Ion Exchange (India) Ltd.

PolyHIPEs are highly porous, cross-linked polymers typically synthesized within high internal phase emulsions (HIPEs).This work describes the synthesis of novel acrylamide (AAm) based polyHIPEs cross-linked with ethyleneglycol dimethacrylate (EGDMA).In this methodol., the AAm and EGDMA monomers were taken in HIPE external and internal phases, resp.The subsequent polymerization led to the formation of bicontinuous polyHIPEs.The immiscibility of AAm in the aqueous phase with EGDMA monomer was overcome by this methodol.The EGDMA concentration in the polyHIPEs was varied between 30 and 70% by weight to get polymers with various degrees of crosslinking.Dimensionally stable polyHIPEs with a high degree of crosslinking were obtained.Porous polymers with open-cellular architecture resulted with interconnecting pores in polyHIPEs.Water absorption of polyHIPEs was found to be inversely proportional to the EGDMA concentrationThe hydrophilicity and porous structure of the resultant polyHIPEs were found to depend on the EGDMA concentration

This article discusses the problem of iron and manganese contamination, the adverse effects and available control methods. The presence of iron and manganese in water causes serious commercial and health problems. Various treatment methods are available to treat water contaminated with these elements. However, catalytic media is an excellent choice particularly increasing given the preference for non-chemical water treatment. INDION ISR and BIRM are the most popularly used synthetically manufactured catalytic media.