Innovative nanocomposite formulations for enhancing biogas and biofertilizers production from anaerobic digestion of organic waste. (August 2020)

• Record Type: Journal Article
• Authors: Hassaneen, Fatma Y.; Abdallah, Muhammed S.; Ahmed, Nashaat; Taha, Manar M.; Abd ElAziz, Shereen Mohamed. M.; El-Mokhtar, Mohamed A.; Badary, Mohamed S.; Allam, Nageh K.
• Is Part Of: Bioresource technology. Volume 309(2020)
• Publication Date: 2020-08
• Subjects: Ferrites -- Carbon nanotubes -- Fullerene -- Nanoparticles -- Biogas -- Biofertilizer; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2020.123350
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Novel nanocomposite formulations have been synthesized and characterized. The maximum methane production enhancement was obtained for Zn-ferrite. ZFCNTs and ZFC76 increased the hydraulic retention time and methane production. The residual digestate showed the potential for use as a biofertilizer. Abstract: Herein, the design of nanocomposite (NC) formulations that consist of metal enzyme cofactors, highly conductive carbon materials, DIET activators, to boost AD biogas production from anaerobically incubated cattle manure are investigated and discussed. Three different NC formulations were designed and synthesized: zinc ferrite (ZnFe), ZnFe with 10% carbon nanotubes (ZFCNTs), and zinc ferrite with 10% C76 fullerene (ZFC76). The structure and morphology of the nano-additives were investigated via x-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive x-ray (EDX), and transmission electron microscopy (TEM). NCs were supplemented to lab-scale biodigesters containing organic slurry. Biogas production was monitored daily and compared to blank biodigesters for 50 days. The maximum methane enhancement was obtained for ZnFe, which promoted methane production to 185.3%. ZFCNTs and ZFC76 showed a positive impact on the hydraulic retention time and enhanced methane production to 162% and 145.9%, respectively compared to the blank reactors.