Author: S. Sundaranayagi, A. Sirajunnisa , S. Sarathkumar and Sk. Munimasthani

DOI: http://doi.org/10.31788/RJC.2023.1638011

This study focuses on intensifying biogas production through anaerobic digestion of press mud with the addition of synthesized iron oxide nanoparticles at various doses (30 milligrams per liter, 60 milligrams per liter, 90 milligrams per liter, and 120 milligrams per liter) at 38C in a laboratory-scale. The characterization of iron oxide nanoparticles was done using X-ray Diffraction and Fourier Transform Infrared Spectroscopy. Results revealed that the peak of biogas production reached 245 ml in the digester containing press mud with 90 mg/L of iron oxide nanoparticles. The kinetic modeling reveals that the modified Gompertz model and modified Logistic models fit excellently with the experimental curve of cumulative biogas production, with correlation coefficient (R2) values ranging from 0.9969 to 0.9986 and from 0.9987 to 0.9995, respectively.

Keywords: Press Mud, Iron Oxide Nanoparticles, X-Ray Diffraction, FTIR, Biogas, Anaerobic Digestion