Complex treatment of oily polluted waters by modified melamine foams: from colloidal emulsions to a free oil removal.

ABSTRACT: This study deals with the efficient, low-cost, and scalable treatment of oily polluted waters including colloidal emulsions, oil-in-water mixtures, and free oil removal using melamine foams (MFs) modified by ferric chloride (FeCl₃). Modified foams have superhydrophobic character due to the coordination of Fe³⁺ with free electron pairs on nitrogen and oxygen atoms within the melamine structure. The water contact angles (WCA) were 146° ± 2°, 148° ± 4°, 153° ± 2°, and 150° ± 4° for foams modified by the solutions with concentrations of 0.001 M, 0.005 M, 0.01 M, and 0.02 M, respectively. This modification enables the efficient treatment of various oil/water systems, including oil/water colloidal emulsions (99 vol% of the droplets have dimensions below 500 nm), oil-in-wate

SUBMITTER: Hailan S 

PROVIDER: S-EPMC10495526 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature