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Hydrothermal carbonization of sewage sludge: Effect of feed-water pH on hydrochar's physicochemical properties, organic component and thermal behavior.
J Hazard Mater 2020; 388:122084JH

Abstract

In this study, hydrothermal carbonization (HTC) of sewage sludge(SS) was carried out at a temperature of 270℃ and a resulting pressure of 7-9 MPa with 2 h. The effect of feed water pH values in the range of 2-12 on hydrochar characteristics, organic component and thermal behavior was evaluated. The result shows that with the pH value increasing, ash content shows a trend of decline, and organic components in the hydrochar become significantly simpler than SS. hydrochar is more beneficial to produce a fatty substance during an acidic environment and alkaline environments favor the formation of N-containing organic compounds and ketone organics, especially in strongly alkaline environments. Compared to the SS, hydrochar burning interval shortened 100℃ and the combustion of hydrochar is more durable. Considering the organic composition and combustion performance of hydrochar, it is found that the hydrochar prepared under 270-5 condition has the best effect.

Authors+Show Affiliations

College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China. Electronic address: ybzhai@hnu.edu.cn.College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31972434

Citation

Liu, Xiangmin, et al. "Hydrothermal Carbonization of Sewage Sludge: Effect of Feed-water pH On Hydrochar's Physicochemical Properties, Organic Component and Thermal Behavior." Journal of Hazardous Materials, vol. 388, 2020, p. 122084.
Liu X, Zhai Y, Li S, et al. Hydrothermal carbonization of sewage sludge: Effect of feed-water pH on hydrochar's physicochemical properties, organic component and thermal behavior. J Hazard Mater. 2020;388:122084.
Liu, X., Zhai, Y., Li, S., Wang, B., Wang, T., Liu, Y., ... Li, C. (2020). Hydrothermal carbonization of sewage sludge: Effect of feed-water pH on hydrochar's physicochemical properties, organic component and thermal behavior. Journal of Hazardous Materials, 388, p. 122084. doi:10.1016/j.jhazmat.2020.122084.
Liu X, et al. Hydrothermal Carbonization of Sewage Sludge: Effect of Feed-water pH On Hydrochar's Physicochemical Properties, Organic Component and Thermal Behavior. J Hazard Mater. 2020 Jan 13;388:122084. PubMed PMID: 31972434.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Hydrothermal carbonization of sewage sludge: Effect of feed-water pH on hydrochar's physicochemical properties, organic component and thermal behavior. AU - Liu,Xiangmin, AU - Zhai,Yunbo, AU - Li,Shanhong, AU - Wang,Bei, AU - Wang,Tengfei, AU - Liu,Yali, AU - Qiu,Zhenzi, AU - Li,Caiting, Y1 - 2020/01/13/ PY - 2019/06/11/received PY - 2019/12/21/revised PY - 2020/01/12/accepted PY - 2020/1/24/pubmed PY - 2020/1/24/medline PY - 2020/1/24/entrez KW - Hydrochar KW - Organic component KW - Sewage sludge KW - Thermal behavior KW - pH SP - 122084 EP - 122084 JF - Journal of hazardous materials JO - J. Hazard. Mater. VL - 388 N2 - In this study, hydrothermal carbonization (HTC) of sewage sludge(SS) was carried out at a temperature of 270℃ and a resulting pressure of 7-9 MPa with 2 h. The effect of feed water pH values in the range of 2-12 on hydrochar characteristics, organic component and thermal behavior was evaluated. The result shows that with the pH value increasing, ash content shows a trend of decline, and organic components in the hydrochar become significantly simpler than SS. hydrochar is more beneficial to produce a fatty substance during an acidic environment and alkaline environments favor the formation of N-containing organic compounds and ketone organics, especially in strongly alkaline environments. Compared to the SS, hydrochar burning interval shortened 100℃ and the combustion of hydrochar is more durable. Considering the organic composition and combustion performance of hydrochar, it is found that the hydrochar prepared under 270-5 condition has the best effect. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/31972434/Hydrothermal_carbonization_of_sewage_sludge:_Effect_of_feed-water_pH_on_hydrochar's_physicochemical_properties,_organic_component_and_thermal_behavior L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(20)30070-4 DB - PRIME DP - Unbound Medicine ER -