NITRATE REMOVAL FROM AQUEOUS SOLUTIONS WITH SOME ECO-FRIENDLY ADSORBENT MATERIALS

In the current study, Eco-friendly adsorption materials were used for nitrate removal from aqueous solutions, user-friendly adsorption media for nitrate removal from water, surfactant modified was evaluated as a potential adsorption media for this purpose. The study used batch experiments at laboratory of Faculty of Agricultural Environmental Science Arish University. Therefore, residual olive wood-derived biochars (Bl), Olive pomace (BW) and modified zeolite (ZE), were used as adsorbent substances. The effect of different nitrate concentrations (1.0, 1.5 and 2.0 mMl^-1) at contact time intervals (30, 60, 90,180,360 and 1440 min) and pH values (4.0, 7.0 and 10.0) on the removal of nitrate was investigated in batch experiment. Residual olive wood-derived biochars (Bl) recorded the highest removal percentages values of nitrate (98.9%) at initial concentrate 2.0mMl^-1, compare with two studied prepared, followed by (BW) 93.9% and (ZE) 89.5%. Nitrate removal rate were superior under high nitrate concentration pH value 4 with all studied adsorapent substances at different magnitudes recorded the highest removal percentages values of nitrate (Bl) 99.9%, (BW) 94.8% and (ZE) 90.4 %, respectively. At the same time, nitrate removal percentage rates were low during the initial period of the experiment then the rate was high. This study suggests that could nitrate and any pollution elements be removed from water using biochars. The pollution water elements concentration, contact time and pH are impact on the efficacy of such adsorbents as removal pollution elements from water.