Industrial activities, particularly from abattoirs without effluent treatment facilities, threaten ecosystems, releasing a spectrum of potentially toxic elements (PTEs) into the environment. With a defunct wastewater treatment plant (WTP), exploring a low-cost but efficacious and eco-friendly adsorbent for a future effluent treatment facility for the Kumasi Abattoir Ghana (KAG) is warranted. The study is the first attempt to utilize the P-32 Powdered Activated Carbon (PAC) brand to detoxify PTEs—Cadmium (Cd), Copper (Cu), Zinc (Zn), Iron (Fe), and Lead (Pb)—in the KAG's effluent. The adsorbent was manufactured and supplied by the Climate/Environmental Research and Technology (CLERET) Laboratory, one of the Research and Development (R&D) departments of Explore Scientific Innovations (ESI) Ltd., in Ghana, using palm nutshell wastes as precursors. The study systematically evaluated the efficiency and adsorption prowess of the adsorbent using incremental masses of 0.5, 1.0, 1.5, 2, and 2.5 g for 100 ml effluent sample per adsorbent mass. Three replicates were used for each experimental unit. The PTE concentrations were determined using standard methods before and after applying the adsorbent. Three adsorption isotherm models Langmuir, Freundlich, and Elovich, were applied to investigate the adsorption mechanisms governing the PTEs. The model performance was evaluated using R2 and Root Mean Squared Error (RMSE) metrics. The findings unveiled varied percentage removal efficiencies (% Rs), with Zn exhibiting the highest (79.64%) at 2.5 g and Cd the least (7.8%) at 0.5 g, of the carbon. The Freundlich isotherm emerged as the most robust model, consistently exhibiting the highest R2 with the lowest RSME values. Fe and Cd had the highest and lowest adsorption capacity (Kf) of 0.181 and 0.001, respectively. The Freundlich exponent (nf) values were within the favorability range of 1-10. The PTE adsorptions were physical rather than chemical. P-32 PAC provided a promising avenue for abattoir effluent management.