Aortoesophageal Fistula Due to Caustic Ingestion

PurposeCaustic agent ingestion may produce corrosive lesions that can extend beyond adjacent organs. We report three cases of aortoesophageal fistulas (AEF) after caustic ingestion that were diagnosed by autopsy.ResultsAEF is a fatal complication that should be suspected in any patient with caustic ingestion who presents with gastrointestinal bleeding. A high index of suspicion, early recognition by gastrointestinal endoscopy, computed tomography scan, and aortography are important to improve the outcome

In situ functionalization of a cellulosic-based activated carbon with magnetic iron oxides for the removal of carbamazepine from wastewater

The main goal of this work was to produce an easily recoverable waste-based magnetic activated carbon (MAC) for an efficient removal of the antiepileptic pharmaceutical carbamazepine (CBZ) from wastewater. For this purpose, the synthesis procedure was optimized and a material (MAC4) providing immediate recuperation from solution, remarkable adsorptive performance and relevant properties (specific surface area of 551 m2 g-1 and saturation magnetization of 39.84 emu g-1) was selected for further CBZ kinetic and equilibrium adsorption studies. MAC4 presented fast CBZ adsorption rates and short equilibrium times (< 30-45 min) in both ultrapure water and wastewater. Equilibrium studies showed that MAC4 attained maximum adsorption capacities (qm) of 68 ± 4 mg g-1 in ultrapure water and 60 ± 3 mg g-1 in wastewater, suggesting no significant interference of the aqueous matrix in the adsorption process. Overall, this work provides evidence of potential application of a waste-based MAC in the tertiary treatment of wastewaters.publishe