Results 61 to 70 of about 1,741 (177)

Immobilization of Acidithiobacillus Ferrooxidans on Two Hydrogels

Chemical Engineering Transactions, 2020
Bioleaching is considered a sustainable and effective alternative to conventional micromachining and extracting processes for recovering valuable metals from electronic waste. Nevertheless, the industrial scaling-up of these applications is limited by several factors.
Santaolalla Ramirez Arrate, Rojo Azaceta Naiara, Gutierrez Caceres Junkal, Barona Fernandez Astrid   +3 more
openaire   +2 more sources

Two Key Ferredoxins for Nitrogen Fixation Have Different Specificities and Biophysical Properties

Chemistry – A European Journal, Volume 31, Issue 37, July 2, 2025.
Two ferredoxins, FdC and FdN, are collectively essential for the process of nitrogen fixation by the iron nitrogenase in R. capsulatus. We explore the biophysical factors, through spectroscopic and structural characterizations, which determine ferredoxin functionality and pathway specificity. The structure of FdC (PDB: 9I2A) and model of FdN (AF‐D5ARY6)
Holly Addison, Pascal Pfister, Ana Lago‐Maciel, Tobias J. Erb, Antonio J. Pierik, Johannes G. Rebelein   +5 more
wiley   +1 more source

Bioleaching of low-grade uranium ore using Acidithiobacillus ferrooxidans [PDF]

Indian Journal of Microbiology, 2010
Bioleaching of uranium was carried out with Turamdih ore sample procured from Uranium Corporation of India Limited, Jaduguda. The bacterial strain that was used in the leaching experiments was isolated from the Jaduguda mine water sample. Efficiency of bioleaching was studied by varying parameters like pulp density and initial ferrous concentration as ...
S, Pal, D, Pradhan, T, Das, L B, Sukla, G Roy, Chaudhury   +4 more
openaire   +2 more sources

Recent Advances in Recycling of Copper‐Based Waste Materials: A Critical Review

cMat, Volume 2, Issue 2, June 2025.
ABSTRACT Copper plays a crucial role in the civilization of our lives. This review examines the flow of copper from the mining of ores to the end‐of‐life product, with particular emphasis on the recovery and re‐functionalization of copper and copper‐containing wastes. Beginning with the analysis of the global copper market, reserves, supply, and demand,
Rui‐Ting Zhan, Hong‐Bo Zhang, Jian‐Nan Pei, Hao Yang, Wang Lu, Pei‐Yuan Ye, Bo He, Shi‐Long Luo, Zhou‐Guang Lu, Feng Jiang, Zheng‐He Xu   +10 more
wiley   +1 more source

Estudo da oxidação dos sulfetos sintéticos molibdenita (MoS2) e covelita (CuS) por Acidithiobacillus ferrooxidans via respirometria celular Oxidation study of the synthetic sulfides molybdenite (MoS2) and covellite (CuS) by Acidithiobacillus ferrooxidans using respirometric experiments

Química Nova, 2009
This paper analyses the oxidation of covellite and molybdenite by Acidithiobacillus ferrooxidans strain LR using respirometric experiments. The results showed that both sulfides were oxidized by A.
Wilmo E. Francisco Junior, Denise Bevilaqua, Oswaldo Garcia Júnior   +2 more
doaj   +1 more source

Oxidative dissolution of bornite by Acidithiobacillus ferrooxidans

Process Biochemistry, 2010
Abstract The oxidation of finely ground (−200 μm) bornite (Cu 5 FeS 4 ) by Acidithiobacillus ferrooxidans was evaluated in oxygen uptake and shake flasks experiments. The oxidation was a net acid-consuming reaction. Residual bornite was not detected by X-fray diffraction in solids after 2 days of contact in acid leach solution, indicating that the ...
Bevilaqua, D., Garcia, O., Tuovinen, O. H.   +2 more
openaire   +2 more sources

Lanmodulin‐Decorated Microbes for Efficient Lanthanide Recovery

Advanced Materials, Volume 37, Issue 10, March 12, 2025.
Bio‐scaffolded lanmodulin (LanM) on E. coli is developed as a simple, effective material for repeated capture and release of rare earth elements (REEs). Over 80% of four REE cations are captured, even in the presence of excess competitive ions. The material can be employed in a filtration flow‐through system with a capture capacity of 11.8 ± 0.9 mg g−1
Melanie Gut, Tatum Wilhelm, Olivia Beniston, Safiyyah Ogundipe, Chao‐Chi Kuo, Kristine Nguyen, Ariel Furst   +6 more
wiley   +1 more source

Evaluación de oxidación bacteriana de sulfuros con Acidithiobacillus ferrooxidans mediante pruebas de FTIR y difracción de rayos X Evaluating Acidithiobacillus ferrooxidans bacterial oxidation of sulphur compounds using FTIR and X-ray diffraction assays

Revista Colombiana de Biotecnología, 2003
Una cepa bacteriana nativa con capacidad de oxidar hierro ferroso y compuestos del azufre fue aislada a partir de efluentes y material de la mina de oro La Maruja, en el municipio de Marmato (Caldas), la cual fue identificada bioquímicamente como ...
Ruiz Orlando, Lemehsko Victor, Montoya Olga I., Márquez Marco A., Muñoz Alexandra   +4 more
doaj   +2 more sources

Physicochemical vs Electrochemical Technologies for Metal Recovery – Main Insights, Comparison, Complementarity and Challenges

Chemistry–Methods, Volume 5, Issue 3, March 2025.
Different electrochemical and physicochemical methods employed for metal recovery and removal from various sources are presented herein, along with their key performance indicators. The main strengths and weaknesses of each technology are discussed in a comparative manner, when possible.
Stefanos Mourdikoudis, Xochitl Dominguez‐Benetton   +1 more
wiley   +1 more source

Recycling of Critical Metals from Light‐Emitting Diodes

Chemie Ingenieur Technik, Volume 97, Issue 1-2, Page 110-115, February 2025.
The new process for recovering the critical metals indium and lutetium from light‐emitting diodes uses polyvinyl chloride (PVC) or PVC waste as a cheap chlorine source for the chlorination of indium for evaporation. The residue was leached out and the filtrate was used for liquid‐liquid extraction to recover lutetium, as a test‐of‐concept study ...
Michael Peer, Thomas Fehn, Alexander Hofmann, Burkhard Berninger, Werner Kunz   +4 more
wiley   +1 more source