Primena recikliranog vunenog materijala kao sorbenta za uklanjanje nafte, naftnih derivata i ulja iz vode

Abstract

U ovom radu korišćen je sorbent na bazi vune sekundarnog porekla u cilju uklanjanja sirove nafte, dizel goriva, motornog, baznog i biljnog ulja (adsorbata) iz vode. Ispitivan je uticaj različitih obrada sorbenta (niskotemperaturnom plazmom, biopolimerom hitozanom i vodonikperoksidom) i vremena ceđenja na sorpcioni kapacitet, kao i sposobnost plutanja sorbenta i mogućnost njegove višekratne upotrebe. Sorbent na bazi vune sekundarnog porekla pokazuje visok sorpcioni kapacitet kod svih ispitivanih adsorbata. Sposobnost zadržavanja adsorbata na neobrađenom sorbentu je dobra i već posle 5 minuta se uspostavlja ravnotežno stanje. Neobrađeni sorbent i uzorak obrađen hitozanom pokazuju dobru sposobnost plutanja, za razliku od uzoraka obrađenih niskotemperaturnom plazmom i vodonikperoksidom. Sorbent se može višekratno upotrebiti jer i posle 5 ciklusa sorpcije zadržava sorpcioni kapacitet veći od 50% vrednosti sorpcionog kapaciteta posle prvog ciklusa sorpcije.

The aim of this study was to highlight the potential of recycled wool-based nonwoven material for removal of crude, motor, diesel, base and vegetable oil from water. Sorption capacities of the sorbent differently treated (low-temperature plasma, biopolymer chitosan and hydrogen peroxide), oil retention, buoyancy in static and dynamic conditions as well as sorbent reusability determined. The results indicated that wool even as a recycled material showed high sorption capacity for different oils. Oil retention for untreated sorbent is excellent even after 5 minutes when the equlibrium is achieved. Untreated and CHT treated sorbent showed good buoyancy unlike LTP and H2O2 treated sorbents. Sorbent exhibited good reusability since even after five sorption cycles in oil medium without water, the decrease in sorption capacity did not exceed the 50% of initial value.