Bacterial leaching of critical metal values from Polish copper metallurgical slags using Acidithiobacillus thiooxidans

2019 ◽  
Vol 236 ◽  
pp. 436-445 ◽  
Author(s):  
Bartosz Mikoda ◽  
Anna Potysz ◽  
Ewa Kmiecik
Keyword(s):  
Acidithiobacillus Thiooxidans ◽  
Bacterial Leaching ◽  
Critical Metal ◽  
Metallurgical Slags

Comparison of Cu, Zn and Fe bioleaching from Cu-metallurgical slags in the presence of Pseudomonas fluorescens and Acidithiobacillus thiooxidans

2016 ◽  
Vol 68 ◽  
pp. 39-52 ◽  
Author(s):  
Anna Potysz ◽  
Piet N.L. Lens ◽  
Jack van de Vossenberg ◽  
Eldon R. Rene ◽  
Malgorzata Grybos ◽  
...  
Keyword(s):  
Pseudomonas Fluorescens ◽  
Acidithiobacillus Thiooxidans ◽  
Metallurgical Slags

scholarly journals (Bio)dissolution of Glassy and Diopside-Bearing Metallurgical Slags: Experimental and Economic Aspects

Minerals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 262
Author(s):  
Anna Potysz ◽  
Bartosz Mikoda ◽  
Michał Napieraj
Keyword(s):  
Growth Medium ◽  
Slag Phase ◽  
Major Elements ◽  
Term Treatment ◽  
Acidithiobacillus Thiooxidans ◽  
Short Term ◽  
Short Term Treatment ◽  
Recovery Potential ◽  
Metallurgical Slags ◽  
Medium Potential

Dissolution of diopside-bearing slag and its amorphous counterpart was investigated to decipher recovery potential of these slags. The contribution of direct slag phase dissolution was investigated using a biotic solution with Acidithiobacillus thiooxidans versus sterile growth medium, whereas citric acid was applied to demonstrate slags dissolution in organic medium. Potential metal donor slag phases and easily released elements were identified by comparing theoretical and experimental dissolution ratios. It was shown that K and Na were the most mobile elements leaching from glassy and diopside slag (up to 99%). Recovery targeted metals were released in the quantities of 56% (Cu)–96% (Zn) from glassy slag and 27% (Cu)–98% (Zn) from diopside slag. Results demonstrated that studied slags are good candidates for Zn recovery during short-term treatment, whereas extension of time would be required for efficient Cu extraction. Abiotic growth medium had little effect on metal leaching (up to 53% versus only 3% for the glassy and diopside slags, respectively). Glassy slag revealed greater susceptibility to dissolution as compared to diopside slag. Further studies improving recovery conditions are expected to improve environmental soundness of proposed treatments and to generate residues depleted in toxic elements. This study highlights the importance of evaluation of individual slags in terms of metal and major elements leachability.

RESEARCHES ABOUT THE CHARACTERIZATION OF METALLURGICAL SLAGS FOR LANDFILLED WASTES MINIMIZATION

2015 ◽  
Vol 14 (9) ◽  
pp. 2115-2126 ◽  
Author(s):  
Dana-Adriana Ilutiu-Varvara ◽  
Liviu Brandusan ◽  
George Arghir ◽  
Elena Maria Pica
Keyword(s):  
Metallurgical Slags

Technological Solution for the Treatment of Wastewater Resulting from Autochthonous Aquacultures in Order to Protect the Marine Water Quality

2018 ◽  
Vol 68 (12) ◽  
pp. 2752-2755
Author(s):  
Carmen Tociu ◽  
Tania Zaharia ◽  
Elena Diacu ◽  
Cristina Maria ◽  
Florica Marinescu ◽  
...  
Keyword(s):  
Water Quality ◽  
Wastewater Treatment ◽  
Black Sea ◽  
Pilot Scale ◽  
Integrated System ◽  
The Black Sea ◽  
Technological Solution ◽  
Aluminium Sulphate ◽  
Metallurgical Slags ◽  
Treatment Step

This paper depicts the research conducted at a micro-pilot scale on autochthonous cultures in order to develop adequate technological solutions for the treatment of wastewater resulting from shrimp cultures (Palaemonidae) that would ensure the protection of the Black Sea ecosystem and constitute an applicable tool for the development of aquaculture in Romania. The proposed objectives were attained by adopting an integrated system of marine cultures shrimps-mussels-macrophyte algae, followed by a conventional chemical treatment step using aluminium sulphate recovered from metallurgical slags. This system together with wastewater treatment ensures an optimum development of species and a minimum load of pollutants in the aquatic environment.

Recovery of a critical metal from electronic wastes: Germanium extraction with organic acid

2021 ◽  
pp. 128223
Author(s):  
Parinaz Rafiee ◽  
Sina Ghassa ◽  
Farhad Moosakazemi ◽  
Rasoul Khosravi ◽  
Hossein Siavoshi
Keyword(s):  
Organic Acid ◽  
Critical Metal

scholarly journals Use of Treated Non-Ferrous Metallurgical Slags as Supplementary Cementitious Materials in Cementitious Mixtures

2021 ◽  
Vol 11 (9) ◽  
pp. 4028
Author(s):  
Asghar Gholizadeh Vayghan ◽  
Liesbeth Horckmans ◽  
Ruben Snellings ◽  
Arne Peys ◽  
Priscilla Teck ◽  
...  
Keyword(s):  
Mechanical Performance ◽  
Cementitious Materials ◽  
Supplementary Cementitious Materials ◽  
Partial Replacement ◽  
Strength Development ◽  
Supplementary Cementitious Material ◽  
Performance Requirements ◽  
Metallurgical Slags ◽  
Leaching Behaviour ◽  
Kinetics Of

This research investigated the possibility of using metallurgical slags from the copper and lead industries as partial replacement for cement. The studied slags were fayalitic, having a mainly ferro-silicate composition with minor contents of Al2O3 and CaO. The slags were treated at 1200–1300 °C (to reduce the heavy metal content) and then granulated in water to promote the formation of reactive phases. A full hydration study was carried out to assess the kinetics of reactions, the phases formed during hydration, the reactivity of the slags and their strength activity as supplementary cementitious material (SCM). The batch-leaching behaviour of cementitious mixtures incorporating treated slags was also investigated. The results showed that all three slags have satisfactory leaching behaviour and similar performance in terms of reactivity and contribution to the strength development. All slags were found to have mediocre reactivity and contribution to strength, especially at early ages. Nonetheless, they passed the minimum mechanical performance requirements and were found to qualify for use in cement.

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