TY - JOUR
T1 - Introducing new monitoring indices from the headspace of biogas digester via e-nose
T2 - A case study
AU - Savand-Roumi, Ehsan
AU - Mohtasebi, Seyed Saeid
AU - Rafiee, Shahin
AU - Ghanavati, Hossein
AU - Khoshnevisan, Benyamin
N1 - Funding Information:
This work was supported by the University of Tehran Science & Technology Park (Project No. 5884203). We would like to thank the University of Tehran, Agriculture Machinery Faculty.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/2/28
Y1 - 2022/2/28
N2 - This study focused on the monitoring of a biogas digester (BD) for treatment of food waste using an e-nose system. The e-nose system along with Principal Component Analysis (PCA) were applied to monitor the gaseous headspace of a mesophilic BD. In this method the digester was allowed to feed based on monitoring indices, i.e. “recovery time” and “position of sensors”, using e-nose data analysis. The results showed that the digester can be kept under the steady-state condition and good performance during evaluation phase, as organic acids to total alkalinity (FOS/TAC) was 0.2–0.3, pH was stabilized near to 8, the mean of volatile solids reduction and the daily methane production rate were 82% and 1.24 Nm3/m3 d, respectively. This study presents a robust monitoring of BD based on an adaptable reference point and graphical monitoring on plots of PCA that make it more flexible than the classical parameter monitoring with determined threshold.
AB - This study focused on the monitoring of a biogas digester (BD) for treatment of food waste using an e-nose system. The e-nose system along with Principal Component Analysis (PCA) were applied to monitor the gaseous headspace of a mesophilic BD. In this method the digester was allowed to feed based on monitoring indices, i.e. “recovery time” and “position of sensors”, using e-nose data analysis. The results showed that the digester can be kept under the steady-state condition and good performance during evaluation phase, as organic acids to total alkalinity (FOS/TAC) was 0.2–0.3, pH was stabilized near to 8, the mean of volatile solids reduction and the daily methane production rate were 82% and 1.24 Nm3/m3 d, respectively. This study presents a robust monitoring of BD based on an adaptable reference point and graphical monitoring on plots of PCA that make it more flexible than the classical parameter monitoring with determined threshold.
KW - Biogas digester
KW - E-nose
KW - Food waste
KW - Monitoring
U2 - 10.1016/j.measurement.2022.110769
DO - 10.1016/j.measurement.2022.110769
M3 - Journal article
AN - SCOPUS:85123677026
SN - 0263-2241
VL - 190
JO - Measurement: Journal of the International Measurement Confederation
JF - Measurement: Journal of the International Measurement Confederation
M1 - 110769
ER -