STUDY OF REMOVAL TECHNIQUES FOR DYES BY ADSORPTION: A REVIEW

Chemical Engineering

Various dyes present in water have adverse effect on human life, plants and on animals. There are various technologies used to effectively remove these dyes from effluent water. The methodology, advantages and disadvantages of various technologies are discussed in detail. Adsorption of dyes, the matter of this review, is a resourceful, low-cost and environmentally caring remedy for a host of pollutants. These may be of biological, organic and inorganic in origin within water. The efficient and successful application of adsorption demands that the pollutant, source of adsorbent are in close proximity or contact with each other. The ability of adsorption technology to remove low levels of persistent organic pollutants as well as microorganisms in water has been widely demonstrated and, progressively, the technology is now being commercialized in many areas of the world including developing nations. This review considers recent developments in the research and application of adsorption for the treatment of dyes in water. The review considers transport characteristics on the adsorbent surface, reactor design and organic degradation. The effects of adsorption operating parameters on the process are discussed in addition.

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