Uptake of Trivalent Chromium from Simulated Wastewater Using Activated Carbonation of Date Pit Sorbent, Kinetics, and Material Characterization

Abstract

The objective of the current investigation is to determine if it is feasible to capture and stabilize chromium ions in simulated wastewater utilizing trash in the form of date pits. The beginning pH range (3-6), initial pollutant concentration (25-125 mg/L), sorbent dosage (0.5-2) g, and agitation speed (50-250 rpm) were among the examined batch balance parameters. At a pH of 6, a toxin concentration of 25 mg/L at first, and an agitation speed of 250 rpm, the maximum contaminant elimination efficiency of (95%) was attained. For Cr (III) removal with activated carbonation of date pit (ACDP) adsorbent, the sips model was found to be the most fitted isotherm model during batch experiments with a corresponding factor R2 of (0.9996). Kinetic outcomes exposed an acceptable contract among the theoretical and experimental results; the findings were close-fitted with the kinetic model of pseudo-second-order which means that the dominant mechanism during the sorption process is a chemisorption.