Scalable and sustainable remediation of OPD-contaminated aquifer via amphipathic multi-component covalent organic polymers

IF 13.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2024-11-13 DOI:10.1016/j.cej.2024.157637

Aiyuan Jia, Yongsheng Zhao, Jiahao Xing, Zhi Liu, Junhong Gu, Mei Hong, Yangxue Li

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引用次数: 0

Abstract

In-situ injection technology provides a sustainable approach for decontaminating o-phenylenediamine (OPD). However, existing agents often exhibit either exclusive hydrophilicity or hydrophobicity, posing challenges in achieving both effective interception and transport within the aquifer. Herein, a facilely and massively synthesized amphipathic multi-component covalent-organic polymer (SLEL-4) demonstrates appreciable transportability (L_max > 182.81 cm) and exceptional competitive adsorption ability (four times that of TWEEN 80) for OPD removal. Meanwhile, quantitative analysis expounds the underlying mechanisms. Column and sandbox experiments co-unravel that SLEL-4 effectively remediates actual groundwater contaminated with OPD, achieving sustained efficacy up to 48 h. Impressively, the constructed SLEL-4 deserves recognition as an eco-responsible and cost-optimal option for groundwater treatment according to Life Cycle Assessment (LCA). Overall, this work offers a refreshing perspective on fabricating amphipathic COPs as promising replacements for surfactants in the decontamination of non-aqueous phase liquids (NAPLs), while underscoring the environmental burdens associated with scalable implementation.

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通过两性多组分共价有机聚合物对受 OPD 污染的含水层进行可扩展、可持续的修复

原位注入技术为净化邻苯二胺（OPD）提供了一种可持续的方法。然而，现有的药剂通常表现出独有的亲水性或疏水性，这给实现有效拦截和在含水层内的传输带来了挑战。在本文中，一种简单、大量合成的两性多组分共价有机聚合物（SLEL-4）在去除 OPD 方面表现出明显的迁移性（Lmax > 182.81 厘米）和卓越的竞争吸附能力（是 TWEEN 80 的四倍）。同时，定量分析揭示了其基本机理。柱实验和沙箱实验共同揭示了 SLEL-4 可有效修复受 OPD 污染的实际地下水，并可实现长达 48 小时的持续功效。令人印象深刻的是，根据生命周期评估（LCA），所构建的 SLEL-4 是一种对生态负责且成本最优的地下水处理方案，值得肯定。总之，这项研究为制造两性 COPs 提供了一个令人耳目一新的视角，在非水相液体（NAPLs）的净化过程中，它有望替代表面活性剂，同时强调了与可扩展实施相关的环境负担。

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.