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Updated: Jan 30, 2026

Extraction of Cofactor F420 for Analysis of Polyglutamate Tail Length from Methanogenic Pure Cultures and Environmental Samples
Published on: October 14, 2021
Nanoferrosonication: A novel strategy for intensifying the methanogenic process in sewage sludge
Alfredo Córdova Lizama1, Cristian Carrera Figueiras1, Liliana Alzate Gaviria2
1Facultad de Ingeniería Química, Universidad Autónoma de Yucatán, Campus de Ciencias Exactas e Ingenierías, Periférico Norte, Km. 33.5, Tablaje Catastral 13615, Col. Chuburná de Hidalgo Inn, C.P. 97203 Mérida, Yucatán, Mexico.
Abstract:
In this work, the effect of coupling ultrasonic pretreatment with dosing of zero-valent iron nanoparticles (nanoferrosonication, "NFS") to improve the anaerobic digestion of sewage sludge was studied. Biochemical methane potential tests were conducted at 15,000 and 25,000 kJ/kgTS and their combinations with 2 and 7 mgFe0/gVS. The biogas yield increased from 106 (control) to 143 (25,000 kJ/kgTS) and 308 mL/gVS with NFS (7 mgFe0/gVS + 15,000 kJ/kgTS). The methane content increased from 55.6 to 66%, and the maximum VS removal was 11.5% at 7 mgFe0/gVS + 15,000 kJ/kgTS. The results demonstrated that NFS was effective in intensifying the process.
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