M. G. Adonadaga, A. T. Anemana, W. M. Ayeriga, S. Ampofo, and M. A. Alua, “Physiochemical, Structural Characteristics and Effect of Temperature on Coconut Husk Biochar’s Immobilization and Plant Phytoavailability of Chromium in Different Soils”, jasem, vol. 30, no. 8, pp. 2685–2693, Aug. 2026.