TITLE:
Fenton-Like Oxidation of Acid Yellow 23 in the Presence of Iron Rich Soil
AUTHORS:
Tagne Guy Merlain, Lawrence Tatanah Nanganoa, Belibi Belibi Placide Desire, Ndi Julius Nsami, Ketcha Joseph Mbadcam
KEYWORDS:
Acid Yellow 23, Discoloration, Heterogeneous Fenton, Iron Rich Soil
JOURNAL NAME:
Advances in Chemical Engineering and Science,
Vol.6 No.5,
November
30,
2016
ABSTRACT: Treatment
of yellow dye 23 by heterogeneous Fenton-like process was studied using
iron rich soil as an iron source. The iron rich soil sample was characterized
by XRD, SEM and BET analysis. XRD pattern indicates that the iron rich soil is
made of goethite and hematite. The reaction was
systematically investigated under various experimental conditions such as pH,
iron rich soil dosage, oxidant and dye concentrations. The result
revealed that using iron rich soil as catalyst led to high discoloration efficiency (97.71% for 140
min of treatment) at pH = 2.5, 2 g/L
iron rich soil and 16 m·mol/L H2O2. The degradation kinetics of acid yellow 23 can be
described by a pseudo-first-order reaction following the Langmuir-Hinshelwood mechanism. The main roles of hydroxyl
radicals in degradation process were investigated by adding of various radical
scavengers.