Microbiome (16s rDNA ) of electric field-assisted aerobic composting
The study assessed the impact of varied doses of ferrous sulfate and biochar on sheep manure and straw composting, focusing on UV-visible spectra, excitation-emission matrix parallel factor, and two-dimensional Fourier transform infrared spectra correlation spectroscopy of dissolved organic matter (DOM) and microbial communities. The additive of 3% ferrous sulfate and 15% biochar notably enhanced DOM humification and aromatization, accelerating the early response of C-O-H and C-O functional groups compared to the control. Supplement of 3% ferrous sulfate and 15% biochar exhibited a more robust bacterial community network, highlighted by Chryseolinea and Thermopolyspora as pivotal taxa in DOM aromatization and humification. Thermobifida and Thermopolyspora likely contribute to humus precursor formation. This research strives to optimize electric field-assisted aerobic composting for solid waste recycling.