00000ctm a22000003a 4500 UP-8027390931314003068 Buklod 20180305114834.0 m |o d | ta 180305s xx d r |||| u| (iLib)UPVIS-00053129681 Gift VML/ess 03.05.18 eng LG 993.5 2011 C4 N47 Neri, Therese Ariane N. Evaluation of the sorbent efficiency of oyster shell and charcoal in the remediation of oil-contaminated sediments. Therese Ariane N. Neri. 2011. ix, 43 leaves graphs, tables, and computer print-out. Thesis (Undergraduate, Bachelor of Science in Chemistry) College of Arts and Sciences, University of the Philippines Visayas, Miagao, Iloilo. Oil has been one of the most vital energies and raw material sources for synthetic polymers and chemicals worldwide. Its continued exploration, transportation and storage may pose risk of accidental spillage with the potential to cause significant environment impact. In dealing with oil spills, one of the problems that need to be addressed is the development of low-cost and efficient oil remediation techniques and materials. To provide solution to this problem, the sorbent efficiency of oyster shell and charcoal in the remediation of oil-contaminated sediments were evaluated. Two types of oil-contaminated sediments were used, coarse (with low organic matter content) and fine (with high organic matter content) which were amended with sorbent materials at three different ratios and equilibrated for 1 hour using a vortex mixer. Total Solvent Extractable Material (TSEM) was used to quantify the oil present in the sediment samples after treatment . TSEM level of the treated samples were determined using ultrasonic extraction with hexane/mythylene chloride (1:1 v/v) as solvents. The efficiency of the sorbent materials to remove or stabilize oil in sediments was evaluated using percent TSEM removal as the criteria. Charcoal was found to have higher TSEM removal (45 percent - 75 percent) than oyster shell (20 percent - 53 percent) in the coarse sediment. The same trend was found in the fine sediment with 15 percent-57 percent TSEM removal for charcoal and 1.75 percent-39 percent for oyster shell. The marked decrease in the TSEM removal of both oyster shell and charcoal in the fine sediment could be attributed to its high OM content (8.64 percent) which interferes with oil uptake by masking sorption sites and/or by binding small particles together, reducing the effective surface area. Oil-contaminated Sediments. Shell Oyters. Thesis (Undergraduate, Bachelor of Science in Chemistry) College of Arts and Sciences, University of the Philippines Visayas, Miagao, Iloilo. UPVIS UPV-ML LG 993.5 2011 C4 N47 Thesis