A. Hassan, “Antimicrobial and Anticancer Activities of Ricinus Communis Biochar and its Composites with ZnO and CuO Nanoparticles for Chromium Contaminated Water”, IJBR, vol. 3, no. 8, pp. 178–183, Aug. 2025, doi: 10.70749/ijbr.v3i8.2069.