微塑料抑制了三乙烯在改性生物炭上的吸收
1State Environment Protection Engineering Center for Urban Soil Contamination Control and Remediation, Shanghai Academy of Environmental Sciences, Shanghai 200233, China
概括
微塑料显著降低了生物炭 (BC) 在从土壤和水中去除三乙烯 (TCE) 的有效性. 这种相互作用对于环境修复策略至关重要.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 水的化学 水的化学
背景情况:
- 生物炭 (BC) 用于从土壤和水中去除三乙烯 (TCE).
- 微塑料 (MP) 是新兴的环境污染物.
- MPs对BC对TCE吸收的影响尚不清楚.
研究的目的:
- 调查TCE在BC和BC与MP (聚乙烯[PE]和聚烯[PS]) 结合的吸附行为.
- 为了阐明BC修改对TCE吸附的影响,在MPs的存在下.
主要方法:
- 进行了批量吸附动力学和同温实验.
- 在未修改的BC,修改的BC和BC-MP复合物上评估了TCE吸附.
主要成果:
- HCl和NaOH的修饰增强了BC上的TCE吸附,而HNO3的修饰则抑制了它.
- 存在PE和PS显著降低了BC样本上的TCE吸附能力.
- 在BC表面上MPs的优先吸附可能导致了这种抑制.
结论:
- 微塑料改变了生物炭上的TCE吸附行为.
- MPs抑制了BC的TCE吸附能力,因此需要考虑它们在补救中的相互作用.
- 结合使用BC和MPs需要仔细评估有效的TCE去除.
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