| Popis: |
Today, oil pollution is a major problem that harm our environment. In this paper, the application of Casuarina Equisetifolia needle as an adsorbent for oil removal was studied. The Casuarina Equisetifolia needle were experimented to adsorb two categories of oil which are heavy and light oil. Light oil which are petrol and diesel while heavy oil are lubricant and used vegetable oil (UVO). There are three types of adsorbent used which are untreated, treated with sodium hydroxide (NaOH) and treated with hydrochloric acid (HCl). The adsorbents were treated with NaOH and HCl in order to increase the efficiency of oil adsorption because when it is already treated, the lumen or the pore size will increase. The objective of our study is to evaluate the performance of using Casuarina Equisetifolia needle in removing heavy and light oil waste from water. Next, the Casuarina Equisetifolia needle also experimented in oil retention, percentage of oil removal and reusability of it usage in oil absorption. In oil dynamic retention capacities at lowest packing density 0.002 g/cm3 for natural, NaOH treated and HCl treated were 33.80%, 31.14% and 31.1% respectively. While for highest packing density 0.009 g/cm3 for natural,NaOH treated and HCl treated were 77.61%, 10.37% and 7.91% respectively. The lowest packing density is better than high packing density because the result shown the stabilization of percentage of dynamic oil retention for treated adsorbents. For oil percentage removal, the results for the lowest mass which is 0.2g for natural, NaOH treated and HCl treated were 700%, 632% and 600% respectively. While for highest mass which is 1.0g for natural, NaOH treated and HCl treated were 106%, 200% and 165% respectively. In adsorbent reusability, the experiment showed the ability of Casuarina Equisetifolia needle for continuous absorption process which continuously occur for five stages in petrol, lubricant and UVO while four stages in diesel. In the conclusion, Casuarina Equisetifolia needle are effective and suitable as a natural adsorbent in removing oil. |
