Anaerobic Co-Digestion of Oil Sludge with Corn Stover for Efficient Biogas Production

Qian Yang, Chenxi Zhang, Lei Li and Weijie Xu
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Qian Yang: College of Biological and Environmental Engineering, Binzhou University, Binzhou 256600, China
Chenxi Zhang: College of Biological and Environmental Engineering, Binzhou University, Binzhou 256600, China
Lei Li: College of Biological and Environmental Engineering, Binzhou University, Binzhou 256600, China
Weijie Xu: College of Biological and Environmental Engineering, Binzhou University, Binzhou 256600, China

Sustainability, 2020, vol. 12, issue 5, 1-9

Abstract: The feasibility of anaerobic co-digestion for the utilization of oil sludge was verified using corn stover, to assess the influence of different raw material ratios and inoculum volumes on the properties of the generated gas. The anaerobic co-digestion method is a novel treatment technology, which may help to solve the problem of pollution by hazardous waste oil sand from the oil exploitation and smelting process. Results showed that single-oil sludge was not suitable for gas production as a digestive substrate due to the lack of organic materials and possible hazardous materials. With the increase in the quality of exogenous organic matter (corn stover), the cumulative gas production volume was proportional to the amount of corn stover material added. It was established that when the mass ratio of corn stover to oil sludge was 4:1, the gas production performance was optimal, with a cumulative gas yield of 1222.5 mL using an inoculum volume of 30 mL. The results of this study provide a fundamental parameter baseline for the treatment of oil sludge and the improvement of gas production efficiency.

Keywords: oil sludge; corn stover; anaerobic co-digestion; biogas (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
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