Adsorpition and Kinetic Study for Removal Some Heavy Metals by Use in Activated Carbon of Sea Grasses

In this study Sea grasses were used to prepared active carbon by burned it in oven at 500 0C, for used it to removal some of metals solutions including Iron, Copper and Nickel. Different doses (0.1, 0.2, 0.3, 0.4 and 0.5 g) of activated carbon were applied, also the adsorption process was estimated at different times (15, 30, 45, 60, 75 and 90 min), the Langmuir and Frundlish isotherms were calculated. Also, the kinetic order of the adsorption was evaluated. The results of this study recoded different removal percentages of the applied dosages of activated carbon on the studied heavy metals, for the iron solutions, the higher removal percentage of (96 %) was observed after used (0.5 g) of adsorbent followed by dose of 0.1 which showed removal percentage of (70.80 %), meanwhile, the adsorbent dose of (0.1 g) recorded higher removal percentage of (80.71 %).For Nickel solutions the adsorbent dosage of (0.4 & 0.5 g) gave higher removal percentage (78.11 %) comparing with other doses used in this study. The adsorption isotherms of Langmuir and Frindulish were estimated by applied different times of (15, 30, 45, 60, 75 and 90 min), the Langmuir isothers of RL gave favorable adsorption, where the values of RL were 0.90, 0.547 and 0.19 for iron, copper and Nickel solutions, respectively and ranged between (0 – 1).On the other side the Frindulish isotherms showed different results, where the adsorption of metals selected in this study by activated carbon of sea grasses gave favorable results for iron and copper but unfavorable adsorption of Nickel.The kinetic of adsorption was calculated, the results recorded that the order rate of adsorption of metals selected in this study by sea grasses activated carbon follows first order.