Adsorption of p-nitrophenol from water on polymeric adsorbents [articol]

Abstract

Water pollution, especially the industrial wastewater containing aromatic compounds, is one of the most urgent environmental problems. Phenolic compounds are pollutants of great concern because of the high toxicity and possible accumulation in the environment. Most of these compounds are recognized as organic contaminants in environmental systems. For p-nitrophenol adsorption on a specific polymeric adsorbent, the solute–adsorbent interaction will play an important role in the adsorption capacity from aqueous solution. In this preliminary study, a polymeric adsorbent P1n was prepared from benzaldehyde poly(styrene-co-divinylbenzene), and it together with amberlite, XAD-4 were thereafter tested in batch experiments for adsorbtion of p-nitrophenol from aqueous solutions. Amberlite XAD-4 with single π-π stacking or hydrogen bonding interaction, respectively, was selected as comparative resin.