Cattle rumen content, rice husk and cow horn biochars as amendments for enhanced remediation of petroleum-hydrocarbon-contaminated soil: physicochemical characterization and performance evaluation. Journal of the Nigerian Society of Physical Sciences, [S. l.], v. 8, n. 2, p. 3388, 2026. DOI: 10.46481/jnsps.2026.3388. Disponível em: https://journal.nsps.org.ng/index.php/jnsps/article/view/3388. Acesso em: 15 may. 2026.