Rodríguez Francisco, Montoya-Ruiz Carolina, Estiati Idoia, Saldarriaga Juan F
Department of Civil and Environmental Engineering, Universidad de los Andes, Carrera 1Este #19A-40, Bogotá 111711, Colombia.
Facultad de Ciencias, Universidad Nacional de Colombia, Sede Medellín Calle 59A #63-20, Medellín 050034, Colombia.
ACS Omega. 2020 Sep 17;5(38):24389-24402. doi: 10.1021/acsomega.0c02768. eCollection 2020 Sep 29.
The presence and final destination of pharmaceutical compounds in waters constitute one of the emerging events in current environmental chemistry. Two widely consumed compounds have been evaluated in this study, amoxicillin (AMOX) and diclofenac (DFC), at a concentration of 200 mg L. The presence of both in wastewater has been verified, generating problems in ecosystems and human health. Pyrolysis of hair waste from a tannery process was performed in a fixed-bed reactor. Char was obtained at different operating temperatures (300, 350, 400, and 450 °C), which underwent a characterization of heavy metals and elemental composition. An activation process was applied to the char obtained at 450 °C by means of physicochemical processes and with two chemical agents (KOH and KCO). For the removal of drugs, two separate tests were performed, one for 28 days and the other one for 4 h, to assess the efficiency and the percentage of removal. It was found that the char obtained at 450 °C is the one that removes most of both compounds: more than 90% of AMOX and more than 80% of DFC.
药物化合物在水体中的存在及其最终归宿是当前环境化学领域新出现的问题之一。本研究评估了两种广泛消费的化合物，阿莫西林（AMOX）和双氯芬酸（DFC），浓度为200 mg/L。已证实二者均存在于废水中，给生态系统和人类健康带来问题。在固定床反应器中对制革过程产生的毛发废料进行热解。在不同操作温度（300、350、400和450℃）下获得了炭，对其进行了重金属和元素组成表征。通过物理化学方法并使用两种化学试剂（KOH和KCO）对在450℃下获得的炭进行活化处理。为了去除药物，进行了两项单独的测试，一项为期28天，另一项为期4小时，以评估去除效率和去除百分比。结果发现，在450℃下获得的炭对两种化合物的去除效果最佳：对AMOX的去除率超过90%，对DFC的去除率超过80%。
