HomeIngredientAssessment of sludge reduction and biogas production in two-step anaerobic co-digestion using sesame oil cake and sewage sludge

Assessment of sludge reduction and biogas production in two-step anaerobic co-digestion using sesame oil cake and sewage sludge

October 19, 2022

Water Sci Technol. 2022 Oct;86(7):1693-1706. doi: 10.2166/wst.2022.294.

ABSTRACT

The aim of this study was to investigate the sewage sludge reduction and biogas production using two-stage anaerobic co-digestion of sesame oil cake and sewage sludge. In the first stage (acidogenic fermentation), sesame oil cake (SOC) was acidogenic fermented to produce fermented sesame oil cake (FSOC). In the second step (anaerobic co-digestion), sewage sludge and FSOC were mixed in various ratios of (100:0 (R1), 70:30 (R2), 50:50 (R3), and 30:70 (R4)) and observed for 30 days at a mesophilization temperature of 35±2 °C. In the anaerobic co-digestion using FSOC as a co-feedstock, the volatile solids (VS) and total solids (TS) removal were in the range of 53.7-64.9 and 42.6-53.2% for R2 and R3, respectively. The highest cumulative biogas production (389.67 mL/g·VSin) and methane production (0.56 m3·CH4/kg·VS) was achieved with the R3. In addition, R3 had the shortest reaction delay time (λ), and stabilization of the process was the fastest of all samples. The co-digestion performance index (CPI) was determined to be 1.29, 1.39, and 1.10 for R2, R3, and R4, respectively. The highest value for R3 confirmed the highest synergistic effect. This suggests the possibility of biogas production using sesame oil cake.

PMID:36240305 | DOI:10.2166/wst.2022.294

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Patrick Blanchard MD

Meet Dr. Blanchard Dr. Blanchard’s medical practice is an embodiment of Integrative health which brings conventional and complementary approaches together in a coordinated way. Conveniently located in sunny Florida and over the internet with ValiseMD’s secure HIPPA compliant telXmed servers. Since 1994, patients with a wide range of challenging medical problems have achieved optimum health using the best of natural medicine, judiciously combined with high-tech innovations. Breakthroughs are often achieved even after patients have consulted mainstream specialists and holistic practitioners. Dr. Blanchard is founder and CEO of ValiseMD, Inc. He is board certified in Family Medicine since 1994 and awarded Fellow of the American Academy of Family Physicians in 2001. He received the ‘Teacher of the Year’ award from the University of Kansas School of Medicine at completion of his residency in Family Medicine. He completed a fellowship at Wake Forest University in the field of vascular neurosonology. He holds a medical patent in the field of Gastroenterology. He holds an unrestricted license to practice medicine and surgery in Florida. He started his medical career as a Emergency Medical Technician, then as a Paramedic and later a Medical Doctor.