A5073620521- Metal Extraction and Bioleaching
- Extraction and Separation Processes
- Minerals Flotation and Separation Techniques
- Recycling and Waste Management Techniques
- Mine drainage and remediation techniques
- Mineral Processing and Grinding
- Adsorption and biosorption for pollutant removal
- Phosphorus and nutrient management
- Nitrogen and Sulfur Effects on Brassica
- Catalysis and Hydrodesulfurization Studies
- Enzyme-mediated dye degradation
- Microplastics and Plastic Pollution
Central University of Rajasthan
2015-2022
Süleyman Demirel University
2013-2015
SRM University
2012-2013
Korea Institute of Geoscience and Mineral Resources
2012-2013
SRM Institute of Science and Technology
2012-2013
Luleå University of Technology
2007-2011
Council of Scientific and Industrial Research
2006
Institute of Minerals and Materials Technology
2006
Advanced Materials and Processes Research Institute
2006
Abstract Research on biohydrometallurgy of secondary metal resources is primarily focused the leaching valuable metals. For biological processing can be an economically more effective and environmentally friendlier alternative to traditional hydrometallurgical pyrometallurgical processes. Therefore, a rapidly evolving biotechnology that has already provided revolutionary solutions old problems associated with recovery metals by conventional pyrometallurgy chemical metallurgy. This review...
Printed circuit board (PCB) is the essential part of electronic devices and has an important source base precious metals with high economic potential. In this study, selective leaching gold from PCB was performed in iodine-hydrogen peroxide (I2-H2O2) solution system. The effects different parameters such as iodine concentrations, H2O2 concentrations solids-% on dynamics were investigated. results show that increasing a negative influence leaching. However, recovery e-wastes containing 3%...
Biomining is the use of microorganisms to catalyze metal extraction from sulfide ores. However, available water in some biomining environments has high chloride concentrations and therefore, toxicity ferrous oxidizing been investigated. Batch biooxidation Fe(2+) by a Leptospirillum ferriphilum-dominated culture was completely inhibited 12 g L(-1) chloride. In addition, effects on oxidation kinetics limited chemostat were studied. Results modeling suggest that attributed affects system, pH...
The study reports the effect of increasing pulp density on bio-catalyzed leaching metals from waste mobile phone printed circuit boards. Mixed microbial consortia iron and sulfur-oxidizing microorganisms were used for batch bioleaching at varying 7%, 10% 15% (w/v). copper content in feed material was 26.3% (w/w) prime focus to recover maximum along with other minor metals, such as zinc, aluminum, nickel. All experiments resulted 98–99% recovery together reasonable extraction Zn, Al, Ni....
The present investigation aimed to study the thermophilic bioleaching of spent catalyst with different size fractions in modified Kelly medium and without iron supplement using Sulfolobus metallicus. results obtained showed Ni Al recovery ranging from 94 97% 54 59% respectively, a lower Mo V. difference leaching yield free supplemented growth at all did not show much stating be suitable for catalyst. However, also suggested that particle >212 μm could conducive desired metal values any...
The objective of this study was to evaluate a direct classical bioengineering approach model data generated from continuous bio-oxidation Fe(2+) by Leptospirillum ferrooxidans-dominated culture fed with either 9 g or 18 L(-1) under chemostat conditions (dilution rates were between 0.051 and 0.094 h(-1)). basic Monod Pirt equations have successfully been integrated in an overall mass balance procedure, which has not previously presented detail for oxidation. To ensure conditions, it found...
In this study chemical leaching with sulphuric acid has been performed on 10 selected oxidic by-products in order to determine their neutralising capacity. The ultimate aim work is replace the lime or limestone normally used bioleaching operations maintain pH at 1.5, optimum pH-level for microorganisms, by-products. investigated includes three ashes from combustion energy production, five slag samples ore and scrap based steelmaking, an EAF dust mesa a paper pulp industry, slaked (Ca(OH)2)...
Abstract The moderate thermophilic mix culture bacteria were used to depyritize the Illinois coal of varying particle sizes (-100 μm, 100-200 +200 μm). Mineral libration analysis showed presence pyrite along with other minerals in coal. Microbial depyritization was carried out stirred tank batch reactors an iron-free 9K medium. results indicate that microbial using thermophiles is efficient process. Moreover, size important parameter which affects efficiency At end experiment, a maximum 75%...