TY - JOUR
T1 - Enhancement of bioaromatics production from food waste through catalytic pyrolysis over Zn and Mo-loaded HZSM-5 under an environment of decomposed methane
AU - Moogi, Surendar
AU - Pyo, Sumin
AU - Farooq, Abid
AU - Valizadeh, Soheil
AU - Jun Choi, Yong
AU - Hoon Rhee, Gwang
AU - Lee, Jechan
AU - Jae, Jungho
AU - Hussain, Murid
AU - Ali Khan, Moonis
AU - Jeon, Byong Hun
AU - Andrew Lin, Kun Yi
AU - Chen, Wei Hsin
AU - Park, Young Kwon
N1 - Funding Information:
This work was supported by National Research Foundation of Korea (NRF-2021R1A2C3011274). Moonis Ali Khan acknowledges the financial support through Researchers Supporting Project number (RSP2021/345), King Saud University, Riyadh, Saudi Arabia.
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/10/15
Y1 - 2022/10/15
N2 - Herein, catalytic effects of Zn and Mo-loaded HZSM-5 on pyrolysis of food waste (FW) under methane (CH4) and a hydrogen (H2)-rich gas stream derived from catalytic CH4 decomposition (CH4-D) over a Ni–La2O3–CeO2/Al2O3 were explored as a method to produce high-value biochemicals such as benzene, toluene, ethylbenzene, and xylenes (BTEX). The CH4-D pyrolysis medium led to a higher BTEX yield than a typical pyrolysis medium (e.g., nitrogen) and CH4 medium because it provided a H2-rich environment during the FW pyrolysis (e.g., H2/CO2 ratio = 1.01), thereby facilitating hydropyrolysis and hydrodeoxygenation of pyrolytic vapors evolved from FW. The H2-rich environment also helped to reduce coke deposition on the catalyst. Under CH4-D environment, a bimetallic Zn–Mo catalyst supported on HZSM-5 (Zn–Mo/HZSM-5) maximized the BTEX yield (19.93 wt%) compared to HZSM-5 and monometallic Zn and Mo catalysts. This is most likely because the bimetallic catalyst possessed the highest number of total acid sites among all the tested catalysts. The high acidity and H2-rich media (CH4-D) synergistically promoted aromatization, hydrodeoxygenation, and hydrodealkylation reactions, which enhanced the BTEX yield. The Zn–Mo/HZSM-5-catalyzed FW pyrolysis under CH4-D environment would be an eco-friendly and sustainable strategy to transform unmanageable organic waste (e.g., FW) into high-value biochemicals such as bioaromatics.
AB - Herein, catalytic effects of Zn and Mo-loaded HZSM-5 on pyrolysis of food waste (FW) under methane (CH4) and a hydrogen (H2)-rich gas stream derived from catalytic CH4 decomposition (CH4-D) over a Ni–La2O3–CeO2/Al2O3 were explored as a method to produce high-value biochemicals such as benzene, toluene, ethylbenzene, and xylenes (BTEX). The CH4-D pyrolysis medium led to a higher BTEX yield than a typical pyrolysis medium (e.g., nitrogen) and CH4 medium because it provided a H2-rich environment during the FW pyrolysis (e.g., H2/CO2 ratio = 1.01), thereby facilitating hydropyrolysis and hydrodeoxygenation of pyrolytic vapors evolved from FW. The H2-rich environment also helped to reduce coke deposition on the catalyst. Under CH4-D environment, a bimetallic Zn–Mo catalyst supported on HZSM-5 (Zn–Mo/HZSM-5) maximized the BTEX yield (19.93 wt%) compared to HZSM-5 and monometallic Zn and Mo catalysts. This is most likely because the bimetallic catalyst possessed the highest number of total acid sites among all the tested catalysts. The high acidity and H2-rich media (CH4-D) synergistically promoted aromatization, hydrodeoxygenation, and hydrodealkylation reactions, which enhanced the BTEX yield. The Zn–Mo/HZSM-5-catalyzed FW pyrolysis under CH4-D environment would be an eco-friendly and sustainable strategy to transform unmanageable organic waste (e.g., FW) into high-value biochemicals such as bioaromatics.
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U2 - 10.1016/j.cej.2022.137215
DO - 10.1016/j.cej.2022.137215
M3 - Article
AN - SCOPUS:85131958787
VL - 446
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
M1 - 137215
ER -