Sandip Haldar
Verified @jisgroup.org
Associate Professor, BSHU (Physics)
Asansol Engineering College
RESEARCH INTERESTS
Ab initio pseudopotential and nano materials
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Avik De, Asim De, Sandip Haldar, and Debasish Sarkar
Springer Science and Business Media LLC
Ranjita Sinha and Sandip Haldar
Springer Science and Business Media LLC
Tanima Nandi, Avik De, Santu Sarkar, and Sandip Haldar
Elsevier BV
R. Sinha and Sandip Haldar
Springer Singapore
Avik De, Tanima Nandi, Santu Sarkar, and Sandip Haldar
Springer Singapore
Tanima Nandi, Avik De, Santu Sarkar, and Sandip Haldar
Elsevier BV
T. Nandi, A. De, and S. Haldar
Elsevier BV
Avik De, Asim K. De, Gouri Sankar Panda, and Sandip Haldar
Wiley
In present work, nano zero valent iron (nZVI) particles were synthesized by reduction of FeSO4 by NaBH4 in presence of chelating ligand EDTA (nZVI) in N2 environment. It was then Ball milled to reduce particle size. Particle characterization was performed byX ray diffraction (XRD), Fourier Transformed Infrared spectroscopy (FTIR), dynamic light scattering (DLS) and field emission scanning electron microscopy (FESEM), Brunauer‐Emmett‐Teller (BET) surface area measurement, high resolution transmission electron microscopy (HRTEM), and energy dispersive X ray spectroscopy (EDX).Catalysts so prepared were applied to degrade coke oven plant wastewater containing Phenol. Optimum condition of dephenolization process was: catalyst concentration: 0.05 g L−1, pH = 3, Phenol: hydrogen peroxide (50%) concentration =1:14 (Stoichiometric ratio), temp = 30–35°C. Reaction volume = 100 mL. It has been found that phenol containing coke oven plant can be effectively degraded up to 70–75% in presence of newly developed catalyst. COD (Chemical Oxygen demand) reduction was found to be nearly 33%. Both are within 1‐h duration. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 1700–1708, 2017
S Haldar, S Mondal, Amit Rai, and Chandra Singh
CRC Press
Avik De, Asim K. De, Gouri Sankar Panda, and Sandip Haldar
Informa UK Limited
AbstractIn the present work, iron-based nanoparticles were synthesized by sol–gel method (iron oxide I), modified co-precipitation method (iron oxide II), reduction of FeSO4 by NaBH4 (nano zero-valent iron I, nZVI I), and reduction of FeSO4 by NaBH4 in presence of chelating ligand EDTA (nZVI II) for use as a catalyst for degradation of phenol. Particle characterization was performed for each set of samples by UV–vis spectra, X-ray diffraction, Fourier transformed infrared spectroscopy (FTIR), dynamic light scattering (DLS), and field emission scanning electron microscopy (FESEM). FESEM was performed with iron oxide II and particle size was found to be 36.5 nm. The average particle diameter obtained for nZVI was in the range of 141–150 nm. nZVI(II) has been found to be most efficient with respect to high percentage degradation of phenol in an hour under optimum operating condition at room temperature which were as follows: catalyst concentration = 0.05 g/l, pH 3, phenol:hydrogen peroxide (50%) concentratio...
Sudhangshu Chakraborty, A. Basu, and S. Haldar
American Scientific Publishers