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Water
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Mining Wastewater Treatment and Reuse
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Mining Wastewater Treatment and Reuse

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Wastewater Treatment and Reuse".

Deadline for manuscript submissions: closed (20 December 2022) | Viewed by 19138

Special Issue Editor

Prof. Dr. Qicheng Feng

E-Mail Website
Guest Editor
State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
Interests: mineral separation; flotation reagents; surface analysis; leaching; industrial wastewater treatment; mineral surface chemistry; process mineralogy; comprehensive utilization of mineral resources
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Mine is an important source of metal resources, and high volumes of water are consumed in the recovery process of metals. Afterwards, mining wastewater are generated in the mineral processing industry, which contains lots of organic and inorganic pollutants, such as metal ions and flotation reagents. Direct discharge of mining wastewater not only results in the environmental pollution, but also leads to a waste of water resource, so recycling/resue is an essential aspect of circular economy in the mineral processing industry. Thus, there is a crucial need for research on the theory and application of mining wastewater treatment and reuse to achieve the recycling of wastewater in the mineral processing industry. Besides, valuable metal ions can be recovered by means of physical or chemical methods to turn waste into treasure. This Special Issue will focus on recent advances in mining wastewater resourcization, treatment technologies of mining wastewater, recovery of metal ions, removal of flotation reagents in mining wastewater, water quality analysis and adsorption mechanims in the treatment process of mining wastewater. It will contribute to the understanding of these processes and the development of novel approaches to improve the treatment and reuse of mining wastewater. 

Prof. Dr. Qicheng Feng
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • mining wastewater
  • wastewater resourcezation
  • metal ion recovery
  • treatment technologies
  • flotation reagent removal
  • water quality analysis
  • adsorption

Published Papers (3 papers)

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Research

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14 pages, 1578 KiB  
Article
Settling of Iron and Aluminum Particles in Acid Solutions for Acid Drainage Remediation
by Paula Guerra, Julio Valenzuela, Consuelo Rámila and Giannina Cattaneo
Water 2022, 14(14), 2231; https://0-doi-org.brum.beds.ac.uk/10.3390/w14142231 - 15 Jul 2022
Viewed by 2258
Abstract
Mineral processing is intensive in water usage. Unfortunately, a large portion of this valuable asset is contaminated by toxic species that leach from tailings or mineral ore, leading to the formation of acid drainage. Water from acid drainages can still be recovered by [...] Read more.
Mineral processing is intensive in water usage. Unfortunately, a large portion of this valuable asset is contaminated by toxic species that leach from tailings or mineral ore, leading to the formation of acid drainage. Water from acid drainages can still be recovered by passive environmentally friendly treatments. An underestimated passive treatment is the settling of harmful metals, such as iron and aluminum. In this sense, floc settling from acid drainage has not been well studied. The objective of this work is to research the phenomena governing iron and aluminum floc settling in acid drainage, particularly, the chemical conditions that promote settling. The settling velocity of iron and aluminum flocs was studied in a column at different pH and iron/aluminum concentrations. Stability was studied through zeta potential. According to the results, iron flocs settle faster than aluminum and aluminum+iron (mixed) flocs, and a lower pH promotes a higher settling velocity and greater floc stability, which a lower zeta potential (which favors aggregation) allows for. The results improve the understanding of the interactions between the chemical and physical processes involved in floc settling, which, in turn, can improve the optimization of water treatment design. Future experiments must include particle size distribution, floc porosity, and effective particle density of iron and/or aluminum particles in acid waters. Full article
(This article belongs to the Special Issue Mining Wastewater Treatment and Reuse)
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Review

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15 pages, 855 KiB  
Review
Resource Utilization of Acid Mine Drainage (AMD): A Review
by Jiaqiao Yuan, Zhan Ding, Yunxiao Bi, Jie Li, Shuming Wen and Shaojun Bai
Water 2022, 14(15), 2385; https://0-doi-org.brum.beds.ac.uk/10.3390/w14152385 - 01 Aug 2022
Cited by 21 | Viewed by 7526
Abstract
Acid mine drainage (AMD) is a typical type of pollution originating from complex oxidation interactions that occur under ambient conditions in abandoned and active mines. AMD has high acidity and contains a high concentration of heavy metals and metalloids, posing a serious threat [...] Read more.
Acid mine drainage (AMD) is a typical type of pollution originating from complex oxidation interactions that occur under ambient conditions in abandoned and active mines. AMD has high acidity and contains a high concentration of heavy metals and metalloids, posing a serious threat to ecological systems and human health. Over the years, great progress has been made in the prevention and treatment of AMD. Remediation approaches like chemical neutralization precipitation, ion exchange, membrane separation processes, and bioremediation have been extensively reported. Nevertheless, some limitations, such as low efficacy, excessive consumption of chemical reagents, and secondary contamination restrict the application of these technologies. The aim of this review was to provide updated information on the sustainable treatments that have been engaged in the published literature on the resource utilization of AMD. The recovery and reuse of valuable resources (e.g., clean water, sulfuric acid, and metal ions) from AMD can offset the cost of AMD remediation. Iron oxide particles recovered from AMD can be applied as adsorbents for the removal of pollutants from wastewater and for the fabrication of effective catalysts for heterogeneous Fenton reactions. The application of AMD in beneficiation fields, such as activating pyrite and chalcopyrite flotation, regulating pulp pH, and leaching copper-bearing waste rock, provides easy access to the innovative utilization of AMD. A review such as this will help researchers understand the progress in research, and identify the strengths and weaknesses of each treatment technology, which can help shape the direction of future research in this area. Full article
(This article belongs to the Special Issue Mining Wastewater Treatment and Reuse)
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20 pages, 1618 KiB  
Review
Wastewater Treatment in Mineral Processing of Non-Ferrous Metal Resources: A Review
by Shengbing Meng, Shuming Wen, Guang Han, Xiao Wang and Qicheng Feng
Water 2022, 14(5), 726; https://0-doi-org.brum.beds.ac.uk/10.3390/w14050726 - 24 Feb 2022
Cited by 23 | Viewed by 7509
Abstract
Water used by mining enterprises needs to be comprehensively recovered and utilized to achieve clean production. This requires the effective treatment of mineral processing wastewater. Wastewater produced during non-ferrous metal mineral processing contains a complex mixture of pollutants at high concentrations, making comprehensive [...] Read more.
Water used by mining enterprises needs to be comprehensively recovered and utilized to achieve clean production. This requires the effective treatment of mineral processing wastewater. Wastewater produced during non-ferrous metal mineral processing contains a complex mixture of pollutants at high concentrations, making comprehensive treatment difficult. Here, the sources of and hazards posed by wastewater produced during non-ferrous metal mineral processing are introduced and the techniques for removing heavy metal ions and organic chemicals are reviewed. Chemical precipitation and adsorption methods are often used to remove heavy metal ions. Chemical precipitation methods can be divided into hydroxide and sulfide precipitation methods. Organic chemicals are mainly removed using oxidation methods, including electrochemical oxidation, photocatalytic oxidation, and ultrasonic synergistic oxidation. External and internal cyclic utilization methods for treating wastewater produced by mineral processing plants are introduced, and a feasibility analysis is performed. Full article
(This article belongs to the Special Issue Mining Wastewater Treatment and Reuse)
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