Removal of Antibiotics from Wastewater by Comparison of Coagulation, Membrane and Adsorption Methods

IF 1 Q4 ENGINEERING, CIVIL

Jordan Journal of Civil Engineering Pub Date : 2023-07-10 DOI:10.14525/jjce.v17i3.10

Saeed Safaei, Seyed Ahmad Mirbagheri, M. Ehteshami, E. Teymouri, M. Salari

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引用次数: 0

Abstract

In the present study, oxytetracycline (OTC) was selected as a medical contaminant with an organic structure to increase the efficiency and feasibility of comparison with other research studies. Therefore, the removal of OTC from medicinal effluents using different methods; namely, activated carbon, bentonite adsorption, iron(III) chloride coagulation, membrane filtration and reverse osmosis (RO), was investigated. Results indicated that the removal of soluble antibiotics in the factory wastewater by adsorption method was between 35% and 77%, at a pH of 6.5 and the total dissolved solids (TDS) and OTC concentration were reduced by 55% and 77%, respectively. In the coagulation method, where the suitable pH ranges from 5.5 to and 7.5, the optimal dosage of iron (III) chloride coagulation was between 40 and 100 mg/l, which resulted in 98.7% of OTC removal. It was concluded that the highest OTC adsorption of 98.7% in the RO membrane and TDS removal were obtained at a pressure of 9 bars. All the experiments on these membranes were performed within 4 months and the membranes still performed well. Therefore, it is concluded that long-term operation has little effect on the performance of the membrane and this membrane is a suitable membrane for the concentration of OTC. Finally, the RO is defined as the suitable method for OTC removal, after passing once through the membrane, while the other methods are proper to be used in the pre-treatment of medicinal wastewater. KEYWORDS: Antibiotics, Absorption, Coagulation, Membrane filtration, Reverse osmosis.

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混凝法、膜法和吸附法去除废水中抗生素的比较

本研究选择土霉素(OTC)作为具有有机结构的医用污染物，以提高与其他研究比较的效率和可行性。因此，从医药废水中去除OTC采用不同的方法;对活性炭、膨润土吸附、氯化铁(III)混凝、膜过滤和反渗透(RO)进行了研究。结果表明，在pH为6.5的条件下，吸附法对工厂废水中可溶性抗生素的去除率为35% ~ 77%，总溶解固形物(TDS)和OTC浓度分别降低55%和77%。在适宜pH为5.5 ~ 7.5的混凝法中，氯化铁的最佳投加量为40 ~ 100 mg/l, OTC去除率为98.7%。结果表明，在9 bar压力下，反渗透膜的OTC吸附性最高，达到98.7%，TDS去除率最高。在4个月内对这些膜进行了所有实验，膜仍然具有良好的性能。因此，长期操作对膜的性能影响不大，该膜是一种适合于OTC浓度的膜。最后，将反渗透法定义为通过一次膜即可去除OTC的合适方法，而其他方法均适合用于医药废水的预处理。关键词:抗生素，吸收，凝血，膜过滤，反渗透

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来源期刊

Jordan Journal of Civil Engineering ENGINEERING, CIVIL-

CiteScore

2.10

自引率

27.30%

发文量

期刊介绍： I am very pleased and honored to be appointed as an Editor-in-Chief of the Jordan Journal of Civil Engineering which enjoys an excellent reputation, both locally and internationally. Since development is the essence of life, I hope to continue developing this distinguished Journal, building on the effort of all the Editors-in-Chief and Editorial Board Members as well as Advisory Boards of the Journal since its establishment about a decade ago. I will do my best to focus on publishing high quality diverse articles and move forward in the indexing issue of the Journal.