Abstract
Selenium pollution has been a topic of extensive research dating back further than the last decade and has attracted significant attention from several environmental and regulatory agencies in order to monitor and control its discharge from myriad industrial sources. The mining industry is a prime contributor of hazardous selenium release in the aquatic systems and is responsible for both acute and chronic impacts on living organisms. Herein we provide an overview of selenium contamination issues, with a specific focus on selenium release from mining industries, including a discussion of various technologies commonly employed to treat selenium-impacted waters from mining discharge. Different cases pertaining to selenium release from Alaskan mines (during years 2000–2015) are also presented, along with measures taken to mitigate high concentration releases. For continued resource exploration and economic development activities, as well as environmental preservation, it is important to fundamentally understand such emerging and pressing issues as selenium contamination and investigate efficient technological approaches to counter these challenges.
Highlights
Selenium release and pollution is a worldwide phenomenon that results from a wide variety of anthropogenic activities, such as agriculture, mining, and other process industries
This article provides a brief introduction to selenium chemistry and toxicity, presents a detailed review of currently available techniques for removing selenium from industrial/mining wastewater, and discusses mining-related selenium contamination from Alaskan mines
This article provides a brief introduction to selenium chemistry and toxicity, presents a detailed determines its review available formavailable and istechniques governed by physical, chemical and biological of currently for removing selenium from industrial/mining wastewater,processes
Summary
Selenium release and pollution is a worldwide phenomenon that results from a wide variety of anthropogenic activities, such as agriculture, mining, and other process industries. Only present in trace amounts, mining operations expose selenium-bearing elements to air and water This mobilizes selenium into aquatic systems where it bioaccumulates in the food chain, thereby escalating its hazardous effects. This article provides a brief introduction to selenium chemistry and toxicity, presents a detailed determines its review available formavailable and istechniques governed by physical, chemical and biological of currently for removing selenium from industrial/mining wastewater,processes. The speciationof of selenium selenium determines its available form and is governed by physical, chemical and biological processes This by the redox conditions and pH, which plays a crucial role in designing any selenium treatment discussion will be focused on the inorganic forms, which are of prime concern to the mining industry.
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