Simultaneous Removal of Estrogens and Antibiotics from Livestock Manure Using Fenton Oxidation Technique

Abstract

The presence of estrogens and antibiotics in animal manure has raised considerable attention regarding their potential risks in both the soil system and human health. This study investigated the removal of estrogens (estriol (E3), bisphenol A (BPA), estradiol (17β-E2), ethinyl estradiol (EE2)), and antibiotic (sulfadimethoxine (SDM)) in livestock manure using the Fenton oxidation process. Based on the removal efficiency of estrogens and antibiotics, the optimal conditions of the Fenton oxidation process were as follows: an H 2 O 2 dosage of 10.5 mmol/g slurry, an Fe 2+ /H 2 O 2 molar ratio of 0.067 mol/mol, a stirring rate of 100 rpm, the feeding of an identical amount of H 2 O 2 in two steps (at 0 and 15 min), a manure/reactor ratio of 1:25, and a reaction time of 100 min. Under these conditions, the removal efficiencies of E3, BPA, 17β-E2, EE2, and SDM in cow manure were 72.1%, 88.2%, 89.4%, 73.3%, and 99.7%, respectively. In the above-mentioned optimal conditions, the simultaneous removal of estrogens and antibiotic in different manure conditions led to the removal of above 70% of targeted contaminants, except for E3 in swine and chicken manure in all the manure. The findings demonstrate the useful application of the Fenton oxidation process in the concomitant removal of antibiotics and estrogens from animal manure, which reduces the associated risks to human health and environmental safety.

Activated Carbon Assisted Fenton-like Treatment of Wastewater Containing Acid Red G

“…For instance, the Fenton process can dispose of wastewater with a large chemical oxygen demand (COD) ranging from 100,000 to 150,000 mg/L [4,5]. Meanwhile, the Fenton reaction can degrade not only conventional organic pollutants but also bioaccumulated and refractory pollutants, such as high-concentration nitrogenous dye [6][7][8][9][10], estrogens, and antibiotics. Fenton process can also be applied to soil remediation [11][12][13], biomedicine [14], treating deep bacteria-infected diseases [15], and water treatment due to its lower side effects and lack of equipment restrictions.…”