Studies were conducted on the biodigestion of cow-dung into organic fertilizer with the aim of determining the effect of process parameters on the quality of the product. The Hydrogen ion index (pH) was varied from 3.5 to 7.0 whereas the microbe: substrate (M/S) ratio was varied from 1.33 to 4.5g/kg and biodigestion time from 3 to 24hrs. The fertilizer produced was characterized by the NPK content and the production index (PI). The extent of biodigestion as indicated by the PI value, varied with the pH, ranging from 0.068 to 0.109 for pH between 3.5 to 7.0. Hydrogen ion index (pH) range of 3.5-4.0 at the temperature of 350°C, using native microbial flora were discovered to be most favorable to the biodigestion process, with PI 0.109 to 0.12. It was also discovered that the use of mixed culture (native microbe plus cultured saccharomyces cerevisiea further enhanced the result. A maximum microbe-substrate ratio of 4.5g/kg and a minimum of 2.67g/kg on mass basis were recommended. Within a bioconversion period of nine hours (9hrs), a product with N. P. K values of 2.9; 0.016, and 1.55 was obtained representing an increase in fertilizer value by 61.1% and 78.5% in Nitrogen (N) and potassium nutrient compositions respectively within the period. The fertilizer has an acceptable odour when dried and readily available to plant on application. It was also observed that the biodigestion process generated an exceeding quantity of biogas which can be trapped and upgraded for other domestic and industrial applications.
| Published in | American Journal of Chemical Engineering (Volume 6, Issue 5) |
| DOI | 10.11648/j.ajche.20180605.14 |
| Page(s) | 99-106 |
| 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), 2018. Published by Science Publishing Group |
Biodigestion, Fertilizer, Sustainability, Ozone
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APA Style
Udeh Sunday, Ekumankama Ekuma Onu. (2018). Effect of Process Condition on the Bio-Digestion of Cow Dung for Organic Fertilizer Production. American Journal of Chemical Engineering, 6(5), 99-106. https://doi.org/10.11648/j.ajche.20180605.14
ACS Style
Udeh Sunday; Ekumankama Ekuma Onu. Effect of Process Condition on the Bio-Digestion of Cow Dung for Organic Fertilizer Production. Am. J. Chem. Eng. 2018, 6(5), 99-106. doi: 10.11648/j.ajche.20180605.14
AMA Style
Udeh Sunday, Ekumankama Ekuma Onu. Effect of Process Condition on the Bio-Digestion of Cow Dung for Organic Fertilizer Production. Am J Chem Eng. 2018;6(5):99-106. doi: 10.11648/j.ajche.20180605.14
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Download@article{10.11648/j.ajche.20180605.14,
author = {Udeh Sunday and Ekumankama Ekuma Onu},
title = {Effect of Process Condition on the Bio-Digestion of Cow Dung for Organic Fertilizer Production},
journal = {American Journal of Chemical Engineering},
volume = {6},
number = {5},
pages = {99-106},
doi = {10.11648/j.ajche.20180605.14},
url = {https://doi.org/10.11648/j.ajche.20180605.14},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajche.20180605.14},
abstract = {Studies were conducted on the biodigestion of cow-dung into organic fertilizer with the aim of determining the effect of process parameters on the quality of the product. The Hydrogen ion index (pH) was varied from 3.5 to 7.0 whereas the microbe: substrate (M/S) ratio was varied from 1.33 to 4.5g/kg and biodigestion time from 3 to 24hrs. The fertilizer produced was characterized by the NPK content and the production index (PI). The extent of biodigestion as indicated by the PI value, varied with the pH, ranging from 0.068 to 0.109 for pH between 3.5 to 7.0. Hydrogen ion index (pH) range of 3.5-4.0 at the temperature of 350°C, using native microbial flora were discovered to be most favorable to the biodigestion process, with PI 0.109 to 0.12. It was also discovered that the use of mixed culture (native microbe plus cultured saccharomyces cerevisiea further enhanced the result. A maximum microbe-substrate ratio of 4.5g/kg and a minimum of 2.67g/kg on mass basis were recommended. Within a bioconversion period of nine hours (9hrs), a product with N. P. K values of 2.9; 0.016, and 1.55 was obtained representing an increase in fertilizer value by 61.1% and 78.5% in Nitrogen (N) and potassium nutrient compositions respectively within the period. The fertilizer has an acceptable odour when dried and readily available to plant on application. It was also observed that the biodigestion process generated an exceeding quantity of biogas which can be trapped and upgraded for other domestic and industrial applications.},
year = {2018}
}
TY - JOUR T1 - Effect of Process Condition on the Bio-Digestion of Cow Dung for Organic Fertilizer Production AU - Udeh Sunday AU - Ekumankama Ekuma Onu Y1 - 2018/11/01 PY - 2018 N1 - https://doi.org/10.11648/j.ajche.20180605.14 DO - 10.11648/j.ajche.20180605.14 T2 - American Journal of Chemical Engineering JF - American Journal of Chemical Engineering JO - American Journal of Chemical Engineering SP - 99 EP - 106 PB - Science Publishing Group SN - 2330-8613 UR - https://doi.org/10.11648/j.ajche.20180605.14 AB - Studies were conducted on the biodigestion of cow-dung into organic fertilizer with the aim of determining the effect of process parameters on the quality of the product. The Hydrogen ion index (pH) was varied from 3.5 to 7.0 whereas the microbe: substrate (M/S) ratio was varied from 1.33 to 4.5g/kg and biodigestion time from 3 to 24hrs. The fertilizer produced was characterized by the NPK content and the production index (PI). The extent of biodigestion as indicated by the PI value, varied with the pH, ranging from 0.068 to 0.109 for pH between 3.5 to 7.0. Hydrogen ion index (pH) range of 3.5-4.0 at the temperature of 350°C, using native microbial flora were discovered to be most favorable to the biodigestion process, with PI 0.109 to 0.12. It was also discovered that the use of mixed culture (native microbe plus cultured saccharomyces cerevisiea further enhanced the result. A maximum microbe-substrate ratio of 4.5g/kg and a minimum of 2.67g/kg on mass basis were recommended. Within a bioconversion period of nine hours (9hrs), a product with N. P. K values of 2.9; 0.016, and 1.55 was obtained representing an increase in fertilizer value by 61.1% and 78.5% in Nitrogen (N) and potassium nutrient compositions respectively within the period. The fertilizer has an acceptable odour when dried and readily available to plant on application. It was also observed that the biodigestion process generated an exceeding quantity of biogas which can be trapped and upgraded for other domestic and industrial applications. VL - 6 IS - 5 ER -
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