Mehali Mehta et al Int. Journal of Engineering Research and Applications www.ijera.com ISSN : 2248-9622, Vol. 4, Issue 7( Version 3), July 2014, pp.45-56 www.ijera.com 45 | Page Comparative Study for Adsorptive Removal of Coralene Blue BGFS Dye from Aqueous Solution by MgO and Fe 2 O 3 as an Adsorbent Parth Desai, Kartik Gonawala, Mehali Mehta* 1,2 Department of Environmental Engineering, Sarvajanik College of Engineering and Technology, Surat, India. 3 Department of Civil Engineering, Sarvajanik College of Engineering and Technology, Surat, India. Abstract Textile industries represent biggest impact on the environment due to high water consumption and waste water discharge as government control water pollution by setting strength regulation for waste water discharge, removal of color from waste water becomes more and more essential and attractive. Adsorption technology is very efficient in treatment of textile effluent. In this paper comparison of adsorption phenomena of textile dye Anthraquinone blue onto two different adsorbents MgO nano powder and Fe 2 O 3 amorphous powder has been studied for removal of said dye from aqueous solutions. The adsorption of Anthraquinone blue on adsorbents occurs by studying the effects of adsorbent amount, dye concentration, contact time and pH of solution. All results found that MgO nano powder and Fe 2 O 3 provide a fairly high dye adsorption capacity, which combined with their fulfilment of pollution control board’s standards, lack of pollution, lower environmental hazard and low-cost makes them promising for future applications. The present work also provides information on optimum value of different operating parameter for dye removal by two adsorbent. Keywords: Textile industries, dye removal, MgO nano powder, Fe 2 O 3 amorphous powder, Adsorption, Anthraquinone blue dye. I. Introduction: Dyes are synthetic organic compounds capable of colouring fabrics, typically derived from coal tar and petroleum based products. Dye consists of two main groups of compounds, chromophores (responsible for colour of the dye) and auxochromes (responsible for intensity of the color). According to the AATCC (American Association of Textile Chemists and Colorists), currently more than 10,000 various types of dyes are synthesized and available in the world. [1–3]. Dyes are classified according to the chemical structure and type of application. Based on chromophores, 20–30 different groups of dyes can be classified, with azo, anthraquinone, phthalocyanine and triarylmethane etc. Azo (around 70%) and anthraquinone (around 15%) compose the largest classes of dyes. Many industries, such as dyestuffs, textile, paper and plastics, use dyes to colour their products; as a result, these industries produce coloured wastewater as an unavoidable by-product [4, 6, 12, 14, 24, 25, 26, 29]. Among various industries, the textile industry ranks first in the usage of dyes for colouration of the fibers. The textile sector alone consumes about 60% of total dye production for coloration of various fabrics and out of it, it is estimated that around 10– 15% of dyes are wasted into the environment upon completion of their use in the dyeing unit which generates a strongly coloured wastewater, typically with a concentration in the range of 10–200 ppm or mg/L [24,26]. Colour in the effluent is one of the most noticeable indicators of water pollution and the discharge of highly coloured synthetic dye effluents is aesthetically very unpleasing and can damages the receiving water body by hindering the penetration of light. Moreover dyes are stable, recalcitrant, colorant, and even potentially carcinogenic and toxic [9, 10], their release into the environment creates serious environmental, aesthetical and health problems. Thus, industrial dye-laden effluents are an increasingly major concern and need to be effectively treated before being discharged into the environment in order to prevent these potential hazards [4, 12, 14, 16, 21]. Different methods are available for the removal of dyes from wastewater. These include physiochemical treatment, biological treatment, combined chemical and biochemical processes, chemical oxidation, adsorption, coagulation, filtration and membrane treatments; each of these has their own specific advantages and disadvantages. With the reference of available abundant literature review adsorption is a well-known separation process and is widely used to remove certain classes of chemical pollutants from water, especially those which are practically unaffected by conventional biological wastewater treatments. It has been found to be superior to other techniques in terms of initial cost, RESEARCH ARTICLE OPEN ACCESS