A short review on dyes removal from water and wastewaters

Dyes are applied broadly in the textile industry to colour the products and give the products the final desire look. Additionally, dyes and colouring agents are used in a wide range of industries, like the papers production, packing, food and plastic industries. This means dyes and pigments represents an important pile in the global economy and civilisation. However, dyes used in this wide range of applications has a grave impact on human life due to the serious effects of the wasted dyes, in wastewater, on aquatic life, the chemistry of water and human health. Hence, the need for the removal of dyes of the produced wastewaters is an important step in any type of industry to avoid the mentioned impacts. The removal of dyes or colouring agents could be achieved in several ways, such as adsorption on active surfaces, electrolysing the colouring agent, application of oxidation chemicals, and filtration of coloured solution. This paper shortly reviews the removal of dyes from solutions by electro-coagulation method because this method is common nowadays, especially in developing countries. The results of this short review highlighted the electro-coagulation method is an effective and affordable method and suitable for the removal of dyes from water or wastewater. The EC method is also safe for the environment because there are no chemical additives in the treatment. Thus, this method could be a good option for developing countries.