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Author: search.filters.author.Singh Kshitij, RBHas files: Yes

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    TARGETED ELIMINATION OF HEAVY METALS FROM INDUSTRIAL WASTEWATER: SYNERGISTIC EFFECT OF NANO METAL OXIDES (Article)
    (Taiwan Institute of Chemical Engineers, 2025-01) Swathika, Manoharan; Andal, Narasimhan Muthulakshmi; Dharani, Sivasubramaniam; Singh, Jay; Pandey Shyam, S; Singh Kshitij, RB; Natarajan, Arunadevi
    Unprocessed solutions containing hazardous heavy metals, even in trace amounts, exert a detrimental impact on human health and pose a threat to biodiversity, hydrosphere ecosystems, and communities. Liquid waste containing heavy metals has been found to pose a notable threat to the environment.In this study, nano NiO, MnO, and NiMnO3 were synthesized and characterized systematically. The nano metal oxides were used as an adsorbent for the elimination of heavy metals from industrial wastewater.In view of this, the efficacy of synthesized metal oxides as potential sorbents is investigated to chelate Pb (II) ions which are present as one of the major contaminants of industrial effluents. Three adsorption systems viz., Pb(II) – NiO, Pb(II) - MnO, and Pb(II) – NiMnO3 mixture were experimentally verified by Batch equilibration and fixed bed column methods. Pre and post-run sorbent materials are characterized using SEM and EDAX analyses to examine the appropriate changes. A trial fixed bed column was run for the effluent sample, wherein 98% Pb (II) removal was registered against 96 % as observed in Batch mode. This emphasizes the potential of the synthesized metal oxides as efficient sorbents for addressing heavy metal contamination in industrial wastewater.
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    SYNTHESIS AND ADVANCES OF SMART HETEROATOM-SITED COATINGS FOR ANTICORROSION APPLICATIONS (Article)
    (Taiwan Institute of Chemical Engineers, 2025-01) Swathika, M; Chandran, Sharmila; Singh Kshitij, RB; Singh, Ravindra Pratap; Pandey Shyam, S; Natarajan, Arunadevi
    Recently, there has been a significant interest in nanocomposites with porous structure, excellent thermal stability, and stiffness. The corrosion resistance behavior of epoxy resin-based Ni and Co metal oxides nanocomposite is reported here. The anti-corrosion abilities of mild steel substrates were investigated in different media like bore water, soil, and bacteria. Over 120 days, the inhibitory efficiency of the target compound was tested.The corrosion process was studied under a UV chamber at different wavelengths at 254 nm, 365 nm, and at visible region respectively. The bacterial study was carried out against the gram (+) and gram (-) on the mild steel specimen against Staphylococcus aureus and Escherichia coli. Morphological studies show the effective nanocomposite encapsulation in epoxy resin. The powder XRD method divulges the structure, and the dispersity of the epoxy layer as projected by scanning electron microscopy. Anti-corrosion properties were determined by electrochemical impedance spectroscopy (EIS) and polarization methods.The results display nano CoO has improved anti-corrosion characteristics compared to nano NiO. The metal nano coating effectively protects mild steel due to barrier properties towards ions responsible for rusting, demonstrating its appropriateness as a next-generation anti-corrosive coating for a sustainable environment.