TY - JOUR
T1 - Enhancing methane production of co-digested food waste with granular activated carbon coated with nano zero-valent iron in an anaerobic digester
AU - Al-Hasani, Zahra
AU - Kumar Nayak, Jagdeep
AU - Alhimali, Halima
AU - Al-Mamun, Abdullah
N1 - Funding Information:
The authors wish to extend their appreciation to The Research Council (TRC), Oman for the financial support through the Fund (RC/RG-ENG/CAED/19/01). The authors also appreciate Sultan Qaboos University and Oman Water and Wastewater Service Company, Muscat, Oman, providing all the logistic and technical support for the research.
Funding Information:
The authors wish to extend their appreciation to The Research Council (TRC), Oman for the financial support through the Fund (RC/RG-ENG/CAED/19/01). The authors also appreciate Sultan Qaboos University and Oman Water and Wastewater Service Company, Muscat, Oman, providing all the logistic and technical support for the research.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/11
Y1 - 2022/11
N2 - Anaerobic digestion (AD) possesses dual benefits of waste treatment and energy generation. The use of conductive additives in AD matrix has potential to improve process yield. Hence, the study aimed to investigate a thermophilic AD (TAD) inserted by granular activated carbon coated with nano zero-valent iron (GAC/nZVI) in the matrix and was operated for mono-digestion and co-digestion of cow manure with food wastes (rice and bread) to check the bioprocess improvement. The results were compared with the control TAD without conductive additives. Biogas production increased by 11 folds upon using GAC/nZVI addition compared to the control TAD. Moreover, the addition of GAC/nZVI increased the methane in biogas by 20.7 folds compared to control one. With GAC/nZVI, the maximum COD removal of 78.29% and 85.21% were noticed for co-digestion and mono digestion, respectively. Such improvement of TAD performance was due to easy bacterial communication and electron exchange through the conductive particles.
AB - Anaerobic digestion (AD) possesses dual benefits of waste treatment and energy generation. The use of conductive additives in AD matrix has potential to improve process yield. Hence, the study aimed to investigate a thermophilic AD (TAD) inserted by granular activated carbon coated with nano zero-valent iron (GAC/nZVI) in the matrix and was operated for mono-digestion and co-digestion of cow manure with food wastes (rice and bread) to check the bioprocess improvement. The results were compared with the control TAD without conductive additives. Biogas production increased by 11 folds upon using GAC/nZVI addition compared to the control TAD. Moreover, the addition of GAC/nZVI increased the methane in biogas by 20.7 folds compared to control one. With GAC/nZVI, the maximum COD removal of 78.29% and 85.21% were noticed for co-digestion and mono digestion, respectively. Such improvement of TAD performance was due to easy bacterial communication and electron exchange through the conductive particles.
KW - Anaerobic digestion
KW - Biogas
KW - Conductive materials
KW - Methane generation
KW - Thermophilic anaerobic digestion
UR - http://www.scopus.com/inward/record.url?scp=85137754740&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85137754740&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2022.127832
DO - 10.1016/j.biortech.2022.127832
M3 - Article
C2 - 36029986
AN - SCOPUS:85137754740
SN - 0960-8524
VL - 363
JO - Bioresource Technology
JF - Bioresource Technology
IS - November2022
M1 - 127832
ER -
