Tannery Effluents: Current Practices, Environmental Consequences, Human Health Risks, and Treatment Options. Issue 3 (19th October 2022)

• Record Type: Journal Article
• Authors: Singh, Kavita; Kumari, Madhu; Prasad, Kumar Suranjit
• Other Names: Shah Maulin P. guestEditor.; Rodriguez Couto Susana guestEditor.
• Is Part Of: Clean. Volume 51:Issue 3(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-10-19
• Subjects: advanced oxidation process -- Cr -- green technology -- tannery effluent -- tanning processes; Water quality -- Periodicals; Water -- Pollution -- Periodicals; Pollution -- Periodicals; Bioremediation -- Periodicals; Sewage -- Periodicals; Water chemistry -- Periodicals; 333.7205
• DOI: 10.1002/clen.202200303
• Languages: English
• ISSNs: 1863-0650

Abstract

Abstract: The tannery industry influences the gross domestic product/economic activity of any country, but the uncontrolled release of tannery effluents causes environmental degradation and increases health risks to human. The reason for the toxicity of tannery effluents is the presence of high concentrations of organic and inorganic chemicals used in the production of leather goods. Untreated or partially treated effluents discharged into surface water results in an increase in both chemical and biological oxygen demand as well as in an increase in the levels of total suspended solids, dissolved solids, and toxic metals in environmental bodies, especially in soil, water bodies, and water sediments. Various treatment techniques, such as physicochemical, biological, and advanced oxidation methods, which include chemical precipitation, electrocoagulation, aerobic or anaerobic treatment, wetland construction, and Fenton, electro‐Fenton, and photo‐Fenton processes are also described. This review also discusses the technical appropriateness and economic feasibility of reducing the effluent pollution load and solid waste emanating from the tannery industry. Considering the enhanced health risks in the tannery waste treatment and management regime, some green and advanced technologies should be explored. A sustainable green technology that avoids the use of toxic chemicals in the tanning process is seen well for ecological health. Abstract : Chemicals used in the leather industry are not fully consumed during leather finishing and are discharged in the effluents which ultimately enter water bodies such as rivers. The present review focuses on an efficient and sustainable effort to remove these pollutants that definitely pose a threat to the functioning of the ecosystem.