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Low-temperature pyrolysis of oily sludge: roles of Fe/Al-pillared bentonites
Jia, HZ (Jia, Hanzhong); Zhao, S (Zhao, Song); Zhou, XH (Zhou, Xiehong); Qu, CT (Qu, Chengtun); Fan, DD (Fan, Daidi); Wang, CY (Wang, Chuanyi)
2017
Source PublicationARCHIVES OF ENVIRONMENTAL PROTECTION
Volume43Issue:3Pages:82-90
Abstract

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, N-2 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.

KeywordPyrolysis Oily Sludge Fe/al Pillared Bentonites Aliphatic Hydrocarbons Lewis Acidity
DOI10.1515/aep-2017-0027
Indexed BySCI
WOS IDWOS:000410003100010
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Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/5042
Collection环境科学与技术研究室
Affiliation1.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Beijing, Peoples R China
2.Northwest Univ, Sch Chem Engn, Xian, Shaanxi, Peoples R China
3.Xian Shiyou Univ, Sch Chem & Chem Engn, Xian, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Jia, HZ ,Zhao, S ,Zhou, XH ,et al. Low-temperature pyrolysis of oily sludge: roles of Fe/Al-pillared bentonites[J]. ARCHIVES OF ENVIRONMENTAL PROTECTION,2017,43(3):82-90.
APA Jia, HZ ,Zhao, S ,Zhou, XH ,Qu, CT ,Fan, DD ,&Wang, CY .(2017).Low-temperature pyrolysis of oily sludge: roles of Fe/Al-pillared bentonites.ARCHIVES OF ENVIRONMENTAL PROTECTION,43(3),82-90.
MLA Jia, HZ ,et al."Low-temperature pyrolysis of oily sludge: roles of Fe/Al-pillared bentonites".ARCHIVES OF ENVIRONMENTAL PROTECTION 43.3(2017):82-90.
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