en آموزش بهداشت Health Education پژوهشي Original Article <p dir="ltr" style="text-align: justify;"><b><i><font size="4"><font size="4"><font face="Times New Roman">Background and Purpose: </font></font></font></i></b><font size="3"><font size="3"><font face="Times New Roman">Phenol and derivatives are common pollutants of drinking water&nbsp;</font></font></font><span font-size:="" new="" style="font-family: " times="">which are blamed for crucial adverse effects such as poisoning, cancer, and malformation. In&nbsp;</span><span font-size:="" new="" style="font-family: " times="">this study, an activated carbon of Miswak&rsquo;s root (MR) was used for the removal of phenol from&nbsp;</span><span font-size:="" new="" style="font-family: " times="">aqueous solutions as a low-cost and high surface adsorbent.</span></p> <p dir="ltr" style="text-align: justify;"><b><i><font size="4"><font size="4"><font face="Times New Roman">Materials and Methods: </font></font></font></i></b><font size="3"><font size="3"><font face="Times New Roman">Adsorption experiments were then conducted in a batch reactor with&nbsp;</font></font></font><font size="3"><font size="3"><font face="Times New Roman">activated carbon prepared from MR and treated with KMnO</font></font></font><font size="1"><font face="Times New Roman" size="1">4 </font></font><font size="3"><font size="3"><font face="Times New Roman">to study the effects of contact time&nbsp;</font></font></font><span font-size:="" new="" style="font-family: " times="">(0-180 minutes), pH (3-13), initial phenol concentration (100-1000 mg/L), and adsorbent&nbsp;</span><font size="3"><font size="3"><font face="Times New Roman">dosage (0.1-1 g/L) at lab temperature 30 &plusmn; 1&deg; C on sorption efficiency. KMnO</font></font></font><font size="1"><font face="Times New Roman" size="1">4 </font></font><font size="3"><font size="3"><font face="Times New Roman">treatment&nbsp;</font></font></font><font size="3"><font size="3"><font face="Times New Roman">influenced the physicochemical properties of the carbon and improved its adsorption rate</font></font></font><font size="3"><font size="3"><font face="Times New Roman">.</font></font></font></p> <p dir="ltr" style="text-align: justify;"><b><i><font size="4"><font size="4"><font face="Times New Roman">Results: </font></font></font></i></b><font size="3"><font size="3"><font face="Times New Roman">The results showed that the equilibrium time of adsorption was 120 minutes maximum&nbsp;</font></font></font><span font-size:="" new="" style="font-family: " times="">adsorption capacity (94.76% phenol removed) of the MR carbon was 142.15 mg/g at pH 5, the&nbsp;</span><span font-size:="" new="" style="font-family: " times="">initial concentration of 100 mg/L, 30&deg; C and 180 minutes contact time. The optimum type of&nbsp;</span><span font-size:="" new="" style="font-family: " times="">MR adsorbent was produced in 800&deg; C. The equilibrium data were analyzed by the Langmuir&nbsp;</span><font size="3"><font size="3"><font face="Times New Roman">and Freundlich isotherms and fitted well with the Freundlich model (R</font></font></font><font size="1"><font face="Times New Roman" size="1">2 </font></font><font size="3"><font size="3"><font face="Times New Roman">= 0.9821) better than&nbsp;</font></font></font><font size="3"><font size="3"><font face="Times New Roman">Langmuir (R</font></font></font><font face="Times New Roman"><font size="1"><font size="1">2 </font></font><font size="3"><font size="3">= 0.7551) model.</font></font></font></p> <p dir="ltr" style="text-align: justify;"><b><i><font size="4"><font size="4"><font face="Times New Roman">Conclusion: </font></font></font></i></b><font face="Times New Roman"><font size="3"><font size="3">The results revealed that the carbon of MR modified with KMnO</font></font><font size="1"><font size="1">4 </font></font></font><font size="3"><font size="3"><font face="Times New Roman">had a&nbsp;</font></font></font><span font-size:="" new="" style="font-family: " times="">satisfactory quality in phenol adsorption and can well be used as a novel, inexpensive, effective,&nbsp;</span><span font-size:="" new="" style="font-family: " times="">and efficient adsorbent for the removal of phenol from the aquatic environment.</span></p> Salvadora Persica, Miswak’s Root, Adsorption, Freundlich, Phenol 20 30 http://jhs.mazums.ac.ir/browse.php?a_code=A-10-476-5&slc_lang=en&sid=1 Hamed Biglari 10031947532846004837 10031947532846004837 No Gonabad University of Medical Sciences Mojtaba Afsharnia 10031947532846004838 10031947532846004838 No Gonabad University of Medical Sciences Nasibe Javan 10031947532846004839 10031947532846004839 No Zahedan University of Medical Sciences, Zahedan, Iran Seyed Ali Sajadi sa_1344@hotmail.com 10031947532846004840 10031947532846004840 Yes Gonabad University of Medical Sciences