Acid mine drainage treatment with novel high-capacity bio-based anion exchanger

Aminated peat (termed PG-Peat) produced using polyethylenimine and glycidyltrimethylammonium chloride was used for the removal of sulphate from real acid mine drainage (AMD) in batch column mode sorption studies. In tests, highest capacity achieved 125.7 mg/g. PG-Peat efficient rapid AMD even at low temperatures (2–5 °C), achieving equilibrium within a contact time 30 min. The treating showed higher uptake (154.2 mg SO42?/g) than regenerative practical applicability also tested set-ups synthetic solutions (at pH 5.8 2.0). obtained when were treated acidic (2.0) compared to 5.8. This could be attributed presence cationized amine groups on under conditions. Almost complete desorption with NaCl that solution 5.8, while lowest rates observed (pH 2).