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Browsing by Author "Acharya, S."

Browsing by Author "Acharya, S."

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  • A RAPID TITRIMETRIC DETERMINATION OF D2EHPA AND M2EHPA 
    Rao, Y.R.; Acharya, S. (Hydrometallurgy, 32(1), 1993: 129-135)
    The use of impure D2EHPA in solvent extraction of metal ions leads to many process problems. Analysis of the quality of D2EHPA before use is warranted. The titrimetric estimation of D2EHPA containing M2EHPA of various ...
  • ACID PRESSURE LEACHING OF NICKEL-CONTAINING CHROMITE OVERBURDEN IN THE PRESENCE OF ADDITIVES 
    Das, G.K.; Acharya, S.; Anand, S.; Das, R.P. (Hydrometallurgy, 39(1-3), 1995: 117-128)
    Leaching of beneficiated lateritic chromite overburden sample was carried out at 250-260 degrees C with 0.3-0.4 g H2SO4/g of material. It was observed that in laboratory scale experiments, similar to 67% nickel could be ...
  • Characterisation and acid pressure leaching of various nickel-bearing chromite overburden samples 
    Das, G.K.; Anand, S.; Acharya, S.; Das, R.P. (Hydrometallurgy, 44(1-2), 1997: 97-111)
    In an earlier study it was found that additives were required for improving nickel recoveries from preconcentrated nickel-containing chromite overburden. With a view to confirming the response, five chromite overburden ...
  • Copper Refining Electrolyte and Slime Processing - Emerging Techniques 
    Acharya, S. (Harnessing Of Nonferrous Minerals, Metals And Wastes, 828, 2014: 93-115)
    Copper electro-refining (Cu-ER) is the principal method for producing >70% of high or 99.97% pure copper cathodes from 97-99% pure blister/fire refined-scrap copper anodes. While the inert and most of less soluble impurities ...
  • Coupling of charge carriers with magnetic entropy for power factor enhancement in Mn doped Sn1.03Te for thermoelectric applications 
    Acharya, S.; Anwar, Sharmistha; Mori, T.; Soni, A. (Journal Of Materials Chemistry C, 6(24), 2018: 6489-6493)
    Despite being a prospective thermoelectric (TE) material, SnTe has limited applicability due to the very high hole' concentration arising from Sn' vacancies. Engineering of multiple valence bands with the addition of extra ...
  • FORMATION AND DECOMPOSITION OF AMMONIUM JAROSITE IN SULPHATE MEDIA AT ELEVATED TEMPERATURES 
    Anand, S.; Acharya, S.; Das, G.; Das, R.P. (Ichm '92 - Proceedings Of The Second International Conference On Hydrometallurgy, Vols 1 And 2, 1992: 707-715)
  • Influence of nickel boride addition on sintering behaviour and mechanical properties of TiC-Ni based cermets 
    Acharya, S.; Debata, M.; Acharya, T.S.; Acharya, P.P.; Singh, S.K. (Journal Of Alloys And Compounds, 685, 2016: 905-912)
    TiC-Ni based cermets were prepared by vacuum sintering at 1200 degrees C, 1300 degrees C and 1400 degrees C. NiB (0, 10, 20 wt%) was added to improve sintering activity by creating a liquid phase and enhance the densification. ...
  • Insights from a Pan India Sero-Epidemiological survey (Phenome-India Cohort) for SARS-CoV2 
    Naushin, S.; Sardana, V.; Ujjainiya, R.; Bhatheja, N.; Kutum, R.; Bhaskar, A.K.; Pradhan, S.; Prakash, S.; Khan, R.; Rawat, B.S.; Tallapaka, K.B.; Anumalla, M.; Chandak, G.R.; Lahiri, A.; Kar, S.; Mulay, S.R.; Mugale, M.N.; Srivastava, M.; Khan, S.; Srivastava, A.; Tomar, B.; Veerapandian, M.; Venkatachalam, G.; Vijayakumar, S.R.; Agarwal, A.; Gupta, D.; Halami, P.M.; Peddha, M.S.; Sundaram, G.M.; Veeranna, R.P.; Pal, A.; Agarwal, V.K.; Maurya, A.K.; Singh, R.K.; Raman, A.K.; Anandasadagopan, S.K.; Karuppanan, P.; Venkatesan, S.; Sardana, H.K.; Kothari, A.; Jain, R.; Thakur, A.; Parihar, D.S.; Saifi, A.; Kaur, J.; Kumar, V.; Mishra, A.; Gogeri, I.; Rayasam, G.; Singh, P.; Chakraborty, R.; Chaturvedi, G.; Karunakar, P.; Yadav, R.; Singhmar, S.; Singh, D.; Sarkar, S.; Bhattacharya, P.; Acharya, S.; Singh, V.; Verma, S.; Soni, D.; Seth, S.; Vashisht, S.; Thakran, S.; Fatima, F.; Singh, A.P.; Sharma, A.; Sharma, B.; Subramanian, M.; Padwad, Y.S.; Hallan, V.; Patial, V.; Singh, D.; Tripude, N.V.; Chakrabarti, P.; Maity, S.K.; Ganguly, D.; Sarkar, J.; Ramakrishna, S.; Kumar, B.N.; Kumar, K.A.; Gandhi, S.G.; Jamwal, P.S.; Chouhan, R.; Jamwal, V.L.; Kapoor, N.; Ghosh, D.; Thakkar, G.; Subudhi, U.; Sen, P.; Chaudhury, S.R.; Kumar, R.; Gupta, P.; Tuli, A.; Sharma, D.; Ringe, R.P.; Amarnarayan, D.; Kulkarni, M.; Shanmugam, D.; Dharne, M.S.; Dastager, S.G.; Joshi, R.; Patil, A.P.; Mahajan, S.N.; Khan, A.H.; Wagh, V.; Yadav, R.K.; Khilari, A.; Bhadange, M.; Chaurasiya, A.H.; Kulsange, S.E.; Khairnar, K.; Paranjape, S.; Kalita, J.; Sastry, N.G.; Phukan, T.; Manna, P.; Romi, W.; Bharali, P.; Ozah, D.; Sahu, R.K.; Babu, E.V.; Sukumaran, R.; Nair, A.R.; Valappil, P.K.; Puthiyamadam, A.; Velayudhanpillai, A.; Chodankar, K.; Damare, S.; Madhavi, Y.; Aggarwal, V.V.; Dahiya, S.; Agrawal, A.; Dash, D.; Sengupta, S. (Elife, 10, 2021: e66537)
    To understand the spread of SARS-CoV2, in August and September 2020, the Council of Scientific and Industrial Research (India) conducted a serosurvey across its constituent laboratories and centers across India. Of 10,427 ...
  • IRON REJECTION THROUGH JAROSITE PRECIPITATION DURING ACID PRESSURE LEACHING OF ZINC LEACH RESIDUE 
    Acharya, S.; Anand, S.; Das, R.P. (Hydrometallurgy, 31(1-2), 1992: 101-110)
    Electrolytic zinc processes produce leach residues containing 15-18% zinc and 27-37% iron. In India large quantities of such residues are stock-piled at zinc plants. During leaching of a typical sample of stock-piled residue ...
  • Kinetics and mechanism of oxidation of DL-methionine by Keggin-type 12-tungstocobaltate(III) in aqueous acetic acid medium 
    Satpathy, P.K.; Dash, G.C.; Acharya, S.; Mohanty, P. (Journal Of The Indian Chemical Society, 83(9), 2006: 891-894)
    The kinetics of the reaction of DL-methionine with 12-tungstocobaltate(III) has been studied over the range of 8.4 <= 10(3) [DL-methionine] <= 14.0, 3.0 <= pH <= 5.0 and 20 <= T <= 35 degrees C in aqueous acetic acid medium. ...
  • Kinetics and mechanism of the reaction of hydroxopentaaquarhodium(III) ion with L-proline in aqueous solution 
    Dash, G.C.; Dash, B.; Satpathy, P.K.; Acharya, S.; Mohanty, P. (Journal Of The Indian Chemical Society, 84(3), 2007: 280-282)
    The kinetics of the reaction of L-proline (H2L+) with hydroxopentaaquarhodium(III) has been studied over the range 2.48 <= 10(3) [H2L+] <= 7.44, 3.5 <= pH <= 4.5, 50 degrees <= t <= 70 degrees at I = 0.1 mol dm(-3), (NaClO4). ...
  • KINETICS AND MECHANISM OF THE REDUCTIVE AMMONIA LEACHING OF OCEAN NODULES BY MANGANOUS ION 
    Acharya, S.; Das, R.P. (Hydrometallurgy, 19(2), 1987: 169-186)
  • KINETICS OF COPPER PERMEATION THROUGH LIX64N KEROSENE SUPPORTED LIQUID MEMBRANE 
    Sarangi, K.; Acharya, S.; Sarma, P.V.R.B.; Das, R.P. (Transactions Of The Indian Institute Of Metals, 43(5), 1990: 274-282)
    Extraction of copper using LIX64N-kerosene SLM was studied. Membrane diffusion constant for the copper-LIX64N complex was determined to be 3.35x10-11 m2s-1 from the dialysis experiment. The parameters studied for determination ...
  • Kinetics of iron precipitation at elevated temperatures from Fe(III)-H2SO4-(NH4)(2)SO4 system 
    Das, G.K.; Acharya, S.; Anand, S.; Das, R.P. (Transactions Of The Indian Institute Of Metals, 49(6), 1996: 803-815)
    In the present work a systematic study has been reported on the precipitation of iron from Fe(III)-H2SO4-(NH4)(2)SO4 system at elevated temperatures 150-250 degrees C. The effects of various parameters such as time, acid, ...
  • Oxidation of L-cysteine by Fe-III-1,10-phenanthroline complex: A kinetic study 
    Panda, S.; Acharya, S.; Mohanty, P. (Journal Of The Indian Chemical Society, 84(8), 2007: 813-815)
    Electron transfer reaction of iron(III)-1,10-phananthroline by L-cysteine has been studied spectrophotometrically over the range 1.1 <= pH <= 2.26,25 <= t <= 40 degrees C, 0.1 <= I <= 0.2,4.5 <= 10(5) [Fe-III]T <= 6.5, 1.5 ...
  • PREPARATION AND CHARACTERIZATION OF MAGNESIUM-SULFATE HEPTAHYDRATE FROM KIMBERLITE TAILINGS 
    Reddy, B.R.; Acharya, S.; Anand, S.; Das, R.P. (Journal Of Thermal Analysis, 37(5), 1991: 945-951)
    Weathered Kimberlite tailings of Panna Diamond Mines were characterised by DTA and XRD techniques. The XRD pattern shows the presence of serpentine, quartz, calcite, hematite, magnetite and anatase phases. DTA curve indicates ...
  • PREPARATION AND DECOMPOSITION OF AMMONIOJAROSITE AT ELEVATED-TEMPERATURES IN H2O-(NH4)(2)SO4-H2SO4 MEDIA 
    Das, G.K.; Anand, S.; Acharya, S.; Das, R.P. (Hydrometallurgy, 38(3), 1995: 263-276)
    Ammoniojarosite samples were prepared at 368 and 483 K. The XRD patterns of these samples were identical, showing sharp peaks corresponding to d lines of reported ammoniojarosite. TG-DTA curves show that the decomposition ...
  • REDUCTIVE AMMONIA LEACHING OF MANGANESE NODULES BY THIOSULFATE 
    Acharya, S. (Metallurgical Transactions B-Process Metallurgy, 22(2), 1991: 259-261)
  • SEPARATION OF D2EHPA AND M2EHPA 
    Acharya, S.; Nayak, A. (Hydrometallurgy, 19(3), 1988: 309-320)
  • SILVER LOSSES FROM AMMONIACAL SOLUTIONS ON COMPLEX SULFIDE AND CHALCOPYRITE AMMONIA LEACH RESIDUES 
    Acharya, S.; Anand, S.; Das, R.P. (International Journal Of Mineral Processing, 20(3-4), 1987: 229-239)

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