TY - JOUR
T1 - Magnetic detergent with potential application for diesel spills removal from seawater
AU - López, Yeisy C.
AU - Ortega, Greter A.
AU - Reguera, Edilso
N1 - Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2019/1/20
Y1 - 2019/1/20
N2 - One of the most concerning environmental and economic issue is oil spills due to their negative consequences. The present work deals on magnetic detergents for the removal of diesel spills from simulated seawater with different salinity levels. The syntheses of such detergents were carried out through the modification of magnetite nanoparticles (Fe3O4 NPs), during in situ- and/or post-synthesis coprecipitation reactions. Furthermore, oleic acid (OA), polyvinylpyrrolidone (PVP), sodium dodecyl sulfate (SDS), sodium dodecylbenzenesulfonate (SDBS), Tween 80 and Triton X-100 were evaluated as coating agents. The obtained detergents exhibited magnetic responses and were able to produce Pickering emulsions made of diesel and modified nanoparticles suspensions. Diesel removal percentages were in a 46–98% range, depending on the involved surfactant, used methodology, and water salinity level. A fraction from 20 to 80% of the removed diesel was spontaneously liberated out from the emulsions. Fe3O4NPs coated with non-ionic surfactants showed the highest efficiency for diesel removal without considerable precipitation of nanoparticles in the simulated seawater.
AB - One of the most concerning environmental and economic issue is oil spills due to their negative consequences. The present work deals on magnetic detergents for the removal of diesel spills from simulated seawater with different salinity levels. The syntheses of such detergents were carried out through the modification of magnetite nanoparticles (Fe3O4 NPs), during in situ- and/or post-synthesis coprecipitation reactions. Furthermore, oleic acid (OA), polyvinylpyrrolidone (PVP), sodium dodecyl sulfate (SDS), sodium dodecylbenzenesulfonate (SDBS), Tween 80 and Triton X-100 were evaluated as coating agents. The obtained detergents exhibited magnetic responses and were able to produce Pickering emulsions made of diesel and modified nanoparticles suspensions. Diesel removal percentages were in a 46–98% range, depending on the involved surfactant, used methodology, and water salinity level. A fraction from 20 to 80% of the removed diesel was spontaneously liberated out from the emulsions. Fe3O4NPs coated with non-ionic surfactants showed the highest efficiency for diesel removal without considerable precipitation of nanoparticles in the simulated seawater.
KW - Diesel
KW - Emulsions
KW - Magnetic separation
KW - Magnetite nanoparticles
KW - Seawater
KW - Surfactants
UR - http://www.scopus.com/inward/record.url?scp=85055900646&partnerID=8YFLogxK
U2 - 10.1016/j.colsurfa.2018.10.061
DO - 10.1016/j.colsurfa.2018.10.061
M3 - Artículo
SN - 0927-7757
VL - 561
SP - 120
EP - 127
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
ER -