Synthesis and application of porous oil-sorbent microspheres: Characterization, retention capacity and sorption kinetics

A Role for Newly Developed Sorbents in Remediating Large‐Scale Oil Spills: Reviewing Recent Advances and Beyond

“…Porous sorbent exhibits an adsorption mechanism with sorption mostly occurring on substrate surfaces with limited sorption capacity (Figure 4A). [118][119][120][121][122][123] In the past decade, many research efforts has been devoted to developing new sorbent materials with some success. Specifically, the hierarchically porous structure of sorbent can hold some these viscous oils which results in a high oil sorption capacity.…”

Recyclable polyether–polyquaternium grafted SiO2 microsphere for efficient treatment of ASP flooding-produced water: oil adsorption characteristics and mechanism

“…The adsorption equilibrium was reached within 80 min and it was also found that the PPA@SiO 2 (390.0 mg g À1 ) microsphere exhibited higher adsorption capacity than MPS-SiO 2 (270.1 mg g À1 ) and other reported adsorbents. 21,34 Moreover, there kinetic models: the pseudo-rst order and pseudo-second order models were used to further analyze the adsorption kinetic process, which can be described as: 35 ln(q e À q t ) ¼ ln q e À k 1 t…”

“…This indicates the validity of the pseudo-second order kinetic model for emulsied oil adsorption systems which is not wondering as this model was frequently used to describe oil or other organics adsorption kinetics onto other adsorbents. 35,36 Furthermore, the fast adsorption equilibrium manifested that the emulsied oil adsorption rate onto the microspheres was primarily determined by the surface or external diffusion rather than pore diffusion process. However, the pristine SiO 2 achieved an oil adsorption capacity of 195.8 mg g À1 within 480 min, this relatively longer equilibrium time emphasizes the pore diffusion behaviors of oil adsorption onto SiO 2 .…”

The structure and property of polyacrylonitrile-based microfiltration membranes for oil-water emulsion separation

“…By comparison, the oily wastewater composition is more complicated, the wastewater may contain phenols, nitriles, amine, chloride, phosphide, aldehyde, ketone and other organic compounds. 1 According to statistics, at least 5 million to 10 million tons of oil substances enter water bodies in the world every year. If they are allowed to develop without effective treatment, they will cause serious harm to human beings, animals, plants and even the ecosystem.…”