Equation Chapter 1 Section 1Use of cork granules as an effective sustainable material to clean-up spills of crude oil and derivatives

authors	Todescato, D; Hackbarth, FV; Carvalho, PJ; de Souza, AAU; de Souza, SMAGU; Boaventura, RAR; Granato, MA; Vilar, VJP
nationality	International
journal	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
author keywords	Cork; Oil spill; Crude oil and oil derivatives; Oil sorption; Oil recovery
keywords	SORBENTS; SORPTION; ADSORPTION; RECOVERY; REMOVAL; TEMPERATURE; COMBUSTION; BLENDS; POWDER; RUBBER
abstract	The use of cork granules for cleaning up crude oil or oil derivative spills and further oil recovery appears as a promising option due to their unique properties, which allow a high oil sorption capacity, low water pickup and excellent reuse. The present work reports the effect of oil viscosity on cork sorption capacity by using five types of oils (lubricating oil, 5.7 g(oil) g(cork)(-1); heavy oil, 4.2 g(oil) g(cork)(-1); light oil, 3.0 g(oil) g(cork)(-1); biodiesel, 2.6 g(oil) g(cork)(-1); and diesel, 2.0 g(oil) g(cork)(-1)). The cork sorption capacity for light petroleum was also evaluated as a function of temperature and sorbent particle size. Additionally, improvements on oil recovery from cork sorbents by a mechanical compression process have been achieved as a result of a design of experiments (DOE) using the response surface methodology. Such statistical technique provided remarkable results in terms of cork sorbent reusability, as the oil sorption capacity was preserved after 30 cycles of sorption-squeezing steps. The sorbed oils could be removed from the sorbent surface, collected simply by squeezing the cork granules and further reused. The best operational region yielded near 80% oil recovery, using a cork mass of 8.85 g (particle size of 2.0-4.0 mm) loaded with 43.5 mL of lubricating oil, at 5.4 bar, utilising two compressions with a duration of 2 min each.
publisher	SPRINGER HEIDELBERG
issn	0944-1344
isbn	1614-7499
year published	2020
volume	27
issue	1
beginning page	366
ending page	378
digital object identifier (doi)	10.1007/s11356-019-06743-1
web of science category	Environmental Sciences
subject category	Environmental Sciences & Ecology
unique article identifier	WOS:000499670600001