Enhanced Sorption for the Oil Spills by SDS-Modified Rice Straw

Abstract

Frequent oil spills have caused serious consequences to the ecosystem and environment. Therefore, in order to reduce and eliminate the impact of oil spills on biology and the environment, oil spill remediation materials must be considered. As a kind of cheap and biodegradable natural organic cellulose oil-absorbing material, straw has an important practical significance in the treatment of oil spills. In order to improve the ability of rice straw to absorb crude oil, rice straw was first treated with acid and was then modified with sodium dodecyl sulfate (SDS) through a simple charge effect. Finally, the performance of oil absorption was tested and evaluated. The results illustrate that the oil absorption performance was greatly improved under the conditions of 10% H2SO4, for a 90 min reaction at 90 °C, under 2% SDS, and reacted for 120 min at 20 °C, and the rate of adsorption for rice straw to crude oil was raised by 3.33 g/g (0.83 to 4.16). Then, the rice stalks before and after the modification were characterized. Contact angle analysis shows that the modified rice stalks display better hydrophobic–lipophilic properties than unmodified rice stalks. The rice straw was characterized by XRD and TGA, and the surface structure of the rice straw was characterized by FTIR and SEM, which explain the mechanism of surface-modified rice straws with SDS to improve their oil absorption capacity.

Enhanced Aquathermolysis of Water–Heavy Oil–Ethanol Catalyzed by B@Zn(II)L at Low Temperature

“…The complexation of the metal atoms with organic sulfur can be better influenced by the ligands, which can result in the breaking of the C-S bond and the beginning of the acid polymerization and water-gas shift processes. In this approach, the heavy oil's viscosity is decreased, enhancing its quality [11][12][13]. Steam's energy causes certain large molecules to be pyrolyzed into smaller molecules throughout the reaction process, and catalysis may remove some heteroatoms [14,15].…”

Oil-Soluble Exogenous Catalysts and Reservoir Minerals Synergistically Catalyze the Aquathermolysis of Heavy Oil

“…With economic and social development, global oil demand is expected to increase by more than 40% by 2025, according to the results of the US Geological Survey. Heavy oil resources are very rich, geological reserves of about 815 billion tons, accounting for about 70% of the world's total oil reserves, much larger than traditional crude oil [1,2], mainly distributed in Canada, Venezuela, Russia, the United States, and China. Therefore, the extraction of heavy oil is particularly important [3].…”

Study on the Properties Changes of Reversible Invert Emulsion during the Process from O/W to W/O with Alkali

“…However, they also have some drawbacks. During the completion phase, they can cause difficulties in filter cake removal ( Figure 1 ) [ 19 ], weak bonding strength between cement and formation, and challenges in handling oil-laden cuttings [ 20 , 21 , 22 ]. Water-alkaline drilling fluids are evidently superior to oil-alkaline during the completion phase [ 23 , 24 , 25 ].…”