Maicaneanu Discusses “Iron Catalysts for Dye Containing Wastewater Treatment”

Posted on 8/27/2019 1:56:29 PM

Professor Sanda Andrada Maicaneanu attended the American Chemical Society National Meeting in San Diego on August 25, 2019.

She presented her research talk “Iron catalysts for dye containing wastewater treatment.”  This work was largely completed here at IUP by undergraduate chemistry majors Breanna McGhee and David Henninger. 

Abstract: “Iron catalysts for dye containing wastewater treatment”

Breanna McGhee1, David Henninger1, Razvan Stefan2, and S. Andrada Maicaneanu1*

1Department of Chemistry, Indiana University of Pennsylvania, Indiana, PA 15705, USA

2Preclinic Department, University of Agricultural Science and Veterinary Medicine, 3-5 Calea Manastur, 400372, Cluj-Napoca, Romania

*corresponding author sanda.maicaneanu@iup.edu

Two types of iron-bearing catalysts were considered for this study.

The first type was iron-doped carbon xerogel, synthesized using sol-gel method as follows: (1) potassium-2,4-dihydroxybenzoate was obtained from 2,4-dihydroxibenzoic acid and K2CO3, (2) polycondensation reaction with formaldehyde was conducted using K2CO3 as a catalyst, (3) organic gel obtained was washed with ethanol, (4) K+ ions from the organic gel were replaced with Fe3+ ions, (5) metal-doped gel was dried in air, and finally (6) metal-doped gel was pyrolyzed in inert atmosphere. A blank carbon xerogel (CX) sample and five iron-doped carbon xerogel (Fe-CX) samples were prepared as described in Table 1.

The second type was iron enriched montmorillonitic clay mineral, prepared using two techniques: pillaring (powder method) and impregnation. Three mains steps were followed for Fe-PILC catalysts synthesis: (1) micro clay fraction separation, (2) iron pillaring solution synthesis, and (3) pillaring. Four clay samples were tested: separated clay (SC-0), 500°C calcined separated clay (SC), iron modified clay (Fe-SC), and iron pillared clay (Fe-PILC), Figure 1.

All catalysts were investigated in heterogeneous Fenton and catalytic wet air oxidation processes for dye containing wastewater treatment. A series of three cationic dyes were considered to test the prepared catalysts: brilliant green, crystal violet, and methyl green.

Department of Chemistry