Safe and Sustainable Management of Metal in Hazardous Wastes

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Extractive Metallurgy".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 3157

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Guest Editor
Faculty of Mechanical Engineering and Design Department of Production Engineering, Kaunas University of Technology, 44249 Kaunas, Lithuania
Interests: recycling; energy recovery; membranes; hydrogen separation and purification

Special Issue Information

Dear Colleagues,

While hazardous waste poses a serious environmental challenge, it contains huge amounts of metals and can be used as a sustainable mining resource if managed and treated safely and correctly. This Special Issue aims to highlight the advanced techniques used for this purpose, including electrochemical and supercritical methods. We welcome papers on eco-friendly and green approaches such as hydrometallurgy, bioleaching, biological methods, and the use of green chemicals, as well as other traditional techniques and their development in this area. Finally, we are interested in studies of the environmental impacts of these technologies. 

Dr. Samy Yousef
Guest Editor

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Keywords

  • hazardous waste
  • metal recovery
  • wastewater
  • sustainable mining resource
  • environmental impacts

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Published Papers (1 paper)

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Research

14 pages, 3810 KiB  
Article
A Novel Quantitative Analysis Method for Lead Components in Waste Lead Paste
by Zhuang Zhang, Feng Xie, Wei Wang and Yun-Long Bai
Metals 2023, 13(9), 1517; https://doi.org/10.3390/met13091517 - 26 Aug 2023
Cited by 3 | Viewed by 2817
Abstract
In this study, a method for determining the lead components in waste lead paste was proposed, using simulated and spent lead paste as research objects. To compare the effectiveness of different determining methods, we selected three methods for comparison and investigated the reasons [...] Read more.
In this study, a method for determining the lead components in waste lead paste was proposed, using simulated and spent lead paste as research objects. To compare the effectiveness of different determining methods, we selected three methods for comparison and investigated the reasons for measurement deviation. The results indicate that the measurement deviation in the current method primarily stems from the following three factors: (1) Pb is soluble in an acetic acid solution under certain conditions; (2) Pb and PbO2 undergo redox reactions; and (3) hydrogen peroxide can undergo redox reactions with Pb. It is feasible to determine the lead content using the kinetic rules of Pb and PbO2 in the acetic acid-hydrogen peroxide system. The method of determination proposed in this paper is as follows. Firstly, lead dioxide is dissolved in hydrogen peroxide under acidic conditions. Subsequently, the concentration of lead dioxide is determined, and the quantity of hydrogen peroxide consumed is recorded. Then, a new sample is taken, and the lead oxide is dissolved in an acetic acid solution. The concentration of lead oxide is determined using the EDTA·2Na titration method. The residue of lead sulfate in the filtrate is dissolved in a sodium chloride solution, and its concentration is determined using the EDTA·2Na titration method. Based on the previously recorded volume of hydrogen peroxide, the remaining lead dioxide in the residue is dissolved in a mixture of acetic acid and hydrogen peroxide. The remaining lead dioxide is then removed from the new sample employing kinetic principles. Finally, the residual metallic lead in the sample is dissolved in a nitric acid solution, and its concentration is determined using the EDTA·2Na titration method. Full article
(This article belongs to the Special Issue Safe and Sustainable Management of Metal in Hazardous Wastes)
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