Leena Merlin Biju

@krmmc.edu.in

Assistant Professor , Department of Biotechnology
Kumararani Meena Muthiah College of Arts & Science/ University of Madras

Leena Merlin Biju


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https://researchid.co/leenabiju
Earnest and passionate towards teaching with 22 years of experience. Confident in encouraging and supporting the student community to actively involve and engage to progress into a holistic individual.

EDUCATION

MSc, MPhil, Microbiolgy, ( -Applied Microbiology- Biotechnology ( Submitted Thesis)

RESEARCH, TEACHING, or OTHER INTERESTS

Applied Microbiology and Biotechnology, Microbiology, Biotechnology, General Immunology and Microbiology
4

Scopus Publications

71

Scholar Citations

3

Scholar h-index

2

Scholar i10-index

Scopus Publications

  • Remediation of mixed dyes and chromium (VI) in textile effluent using chemically synthesized Cerium Oxide nanoparticle
    K. Veena Gayathri, Anisha Susan Johnson, P. Senthil Kumar, Leena Merlin Biju, Gayathri Rangasamy
    Desalination and Water Treatment, 2025
    This work emphasized on the chemical synthesis of CeO 2 nanoparticles, which are used as an important material for removing chromium(VI) and mixed dyes. The current study was experimented using chemically synthesized CeO 2 nanoparticles in a lab-scale reactor set-up. The yielded nanoparticles were illustrated by UV-DRS, which revealed a band-gap energy of 2.45 eV. X-ray diffraction analysis (XRD) showed the face-centred cubic structured nanoparticles with a standard crystallite size of 19.06 nm. SEM analysis revealed an average particle size of 26.03 nm. The EDAX studies featured the presence of available Cerium in the nanoparticle. The highest percentage of photocatalytic removal using chemically synthesized CeO 2 as a catalyst was 65.7 ± 0.0005 % for mixed dyes and 71.08 ± 0.0005 % for Cr(VI). The degradation of mixed dyes (150 mg/L) and removal of Cr(VI) (40 mg/L) using chemically synthesized nanoparticles at 120 min was 56.45 ± 0.0005 % and 82.91 ± 0.0005 % respectively. Studies were conducted to analyze the removal of COD (63.61 %), TDS (74.79 %), Phosphates (53.91 %), and Chlorides (21.23 %). Various analytical methods such as Gas Chromatography-Mass Spectrometry (GC-MS) and FT-IR Fourier-transform infrared spectroscopy (FTIR) examination were applied to evaluate the presence of degraded products.
  • Alkalophilic bacterial co-cultures for the remediation of toxic pollutants in textile wastewater
    Anisha Susan Johnson, Leena Merlin Biju, P. Senthil Kumar, K. Veena Gayathri, Gayathri Rangasamy, C. S. Poorva
    Biomass Conversion and Biorefinery, 2024
  • Application of Salvinia sps. in remediation of reactive mixed azo dyes and Cr (VI) - Its pathway elucidation
    Leena Merlin Biju, Veena Gayathri K, P. Senthil Kumar, R. Kavitha, Revathy Rajagopal, Gayathri Rangasamy
    Environmental Research, 2023
  • Treatment of textile wastewater containing mixed toxic azo dye and chromium (VI) BY haloalkaliphilic bacterial consortium
    Leena Merlin Biju, V. Pooshana, P. Senthil Kumar, K. Veena Gayathri, Sabah Ansar, Saravanan Govindaraju
    Chemosphere, 2022

RECENT SCHOLAR PUBLICATIONS

  • Remediation of mixed dyes and chromium (VI) in textile effluent using chemically synthesized cerium oxide nanoparticle
    KV Gayathri, AS Johnson, PS Kumar, LM Biju, G Rangasamy
    Desalination and Water Treatment 321, 100909 , 2025
    2025
    Citations: 8
  • Alkalophilic bacterial co-cultures for the remediation of toxic pollutants in textile wastewater
    AS Johnson, LM Biju, PS Kumar, KV Gayathri, G Rangasamy, CS Poorva
    Biomass Conversion and Biorefinery 14 (19), 24833-24845 , 2024
    2024
    Citations: 2
  • Application of Salvinia sps. in remediation of reactive mixed azo dyes and Cr (VI)-Its pathway elucidation
    LM Biju, PS Kumar, R Kavitha, R Rajagopal, G Rangasamy
    Environmental Research 216, 114635 , 2023
    2023
    Citations: 17
  • Treatment of textile wastewater containing mixed toxic azo dye and chromium (VI) BY haloalkaliphilic bacterial consortium
    LM Biju, V Pooshana, PS Kumar, KV Gayathri, S Ansar, S Govindaraju
    Chemosphere 287, 132280 , 2022
    2022
    Citations: 41
  • Bioremediation and phytoremediation: the remedies for xenobiotics
    LM Biju, VG Krishnaswamy
    Handbook of Research on Microbial Remediation and Microbial Biotechnology … , 2021
    2021
    Citations: 3

MOST CITED SCHOLAR PUBLICATIONS

  • Treatment of textile wastewater containing mixed toxic azo dye and chromium (VI) BY haloalkaliphilic bacterial consortium
    LM Biju, V Pooshana, PS Kumar, KV Gayathri, S Ansar, S Govindaraju
    Chemosphere 287, 132280 , 2022
    2022
    Citations: 41
  • Application of Salvinia sps. in remediation of reactive mixed azo dyes and Cr (VI)-Its pathway elucidation
    LM Biju, PS Kumar, R Kavitha, R Rajagopal, G Rangasamy
    Environmental Research 216, 114635 , 2023
    2023
    Citations: 17
  • Remediation of mixed dyes and chromium (VI) in textile effluent using chemically synthesized cerium oxide nanoparticle
    KV Gayathri, AS Johnson, PS Kumar, LM Biju, G Rangasamy
    Desalination and Water Treatment 321, 100909 , 2025
    2025
    Citations: 8
  • Bioremediation and phytoremediation: the remedies for xenobiotics
    LM Biju, VG Krishnaswamy
    Handbook of Research on Microbial Remediation and Microbial Biotechnology … , 2021
    2021
    Citations: 3
  • Alkalophilic bacterial co-cultures for the remediation of toxic pollutants in textile wastewater
    AS Johnson, LM Biju, PS Kumar, KV Gayathri, G Rangasamy, CS Poorva
    Biomass Conversion and Biorefinery 14 (19), 24833-24845 , 2024
    2024
    Citations: 2

Publications

 Gayathri, K. V., Johnson, A. S., Kumar, P. S., Biju, L. M., & Rangasamy, G. (2025). Remediation of mixed dyes and chromium (VI) in textile effluent using chemically synthesized Cerium Oxide nanoparticle. Desalination and Water Treatment, 321,100909. doi: 10.1016/j..
 Johnson, A. S., Biju, L. M., Kumar, P. S., Gayathri, K. V., Rangasamy, G., & Poorva, C. S. (2024). Alkalophilic bacterial co-cultures for the remediation of toxic pollutants in textile wastewater. Biomass Conversion and Biorefinery, 14(19), 24833-24845. .
 Biju, L. M., Kumar, P. S., Kavitha, R., Rajagopal, R., & Rangasamy, G. (2023). Application of Salvinia sps in remediation of reactive mixed azo dyes, and Cr (VI)-Its pathway elucidation. Environmental Research , 216,114635. https:// .
 Biju, L. M., Pooshana, V., Kumar, P. S., Gayathri, K. V., Ansar, S., & Govindaraju, S. (2022). Treatment of textile wastewater containing mixed toxic azo dye and chromium (VI) by haloalkaliphilic bacterial consortium. Chemosphere, 287,132280. .
 Published online a book chapter on the Bioremediation and Phytoremediation:
Biju, L. M., & Krishnaswamy, V. G. (2021). Bioremediation and phytoremediation: the remedies for xenobiotics. In Handbook of Research on Microbial Remediation and Microbial Biotechnology for Sustainable Soil (pp. 38-64). IGI Global.