October 2012

Adsorption of o-nitrophenol onto nano iron oxide and alginate microspheres: Batch and column studies

In the present study, the adsorption behavior of o-nitrophenol from aqueous medium, using nano iron oxide loaded calcium alginate beads were studied using equilibrium batch and column flow techniques. The effect of pH, adsorbent dose, contact time and temperature on adsorption capacity of the magnetic beads was investigated. The optimum pH value was defined to be 2 at temperature 30°C. The equilibrium data were...

Author(s): Anjali Soni, Alka Tiwari and A. K. Bajpai

October 2012

Structural study of pyridine-2,6-dicarbohydrazide nitrate salt

Reaction between dimethyl-2,6-pyridinedicarboxylate and anhydrous hydrazine by microwave synthesis under solvent free conditions gave pyridine-2,6-dicarbohydrazide (pdch). This compound was recrystallized in methanol at low pH condition and gave the nitrate salt of pdch. In the crystal structure of this compound, protonated pdch cations and nitrate anions are linked via...

Author(s): Mohammad Hakimi, Keyvan Moeini, Zahra Mardani and Sanaz Khorasani