Gamtinių sorbentų panaudojimas žaliavinės naftos ir dyzelino surinkimui nuo vandens paviršiaus

• Main Author: Jucikė, Indrė
• Other Authors: Paulauskienė, Tatjana
• Format: Master Thesis
• Language: Lithuanian; English
• Published: Institutional Repository of Klaipeda University 2019
• Subjects: oil and its products spills; crude oil and diesel fuel cleanup; natural sorbents; Arctic
• Online Access: https://vb.ku.lt/KU:ELABAETD2142058&prefLang=en_US

One of the most popular transportation ways of oil and petroleum products is water transport. The Baltic Sea is one of the busiest shipping areas in the world. This is the reason why oil and its products spills are one of the major environmental problems in the Baltic Sea. These pollutants are known to be especially dangerous to the Baltic Sea, where the biological self-purification processes are slower than in warmer waters. Recently, great attention is given to researches of natural organic sorbents usage for oil and petroleum products spill response opportunities. This work was aimed to evaluate the sorption capacity of natural sorbents (wool, moss, straw, peat) and their composites during the sorption process of crude oil and diesel fuel spread on the Curonian Lagoon water surface. Experiments were carried out at Marine Engineering Faculty laboratories of Klaipeda University. The Curonian Lagoon water, crude oil from terminal of Būtingė and 2nd class arctic diesel fuel from AB „ORLEN Lietuva“ were used for the researches. The Curonian Lagoon and distilled water sorption capacity comparative analysis showed that sorbents and their composites has lower sorption capacity of Curonian Lagoon water due to its physical chemical properties. Sorption capacity of Curonian Lagoon water when using sorbents‘ composites was less than most of the singe sorbents‘ due to increased buoyancy when composing sorbents to composites. The evaluation of the maximum crude oil and diesel fuel sorption capacity studies showed that the strongest oleophilic properties has wool (the maximum sorption capacity equal to 99,411 g•g-1), while sorbing crude oil, and peat (maximum sorption capacity equal to 6,334 g•g -1), while sorbing diesel fuel. Meanwhile, the maximum sorption capacity of composites straw-peat (25-75 %) and straw-peat (50-50 %), while sorbing crude oil, were respectively 43 and 56 % lower compared to wool, and respectively 28 and 49 % less than using peat, during the sorption of diesel fuel. The investigation of absorbed amount of crude oil and diesel fuel spilled on the water surface, while using sorbents and their composites, determined that sorbents‘ composite straw-peat (25-75 %) absorbs the major amount of both – crude oil (60% of the spilled volume) and diesel fuel (69% of the spilled volume) comparing to single sorbents and sorbents‘ composite straw-peat (50-50 %). Evaporation of crude oil and diesel fuel during their sorption from the water surface ranged 2-5% and 2-6%. The evaluation of the results of all investigations showed that for spilled crude oil and diesel fuel cleanup from the lagoon water surface is recommended to use a composite straw-peat (25-75%).