The effect of substrate to inoculum ratios on the anaerobic digestion of human faecal material

Lancaster Environment Centre

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https://doi.org/10.1016/j.eti.2015.02.005
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Keywords

Methane yield, Anaerobic digestion, Human faecal material, Pathogen reduction

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The effect of substrate to inoculum ratios on the anaerobic digestion of human faecal material. / Fagbohungbe, Michael O.; Herbert, Ben M. J.; Li, Hong et al.
In: Environmental Technology and Innovation, Vol. 3, 04.2015, p. 121-129.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{7fd9eba33bf144f397383f8566798d84,

title = "The effect of substrate to inoculum ratios on the anaerobic digestion of human faecal material",

abstract = "The anaerobic digestion (AD) of human faecal material (HFM) was investigated to consider the effect different substrate to inoculum ratios (SIR) from 0.5 to 4on the rate and extent of methane production as well as impact on pathogen numbers. The AD process was monitored by measuring pH, total volatile fatty acid, bicarbonate alkalinity, ammonium and methane production. The results showed that the highest amounts of methane production with a value of 254.4 ±12.6 ml CH4gV S−1added and highest pathogen removal with a value of 2.7×104±40 and 2.5×103±0.5 CFU/ml, respectively, for E.coli and faecal coliform bacteria was achieved by the 0.5 SIR incubation. However, the highest organic loading found in the 4.0SIR incubation showed the lowest methane yield with a value of110 ±1.3 ml CH4gV S−1added and the lowest pathogen removal with a value of 3.2×105±19 and 3.2×104±3.5 CFU/ml, respectively for E.coli and faecal coliform bacteria. The empirical equation was used to calculate the theoretical methane and compare this with the actual values of methane production. The relatively high methane conversion efficiency between theoretical and actual values for 0.5 SIR, further suggest that this operational condition was the most effective.",

keywords = "Methane yield, Anaerobic digestion, Human faecal material, Pathogen reduction",

author = "Fagbohungbe, {Michael O.} and Herbert, {Ben M. J.} and Hong Li and Lois Ricketts and Semple, {Kirk T.}",

year = "2015",

month = apr,

doi = "10.1016/j.eti.2015.02.005",

language = "English",

volume = "3",

pages = "121--129",

journal = "Environmental Technology and Innovation",

issn = "2352-1864",

publisher = "Elsevier BV",

}

RIS

TY - JOUR

T1 - The effect of substrate to inoculum ratios on the anaerobic digestion of human faecal material

AU - Fagbohungbe, Michael O.

AU - Herbert, Ben M. J.

AU - Li, Hong

AU - Ricketts, Lois

AU - Semple, Kirk T.

PY - 2015/4

Y1 - 2015/4

N2 - The anaerobic digestion (AD) of human faecal material (HFM) was investigated to consider the effect different substrate to inoculum ratios (SIR) from 0.5 to 4on the rate and extent of methane production as well as impact on pathogen numbers. The AD process was monitored by measuring pH, total volatile fatty acid, bicarbonate alkalinity, ammonium and methane production. The results showed that the highest amounts of methane production with a value of 254.4 ±12.6 ml CH4gV S−1added and highest pathogen removal with a value of 2.7×104±40 and 2.5×103±0.5 CFU/ml, respectively, for E.coli and faecal coliform bacteria was achieved by the 0.5 SIR incubation. However, the highest organic loading found in the 4.0SIR incubation showed the lowest methane yield with a value of110 ±1.3 ml CH4gV S−1added and the lowest pathogen removal with a value of 3.2×105±19 and 3.2×104±3.5 CFU/ml, respectively for E.coli and faecal coliform bacteria. The empirical equation was used to calculate the theoretical methane and compare this with the actual values of methane production. The relatively high methane conversion efficiency between theoretical and actual values for 0.5 SIR, further suggest that this operational condition was the most effective.

AB - The anaerobic digestion (AD) of human faecal material (HFM) was investigated to consider the effect different substrate to inoculum ratios (SIR) from 0.5 to 4on the rate and extent of methane production as well as impact on pathogen numbers. The AD process was monitored by measuring pH, total volatile fatty acid, bicarbonate alkalinity, ammonium and methane production. The results showed that the highest amounts of methane production with a value of 254.4 ±12.6 ml CH4gV S−1added and highest pathogen removal with a value of 2.7×104±40 and 2.5×103±0.5 CFU/ml, respectively, for E.coli and faecal coliform bacteria was achieved by the 0.5 SIR incubation. However, the highest organic loading found in the 4.0SIR incubation showed the lowest methane yield with a value of110 ±1.3 ml CH4gV S−1added and the lowest pathogen removal with a value of 3.2×105±19 and 3.2×104±3.5 CFU/ml, respectively for E.coli and faecal coliform bacteria. The empirical equation was used to calculate the theoretical methane and compare this with the actual values of methane production. The relatively high methane conversion efficiency between theoretical and actual values for 0.5 SIR, further suggest that this operational condition was the most effective.

KW - Methane yield

KW - Anaerobic digestion

KW - Human faecal material

KW - Pathogen reduction

U2 - 10.1016/j.eti.2015.02.005

DO - 10.1016/j.eti.2015.02.005

M3 - Journal article

VL - 3

SP - 121

EP - 129

JO - Environmental Technology and Innovation

JF - Environmental Technology and Innovation

SN - 2352-1864

ER -

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