Anaerobic Treatment of Mine Wastewater for the Removal of Selenate and its Co-Contaminants
Anaerobic Treatment of Mine Wastewater for the Removal of Selenate and its Co-Contaminants

Author: Lea Chua Tan

Publisher: CRC Press

Published: 2018-09-03

Total Pages: 20

ISBN-13: 0429828411

DOWNLOAD EBOOK

Selenium (Se) pollution has led to several cases of severe aquatic ecosystem deterioration due to Se poisoning caused by bioaccumulation over time. However, the removal of selenate (SeO42-) from wastewater streams with co-contaminants has been largely considered as a black box in anaerobic biological systems using mixed consortia. This research aimed at addressing the effect of wastewater characteristics, i.e. co-contaminants such as nitrate (NO3-) and sulfate (SO42-), heavy metals and pH, on the biological reduction of SeO42- and evaluating process integration for Se-laden wastewater treatment with co-contaminants. This study demonstrated that the presence of co-contaminants can actually be beneficial for Se removal provided that the concentrations are carefully monitored and appropriate operating conditions and process configurations are used. The Se removal (total Se and SeO42-) efficiency increased by ~30% in the presence of NO3- and/or SO42- compared to systems with SeO42- alone. Additionally, an integrated process of an ion exchange (IX) column and bioreactors showed improved overall removal capacity for SO42- and total Se. The knowledge and information gained from this research can help in the advancement and application of biological processes, i.e. predicting of reactor performance, solving specific design or practical problems and implementing novel treatment techniques for Se-laden mine wastewater.

Bioremediation of Selenium Contaminated Wastewater
Bioremediation of Selenium Contaminated Wastewater

Author: Eric D van Hullebusch

Publisher: Springer

Published: 2017-09-02

Total Pages: 134

ISBN-13: 3319578316

DOWNLOAD EBOOK

This book features the reduction and removal of selenium in wastewater via bioremediation. Arranged over five chapters, this book provides information regarding the interaction between micro-organisms and selenium, and it also explains the biogeochemistry of selenium in engineered ecosystems designed for wastewater treatment. The analytical approaches currently adopted by the scientific community are also described and discussed. Readers will find examples of the biological treatment of selenium contaminated wastewater, and discover a concise overview of selenium removal processes that are currently implemented at lab-scale as well as at industrial scale.

Selenium Contamination in Water
Selenium Contamination in Water

Author: Pooja Devi

Publisher: John Wiley & Sons

Published: 2021-05-12

Total Pages: 436

ISBN-13: 1119693543

DOWNLOAD EBOOK

The contamination of environment and water resources by Selenium (Se) and its oxyanions from various sources are emerging contaminants of significant health and environmental concern. The primary sources include agricultural drainage water, mine drainage, residues from fossil fuels, thermoelectric power plants, oil refineries, and metal ores. Various methods and technologies have been developed which focus on the treatment of selenium-containing waters and wastewater. High concentrations of selenium in water cause various adverse impact to human health, such as carcinogenic, genotoxic, and cytotoxic effects. But in the lower concentrations, it is a useful constituent of the biological system. The range between toxicity and deficiency of selenium is minimal (40 to 400 μg per day), due to its dual nature. Selenium Contamination in Water contains the latest status and information on selenium’s origin, its chemistry and its toxicity to humans. The book represents a comprehensive and advanced reference book for students, researchers, practitioners, and policymakers in working in the field of metalloids, in particular selenium. A special emphasis is given on its geological distribution, monitoring techniques, and remedial technologies. As such, the authors critically analyze the various techniques used for the monitoring and removal of selenium from water. Featuring chapters arranged according to the major themes of the latest research, with specific case-studies from industrial experiences of selenium detection and removal, Selenium Contamination in Water will be particularly valued by researchers, practitioners, and policymakers in working in the field of metalloids including selenium.

Water in Mineral Processing
Water in Mineral Processing

Author: Jaroslaw Drelich

Publisher: SME

Published: 2012

Total Pages: 417

ISBN-13: 0873353498

DOWNLOAD EBOOK

One of the major challenges confronting the mining and minerals processing industry in the 21st century will be managing in an environment of ever decreasing water resources. Because most mineral processing requires high water use, there will be even more urgency to develop and employ sustainable technologies that will reduce consumption and the discharge of process-affected water. Water in Mineral Processing provides a comprehensive, state-of-the-art examination of this vital issue. A compilation of papers presented at the First International Symposium on Water in Mineral Processing, this book shares the insights of dozens of respected experts from industry and academia. A significant portion of the content is devoted to saline solutions and processing with sea water. Other chapters explore the latest in water treatment and biological methods, the effect of water quality on minerals processing, and water and tailings management. Water in Mineral Processing is an authoritative, first-of-its-kind resource that can help mining practitioners apply innovative water-use and purification technologies in the demanding years ahead.

Abandoned Mine Site Characterization and Cleanup Handbook
Abandoned Mine Site Characterization and Cleanup Handbook

Author: Nick Cato

Publisher:

Published: 2001-01-01

Total Pages: 400

ISBN-13: 9780756730352

DOWNLOAD EBOOK

This Handbook has been developed by the EPA as a resource for project managers working on addressing the environmental concerns posed by inactive mines and mineral processing sites. This is not policy or guidance, but a compendium of info. gained during many years of experience on mine site cleanup projects. Chapters: Overview of Mining and Mineral Processing Operations; Environmental Impacts from Mining; Setting Goals and Measuring Success; Community Involve. at Mining Waste Sites; Scoping Studies of Mining and Mineral Processing Impact Areas; Sampling and Analysis of Impacted Areas; Scoping and Conducting Ecological and Human Health Risk Assessments at Superfund Mind Waste Sites; Site Mgmt. Strategies; and Remediation and Cleanup Options.