Cellulose Acetate-nanoMOF Beads: A Safe, Sustainable and Scalable Solution for Lead Remediation in Complex Water Systems

IF 5.8 2区环境科学与生态学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Environmental Science: Nano Pub Date : 2025-05-15 DOI:10.1039/d5en00056d

Prathmesh Bhadane, Swaroop Chakraborty

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引用次数: 0

Abstract

Lead [Pb(II)] contamination poses a critical environmental and public health challenge, necessitating innovative and sustainable remediation strategies. This study presents cellulose acetate (CA)-BNMG-1 nanoMOF beads, synthesised via a green, water-based process without hazardous chemicals. By embedding this nanoMOF into a CA polymer matrix, the beads achieve remarkable Pb(II) removal efficiencies exceeding 80% in complex aqueous systems, including canal water and artificial seawater, even with competing ions and naturally occurring microbial contaminants in canal water. The beads exhibit significantly enhanced selectivity for Pb(II), with separation factors (SFs) improving from 2.5 to 350 for Pb/Mn, 57.4 to 220.6 for Pb/Ni, and 150.6 to 314 for Pb/Cd compared to the parent BNMG-1 nanoMOF. Structural stability is ensured, with Cu(II) leaching reduced to below 5% at higher and less than 1% at lower Pb(II) concentrations (5 bead/mL). Furthermore, the beads demonstrate outstanding reusability, retaining over 95% Pb(II) removal efficiency after three cycles. The CA matrix enhances nanoMOF stability, facilitating bead recovery via simple filtration, addressing challenges in scalability and sustainability. This work aligns with Safe and Sustainable by Design (SSbD) principles, providing an eco-friendly and scalable solution for heavy metal remediation, advancing sustainable water treatment technologies for real-world applications.

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醋酸纤维素-纳米微球：复杂水系统中铅修复的安全、可持续和可扩展的解决方案

铅[Pb(II)]污染构成了严峻的环境和公共卫生挑战，需要创新和可持续的补救战略。本研究提出了醋酸纤维素(CA)-BNMG-1纳米of微珠，通过绿色的水基工艺合成，不含有害化学物质。通过将纳米omof嵌入CA聚合物基质中，微珠在复杂的水体系（包括运河水和人工海水）中实现了超过80%的Pb（II）去除效率，即使在运河水中存在竞争离子和天然存在的微生物污染物。与亲本BNMG-1纳米of相比，该珠对Pb（II）的选择性显著增强，Pb/Mn的分离系数（sf）从2.5提高到350，Pb/Ni的分离系数（sf）从57.4提高到220.6，Pb/Cd的分离系数（sf）从150.6提高到314。保证了结构稳定性，在较高的Pb（II）浓度下，Cu（II）浸出率降至5%以下，在较低的Pb（II）浓度下（5珠/mL）， Cu（II）浸出率降至1%以下。此外，微珠具有出色的可重复使用性，在三次循环后仍保持95%以上的Pb（II）去除效率。CA矩阵增强了纳米omof的稳定性，通过简单的过滤促进了头的恢复，解决了可扩展性和可持续性的挑战。这项工作符合安全和可持续设计（SSbD）原则，为重金属修复提供了环保和可扩展的解决方案，推动了可持续水处理技术在现实世界中的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Environmental Science: Nano CHEMISTRY, MULTIDISCIPLINARY-ENVIRONMENTAL SCIENCES

CiteScore

12.20

自引率

5.50%

发文量

290

审稿时长

2.1 months

期刊介绍： Environmental Science: Nano serves as a comprehensive and high-impact peer-reviewed source of information on the design and demonstration of engineered nanomaterials for environment-based applications. It also covers the interactions between engineered, natural, and incidental nanomaterials with biological and environmental systems. This scope includes, but is not limited to, the following topic areas: Novel nanomaterial-based applications for water, air, soil, food, and energy sustainability Nanomaterial interactions with biological systems and nanotoxicology Environmental fate, reactivity, and transformations of nanoscale materials Nanoscale processes in the environment Sustainable nanotechnology including rational nanomaterial design, life cycle assessment, risk/benefit analysis