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从消费后的PET塑料瓶废物中生产用于废水处理的高效活性碳

Olajumoke Alabi-Babalola^1,2, Elizabeth Aransiola², Edidiong Asuquo¹

¹Department of Chemical Engineering, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.

|January 8, 2024

概括

塑料垃圾中的活性炭有效地从水中去除重金属. 这种可持续的方法为废物管理和水净化提供了有希望的解决方案.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
化学工程是化学工程的重要组成部分.

背景情况:

塑料废物,特别是聚乙烯二甲酸盐 (PET),构成了重大的环境挑战.
传统的从水中去除重金属的方法可能昂贵且效率较低.
从废物中开发可持续吸附剂对于环境修复至关重要.

研究的目的:

从消费后的PET废物中合成活性炭.
评估PET衍生活性炭在从水溶液中去除,和离子方面的有效性.
为了研究重金属去除的吸附机制和动力学.

主要方法:

用化学活性剂 (H2SO4和KOH) 溶解PET废物.
合成的活性炭的特征.
批量吸附实验以确定重金属去除效率.
吸附等温 (弗朗德利希) 和动力学 (伪二次) 建模.

主要成果:

获得了Mn2+ (98%),Cr3+ (87%) 和Co2+ (88%) 的高去除百分比.
弗洛伊德利希吸附等热量为实验数据提供了很好的匹配 (R2 ≈ 0.99-1).
伪二次运动模型准确地描述了吸附过程,表明了电子交换.

结论:

来自PET的活性炭是一种可行的,可持续的替代商业活性炭,用于重金属的去除.
这个过程提供了塑料废物管理和水净化的双重好处.
吸附过程是高效的,并遵循多阶段的动力控制.

关键词:

活性炭是一种活性炭.吸附方式吸附方式吸附方式化学塑料回收利用化学塑料回收利用废弃PET瓶的使用情况热解是一种热解过程.

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