Determining the biomethane potential of petrochemical sludge after pre-treatment

Utilizing renewable energy sources has grown in importance in the modern era, particularly in light of the circular economy and sustainability ideas. Biogas is one type of renewable energy source. In addition to being a renewable energy source, biogas generation helps reduce the negative environmental and health effects of the wastes that are disposed of during anaerobic digestion operations. Especially in recent years, the increasing energy need and the use of petroleum-derived materials in energy needs constitute the thesis subject of this study. The main objective of this study was to determine the biogas production potential of pre-treated petrochemical industry wastewater sludge using batch reactors. Biogas tests were examined in two separate parts by evaluating ozone, ultrasound pre-treatment techniques and co-digestion options. In the first part, 27-day and 29-day anaerobic digestion processes were applied in the second part. Heavy metal analyses, TS, TVS, COD, pH parameters were constantly checked throughout the processes. In the first part, the highest biogas production was observed in the in parallel 1 of the second reactor with 6 mL methane /g TSadded. In the second part, the highest biogas production was achieved in the second parallel of the eighth reactor, with 35 mL methane /g TSadded. The reactor with the highest gas production was the hybrid (HYB) reactor and 65 mL biogas /g TSadded production was observed.