Characterization of organic matter degradation during composting of manure-straw mixtures spiked with tetracyclines

► We investigated humification and mineralization of organic wastes during composting. ► More than 93% of tetracyclines was degraded during a 45-day composting. ► XRD spectra confirmed the natural formation of struvite during composting. ► Control the ammonia loss and fix soluble phosphorus during composting.