TY - JOUR N2 - Pyrolysis is potentially an effective treatment of oily sludge for oil recovery, and the addition of a catalyst is expected to affect its pyrolysis behavior. In the present study, Fe/Al-pillared bentonite with various Fe/Al ratios as pyrolysis catalyst is prepared and characterized by XRD, N2 adsorption, and NH3-TPD. The integration of Al and Fe in the bentonite interlayers to form pillared clay is evidenced by increase in the basal spacing. As a result, a critical ratio of Fe/Al exists in the Fe/Al-pillared bentonite catalytic pyrolysis for oil recovery from the sludge. The oil yield increases with respect to increase in Fe/Al ratio of catalysts, then decreases with further increasing of Fe/Al ratio. The optimum oil yield using 2.0 wt% of Fe/Al 0.5-pillared bentonite as catalyst attains to 52.46% compared to 29.23% without catalyst addition in the present study. In addition, the addition of Fe/Al-pillared bentonite catalyst also improves the quality of pyrolysis-produced oil and promotes the formation of CH4. Fe/Al-pillared bentonite provides acid center in the inner surface, which is beneficial to the cracking reaction of oil molecules in pyrolysis process. The present work implies that Fe/Al-pillared bentonite as addictive holds great potential in industrial pyrolysis of oily sludge. L1 - http://journals.pan.pl/Content/102536/PDF/aep-2017-0027.pdf L2 - http://journals.pan.pl/Content/102536 PY - 2017 IS - No 3 DO - 10.1515/aep-2017-0027 KW - pyrolysis KW - oily sludge KW - Fe/Al pillared bentonites KW - aliphatic hydrocarbons KW - Lewis acidity A1 - Jia, Hanzhong A1 - Zhao, Song A1 - Zhou, Xiehong A1 - Qu, Chengtun A1 - Fan, Daidi A1 - Wang, Chuanyi PB - Polish Academy of Sciences VL - vol. 43 DA - 2017.09.30 T1 - Low-temperature pyrolysis of oily sludge: roles of Fe/Al-pillared bentonites UR - http://journals.pan.pl/dlibra/publication/edition/102536 T2 - Archives of Environmental Protection ER -