Simultaneous removal of methylene blue dye and waterborne pathogens from wastewater using extract of Embelia schimperi fruits

IF 1.3 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Bulletin of the Chemical Society of Ethiopia Pub Date : 2024-01-23 DOI:10.4314/bcse.v38i2.1

Belete Tewabe Gebeyehu, Minbale Gashu Tadesse, Abebe Tedla

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Abstract

In this study, we report the use of Embelia schimperi fruits’extract to simultaneously remove methylene blue dye and pathogens from wastewater. The extract of Embelia schimperi fruits was characterized by Atomic force Microscopy and Fourier Transform Infra-Red spectroscopy. The adsorption properties of the crude extracts of the fruits were explored as a function of dosage, contact time, pH, initial methylene blue concentrations, and temperature. As a result, the highest removal efficiency of methylene blue was found to be 99.2% at optimum conditions. The adsorption data demonstrated that the adsorption of Embelia schimperi followed the Langmuir isotherm model (R2 = 0.94899) and the pseudo-second-order kinetic model (R2 = 0.99326). Besides, crude extracts of the fruits showed significant antibacterial properties against gram-positive and gram-negative bacteria. Agar diffusion tests confirmed that Listeria monocytogenes and Staphylococcus aureus were highly sensitive to the crude extracts of Embelia schimperi fruits, followed by Escherichia coli and Salmonella typhi. Thus, the findings of this study confirm the promising potential of Embelia schimperi fruits as a natural adsorbent used to remove methylene blue dye and pathogenic bacteria at the same time from wastewater. KEY WORDS: Embelia schimperi, Adsorption, Isotherm, Kinetic, Methylene blue, Waterborne pathogens Bull. Chem. Soc. Ethiop. 2024, 38(2), 281-296. DOI: https://dx.doi.org/10.4314/bcse.v38i2.1

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利用五味子果实提取物同时去除废水中的亚甲基蓝染料和水传播病原体

在本研究中，我们报告了利用五味子果实提取物同时去除废水中亚甲蓝染料和病原体的方法。我们采用原子力显微镜和傅立叶变换红外光谱对五味子提取物进行了表征。研究了果实粗提取物的吸附特性与用量、接触时间、pH 值、初始亚甲基蓝浓度和温度的函数关系。结果发现，在最佳条件下，亚甲基蓝的最高去除率为 99.2%。吸附数据表明，Embelia schimperi 的吸附遵循 Langmuir 等温线模型（R2 = 0.94899）和假二阶动力学模型（R2 = 0.99326）。此外，果实的粗提取物对革兰氏阳性菌和革兰氏阴性菌具有显著的抗菌特性。琼脂扩散试验证实，李斯特菌和金黄色葡萄球菌对五味子果实粗萃取物高度敏感，其次是大肠杆菌和伤寒沙门氏菌。因此，本研究结果证实了五味子果实作为一种天然吸附剂同时去除废水中的亚甲基蓝染料和病原菌的巨大潜力。关键词：Embelia schimperi、吸附、等温线、动力学、亚甲蓝、水载病原体 Bull.Chem.Soc.2024, 38(2), 281-296. DOI: https://dx.doi.org/10.4314/bcse.v38i2.1

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来源期刊

Bulletin of the Chemical Society of Ethiopia 化学-化学综合

CiteScore

2.20

自引率

8.30%

发文量

113

审稿时长

6-12 weeks

期刊介绍： The Bulletin of the Chemical Society of Ethiopia (BCSE) is a triannual publication of the Chemical Society of Ethiopia. The BCSE is an open access and peer reviewed journal. The BCSE invites contributions in any field of basic and applied chemistry.