AREMU OLUWATIMILEHIN G.; DR. M. AUTA. THERMAL PURIFICATION AND UTILIZATION OF PHOSPHOGYPSUM WASTE FOR PORTLAND CEMENT PRODUCTION. International Journal of Environmental Research and Earth Science, Nigeria, v. 2, n. 2, 2023. Disponível em: https://cambridgeresearchpub.com/ijeres/article/view/88.. Acesso em: 12 oct. 2025.