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通过从贝中提取的磁性生物炭从水溶液中去除聚乙烯纳米圈和碎片

Yu Wang¹, Hao Wang², Yirui Xing³

¹School of Marine Science and Engineering, Nanjing Normal University, Nanjing 210023, China; School of Oceanography, Shanghai Jiao Tong University, Shanghai 200240, China.

Journal of contaminant hydrology

|December 26, 2025

概括

来自贝的磁性生物炭 (M-CSBC) 有效地从水中去除微/纳米塑料. 这种生物炭具有很高的吸附能力,并像"磁性擦拭器"一样,可以有效地修复水生塑料.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学化学化学

背景情况:

微/纳米塑料污染对水生生态系统构成重大威胁.
生物炭吸附是消除微/纳米塑料的公认策略.
需要新的磁性生物炭材料来提高去除效率.

研究的目的:

从贝中合成和描述磁性生物炭 (M-CSBC).
评估M-CSBC在从水系统中去除聚乙烯纳米塑料 (PSNPs) 和微塑料 (PSMPs) 的有效性.
调查吸附机制和影响因素 (pH,盐度) 的塑料去除.

主要方法:

热解和磁性修饰以制备M-CSBC.
批量吸附实验以测试PSNP和PSMP的去除.
兰木尔吸附模拟以确定容量.
分析pH值和盐度对去除效率的影响.

主要成果:

M-CSBC 证明了各种大小和形状的 PSNP 和 PSMP 的优秀去除.
对于PSNP (100 nm),最大吸附能力为90.090 mg/g,对于PSMP (0.35-0.45 mm),最大吸附能力为14.472 g/g.
清除效率受pH值和盐度的影响,在中性酸性盐水条件下性能最佳.

结论:

M-CSBC 是水生环境中微/纳米塑料修复的高效吸附剂.
移除过程包括物理捕获,化学吸附和磁性分离.
M-CSBC显示了在净化水中的实际应用的巨大潜力.

关键词:

吸附方式吸附方式吸附方式水性环境是一种水环境.生物炭是一种生物炭.的贝,的贝.磁化是一种磁化.微型/纳米塑料是一种塑料.

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