Phenol Removal From Wastewater By Nanofiltration

Nanofiltration would be considered as an alternative method to the processes (e.g. adsorption on activated carbon, chemical or enzymatic oxidation, and microbial degradation) to remove phenolic compounds from wastewaters. Phenolic compounds are important pollutants in industrial wastewaters even at low concentration. The main objective of this work is to review the behavior of nano-filter membranes, for reducing of phenol concentration in the liquid effluents. In this regard, main physicochemical properties of three membranes (NF 90, NF 270 and HR98PP) were examined. Molecular weight cut-off (MWCO) was determined by means of consecutive crossflow filtration essays with 100mg/L solutions of Polyethylene glycols (PEGs). The influence of the solution pH on the NF 90 and NF 270 was investigated. The paper, presents the effect of structural characteristics of the membrane on the filtration performance, considering different operating conditions (feed concentration, pressure and pH). However, the rejection percentage was decreased with increasing of pressure.

Keywords:

Phenol , Wastewater , Nanofiltration , Membrane