NEHA SHUKLA
Verified @gmail.com
Assistant Professor and School of Mechanical and Materials Engineering
Neha Shukla IIT Mandi
EDUCATION
Ph.D., M.Tech., and B.Tech. in Metallurgical and Materials Engineering,
RESEARCH, TEACHING, or OTHER INTERESTS
Materials Science, Filtration and Separation, Waste Management and Disposal, Materials Chemistry
FUTURE PROJECTS
Recovery of rare earth elements from primary and secondary sources.
Applications Invited
14
Scopus Publications
123
Scholar Citations
6
Scholar h-index
6
Scholar i10-index
Scopus Publications
- Comparison of processing routes for recovery of rare earth elements from discarded fluorescent lamp phosphors
Neha Shukla and Nikhil Dhawan
Elsevier BV - Evaluation of Baking Process for Rare-Earth Recovery from Discarded Tube Lights Phosphor
Neha Shukla and Nikhil Dhawan
Springer Science and Business Media LLC - Microwave acid baking process for recovery of rare-earth concentrate from phosphor of end-of-life fluorescent lamps
Neha Shukla, Shrey Agrawal, and Nikhil Dhawan
Elsevier BV - Processing End-of-Life Tube Lights for Recovery of Rare Earth Oxides
Neha Shukla and Nikhil Dhawan
Springer Science and Business Media LLC - Investigation of Microwave and Thermal Processing of Electrode Material of End-of-Life Ni-MH Battery
Shaila Mir, Neha Shukla, and Nikhil Dhawan
Springer Science and Business Media LLC - Rapid microwave processing of discarded tubular lights for extraction of rare earth values
Neha Shukla and Nikhil Dhawan
Elsevier BV - Investigation of Different Processing Routes for Rare Earth Extraction from Discarded Tubular Lights
Neha Shukla and Nikhil Dhawan
Springer Science and Business Media LLC - Recycling of Discarded Tubular Lights for Recovery of Rare Earth Values
Himanshu Tanvar, Neha Shukla, and Nikhil Dhawan
Springer Science and Business Media LLC - Evaluation of alkali processing for the recycling of rare earth values from spent fluorescent lamps
Neha Shukla, Himanshu Tanvar, and Nikhil Dhawan
Politechnika Wroclawska Oficyna Wydawnicza
Phosphor samples collected after crushing and sieving of discarded fluorescent lamps comprise approximately 31 % rare earth elements in the form of Y1.90Eu0.10O3, Al11Ce0.67MgO19Tb0.33, and Al10.09Ba0.96Mg0.91O17: Eu2+ phase. Direct leaching and mechanical activation assisted leaching are incapable of recovering Ce, Tb values from the Al11Ce0.67MgO19Tb0.33 phase. Heat treatment with NaOH was found successful for dissociation of Ce, Tb phase via substitution of rare-earth ion by Na+ ion to form rare earth oxide and water-soluble NaAlO2. Y, Eu, Ce, and Tb values were recovered from heattreated mass in a two-step leaching process followed by recovery from the leach solution by oxalic acid precipitation. Over 95 % extraction rate was attained after heat treatment at 400 °C with 150 wt-% NaOH for 1 h. It was found that Y, Eu containing phase does not take part in the heat treatment process whereas the Ce, Tb phase undergoes a solid-state chemical reaction with NaOH via product layer diffusion model with 41.5 kJ/mol activation energy. Approximately 15 g mixed oxide (purity >95 %) of Y (79 %), Eu (7 %), Ce (5 %), and Tb (4 %) could be recovered from 100 units of discarded FLs. Microwave treatment of phosphor and NaOH (50 wt-%) yielded approximately 42 % Y, 100 % Eu, 65 % Ce, and 70 % Tb recovery in just 5 min. Approximately 9 g of REO and 5 g of cerium enriched leach residue were recovered from the microwave route within 5 min and depicted high microwave potential application in the recovery of Ce and Tb values from waste phosphor sample. - Electrochemical Fencing of Cr(VI) from Industrial Wastes to Mitigate Ground Water Contamination
N. Shukla, M. K. Harbola, K. Sanjay, and R. Shekhar
Springer Science and Business Media LLC - Tribological Behavior of a 0.33% C Dual-Phase Steel with Pre I/C Hardening and Tempering Treatment under Abrasive Wear Condition
Neha Shukla, Himadri Roy, and Bijay Kumar Show
Informa UK Limited
ABSTRACT The present study investigates the effect of prior hardening and tempering treatment on the microstructure, mechanical properties, and high-stress abrasive wear response of 0.33% carbon dual-phase (DP) steel. For this purpose, two different DP steels were produced by subjecting the as-received steel to hardening (DP-H) and hardening + tempering (DP-HT) treatments prior to the intercritical (I/C) annealing treatment. These steels along with the as-received steel were subsequently characterized by optical and scanning electron microscopy (SEM) metallography. Furthermore, tensile properties were evaluated along with microhardness measurements. The fracture surfaces of the failed tensile specimens were studied under SEM. Prior hardening and tempering treatment resulted in the formation of a nearly spherical martensite (aspect ratio = 1.2 ± 0.13) phase along with fine iron carbides in DP-HT steel. These fine iron carbides and spherical martensite act as the void nucleation sites in DP-HT steel. Therefore, DP-HT steel exhibits good ductility along with reasonable strength. On contrary, DP-H steel exhibits the presence of a fine elongated martensite (aspect ratio = 6.1 ± 3) phase, which causes poor ductility. Furthermore, abrasion tests were carried out at varying sliding distances at three different applied loads. Dual-phase treatment results in improved overall wear response. Moreover, tempering of prior hardened steel leads to improvement in wear resistance in DP-HT steel under all conditions studied in comparison with DP-H steel. This is attributed to higher strain hardening and greater resistance to particle scooping in DP-HT steel. - Effect of prior austempering heat treatment on the microstructure, mechanical properties and high-stress abrasive wear behaviour of a 0.33% C dual-phase steel
N. Shukla, H. Roy, and B. K. Show
Informa UK Limited
The present study investigates the effect of prior austempering heat treatment on the microstructure, mechanical property and high-stress abrasive wear response of 0·33% carbon dual-phase (DP) steel. DP steels were produced by intercritical annealing of the as-received steel (DP-AR) and of the steel subjected to prior austempering heat treatment (DP-AT). Prior austempering heat treatment results in the refinement of martensite phase in DP-AT steel, which is responsible for generation of less strain and microcracks in the vicinity of martensite phases. Therefore, this steel exhibits improvement in ductility with a marginal loss in strength. On the other hand, DP-AR steel shows coarse martensite phase which promotes strain accumulation and thereby generation of microcracks. These microcracks are found to be responsible for poor ductility in this steel. Furthermore, abrasion tests were carried out at varying sliding distances at 7 N applied load. DP treatments result in improved overall wear response. However, prior austempering heat treatment results in improvement in wear resistance in DP-AT steel at all sliding distances except at initial period. This is attributed to finer morphology of martensite and the absence of microcracks along with higher strain hardening in DP-AT steel. However, the improved wear resistance at initial period of DP-AR steel is attributed to considerably higher strain hardening index at low strain as compared to DP-AT steel. - Effect of Pre-intercritical Annealing Treatments on the Microstructure and Mechanical Properties of 0.33% Carbon Dual-Phase Steel
Neha Shukla, Suvajeet Das, Sumanta Maji, Subhro Roy Chowdhury, and Bijay Kumar Show
Springer Science and Business Media LLC - An electrochemical technique for minimizing soil and ground water contamination by heavy metals leached from solid industrial wastes
RECENT SCHOLAR PUBLICATIONS
- Comparison of processing routes for recovery of rare earth elements from discarded fluorescent lamp phosphors
N Shukla, N Dhawan
Minerals Engineering 187, 107759 2022 - Evaluation of baking process for rare-earth recovery from discarded tube lights phosphor
N Shukla, N Dhawan
Mining, Metallurgy & Exploration 39 (4), 1571-1586 2022 - Microwave acid baking process for recovery of rare-earth concentrate from phosphor of end-of-life fluorescent lamps
N Shukla, S Agrawal, N Dhawan
Journal of Cleaner Production 307, 127235 2021 - Processing end-of-life tube lights for recovery of rare earth oxides
N Shukla, N Dhawan
JOM 73, 1090-1102 2021 - Investigation of microwave and thermal processing of electrode material of end-of-life Ni-MH battery
S Mir, N Shukla, N Dhawan
JOM 73, 951-961 2021 - Rapid microwave processing of discarded tubular lights for extraction of rare earth values
N Shukla, N Dhawan
Process Safety and Environmental Protection 142, 238-249 2020 - Investigation of different processing routes for rare earth extraction from discarded tubular lights
N Shukla, N Dhawan
Journal of Sustainable Metallurgy 6, 269-280 2020 - Recycling of discarded tubular lights for recovery of rare earth values
H Tanvar, N Shukla, N Dhawan
JOM 72, 823-830 2020 - Evaluation of alkali processing for the recycling of rare earth values from spent fluorescent lamps
N Shukla, H Tanvar, N Dhawan
Physicochemical Problems of Mineral Processing 56 (4), 710-722 2020 - Tribological behavior of a 0.33% C dual-phase steel with pre I/C hardening and tempering treatment under abrasive wear condition
N Shukla, H Roy, BK Show
Tribology Transactions 59 (4), 593-603 2016 - Effect of prior austempering heat treatment on the microstructure, mechanical properties and high-stress abrasive wear behaviour of a 0 33% C dual-phase steel
N Shukla, H Roy, BK Show
Canadian Metallurgical Quarterly 55 (1), 13-22 2016 - Effect of pre-intercritical annealing treatments on the microstructure and mechanical properties of 0.33% carbon dual-phase steel
N Shukla, S Das, S Maji, SR Chowdhury, BK Show
Journal of Materials Engineering and Performance 24, 4958-4965 2015
MOST CITED SCHOLAR PUBLICATIONS
- Microwave acid baking process for recovery of rare-earth concentrate from phosphor of end-of-life fluorescent lamps
N Shukla, S Agrawal, N Dhawan
Journal of Cleaner Production 307, 127235 2021
Citations: 22 - Effect of pre-intercritical annealing treatments on the microstructure and mechanical properties of 0.33% carbon dual-phase steel
N Shukla, S Das, S Maji, SR Chowdhury, BK Show
Journal of Materials Engineering and Performance 24, 4958-4965 2015
Citations: 22 - Rapid microwave processing of discarded tubular lights for extraction of rare earth values
N Shukla, N Dhawan
Process Safety and Environmental Protection 142, 238-249 2020
Citations: 19 - Comparison of processing routes for recovery of rare earth elements from discarded fluorescent lamp phosphors
N Shukla, N Dhawan
Minerals Engineering 187, 107759 2022
Citations: 11 - Recycling of discarded tubular lights for recovery of rare earth values
H Tanvar, N Shukla, N Dhawan
JOM 72, 823-830 2020
Citations: 11 - Tribological behavior of a 0.33% C dual-phase steel with pre I/C hardening and tempering treatment under abrasive wear condition
N Shukla, H Roy, BK Show
Tribology Transactions 59 (4), 593-603 2016
Citations: 10 - Processing end-of-life tube lights for recovery of rare earth oxides
N Shukla, N Dhawan
JOM 73, 1090-1102 2021
Citations: 6 - Investigation of different processing routes for rare earth extraction from discarded tubular lights
N Shukla, N Dhawan
Journal of Sustainable Metallurgy 6, 269-280 2020
Citations: 6 - Investigation of microwave and thermal processing of electrode material of end-of-life Ni-MH battery
S Mir, N Shukla, N Dhawan
JOM 73, 951-961 2021
Citations: 5 - Evaluation of alkali processing for the recycling of rare earth values from spent fluorescent lamps
N Shukla, H Tanvar, N Dhawan
Physicochemical Problems of Mineral Processing 56 (4), 710-722 2020
Citations: 5 - Effect of prior austempering heat treatment on the microstructure, mechanical properties and high-stress abrasive wear behaviour of a 0 33% C dual-phase steel
N Shukla, H Roy, BK Show
Canadian Metallurgical Quarterly 55 (1), 13-22 2016
Citations: 4 - Evaluation of baking process for rare-earth recovery from discarded tube lights phosphor
N Shukla, N Dhawan
Mining, Metallurgy & Exploration 39 (4), 1571-1586 2022
Citations: 2
RESEARCH OUTPUTS (PATENTS, SOFTWARE, PUBLICATIONS, PRODUCTS)
Patent Granted
Neha Shukla, Nikhil Dhawan, and Shrey Agrawal from the Indian Institute of Technology Roorkee have developed a method using microwave acid baking to recover rare earth oxides from fluorescent lamp phosphor. This method is patented under number 513227 with application number 202211037582A (Indian Institute of Technology Roorkee)and is dated 30/06/2022.