Biochar derived from pyrolysis of oily sludge waste: Structural characteristics and electrochemical properties

Journal of Environmental Management
Diandian BaoDuu-Jong Lee

Abstract

Oily sludge is the main hazardous waste produced by the petroleum industry, and its harmless disposal and recycling have become urgent problems. In this study, the pyrolysis technique was used to prepare oily sludge biochar at different temperatures (400 °C, 500 °C, 600 °C, and 700 °C). The characteristics of the biochar, including weight reduction, elemental composition, and molecular structure, were comprehensively investigated. From the perspective of the electrochemical properties of biochar, the relationship between the structure of the biochar and the redox capacity was discussed, and the feasibility of biochar as a battery cathode material was explored. The results suggested that the improper pyrolysis temperature could reduce the content of the quinone structure which was related to the redox capacity, the biochar prepared at 600 °C should have the strongest electron transfer capability. Moreover, the highest degree of condensation and aromaticity of pyrolysis products could be obtained at a higher pyrolysis temperature (700 °C), which might result in the relatively high discharge-charge capacity and good cycle performance of biochar which was used as an electrode material of a battery. This study explored the feasibili...Continue Reading

References

Jun 3, 2008·Journal of Hazardous Materials·Jianguo LiuZhigang Cui
Aug 18, 2009·Journal of Hazardous Materials·Ning XuXiaoping Lu
Dec 3, 2009·Environmental Science & Technology·Michael AeschbacherRené P Schwarzenbach
Jul 4, 2012·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Leonardo Jordão da SilvaFrancisca Pessôa de França
Nov 20, 2012·Advanced Materials·Jie SunXue Duan
Aug 28, 2013·Journal of Hazardous Materials·Guangji HuGuangming Zeng
Apr 23, 2014·Environmental Science & Technology·Laura KlüpfelMichael Sander
Mar 3, 2015·Journal of Environmental Management·Linbo QinFei Yu
Apr 20, 2018·Analytical Chemistry·Albert Rivas-UbachLjiljana Paša-Tolić

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Citations

Nov 19, 2020·Environmental Technology·Ziyi WangZhiwei Chu
Feb 12, 2021·Journal of Environmental Management·Diandian BaoXiang Liu
Jul 9, 2021·Environmental Technology·Zhiwei ChuGuoen Li

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