A review on applicability of naturally available adsorbents for the removal of hazardous dyes from aqueous waste

• Published in: Environmental monitoring and assessment Vol. 183; no. 1-4; pp. 151 - 195
• Main Authors: Sharma, Pankaj, Kaur, Harleen, Sharma, Monika, Sahore, Vishal
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.12.2011; Springer; Springer Nature B.V
• Subjects: Activated carbon; Adsorbents; Adsorption; agricultural industry; Applied sciences; Atmospheric Protection/Air Quality Control/Air Pollution; chemistry; Color removal; Coloring Agents; Coloring Agents - chemistry; Cosmetics; crystals; Dyes; Earth and Environmental Science; Ecology; Ecotoxicology; Effluents; Environment; Environmental Management; Environmental monitoring; Exact sciences and technology; fruits; green chemistry; Hazardous; hazardous waste; Membrane separation; methods; methylene blue; Monitoring/Environmental Analysis; Oxidation; Pollutants; Pollution; Studies; Textile industry; Textiles; Viola odorata; Waste Disposal, Fluid; Waste Disposal, Fluid - methods; Waste materials; Waste water; Wastes; Wastewater treatment; Water Pollutants, Chemical; Water Pollutants, Chemical - chemistry; Water pollution; Water Purification; Water Purification - methods; Water treatment; India; Column studies; Dyes; Adsorption; Low-cost adsorbents; Wastewater treatment; Organic dye; Adsorption capacity; Liquid waste; Review; Sustainable development; Waste management; Industrial waste water; Upgrading; Waste reuse; Physicochemical purification; Adsorbent; Waste water purification; Organic compounds
• ISSN: 0167-6369; 1573-2959; 1573-2959
• DOI: 10.1007/s10661-011-1914-0

The effluent water of many industries, such as textiles, leather, paper, printing, cosmetics, etc., contains large amount of hazardous dyes. There is huge number of treatment processes as well as adsorbent which are available for the processing of this effluent water-containing dye content. The applicability of naturally available low cast and eco-friendly adsorbents, for the removal of hazardous dyes from aqueous waste by adsorption treatment, has been reviewed. In this review paper, we have provided a compiled list of low-cost, easily available, safe to handle, and easy-to-dispose-off adsorbents. These adsorbents have been classified into five different categories on the basis of their state of availability: (1) waste materials from agriculture and industry, (2) fruit waste, (3) plant waste, (4) natural inorganic materials, and (5) bioadsorbents. Some of the treated adsorbents have shown good adsorption capacities for methylene blue, congo red, crystal violet, rhodamine B, basic red, etc., but this adsorption process is highly pH dependent, and the pH of the medium plays an important role in the treatment process. Thus, in this review paper, we have made some efforts to discuss the role of pH in the treatment of wastewater.