Enhancing phosphorus recovery from poultry litter ash through microwave-assisted thermochemical treatment for improving its solubility
Makaleler > Tam Makale · 2025
Yazarlar: Ario Fahimi, Mattia Massa, Elsayed Mousa, Guozhu Ye, Georgeta Predeanu, Hayati OLGUN, Seyedkamal Mousavinezhad, Ehsan Vahidi, Bruno Valentim, Barbara Białecka, Elza Bontempi
Journal of Environmental Management, Uluslararası, Wos, 2025, cilt 379, ss 124802-124802
DOI: 10.1016/j.jenvman.2025.124802
Özet
This study explores for the first time the P recovery from poultry litter ash (PLA) using microwave-assisted thermochemical treatment, aiming to improve its bioavailability for utilization as a fertilizer. PLA samples, originating from laying hens’ manure incineration, were subjected to microwave treatment with the addition of sodium bicarbonate, and their physical-chemical characteristics were analyzed using X-ray fluorescence (XRF), X-ray diffraction (XRD), and scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS). The results indicate that the microwave treatment led to the formation of NaCaPO 4 crystals, with a significant increase in P solubility post-treatment, which is crucial for plant uptake. Moreover, increasing the amorphous content of the ash led to a decrease in P solubility because sodium atoms tend to diffuse within the silica network. However, in this case, interesting glass materials with promising optical properties may be obtained. This study provides a novel approach to valorizing biowaste and contributes to sustainable phosphorus management practices. • Enhanced phosphorus recovery from poultry litter ash using microwave-assisted treatment. • Combines sodium bicarbonate and anthracite for optimal phosphorus recovery. • Formation of NaCaPO 4 crystals significantly improves phosphorus solubility. • Sustainable process contributes to waste valorization and phosphorus recycling.