Study on the Conversion of PCB-138 (2,2',3,4,4',5'-Hexachlorobiphenyl) via Hydrodechlorination Reaction Using Fe/Cu and Fe/Ni Bimetallic Nanocatalysts
Main Article Content
Abstract
Research on PCB-138 treatment is always urgent, along the development of nanotechnology has created general
conditions to apply them in this treatment process. With low cost and easy synthesis of Fe/Cu and Fe/Ni bimetallic
nanoparticles, the hydrodechlorination (HDC) reaction was conducted to convert PCB-138 in aqueous media into
non-toxic or less toxic products. The study results revealed that the optimal conditions for achieving high
PCB-138 conversion efficiency were: [Fe/Cu] = 2,0 g/L, pH = 3; [Fe/Ni] = 2,0 g/L, pH = 7, with a reaction time
of 120 to 180 min required to reach adsorption equilibrium. Experimental data indicated that the adsorption of
PCB-138 followed a pseudo-second-order kinetic model, confirming a chemisorption mechanism on the surface
of the catalytic nanoparticles. Furthermore, the conversion pathway of PCB-138 was proposed, involving the
formation of less toxic products such as biphenyl, thereby demonstrating the efficacy of the HDC reaction. This
study highlights the practical potential of bimetallic nanoparticles in treating water contaminated with chlorinated
organic compounds.
Keywords
Fe/Cu, Fe/Ni, hydrodechlorination, PCB-138.
Article Details
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