Sarat Chandra Mohanty’s research while affiliated with Ayush & Health Sciences University Chhattisgarh and other places

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Publications (8)


Power Quality Issues in Power System & Load Voltage Compensation for Boosting Performance
  • Conference Paper

July 2024

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5 Reads

Anu G Pillai

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Vijayalaxmi Biradar

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Sarat Chandra Mohanty

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[...]

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Rupal Gupta


Figure 1: The workflow of the proposed INM-WTF
Figure 2: Workflow of the proposed Photocatalysis The decomposition process is initiated by the illumination of a semiconductor photocatalyst beneath visible light illumination. When powerful photons are absorbed by atoms in the valence band, positively charged holes (h) are generated. These holes then promote the excitation of the conduction spectrum. Superoxide (-O-) anion free radicals, known for their robust oxidizing properties, are generated in the band that conducts electricity due to electron interactions with electron-acceptor groups of 0. The hydroxyl ion radical (OH) is caused by the interaction of water molecules with a positively charged hole. Both radicals are responsible for the breakdown of hazardous or polluted organic pigments, as shown in Equations (2) to (6). í µí±ƒí µí±í µí° ¶ + ℎí µí±£ (í µí±) = í µí±’ − í µí° ¶í µí°µ + ℎ + í µí±‰ í µí°µ (2) í µí±ƒí µí±í µí° ¶(í µí±’ − ) + í µí±‚ 2 = í µí±‚ 2− (3) í µí±ƒí µí±í µí° ¶(ℎ + ) + í µí°» 2 í µí±‚ = í µí±‚í µí°» + í µí°» + (4) í µí°· + í µí±‚í µí°» = í µí°· í µí±í µí±Ÿ (5) í µí°· + í µí±‚ 2 = í µí°· í µí±í µí±Ÿ (6)
Figure 3: Pollutant removal efficiency and permeate flux analysis Figure 3 displays the outcomes of pollutant removal efficiency (%) and permeate flow (L/m²h) for a range of water treatment techniques, namely PVA/PES-CNM, NCM-CC, CNM, TNP-PSF, HTZN, MNM, and the suggested INM-WTF. The INM-WTF exhibited a notably superior pollutant removal effectiveness of 96.5%, outperforming other methodologies. It had the most considerable permeate flux, reaching a value of 395 L/m²h.
Figure 4: Adsorption capacity and photocatalytic degradation rate analysis Figure 4 presents the results of the adsorption capacity (mg/g) and photocatalytic degradation rate (%/hour) for a range of water treatment techniques, including PVA/PES-CNM, NCM-CC, CNM, TNP-PSF, HTZN, MNM, and the suggested INM-WTF. INM-WTF had the maximum adsorption capacity of 155 mg/g, surpassing other methodologies. It exhibited the highest rate of photocatalytic destruction, reaching 85% per hour. The INM-WTF shows significant progress, manifesting a noteworthy enhancement of 13 mg/g in adsorption capacity and a 3% per hour increase in photocatalytic degradation rate compared to the most closely performing technique, NCM-CC. The findings highlight the substantial influence of the proposed study on augmenting the efficiency of pollutant removal and the kinetics of treatment.
Figure 5: Membrane filtration efficiency and water quality compliance analysis Figure 5 presents the results about the effectiveness of membrane filtration (%) and the compliance of water quality (µg/L) for several water treatment techniques, namely PVA/PES-CNM, NCM-CC, CNM, TNP-PSF, HTZN, MNM, and the suggested INM-WTF. INM-WTF exhibited a membrane filtering efficiency of 97.5%, outperforming other methodologies. It also demonstrated outstanding water quality by attaining the lowest compliance level of 1.7 µg/L. The INM-WTF shows significant progress, exhibiting an enhancement of 0.4% in membrane filtration efficiency and 0.1 µg/L in water quality compliance compared to the most similar approach, NCM-CC. The findings highlight the
Developing Innovative Nanomaterials as Adsorbents for Water Treatment and their Environmental Impact
  • Article
  • Full-text available

December 2023

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86 Reads

Migration Letters

Water treatment is paramount in tackling the increasingly pressing environmental issues associated with water contamination. The present study investigates the progression of novel nanomaterials as exceptionally effective adsorbents for water purification while also evaluating their potential ecological consequences. The significance of water treatment cannot be overstated when it comes to protecting the environment and ensuring public health. This is due to the intricate and varied pollutants that are brought into water sources from many sources of waste, such as household, industrial, and environmental concerns. Adsorbents are crucial in capturing and immobilizing contaminants, making them essential instruments in this particular setting. Nanomaterials have garnered attention as potential adsorbents owing to their notable specific surface area and adjustable features. These materials possess a large surface area, reactivity, and configurable surface chemistry, rendering them intriguing candidates for adsorption applications. This manuscript presents the Innovative Nanoparticles for Water Treatment Framework (INM-WTF). This innovative approach utilizes state-of-the-art nanoparticles to improve water treatment processes' efficiency significantly. The outcomes of the INM-WTF experiment include the following parameters: Pollutant Removal Efficiency of 96.5%, Permeate Flux of 395 L/m²h, Adsorption Capacity of 155 mg/g, Photocatalytic Degradation Rate of 85%/hour, Membrane Filtration Efficiency of 97.5%, and Water Quality Compliance of 1.7 µg/L. The results indicate significant progress in water treatment capabilities, emphasizing nanomaterials' potential to tackle environmental issues, enhance water quality, and guarantee adherence to rigorous regulatory benchmarks.

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Measured values of response parameters Experiment MRR(10 -3 gm/min) TWR (10 -3 gm/min) SR (R a ) in microns
Criteria weights
Normalized matrix
Optimizing process parameters of die sinking EDM in AISI D2 steel by using TOPSIS using EDM oil as dielectric

February 2021

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45 Reads

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1 Citation

IOP Conference Series Materials Science and Engineering

A prodigious research work is being effectuated to endorse the optimal machining parameters while entailing present day machining techniques to bring outclassy products. This research work insisted on suggesting the optimum process parameters of die sinking EDM with 8mm diameter copper electrode during machining AISI D2 steel using TOPSIS.Taguchi’s L9 Orthogonal Array method was adopted to design 9 experiments in total and Pulse on time (T on ), Servo voltage (SV) and Peak current (I P ) are chosen as input parameters. Three levels of each parameter were selected for designing the experimentation. EDM oil which is a synthetic oil is selected as dielectric and all the values of Material Removal Rate (MRR), Tool Wear Rate (TWR) and Surface Roughness (SR) for each experiment were noted as the output responses. Analysis of Variance (ANOVA) was done to recommend the impact of each input parameter on output responses. Analytical Hierarchy Process (AHP) was used to select the weightage of each response and then Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) which is a multi-criteria decision analysis method, was accompanied for determination of ideal parameters for machining AISI D2 steel. Eventually it is descried that the amalgamation of level 3 of pulse on time, level 3 of Peak Current and level 3 of servo voltage propounds the optimum result.


Experimental Setup
Measured values of response parameters
S/N ratios of different experiments for output responses
Normalized matrix
GRA grade and their rank for response parameters
Parametric Optimization of Die Sinking EDM in AISI D2 Steel considering Canola oil as Dielectric using TOPSIS and GRA

February 2021

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210 Reads

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7 Citations

IOP Conference Series Materials Science and Engineering

A colossal research work is being consummated to propose the optimal machining parameters while necessitating current machining techniques to attain elegant products. This research work foregrounded the optimum process parameters of die sinking EDM with 8mm diameter copper electrode during machining AISI D2 steel. Taguchi’s L9 OA method was adopted to design 9 experiments in total and Pulse on time (T on ), Servo voltage (SV) and Peak current (IP) are chosen as input parameters. Three levels of each parameter were selected for designing the experimentation. A natural vegetable oil named Canola oil which is an extract from Canola seeds is taken as dielectric and all the values of Material Removal Rate (MRR), Tool Wear Rate (TWR) and Surface Roughness (SR) for each experiment were noted as the output responses. Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) and Grey Relational Analysis (GRA) which are two Multi-Criteria Decision Making (MCDM) methods were accompanied for determination of ideal parameters for machining AISI D2 steel. Ultimately it is espied that the coalescence of level 3 of pulse on time, level 2 of Peak Current and level 2 of servo voltage propounds the optimum result by performing TOPSIS and GRA.


Figure 1.Effect of VD time on flexural (a) stress-strain plots, (b) strength and (c) modulus of MWCNT(0.1%)-GE composite.
Figure 2.Impact of CNT content in GE composite on its flexural (a) stress-strain behavior and (b) Modulus and strength. (C) SEM image showing dispersion of MWCNTs in MWCNT (0.1 wt. %)-GE composite. AfterobtaininganoptimumVDtime,impactofMWCNTcontentontheflexuralpropertiesof the MWCNT-GE composite was studied. The variation in flexural performance for 0.1wt % and 0.3wt % of MWCT in GE composite are shown in figure 2. Both of these composites were vacuum degassed for 12 hours during the matrix modification process in the fabrication of MWCNTGElaminates.Additionof0.3wt%MWCNTinGEcompositeenhancedtheflexural performance but not up to the extent of as observed for 0.1wt % MWCNT in GE composite. The agglomeration of MWCNT can be attributed to this decrement in positive nano-modification effect in GEcomposite.
Effect of Post-mixing Vacuum Degassing time of MWCNT/Epoxy Mixture and MWCNT Content on the Flexural Behaviour of MWCNT Filled Glass/Epoxy Composite

February 2021

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69 Reads

IOP Conference Series Materials Science and Engineering

In the current examination, adjustment of epoxy resin has been conducted by multi-walled carbon nanotube (MWCNT) by a consecutive cycle containing stirring, sonication and followed by vacuum degassing (VD). Accentuation has been centred on the impact of I) VD time (4, 12, 18 and 50 hours) of MWCNT/epoxy mixture and ii) MWCNT content in the epoxy resin (0.1 and 0.3 wt. % w.r.t epoxy) on flexural properties of MWCNT installed glass/epoxy-composite (MWCNT- GE) concerning the control glass/epoxy (GE) composites. Greatest flexural quality in the MWCNT (0.1%)- GE composite was acquired with 18 hours VD (27% higher than the control GE), whereas modulus was found to be maximum with 12 hours VD (nearly22% higher than control GE). Incorporation of a higher MWCNT content (0.3wt. %)resulted in a poor flexural performance due to agglomeration as confirmed from scanning electron microscope(SEM).

Citations (2)


... Powdermixed EDM and Nanopowder-mixed EDM have been developed as advanced methods for improving machining performance in difficult-to-cut materials, such as Al-Z-Mg composites reinforced with Si3N4, particularly when using nickel-coated and uncoated brass electrodes. The process of micro-hole machining, taking into account variables like pulse on time, voltage, input current, and capacitance, has demonstrated significant effects on MRR and EWR, with SEM analysis providing valuable insights into surface morphology alterations (Jana et al. 2021). Taguchi's L9 orthogonal array and multi-criteria decision-making techniques, such as TOPSIS and grey relational analysis, were used in this study to improve die-sinking EDM settings for AISI D2 steel machining using a copper electrode. ...

Reference:

Experimental Analysis of EDM Parameters on D2 Die Steel Using Nano-aluminum Composite Electrodes
Parametric Optimization of Die Sinking EDM in AISI D2 Steel considering Canola oil as Dielectric using TOPSIS and GRA

IOP Conference Series Materials Science and Engineering

... The Taguchi-DEAR method has been used for non-traditional machining processes such as in waterjet machining [13] and in electrical discharge machining [14,15]. The TOPSIS method has been applied for drilling [16,17], milling [18,19], turning [20,21], EDM [22][23][24], and abrasive waterjet machining [25], etc. The MARCOS method was used for turning, milling and drilling processes [26]. ...

Optimizing process parameters of die sinking EDM in AISI D2 steel by using TOPSIS using EDM oil as dielectric

IOP Conference Series Materials Science and Engineering