Dr. Janhavi M Karekar

@git.edu

Dr. Janhavi M Karekar


                  Download Compact PDF  
https://researchid.co/vmkarekar

EDUCATION

M.Sc., M. Phil., Ph.D.
4

Scopus Publications

24

Scholar Citations

3

Scholar h-index

1

Scholar i10-index

Scopus Publications

  • Adsorption studies of fluoride on weak base anion exchangers and surface modified strong acid cation exchangers in aqueous medium
    Janhavi M. Karekar, Ramesh T. Katamble, Sanjaykumar V. Divekar
    Desalination and Water Treatment, 2020
  • Removal of thiocyanate from water by using weak base microporous resins of different matrix structure
    Janhavi M. Karekar, Sanjaykumar V. Divekar
    Desalination and Water Treatment, 2019
  • Adsorption studies of chromium (VI) on weak base resins Tulsion A-10X (MP) and Amberlyst A-21 (MP) in aqueous and mixed media
    Janhavi M. Karekar, Sanjaykumar V. Divekar
    Desalination and Water Treatment, 2017
    The adsorption studies of chromium (VI) in aqueous and aqueous-organic solvents mixed media is carried out using weak base anion exchangers Tulsion A-10 X (MP) and Amberlyst A-21 (MP) by batch process. Adsorption of chromium (VI) is investigated by varying contact time, chromium (VI) concentration, resin dosage, temperature and pH. The effect of solvent on adsorption of chromium (VI) was also studied at different solvent compositions. The percentage of chromium (VI) removal was found faster on Amberlyst A-21 (MP) than Tulsion A-10X (MP) due to the difference in resin structure. However, the percentage removal of chromium (VI) is up to 99% on both the resins. Chromium (VI) removal is maximum in the pH range 2.0 to 5.0 with a resin dosage of 150 mg and initial chromium (VI) concentration 350 mg·L–1. The equilibrium sorption data was analysed with Freundlich and Langmuir isotherms. The data fits well in Langmuir model indicating monolayer adsorption of chromium (VI) on the resin. Adsorption process follows pseudo-second order kinetic equation and is controlled by intra-particle diffusion. The desorption study indicates that NaOH is better desorbent for resin Amberlyst A-21(MP) than Tulsion A-10X(MP). Thermodynamic parameters were evaluated by applying Van’t Hoff equation to the adsorption process.
  • Effect of resin structure and resin fixed ion on selectivity of perchlorate and nitrate in aqueous and mixed media
    Ramesh T. Katamble, Janhavi M. Karekar, Sanjaykumar V. Divekar
    Asian Journal of Chemistry, 2017
    Asian Journal of Chemistry, a Multidisciplinary Chemistry Journal is an Peer Reviewed International Journal and publishes from India. The journal has been established since January 1989 on a firm foundation of International Quality Research. This Journal encompasses all branches of chemistry and its sub – disciplines like Pharmaceutical, Biological activities of Synthetic Drugs, Environmental Chemistry, Biochemistry, Polymer Chemistry, Petroleum Chemistry, and Agricultural Chemistry, etc.

RECENT SCHOLAR PUBLICATIONS

  • Activated Carbon and Polymeric Ion Exchange Sorbents for Metaldehyde Elimination
    PS Koujalagi, R Rangappa, JM Karekar, JC Abbar, M Nagamadhu
    Ion Exchange Processes for Water and Environment Management, 341-355 , 2025
    2025
    Citations: 2
  • Polymer Cation Exchange Sorbents for the Removal of Heavy Metal Ions
    JM Karekar, R Ravichandra, P Koujalagi, JC Abbar, M Nagamadhu, ...
    Ion Exchange Processes for Water and Environment Management, 139-167 , 2025
    2025
    Citations: 3
  • BOS Committee-SEP-B. Sc. Chemistry 2024-25
    AK Samant
    2024
  • Adsorption studies of fluoride on weak base anion exchangers and surface modified strong acid cation exchangers in aqueous medium
    JM Karekar, RT Katamble, SV Divekar
    Desalination and Water Treatment 204 (2020), 356-365 , 2020
    2020
    Citations: 4
  • Removal of thiocyanate from water by using weak base microporous resins of different matrix structure
    JM Karekar, SV Divekar
    Desalination and Water Treatment 167, 176-182 , 2019
    2019
    Citations: 11
  • Adsorption studies of chromium (VI) on weak base resins Tulsion A-10X (MP) and Amberlyst A-21 (MP) in aqueous and mixed media
    JM Karekar, SV Divekar
    Desalination and Water Treatment 82, 252-261 , 2017
    2017
    Citations: 4
  • Effect of resin structure and resin fixed ion on the selectivity of perchlorate and nitrate in aqueous and mixed media
    RT Katamble, JM Karekar, SV Divekar
    Asian Journal of Chemistry 29 (1), 209-212 , 2016
    2016

MOST CITED SCHOLAR PUBLICATIONS

  • Removal of thiocyanate from water by using weak base microporous resins of different matrix structure
    JM Karekar, SV Divekar
    Desalination and Water Treatment 167, 176-182 , 2019
    2019
    Citations: 11
  • Adsorption studies of fluoride on weak base anion exchangers and surface modified strong acid cation exchangers in aqueous medium
    JM Karekar, RT Katamble, SV Divekar
    Desalination and Water Treatment 204 (2020), 356-365 , 2020
    2020
    Citations: 4
  • Adsorption studies of chromium (VI) on weak base resins Tulsion A-10X (MP) and Amberlyst A-21 (MP) in aqueous and mixed media
    JM Karekar, SV Divekar
    Desalination and Water Treatment 82, 252-261 , 2017
    2017
    Citations: 4
  • Polymer Cation Exchange Sorbents for the Removal of Heavy Metal Ions
    JM Karekar, R Ravichandra, P Koujalagi, JC Abbar, M Nagamadhu, ...
    Ion Exchange Processes for Water and Environment Management, 139-167 , 2025
    2025
    Citations: 3
  • Activated Carbon and Polymeric Ion Exchange Sorbents for Metaldehyde Elimination
    PS Koujalagi, R Rangappa, JM Karekar, JC Abbar, M Nagamadhu
    Ion Exchange Processes for Water and Environment Management, 341-355 , 2025
    2025
    Citations: 2
  • BOS Committee-SEP-B. Sc. Chemistry 2024-25
    AK Samant
    2024
  • Effect of resin structure and resin fixed ion on the selectivity of perchlorate and nitrate in aqueous and mixed media
    RT Katamble, JM Karekar, SV Divekar
    Asian Journal of Chemistry 29 (1), 209-212 , 2016
    2016