Acid/Alkali-Resistant Modified MOF-74 Grafted with Polyether Demulsifier for Oil-in-Water Emulsions Under Ambient Conditions.

ABSTRACT: The effective and rapid separation of oil-water emulsions at room temperature, particularly under harsh environmental conditions like acid-base fluctuations, high salinity, and the coexistence of surfactants, remains a significant challenge in oily wastewater treatment. To address this, a novel amphiphilic demulsifier, MOF-74@SiO₂-GPTMS grafted ANP (MSG-ANP), was synthesized by first modifying MOF-74@SiO₂ (MS) with γ-glycidoxypropyltrimethoxysilane (GPTMS) to create epoxy-functionalized MSG particles, followed by grafting the non-ionic polyether C₁₂-C₁₄ aliphatic polyethylene oxide polyoxypropylene (ANP) onto MSG. Bottle tests demonstrated that MSG-ANP achieved a high demulsification efficiency of 93% within 15 min for oil-in-water emulsions at r

SUBMITTER: Wang B 

PROVIDER: S-EPMC12431512 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature