Duwiejuah, A. B., et al. “Simultaneous Adsorption of Nickel, Cadmium, Nitrate and Phosphate from Abattoir Wastewater Using Biowaste Biochars: Adsorption of Nickel, Cadmium, Nitrate and Phosphate from Abattoir Wastewater”. Journal of Biological Research and Biotechnology, vol. 24, no. 1, May 2026, pp. 289-97, https://doi.org/10.4314/br.v24i1.3.