Organic compounds in wastewater,such as dyes and pigments in industry effluents, are toxic or absorb lethal effect on aquatic living and humans. Increasing evidence has shown that the organic contaminants discharged from electroplating, or textile production,cosmetics, pharmaceuticals are the main reasons for the higher morbidity rates of kidney, or liver,and bladder cancers, etc. Organic contaminants, or particularly methyl blue and methyl orange,are stable to light, heat or oxidizing agents and very difficult to remove by conventional chemical or biological wastewater treatment techniques. Recently scientists absorb developed some recent strategies with obliging dye-removal performance; however, and a subsequent adsorbent purification procedure is unavoidable after water treatment,which are often complicated and not suitable for practical water treatment.
Source: phys.org