Removal of Phthalate Esters by Combination of Activated Carbon with Nanofiltration
Nanofiltration (NF), combined with activated carbon (AC) for phthalate esters (PAEs) treatment, were studied. Three kinds of typical PAEs dimethyl phthalate (DMP), di-(2-ethylhexyl) phthalate (DEHP) and dioctyl phthalate (DOP) were selected as target contaminant. Fifty µg/L of each PAEs liquid match was prepared with natural river water and treated by NF combined with 10 mg/L or 50 mg/L powdered AC. The test was processed at normal temperature, 0.4 MPa pressure, and pH value as 7. The results indicated that AC can be used as the pretreatment of NF to remove the majority of dissolved organic matter and inorganic particles and can be a safeguard for NF membrane. The removal rates of three PAEs by AC-NF were all above 99%, which suggests that the AC-NF process is feasible for PAEs treatment.
KeywordsRemoval Phthalate esters Activated carbon Nanofiltration
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