Inverse fluidized bed for chromium ions removal from wastewater and produced water using peanut shells as adsorbent

The primary objective of this research is Chromium ions removal from wastewater and produced water by peanut shell. This work is dealing with batch adsorption process, equilibrium isotherms, and inverse fluidized bed. The used processes are batch and inverse fluidized bed. Different quantities of peanut shell are used [2, 4, 8, 12, and 16) gm using a solution with an initial concentration of (100 mg/L), initial pH of (5.6) and particle size [2–3.35) mm. In the inverse fluidized bed mode, the effect of initial Chromium concentration, particle size, mass of adsorbent, liquid velocity, and chemical modification of peanut shell by nitric acid are examined. The results show that the peanut shell is an effective adsorbent for Chromium ions adsorption.