A review on chemical coagulation/flocculation technologies for removal of colour from textile wastewaters.

Dyes are an important class of organic pollutants and are well known for their hazardous effects on aquatic life in general and human beings in particular. In order to reduce the negative effects of dye contaminated wastewater on humans and the environment, the wastewater must be treated carefully before discharge into main streams. Advances in science and technology have led to the evolution of several techniques for the removal of dyes from industrial and domestic effluents. In this review, the more recent methods for the removal of dyes from water and wastewater have been discussed. Wastewater treatment techniques such as adsorption, oxidation, flocculation–coagulation, membrane filtration and biological treatment have been highlighted. In addition, efforts were made to review all the available techniques and recently published studies from 2010–2014. Furthermore, the performance and special features of these technologies have been summarised. Advantages and limitations of each technique are also presented. A thorough literature survey revealed that chemical oxidation, adsorption, and biological treatments have been the most frequently investigated techniques for dye removal over the past few years.

https://pubs.rsc.org/en/content/articlepdf/2015/ra/c4ra16959j

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Synthesis and characterization of Fe3O4/kaolin magnetic nanocomposite and its application in wastewater treatment

A.H. Konsowa

Papers

Decolorization of wastewater containing direct dye by ozonation in a batch bubble column reactor

Green synthesis of graphene from recycled PET bottle wastes for use in the adsorption of dyes in aqueous solution.

Evaluation of an innovative polyvinyl chloride (PVC) ultrafiltration membrane for wastewater treatment

Decolorization of industrial wastewater by ozonation followed by adsorption on activated carbon.

Synthesis and characterization of Fe3O4/kaolin magnetic nanocomposite and its application in wastewater treatment