4.6 Article

The fate and risk of microplastic and antibiotic sulfamethoxazole coexisting in the environment

期刊

ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
卷 45, 期 6, 页码 2905-2915

出版社

SPRINGER
DOI: 10.1007/s10653-022-01385-8

关键词

Polyamide microplastics; Sorption; Desorption; Sulfamethoxazole; Reservoir water

向作者/读者索取更多资源

With the increasing amount of plastic entering the environment, microplastic pollution has become a major concern. This study investigates the adsorption behavior of the antibiotic sulfamethoxazole (SMX) onto virgin and aged polyamide 6 (PA6) microplastics. The results reveal that microplastics have a strong ability to adsorb heavy metals or organic pollutants. Additionally, the study emphasizes the significant impact of pH on the adsorption process.
With huge amount of plastic entering to the environment, microplastic pollution has become a great concern. Microplastic behavior in the environment is important to evaluate its harm to ecosystem and human beings. It has been found that microplastic can be used as a carrier to adsorb and enrich heavy metals or organic pollutants in water or soil. With the development of industry and medicine, antibiotics are improperly used in many countries and most of them end up in wastewater. This study investigates the adsorption behavior of sulfamethoxazole (SMX) antibiotic onto virgin and aged polyamide 6 (PA6) microplastics. The maximum adsorption amount was 0.089 mg SMX/g PA6 at 25 degrees C and pH 7 with initial SMX concentration of 2 mg/L. Results reveal that the adsorption was mainly due to the chemical bounding. The impact of pH, salinity, and humic acid on the adsorption have been studied, and it was found that the pH has significant impact on the adsorption. At pH 5, the adsorption amount was 0.27 mg/g which is two times higher than that at pH 7. The SMX adsorbed on PA6 tends to be more likely desorbed in reservoir water than in ultrapure water. For instance, the desorption amount of SMX from virgin PA6 was 0.15 mg/L in reservoir water but 0.10 mg/L in ultrapure water. The study indicates that microplastics have great threat to environment.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据