Synthesis and application of hydrophilically-modified Fe₃O₄ nanoparticles in oil sands separation.

ABSTRACT: Nanoparticles have been reported to be a promising candidate for the separation of heavy oil from its host rock's surface. These nanoparticles (NPs) are often dispersed and stabilized in the solution by some surfactants during the unconventional oil ores processing. Herein, the PEG600-KH560 (PK) has been grafted onto Fe₃O₄ NP surfaces, obtaining a kind of hydrophilically-modified recyclable nanoparticle. Results show that these NPs (averaged at around 16 nm for single sphere) could be well dispersed in water (no settling in 72 h), forming PK-Fe₃O₄ nanofluids (NFs) at 0.2 wt%. These PK-Fe₃O₄ NFs are found to be able to be quickly separated from the dispersions by an external magnetic field, and returning back to stable NFs wh

SUBMITTER: Zhang Z 

PROVIDER: S-EPMC9080067 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature