Textile Wastewater

“…Membrane bioreactor (MBR) are the combination of membrane technology and biological treatment. MBR has been applied in many industrial wastewater treatment systems (Arslan et al, 2016) The main benefits of using MBR for textile effluent treatments are high degree of carbon, nitrogen and color removal, and complete solid removal which results into highly quality of treated wastewater for reuse application (Luong et al, 2016).…”

Evaluation and Predictive Modeling of Removal Condition for Bioadsorption of Indigo Blue Dye by Spirulina platensis

“…To remove the color of the textile effluents, sometimes different chemical treatments are used, including physical and biological agents [20][21][22][23][24]. However, some of these methods are impractical for application due to their high costs or waste production.…”