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Adsorption Studies of Pb2+, Cu2+ and Cr3+ from Aqueous Solution Using Azadirachta Indica (Neem) Seed Husk and Adansonia Digitata (Baobab) Seeds

Received: 12 June 2024     Accepted: 10 July 2024     Published: 27 August 2024
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Abstract

The adsorption of Pb2+, Cu2+ and Cr3+ from aqueous solution using Neem seed husk (NSH) and baobab seed (BS) were studied through the use of batch adsorption system. The adsorbents were prepared by drying at 120°C for 24hours and were characterized using FT-IR, XRD, and SEM analysis. The FTIR spectroscopy revealed the presence of O-H, N-H, C-H, C=C, C=O, and C-O stretching; XRD revealed the particle sizes as 44.51nm for NSH and 42.61nm while the morphology of the NSH and BS were revealed by SEM to be porous for NSH and BS. Various parameters such as, initial metal ion concentration, adsorbent dosage, contact time, Temperature and pH of metal ion solution were investigated in a batch-adsorption System. The adsorption uptake was found to increase with increase in adsorbent dose, contact time and temperature but decreases with the initial concentration. The uptake of the metal ions increases and reaches optimum at pH of 4-6. The maximum adsorption capacity was found to be Pb-NSH (15.267mg/g) and Cu-NSH (19.46mg/g). Adsorption of Cu2+onto NSH fitted Langmuir isotherm model with (R2 > 0.93) while Adsorption of Pb-NSH Fitted Freundlich isotherm Model with (R2> 0.99). Kinetic data fitted pseudo-second-order model (R2 > 0.98) which was more suitable in explaining the adsorption rate. Thermodynamic data showed that Gibb’s free energy (ΔG°) values for all metal ions were negative indicating feasibility and favorability of adsorption. Positive enthalpy change (ΔH°) and Entropy change (ΔS°) values indicate endothermic processes and increase in randomness.

Published in Science Journal of Chemistry (Volume 12, Issue 4)
DOI 10.11648/j.sjc.20241204.12
Page(s) 73-85
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Adsorption Studies, Aqueous Solution, Azadirachta Indica (Neem) Seed Husk, Adansonia Digitata (Baobab) Seeds

References
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[6] Yahaya, N. P., Aliyu, A. D., David, Y. M. & Abubakar, A. (2022). Kinetic, Equilibrium and Thermodynamics Study of the Adsorption of Pb(II), Cu(II) and Ni(II) from Aqueous Solution using Mangnifera Indica Leaves. Online Journal of Materials Science, 1(1), 16-29.
[7] Yahaya, N. P., Ali, I., Kolo, A. M., Shehu, A. (2023) “Adsorption Study of Methylene Blue on to Powder Activated Carbon Prepared from Ananas comosus Peels”, Nanochem. Res., 8(4): 231-242.
[8] Yahaya, N. P., Umar, A., David, Y. M. & Abubakar, A. (2022). Kinetic, Equilibrium and Thermodynamics Study of the Adsorption of Pb(II), Ni(II) and Cu(II) from Aqueous Solution using Psidium guajava (Guava) Leaves. Chemical Science & Engineering Research, 4(10), 9-10.
[9] Ullah, M., Nazir, R., Khan, M. Khan, W. Shah, M., Afridi, S. G., & Zada, A. (2020). The effective removal of heavy metals from water by activated carbon adsorbents of Albizia lebbeck and Melia azedarach seed shells. Soil and Water Research, 15(1): 30-37.
[10] Aderibigbe, A. D., Ogunlalu, O. U., Oluwasina, O. O. & Amoo, I. A. (2017). Adsorption Studies of Pb2+ from Aqueous Solutions Using Unmodified and Citric Acid – Modified Plantain (Musa paradisiaca) Peels. IOSR Journal of Applied Chemistry, 10(2): 30-39.
[11] Taha, A. A., & AbdelGhani, S. A. A. (2016). Adsorption Kinetics, Equilibrium, and Thermodynamics of Copper from Aqueous Solutions using Silicon Carbide Derived from Rice Waste. Journal of Dispersion Science and Technology, 37(2), 173-182.
[12] Buhari, M, Nasiru. Y. P., & Ibrahim, M. B. (2024) Synthesis of TiO2 Impregnated Ribes nigrum Stem Nanoactivated Carbon and their Application to Remove Heavy Metals. Asian Journal of Chemical Science., 14(2), 149-160.
[13] Wilson, L, D., Nasiru, Y. P., & Markus L. (2023) “Green Synthesis and Characterization of Silver – Cadmium (Ag-Cd Bimetallic) Nanoparticles from Ocimum Gratissimum Leaves Extract and Evaluation of its Antimicrobial Activities” Bima Journal of Science and Technology” 7(3) 29-35.
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    Yahaya, N. P., Saad, Y. A., Abubakar, A. (2024). Adsorption Studies of Pb2+, Cu2+ and Cr3+ from Aqueous Solution Using Azadirachta Indica (Neem) Seed Husk and Adansonia Digitata (Baobab) Seeds. Science Journal of Chemistry, 12(4), 73-85. https://doi.org/10.11648/j.sjc.20241204.12

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    ACS Style

    Yahaya, N. P.; Saad, Y. A.; Abubakar, A. Adsorption Studies of Pb2+, Cu2+ and Cr3+ from Aqueous Solution Using Azadirachta Indica (Neem) Seed Husk and Adansonia Digitata (Baobab) Seeds. Sci. J. Chem. 2024, 12(4), 73-85. doi: 10.11648/j.sjc.20241204.12

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    AMA Style

    Yahaya NP, Saad YA, Abubakar A. Adsorption Studies of Pb2+, Cu2+ and Cr3+ from Aqueous Solution Using Azadirachta Indica (Neem) Seed Husk and Adansonia Digitata (Baobab) Seeds. Sci J Chem. 2024;12(4):73-85. doi: 10.11648/j.sjc.20241204.12

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  • @article{10.11648/j.sjc.20241204.12,
      author = {Nasiru Pindiga Yahaya and Yahaya Aliyu Saad and Adamu Abubakar},
      title = {Adsorption Studies of Pb2+, Cu2+ and Cr3+ from Aqueous Solution Using Azadirachta Indica (Neem) Seed Husk and Adansonia Digitata (Baobab) Seeds
    },
      journal = {Science Journal of Chemistry},
      volume = {12},
      number = {4},
      pages = {73-85},
      doi = {10.11648/j.sjc.20241204.12},
      url = {https://doi.org/10.11648/j.sjc.20241204.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sjc.20241204.12},
      abstract = {The adsorption of Pb2+, Cu2+ and Cr3+ from aqueous solution using Neem seed husk (NSH) and baobab seed (BS) were studied through the use of batch adsorption system. The adsorbents were prepared by drying at 120°C for 24hours and were characterized using FT-IR, XRD, and SEM analysis. The FTIR spectroscopy revealed the presence of O-H, N-H, C-H, C=C, C=O, and C-O stretching; XRD revealed the particle sizes as 44.51nm for NSH and 42.61nm while the morphology of the NSH and BS were revealed by SEM to be porous for NSH and BS. Various parameters such as, initial metal ion concentration, adsorbent dosage, contact time, Temperature and pH of metal ion solution were investigated in a batch-adsorption System. The adsorption uptake was found to increase with increase in adsorbent dose, contact time and temperature but decreases with the initial concentration. The uptake of the metal ions increases and reaches optimum at pH of 4-6. The maximum adsorption capacity was found to be Pb-NSH (15.267mg/g) and Cu-NSH (19.46mg/g). Adsorption of Cu2+onto NSH fitted Langmuir isotherm model with (R2 > 0.93) while Adsorption of Pb-NSH Fitted Freundlich isotherm Model with (R2> 0.99). Kinetic data fitted pseudo-second-order model (R2 > 0.98) which was more suitable in explaining the adsorption rate. Thermodynamic data showed that Gibb’s free energy (ΔG°) values for all metal ions were negative indicating feasibility and favorability of adsorption. Positive enthalpy change (ΔH°) and Entropy change (ΔS°) values indicate endothermic processes and increase in randomness.
    },
     year = {2024}
    }
    

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  • TY  - JOUR
    T1  - Adsorption Studies of Pb2+, Cu2+ and Cr3+ from Aqueous Solution Using Azadirachta Indica (Neem) Seed Husk and Adansonia Digitata (Baobab) Seeds
    
    AU  - Nasiru Pindiga Yahaya
    AU  - Yahaya Aliyu Saad
    AU  - Adamu Abubakar
    Y1  - 2024/08/27
    PY  - 2024
    N1  - https://doi.org/10.11648/j.sjc.20241204.12
    DO  - 10.11648/j.sjc.20241204.12
    T2  - Science Journal of Chemistry
    JF  - Science Journal of Chemistry
    JO  - Science Journal of Chemistry
    SP  - 73
    EP  - 85
    PB  - Science Publishing Group
    SN  - 2330-099X
    UR  - https://doi.org/10.11648/j.sjc.20241204.12
    AB  - The adsorption of Pb2+, Cu2+ and Cr3+ from aqueous solution using Neem seed husk (NSH) and baobab seed (BS) were studied through the use of batch adsorption system. The adsorbents were prepared by drying at 120°C for 24hours and were characterized using FT-IR, XRD, and SEM analysis. The FTIR spectroscopy revealed the presence of O-H, N-H, C-H, C=C, C=O, and C-O stretching; XRD revealed the particle sizes as 44.51nm for NSH and 42.61nm while the morphology of the NSH and BS were revealed by SEM to be porous for NSH and BS. Various parameters such as, initial metal ion concentration, adsorbent dosage, contact time, Temperature and pH of metal ion solution were investigated in a batch-adsorption System. The adsorption uptake was found to increase with increase in adsorbent dose, contact time and temperature but decreases with the initial concentration. The uptake of the metal ions increases and reaches optimum at pH of 4-6. The maximum adsorption capacity was found to be Pb-NSH (15.267mg/g) and Cu-NSH (19.46mg/g). Adsorption of Cu2+onto NSH fitted Langmuir isotherm model with (R2 > 0.93) while Adsorption of Pb-NSH Fitted Freundlich isotherm Model with (R2> 0.99). Kinetic data fitted pseudo-second-order model (R2 > 0.98) which was more suitable in explaining the adsorption rate. Thermodynamic data showed that Gibb’s free energy (ΔG°) values for all metal ions were negative indicating feasibility and favorability of adsorption. Positive enthalpy change (ΔH°) and Entropy change (ΔS°) values indicate endothermic processes and increase in randomness.
    
    VL  - 12
    IS  - 4
    ER  - 

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Author Information
  • Department of Chemistry, Faculty of Science, Gombe State University Gombe, Gombe, Nigeria

  • Department of Chemistry, Faculty of Science, Gombe State University Gombe, Gombe, Nigeria

  • Department of Chemistry, Faculty of Science, Gombe State University Gombe, Gombe, Nigeria

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