2026-10-12T15:25:53Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34030506 2026-09-30T07:17:07Z category_1 category_4 category_7 category_873 category_39 category_734 category_931 category_69 category_132 category_135 portal_63 item_type_6 month_year_09_2026

Kinetic Modeling of Iron Electrocoagulation in Moderate to Slightly Acidic Media Edwin I. Ochedikwu (25142352) Akshat Verma (21445443) Shankararaman Chellam (1704610) Benjamin A. Wilhite (7345796) Jodie Lutkenhaus (1926565) Biophysics Biochemistry Medicine Chemical Sciences not elsewhere classified Ecology Biological Sciences not elsewhere classified Information Systems not elsewhere classified Inorganic Chemistry Infectious Diseases Computational Biology slightly acidic media single model validated reactive species involved reactive intermediate species full transient profile bulk fenton chemistry ), hydrogen peroxide kinetic model predicts e ., ph designing electrocoagulation processes 2 </ sub ph values kinetic modeling wastewater treatment synthetic wastewater results provide rapid turnover iron electrocoagulation guiding framework findings predict ferryl ion faster consumption experimental data emerging process electrode configuration electrocoagulation step electrocoagulation process electrocoagulation operation concentration dependencies applied current 80 μg Electrocoagulation is an emerging process for water and wastewater treatment. However, there is a gap in understanding the effects of electrocoagulation operation (i.e., pH, applied current, electrode configuration) and the concentration dependencies of reactive species involved in the degradation of contaminants. Here, we show the development and validation of a batch reactor kinetic model for an electrocoagulation process in moderate to slightly acidic media for water treatment, guided by experimental data of electrocoagulation in synthetic wastewater at pH values of 5.0, 5.5, 6.0, and 6.5. The kinetic model uniquely predicts the full transient profile of the ferryl ion, a short-lived reactive oxygen species (ROS), coupling anode, cathode, and bulk Fenton chemistry in a single model validated against measured Fe(II), dissolved oxygen (DO), hydrogen peroxide (H₂O₂), and the sum of Fe(II) and Fe(III) concentrations. Our findings predict the rapid turnover and low concentration (<1.80 μg/L) of the ferryl ion as a reactive intermediate species. Interestingly, the kinetic model predicts that lower electrocoagulation currents yield higher ferryl ion concentrations. Further, increased electrocoagulation time results in faster consumption of the ferryl ion after the electrocoagulation step. The implication is that these results provide a guiding framework for designing electrocoagulation processes. 2026-09-30T00:00:00Z Text Journal contribution 10.1021/acsestwater.6c01166.s001 https://figshare.com/articles/journal_contribution/Kinetic_Modeling_of_Iron_Electrocoagulation_in_Moderate_to_Slightly_Acidic_Media/34030506 CC BY-NC 4.0