Scopus Publications
- Semi-scale stirred tank enzymatic bioleaching system for metal recovery from PCBs of end-of-life mobile phones: Process parameter optimization, predictive modelling, and economic assessment
Amber Trivedi, Subrata Hait
Waste Management, 2025 - Fungal bioleaching of metals from WPCBs of mobile phones employing mixed Aspergillus spp.: Optimization and predictive modelling by RSM and AI models
Amber Trivedi, Subrata Hait
Journal of Environmental Management, 2024
In the present study, optimization and prediction models for fungal bioleaching for effective metal extraction from waste printed circuit boards (WPCBs) of mobile phones were developed employing central composite design (CCD) of response surface methodology (RSM), and two artificial intelligence (AI) models, i.e., artificial neural network (ANN) and, support vector machine (SVM), respectively. Two continuous process parameters, such as pH (4–9) and pulp density (1–10 g/L), and the bioleaching approaches, viz., one-step and two-step, were experimentally optimized for the extraction of targeted metals, i.e., Cu, Ni, and Zn from WPCBs by mixed cultures of Aspergillus niger and Aspergillus tubingensis . Datasets were then used for predictive modelling using AI tools. Results showed that the highest simultaneous bioleaching of Cu, Ni, and Zn, with an extraction efficacy of about 86%, 51%, and 100%, respectively, achieved at an optimal condition of pH 5.7 and pulp density of 3 g/L following the two-step bioleaching approach. Effective metal extraction in the two-step approach could be attributed to the abundant production of organic acids with a content of about 16.3 g/L, 8.4 g/L, and 0.5 g/L of citric acid , oxalic acid , and malic acid , respectively. Further, the predictive modelling revealed that the ANN model was found to predict the fungal bioleaching responses more accurately as compared to the SVM model with R 2 values exceeding 0.96 for all targeted metals. This research demonstrates the applicability of the optimization and prediction models for efficient metal extraction from WPCBs using mixed Aspergillus spp. following the two-step approach. - Metal bioleaching from printed circuit boards by bio-Fenton process: Optimization and prediction by response surface methodology and artificial intelligence models
Amber Trivedi, Subrata Hait
Journal of Environmental Management, 2023 - Fungal Biotechnology for the Recovery of Critical Metals from E-waste: Current Research Trends and Prospects
Amber Trivedi, Kavita Kanaujia, Kumar Upvan, Subrata Hait
Development in E Waste Management Sustainability and Circular Economy Aspects, 2023
The resource recovery paradigm has focused attention towards the efficient critical metal recovery from e-waste to achieve a circular economy. Printed circuit board (PCB), an essential component of e-waste, is recognized as an ancillary metal reserve. Biohydrometallurgy or bioleaching technique with the integration of the hydrometallurgical process and the biotechnology employing microorganisms, mostly autotrophic bacteria, has emerged as an eco-friendly option for extractive metallurgy from PCBs. Fungal biotechnology for the critical metal recovery from PCBs has seen limited applications. However, the fungal biotechnology with the application of heterotrophic fungi like Aspergillus spp. and Penicillium spp. has the potential for efficient metal extraction from the PCBs. In this context, an attempt has been made to provide an overview of current research trends and future perspectives on fungal biotechnology for the recovery of critical metals from e-waste. Various fungal bioleaching processes and schemes with the impacts of process-associated factors for extractive metallurgy from PCBs have been briefly discussed. Further, the prevalent mechanisms and kinetics of fungi-assisted metal recovery from PCBs have been explored and summarized. Moreover, future prospects and SWOT analysis have been presented to assess the potential of fungal biotechnology to extract critical metals from PCBs. - Fungal biotechnology for urban mining of metals from waste printed circuit boards: A review
Amber Trivedi, Anusha Vishwakarma, Bhavini Saawarn, Byomkesh Mahanty, Subrata Hait
Journal of Environmental Management, 2022 - Influences of ferrous iron concentration and mixing speed on metal recovery from waste printed circuit boards using bio-Fenton process
Amber Trivedi, Subrata Hait
Journal of Environmental Chemical Engineering, 2021 - Influence of initial pH on bioleaching of selected metals from e-waste using Aspergillus niger
Amber Trivedi, Subrata Hait
Integrated Approaches Towards Solid Waste Management, 2021 - Column leaching of metals from PCB of end-of-life mobile phone using DTPA under oxidising condition
Nipoon Gupta, Amber Trivedi, Subrata Hait
Integrated Approaches Towards Solid Waste Management, 2021 - Material composition and associated toxicological impact assessment of mobile phones
Nipoon Gupta, Amber Trivedi, Subrata Hait
Journal of Environmental Chemical Engineering, 2021 - Hybrid bioleaching-an emerging technique for extraction of critical metals from WEEE
Kavita Kanaujia, Amber Trivedi, Kumar Upvan, Subrata Hait
Environmental Management of Waste Electrical and Electronic Equipment, 2021 - Bioleaching of Selected Metals from E-Waste Using Pure and Mixed Cultures of Aspergillus Species
Amber Trivedi, Subrata Hait
Energy Environment and Sustainability, 2020 - Extraction of Selected Metals from High-Grade Waste Printed Circuit Board Using Diethylene Triamine Penta-acetic Acid
Auchitya Verma, Amber Trivedi, Subrata Hait
Urban Mining and Sustainable Waste Management, 2020 - Applicability of Vermifiltration for Wastewater Treatment and Recycling
Bhavini, Kavita Kanaujia, Amber Trivedi, Subrata Hait
Earthworm Assisted Remediation of Effluents and Wastes, 2020
RECENT SCHOLAR PUBLICATIONS
- Semi-scale stirred tank enzymatic bioleaching system for metal recovery from PCBs of end-of-life mobile phones: Process parameter optimization, predictive modelling, and …
A Trivedi, S Hait
Waste Management 204, 114916 , 2025
2025
Citations: 3 - Fungal bioleaching of metals from WPCBs of mobile phones employing mixed Aspergillus spp.: optimization and predictive modelling by RSM and AI models
A Trivedi, S Hait
Journal of Environmental Management 349, 119565 , 2024
2024
Citations: 37 - Fungal Biotechnology for the Recovery of Critical Metals from E-waste: Current Research Trends and Prospects
A Trivedi, K Kanaujia, K Upvan, S Hait
Development in E-waste Management, 71-86 , 2023
2023
Citations: 1 - Metal bioleaching from printed circuit boards by bio-Fenton process: Optimization and prediction by response surface methodology and artificial intelligence models
A Trivedi, S Hait
Journal of Environmental Management 326, 116797 , 2023
2023
Citations: 44 - Fungal biotechnology for urban mining of metals from waste printed circuit boards: a review
A Trivedi, A Vishwakarma, B Saawarn, B Mahanty, S Hait
Journal of environmental management 323, 116133 , 2022
2022
Citations: 54 - Influences of ferrous iron concentration and mixing speed on metal recovery from waste printed circuit boards using bio-Fenton process
A Trivedi, S Hait
Journal of Environmental Chemical Engineering 9 (6), 106460 , 2021
2021
Citations: 13 - Column Leaching of Metals from PCB of End-of-Life Mobile Phone Using DTPA Under Oxidising Condition
N Gupta, A Trivedi, S Hait
Integrated Approaches Towards Solid Waste Management, 233-244 , 2021
2021 - Influence of Initial pH on Bioleaching of Selected Metals from e-Waste Using Aspergillus niger
A Trivedi, S Hait
Integrated Approaches Towards Solid Waste Management, 225-231 , 2021
2021
Citations: 3 - Material composition and associated toxicological impact assessment of mobile phones
N Gupta, A Trivedi, S Hait
Journal of Environmental Chemical Engineering 9 (1), 104603 , 2021
2021
Citations: 24 - Hybrid bioleaching—an emerging technique for extraction of critical metals from WEEE
K Kanaujia, A Trivedi, K Upvan, S Hait
Environmental Management of Waste Electrical and Electronic Equipment, 109-123 , 2021
2021
Citations: 5 - Applicability of Vermifiltration for Wastewater Treatment and Recycling
Bhavini, K Kanaujia, A Trivedi, S Hait
Earthworm Assisted Remediation of Effluents and Wastes, 3-17 , 2020
2020
Citations: 10 - Efficacy of Metal Extraction from Discarded Printed Circuit Board Using Aspergillus tubingensis
A Trivedi, S Hait
Bioresource utilization and bioprocess, 167-175 , 2020
2020
Citations: 17 - Extraction of selected metals from high-grade waste printed circuit board using diethylene triamine penta-acetic acid
A Verma, A Trivedi, S Hait
Urban Mining and Sustainable Waste Management, 49-57 , 2020
2020
Citations: 5 - Bioleaching of Selected Metals from E-Waste Using Pure and Mixed Cultures of Aspergillus Species
A Trivedi, S Hait
Measurement, analysis and remediation of environmental pollutants, 271-280 , 2019
2019
Citations: 27 - Classification of recyclables from E-waste stream using thermal imaging-based technique
GS Paulraj, H Subrata, T Amber, T Atul
ASCE India Conference 2017, 67-78 , 2017
2017
Citations: 4
MOST CITED SCHOLAR PUBLICATIONS
- Fungal biotechnology for urban mining of metals from waste printed circuit boards: a review
A Trivedi, A Vishwakarma, B Saawarn, B Mahanty, S Hait
Journal of environmental management 323, 116133 , 2022
2022
Citations: 54 - Metal bioleaching from printed circuit boards by bio-Fenton process: Optimization and prediction by response surface methodology and artificial intelligence models
A Trivedi, S Hait
Journal of Environmental Management 326, 116797 , 2023
2023
Citations: 44 - Fungal bioleaching of metals from WPCBs of mobile phones employing mixed Aspergillus spp.: optimization and predictive modelling by RSM and AI models
A Trivedi, S Hait
Journal of Environmental Management 349, 119565 , 2024
2024
Citations: 37 - Bioleaching of Selected Metals from E-Waste Using Pure and Mixed Cultures of Aspergillus Species
A Trivedi, S Hait
Measurement, analysis and remediation of environmental pollutants, 271-280 , 2019
2019
Citations: 27 - Material composition and associated toxicological impact assessment of mobile phones
N Gupta, A Trivedi, S Hait
Journal of Environmental Chemical Engineering 9 (1), 104603 , 2021
2021
Citations: 24 - Efficacy of Metal Extraction from Discarded Printed Circuit Board Using Aspergillus tubingensis
A Trivedi, S Hait
Bioresource utilization and bioprocess, 167-175 , 2020
2020
Citations: 17 - Influences of ferrous iron concentration and mixing speed on metal recovery from waste printed circuit boards using bio-Fenton process
A Trivedi, S Hait
Journal of Environmental Chemical Engineering 9 (6), 106460 , 2021
2021
Citations: 13 - Applicability of Vermifiltration for Wastewater Treatment and Recycling
Bhavini, K Kanaujia, A Trivedi, S Hait
Earthworm Assisted Remediation of Effluents and Wastes, 3-17 , 2020
2020
Citations: 10 - Hybrid bioleaching—an emerging technique for extraction of critical metals from WEEE
K Kanaujia, A Trivedi, K Upvan, S Hait
Environmental Management of Waste Electrical and Electronic Equipment, 109-123 , 2021
2021
Citations: 5 - Extraction of selected metals from high-grade waste printed circuit board using diethylene triamine penta-acetic acid
A Verma, A Trivedi, S Hait
Urban Mining and Sustainable Waste Management, 49-57 , 2020
2020
Citations: 5 - Classification of recyclables from E-waste stream using thermal imaging-based technique
GS Paulraj, H Subrata, T Amber, T Atul
ASCE India Conference 2017, 67-78 , 2017
2017
Citations: 4 - Semi-scale stirred tank enzymatic bioleaching system for metal recovery from PCBs of end-of-life mobile phones: Process parameter optimization, predictive modelling, and …
A Trivedi, S Hait
Waste Management 204, 114916 , 2025
2025
Citations: 3 - Influence of Initial pH on Bioleaching of Selected Metals from e-Waste Using Aspergillus niger
A Trivedi, S Hait
Integrated Approaches Towards Solid Waste Management, 225-231 , 2021
2021
Citations: 3 - Fungal Biotechnology for the Recovery of Critical Metals from E-waste: Current Research Trends and Prospects
A Trivedi, K Kanaujia, K Upvan, S Hait
Development in E-waste Management, 71-86 , 2023
2023
Citations: 1 - Column Leaching of Metals from PCB of End-of-Life Mobile Phone Using DTPA Under Oxidising Condition
N Gupta, A Trivedi, S Hait
Integrated Approaches Towards Solid Waste Management, 233-244 , 2021
2021
