Determining Chemical Composition of Cattle Urine and Indigenous Plant Extracts

Miah, Md. Nur Alam; Miah, M. R. U.; Alam, M.J.

doi:10.21467/ias.3.1.23-26

Cited by 6 publications

(9 citation statements)

References 6 publications

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“…Therefore, the elemental composition of urine can have a positive effect on balancing the digester stability, meanwhile reducing on H 2 S content in the biogas for electricity generation applications. In addition, urine contains a significant amount of urea [83]. If urine is stored, urea is hydrolysed to ammonia and bicarbonate, which increases the pH of urine to values reaching as high as 9 [57].…”

Section: Discussionmentioning

confidence: 99%

Improvement of Biogas Quality and Quantity for Small-Scale Biogas-Electricity Generation Application in off-Grid Settings: A Field-Based Study

et al. 2021

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Small-scale electrical power generation (<100 kW) from biogas plants to provide off-grid electricity is of growing interest. Currently, gas engines are used to meet this demand. Alternatively, more efficient small-scale solid oxide fuel cells (SOFCs) can be used to enhance electricity generation from small-scale biogas plants. Most electricity generators require a constant gas supply and high gas quality in terms of absence of impurities like H2S. Therefore, to efficiently use the biogas from existing decentralized anaerobic digesters for electricity production, higher quality and stable biogas flow must be guaranteed. The installation of a biogas upgrading and buffer system could be considered; however, the cost implication could be high at a small scale as compared to locally available alternatives such as co-digestion and improved digester operation. Therefore, this study initially describes relevant literature related to feedstock pre-treatment, co-digestion and user operational practices of small-scale digesters, which theoretically could lead to major improvements of anaerobic digestion process efficiency. The theoretical preamble is then coupled to the results of a field study, which demonstrated that many locally available resources and user practices constitute frugal innovations with potential to improve biogas quality and digester performance in off-grid settings.

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Section: Discussionmentioning

confidence: 99%

Improvement of Biogas Quality and Quantity for Small-Scale Biogas-Electricity Generation Application in off-Grid Settings: A Field-Based Study

et al. 2021

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“…Therefore, addition of CU with CD as a diluting agent instead of water could not only enrich the nutritive value of BGS but also helps in managing pollution. In addition, extract of BGS amended with CU may be used as pest repellent as fermented cattle urine is rich in chloride, sulphate and nitrite (Miah et al, 2017). Considering the above facts, we previously reported the impact of urine on biogas production and the cumulative gas volume of CU amended sample was found to be 28% higher than control (Fardous et al, 2020).…”

Section: Introductionmentioning

confidence: 94%

Effect of Cow Urine on the Biochemical and Microbial Properties of Cow Dung Derived Biogas Slurry

Hoque

NASRIN²,

FARDOUS³

et al. 2022

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Biogas slurry (BGS) is an anaerobic digested organic material that can be used as an organic fertiliser. As cow urine (CU) is rich in plant nutrients, it may be used as diluting agent in biogas production to enhance the fertiliser quality of BGS. To explore the potency of CU on the fertiliser quality of BGS, four experimental trials were constructed by mixing cow dung (CD) and CU in varying proportion designated as T0 (50% CD + 50% Water) as control, T1 (50% CD + 50% CU), T2 (40% CD + 60% CU), T3 (30% CD + 70% CU) for biogas production. The quality of BGS was evaluated by studying its biochemical and microbial properties. The enzymatic activities revealed that all the CU amended samples showed better activities than control and were increased with the increase in CU. Compared to the control, the increase in urease, protease and phosphatase activities were 11.6% to 64.6%, 4.6% to 29.6% and 22.1% to 50.0%, respectively while cellulase activities were decreased from 25.9% to 3.1%. Most of the bacterial populations also increased in CU amended samples; total bacteria (TB) 20% to 60%, phosphate solubilizing bacteria (PSB) 33% to 67% and nitrogen fixing bacteria (NFB) 0% to 33%. Phytohormone, indole acetic acid (IAA) content and glycemic index (GI) were also increased with increase in CU (IAA- 23.5% to 59.5% and GI- 6.2% to 100.5%). With respect to all parameters analysed, CU amended samples can be considered superior to the control one except for their cellulase activities. Thus, utilization of cow urine improves the quality of BGS as organic fertiliser. This finding will help in reducing environmental pollution by utilizing hazardous cow urine as well as improving fertiliser quality of biogas slurry for agronomic use.

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“…4). It indicates that conductivity in the biogas slurry increases with the increase in urine as fermented cow urine is rich in different types of electrolyte [7]. Conductivity of solution indicates the presence of water soluble metal ions, including plant nutrients.…”

Section: Ph and Conductivitymentioning

confidence: 99%

“…5. As cattle urine is rich in nitrogen ranging from 6.8 to 21.6 g L -1 [7] its use increases nitrogen content in biogas slurry and accordingly the order total nitrogen was found to be T 1 >T 2 >T 3 >T 4 >T 5 >T 0 . N, P, K values of T 0 was comparable to the report by S. Suther [18].…”

Section: Macronutrients (N P K)mentioning

confidence: 99%

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Cow Urine for Enhancement of Biogas Production and Fertilizer Quality of Biogas Slurry

et al. 2020

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To explore the potency of cow urine on biogas production and fertilizer quality of the biogas slurries, six experimental trials, T0 (50% CD:50% Water) as control, T1 (10% CD:90% CU), T2 (20% CD:80% CU), T3 (30% CD:70% CU), T4 (40% CD:60% CU) and T5 (50% CD:50% CU) were constructed by mixing cow dung (CD) and cow urine (CU). Cumulative gas volume was estimated for 30 days and the physicochemical properties of the slurries were evaluated. The cumulative gas volume of three trials (T3, T4 and T5) was higher than control (T0) and T5 showed maximum (28% over the control). Moreover, all of the trials except one (T1) showed higher gas yield than control (T0) of which maximum conversion of volatile solid (VS) to gas was obtained in T3. pH of the amended samples were above 7.0 (pH 7.00-7.42). Conductivity of the samples also increases (1.94-13.40 mS cm-1) with the increase in cow urine percentage. With respect to macronutrient (N, P, K) cow urine amended samples can be considered superior to the control one. Moreover, C/N ratio of all the amended samples were below 15 (4.7-14.0) and thus these are suitable for agronomic uses.

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Determining Chemical Composition of Cattle Urine and Indigenous Plant Extracts

Cited by 6 publications

References 6 publications

Improvement of Biogas Quality and Quantity for Small-Scale Biogas-Electricity Generation Application in off-Grid Settings: A Field-Based Study

Improvement of Biogas Quality and Quantity for Small-Scale Biogas-Electricity Generation Application in off-Grid Settings: A Field-Based Study

Effect of Cow Urine on the Biochemical and Microbial Properties of Cow Dung Derived Biogas Slurry

Cow Urine for Enhancement of Biogas Production and Fertilizer Quality of Biogas Slurry

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