MODIFICATION OF BARLEY STRAW BY ACID HYDROLYSIS TO BE USED AS DIESEL AND CRUDE OIL ADSORBENT

摘要

The present work deals with the modification of lignocellulosic residues to obtain low cost adsorbents for diminishing an oil-products spill in seawater. The adsorbent (barley straw) was pretreated by acid hydrolysis, using sulfuric acid 0.045 N as a catalyst, in a PARR autoclave at 160-220 °C for 0-50 min. The water and oil adsorbency (defined as the ratio of water or oil adsorbed to dry adsorbent weight) test was performed, using diesel and crude oil of predetermined quality specifications. Water, diesel oil and crude oil adsorbency were found to increase by increasing the acid hydrolysis time for reaction-ending temperatures 160 and 200°C and to decrease at 220°C.