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Extraction of Humic Acid from Agricultural Crop Residues Conditioned with Cow Dung, Compost from Landfill and Human Waste

Received: 27 May 2021     Accepted: 29 June 2021     Published: 17 November 2021
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Abstract

Rwanda has various sources for humic substances that may be utilized for the large scale production of humic acid which can be used as soil amendment to enhance the plant growth. Humic substance is a dark colored fully decomposed remains of plant and animal organic matter through the process called humification. This work aims of finding the potential source of extracting humic acid for reducing environment pollution and increasing the yield from agriculture in any weather seasons The potential sources that were investigated in this study include 30:70 coffee husk and cow dung named as A, 70:30 coffee husk and cow dung named as C, 30:70 cow dung and rice husk named as B, compost from landfill named as LC and human waste named as HW. All tested samples were treated with 0.1M sodium hydroxide NaOH for dissolving all humic substances. Humic acid was recovered after all sources were allowed to be precipitated with concentrated hydrochloric acid (38%). Analysis was done with UV-visible spectrometer through determining E4/E6 ratio and concentration. Also masses were measured with electrical balance. The results shows that in all tested sample, landfill compost and 30:70 cow dung and rice husks have low E4/E4 which signify high degree of aromatic condensation, high molecular weight compared to the other sources these values are 4.31 and 4 respectively. The concentration also was found to be 770 ppm for landfill compost and 484.54ppm for 30:70 cow dung and rice husks. Finally, in all tested samples landfill compost (LC) and 30:70 cow dung and rice (B) husks found to be considered as potential source for production of humic acid compared to the tested potential source.

Published in American Journal of Physical Chemistry (Volume 10, Issue 4)
DOI 10.11648/j.ajpc.20211004.15
Page(s) 81-87
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), 2021. Published by Science Publishing Group

Keywords

Humic Acid, Landfill Compost, Coffee Husk, Rice Husk, Cow Dung

References
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[3] E. R. Graber and Y. Rudich, ‘Atmospheric HULIS: How humic-like are they? A comprehensive and critical review’, Atmos. Chem. Phys., vol. 6, no. 3, pp. 729–753, 2006, doi: 10.5194/acp-6-729-2006.
[4] I. S. Shamia, M. N. Halabi, and N. M. El-ashgar, ‘Humic Acid Determination in some Compost and Fertilizer Samples’, J. Nat. Stud., vol. 25, no. April, pp. 42–50, 2017.
[5] K. L. Billingham, ‘Why Use Humic products ?’, pp. 1–2, 2012.
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[9] V. Vusie, ‘Identification of Extraction Methods for the Production of Humic Acids from Black Liquor’, Master’s Thesis, Stellenbosch Univ., no. December, 2006.
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[11] B. Gayathri, C. Srinivasamurthy, B. Vasanthi, D. Naveen, N. Prakash, and S. Bhaskar, ‘Extraction and charactrisation of humic acid from different organic wastes and its physico-chemical properties’, Int. J. Chem. Stud., vol. 8, no. 1, pp. 769–775, 2020, doi: 10.22271/chemi.2020.v8.i1k.8359.
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    Antoinette Abijuru, Theoneste Bisangabagabo, Jean De Dieu Shema, Froduard Hitimana, Nestor Uwitonze. (2021). Extraction of Humic Acid from Agricultural Crop Residues Conditioned with Cow Dung, Compost from Landfill and Human Waste. American Journal of Physical Chemistry, 10(4), 81-87. https://doi.org/10.11648/j.ajpc.20211004.15

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    ACS Style

    Antoinette Abijuru; Theoneste Bisangabagabo; Jean De Dieu Shema; Froduard Hitimana; Nestor Uwitonze. Extraction of Humic Acid from Agricultural Crop Residues Conditioned with Cow Dung, Compost from Landfill and Human Waste. Am. J. Phys. Chem. 2021, 10(4), 81-87. doi: 10.11648/j.ajpc.20211004.15

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    AMA Style

    Antoinette Abijuru, Theoneste Bisangabagabo, Jean De Dieu Shema, Froduard Hitimana, Nestor Uwitonze. Extraction of Humic Acid from Agricultural Crop Residues Conditioned with Cow Dung, Compost from Landfill and Human Waste. Am J Phys Chem. 2021;10(4):81-87. doi: 10.11648/j.ajpc.20211004.15

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  • @article{10.11648/j.ajpc.20211004.15,
      author = {Antoinette Abijuru and Theoneste Bisangabagabo and Jean De Dieu Shema and Froduard Hitimana and Nestor Uwitonze},
      title = {Extraction of Humic Acid from Agricultural Crop Residues Conditioned with Cow Dung, Compost from Landfill and Human Waste},
      journal = {American Journal of Physical Chemistry},
      volume = {10},
      number = {4},
      pages = {81-87},
      doi = {10.11648/j.ajpc.20211004.15},
      url = {https://doi.org/10.11648/j.ajpc.20211004.15},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajpc.20211004.15},
      abstract = {Rwanda has various sources for humic substances that may be utilized for the large scale production of humic acid which can be used as soil amendment to enhance the plant growth. Humic substance is a dark colored fully decomposed remains of plant and animal organic matter through the process called humification. This work aims of finding the potential source of extracting humic acid for reducing environment pollution and increasing the yield from agriculture in any weather seasons The potential sources that were investigated in this study include 30:70 coffee husk and cow dung named as A, 70:30 coffee husk and cow dung named as C, 30:70 cow dung and rice husk named as B, compost from landfill named as LC and human waste named as HW. All tested samples were treated with 0.1M sodium hydroxide NaOH for dissolving all humic substances. Humic acid was recovered after all sources were allowed to be precipitated with concentrated hydrochloric acid (38%). Analysis was done with UV-visible spectrometer through determining E4/E6 ratio and concentration. Also masses were measured with electrical balance. The results shows that in all tested sample, landfill compost and 30:70 cow dung and rice husks have low E4/E4 which signify high degree of aromatic condensation, high molecular weight compared to the other sources these values are 4.31 and 4 respectively. The concentration also was found to be 770 ppm for landfill compost and 484.54ppm for 30:70 cow dung and rice husks. Finally, in all tested samples landfill compost (LC) and 30:70 cow dung and rice (B) husks found to be considered as potential source for production of humic acid compared to the tested potential source.},
     year = {2021}
    }
    

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  • TY  - JOUR
    T1  - Extraction of Humic Acid from Agricultural Crop Residues Conditioned with Cow Dung, Compost from Landfill and Human Waste
    AU  - Antoinette Abijuru
    AU  - Theoneste Bisangabagabo
    AU  - Jean De Dieu Shema
    AU  - Froduard Hitimana
    AU  - Nestor Uwitonze
    Y1  - 2021/11/17
    PY  - 2021
    N1  - https://doi.org/10.11648/j.ajpc.20211004.15
    DO  - 10.11648/j.ajpc.20211004.15
    T2  - American Journal of Physical Chemistry
    JF  - American Journal of Physical Chemistry
    JO  - American Journal of Physical Chemistry
    SP  - 81
    EP  - 87
    PB  - Science Publishing Group
    SN  - 2327-2449
    UR  - https://doi.org/10.11648/j.ajpc.20211004.15
    AB  - Rwanda has various sources for humic substances that may be utilized for the large scale production of humic acid which can be used as soil amendment to enhance the plant growth. Humic substance is a dark colored fully decomposed remains of plant and animal organic matter through the process called humification. This work aims of finding the potential source of extracting humic acid for reducing environment pollution and increasing the yield from agriculture in any weather seasons The potential sources that were investigated in this study include 30:70 coffee husk and cow dung named as A, 70:30 coffee husk and cow dung named as C, 30:70 cow dung and rice husk named as B, compost from landfill named as LC and human waste named as HW. All tested samples were treated with 0.1M sodium hydroxide NaOH for dissolving all humic substances. Humic acid was recovered after all sources were allowed to be precipitated with concentrated hydrochloric acid (38%). Analysis was done with UV-visible spectrometer through determining E4/E6 ratio and concentration. Also masses were measured with electrical balance. The results shows that in all tested sample, landfill compost and 30:70 cow dung and rice husks have low E4/E4 which signify high degree of aromatic condensation, high molecular weight compared to the other sources these values are 4.31 and 4 respectively. The concentration also was found to be 770 ppm for landfill compost and 484.54ppm for 30:70 cow dung and rice husks. Finally, in all tested samples landfill compost (LC) and 30:70 cow dung and rice (B) husks found to be considered as potential source for production of humic acid compared to the tested potential source.
    VL  - 10
    IS  - 4
    ER  - 

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Author Information
  • Department of Chemistry, School of Science, College of Science and Technology, University of Rwanda, Kigali, Rwanda

  • Department of Chemistry, School of Science, College of Science and Technology, University of Rwanda, Kigali, Rwanda

  • Department of Chemistry, School of Science, College of Science and Technology, University of Rwanda, Kigali, Rwanda

  • Department of Chemistry, School of Science, College of Science and Technology, University of Rwanda, Kigali, Rwanda

  • Department of Chemistry, School of Science, College of Science and Technology, University of Rwanda, Kigali, Rwanda

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