Optimization of biomethane production by anaerobic co-digestion of food waste with cow dung

Jonathan Bambokela Empompo, Glodi Niangi Mayala, Anthony Njuguna Matheri, Edison Muzenda, Mohamed Belaid

Research output: Contribution to conferencePaper

Abstract

The world today is in a constant quest of generating clean energy which would considerably reduce the emission of greenhouse gas (GHG) for better living conditions. In this study, a comparative analysis between anaerobic monodigestion and anaerobic co-digestion of food waste (FW) was conducted based on the following parameters; pH, carbon to nitrogen (C/N) ratio, total solids (TS) and volatile solids (VS) content. For anaerobic monodigestion FW alone was used as the substrate while for anaerobic co-digestion, two mixing ratios of FW with cow dung were used (2:1 and 1:2
respectively). Three digesters of 500 ml were used and placed into a water bath at 45°C through a Biochemical Methane
Potential (BMP) Test using the Automatic Methane Potential Test System II (AMPTS II). The anaerobic mono-digestion
of FW yielded 405.1 Nml of biomethane while the anaerobic co-digestion of FW with cow dung yielded 267.4 and 274.8
Nml at 2:1 and 1:2 mixing ratios correspondingly. The anaerobic co-digestion showed a significant decrease in the specific biogas production by 32.16 to 33.99% in comparison to anaerobic monodigestion. It was observed that the pH (7.21), C/N (31.41), TS (14.64%) and VS/TS (94.4%) of anaerobic mono-digestion of FW fell approximately and within
their respective optimum range, 6.5 – 7.5, 15 – 30, 15 – 20% and 82.4 – 95.3%. Hence, it produced the best biomethane yield. The objective of this study was to prove that anaerobic co-digestion of FW with cow dung would produce an
improved biogas yield as compared to anaerobic monodigestion.
Original languageEnglish
Number of pages6
Publication statusPublished - 2017
Event2nd International Engineering Conference 2017 - Minna, Nigeria
Duration: Oct 17 2017Oct 19 2017

Conference

Conference2nd International Engineering Conference 2017
Abbreviated titleIEC 2017
CountryNigeria
CityMinna
Period10/17/1710/19/17

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digestion
food
biogas
mixing ratio
nitrogen
carbon
greenhouse gas
methane
substrate
energy
water

Cite this

Empompo, J. B., Mayala, G. N., Matheri, A. N., Muzenda, E., & Belaid, M. (2017). Optimization of biomethane production by anaerobic co-digestion of food waste with cow dung. Paper presented at 2nd International Engineering Conference 2017, Minna, Nigeria.
Empompo, Jonathan Bambokela ; Mayala, Glodi Niangi ; Matheri, Anthony Njuguna ; Muzenda, Edison ; Belaid, Mohamed. / Optimization of biomethane production by anaerobic co-digestion of food waste with cow dung. Paper presented at 2nd International Engineering Conference 2017, Minna, Nigeria.6 p.
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Empompo, JB, Mayala, GN, Matheri, AN, Muzenda, E & Belaid, M 2017, 'Optimization of biomethane production by anaerobic co-digestion of food waste with cow dung' Paper presented at 2nd International Engineering Conference 2017, Minna, Nigeria, 10/17/17 - 10/19/17, .

Optimization of biomethane production by anaerobic co-digestion of food waste with cow dung. / Empompo, Jonathan Bambokela; Mayala, Glodi Niangi; Matheri, Anthony Njuguna; Muzenda, Edison; Belaid, Mohamed.

2017. Paper presented at 2nd International Engineering Conference 2017, Minna, Nigeria.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Optimization of biomethane production by anaerobic co-digestion of food waste with cow dung

AU - Empompo, Jonathan Bambokela

AU - Mayala, Glodi Niangi

AU - Matheri, Anthony Njuguna

AU - Muzenda, Edison

AU - Belaid, Mohamed

PY - 2017

Y1 - 2017

N2 - The world today is in a constant quest of generating clean energy which would considerably reduce the emission of greenhouse gas (GHG) for better living conditions. In this study, a comparative analysis between anaerobic monodigestion and anaerobic co-digestion of food waste (FW) was conducted based on the following parameters; pH, carbon to nitrogen (C/N) ratio, total solids (TS) and volatile solids (VS) content. For anaerobic monodigestion FW alone was used as the substrate while for anaerobic co-digestion, two mixing ratios of FW with cow dung were used (2:1 and 1:2respectively). Three digesters of 500 ml were used and placed into a water bath at 45°C through a Biochemical MethanePotential (BMP) Test using the Automatic Methane Potential Test System II (AMPTS II). The anaerobic mono-digestionof FW yielded 405.1 Nml of biomethane while the anaerobic co-digestion of FW with cow dung yielded 267.4 and 274.8Nml at 2:1 and 1:2 mixing ratios correspondingly. The anaerobic co-digestion showed a significant decrease in the specific biogas production by 32.16 to 33.99% in comparison to anaerobic monodigestion. It was observed that the pH (7.21), C/N (31.41), TS (14.64%) and VS/TS (94.4%) of anaerobic mono-digestion of FW fell approximately and withintheir respective optimum range, 6.5 – 7.5, 15 – 30, 15 – 20% and 82.4 – 95.3%. Hence, it produced the best biomethane yield. The objective of this study was to prove that anaerobic co-digestion of FW with cow dung would produce animproved biogas yield as compared to anaerobic monodigestion.

AB - The world today is in a constant quest of generating clean energy which would considerably reduce the emission of greenhouse gas (GHG) for better living conditions. In this study, a comparative analysis between anaerobic monodigestion and anaerobic co-digestion of food waste (FW) was conducted based on the following parameters; pH, carbon to nitrogen (C/N) ratio, total solids (TS) and volatile solids (VS) content. For anaerobic monodigestion FW alone was used as the substrate while for anaerobic co-digestion, two mixing ratios of FW with cow dung were used (2:1 and 1:2respectively). Three digesters of 500 ml were used and placed into a water bath at 45°C through a Biochemical MethanePotential (BMP) Test using the Automatic Methane Potential Test System II (AMPTS II). The anaerobic mono-digestionof FW yielded 405.1 Nml of biomethane while the anaerobic co-digestion of FW with cow dung yielded 267.4 and 274.8Nml at 2:1 and 1:2 mixing ratios correspondingly. The anaerobic co-digestion showed a significant decrease in the specific biogas production by 32.16 to 33.99% in comparison to anaerobic monodigestion. It was observed that the pH (7.21), C/N (31.41), TS (14.64%) and VS/TS (94.4%) of anaerobic mono-digestion of FW fell approximately and withintheir respective optimum range, 6.5 – 7.5, 15 – 30, 15 – 20% and 82.4 – 95.3%. Hence, it produced the best biomethane yield. The objective of this study was to prove that anaerobic co-digestion of FW with cow dung would produce animproved biogas yield as compared to anaerobic monodigestion.

M3 - Paper

ER -

Empompo JB, Mayala GN, Matheri AN, Muzenda E, Belaid M. Optimization of biomethane production by anaerobic co-digestion of food waste with cow dung. 2017. Paper presented at 2nd International Engineering Conference 2017, Minna, Nigeria.