章鱼状生物质基广谱水净化絮凝剂

IF 12.4 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Water Research Pub Date : 2025-06-05 DOI:10.1016/j.watres.2025.123961

Wei Wu , Chunli Li , Junjie Qi , Xingjiang Wu , Jing Fang , Zhiqiu Ye , Xiaowei Jiang , Huazhang Zhao , Hao Li

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引用次数: 0

摘要

絮凝在水净化中起着至关重要的作用，直接影响着处理效率和成本。传统絮凝剂主要针对胶体和颗粒，但对溶解的有机化合物和新出现的污染物的效果有限，导致下游处理成本增加。在这里，我们提出了一种创新的章鱼状生物质絮凝剂（OBF），设计用于高效，一步去除广谱水污染物。OBF的结构利用了木质素的界面相互作用（氢键、疏水相互作用和π-π相互作用）和阳离子分支的静电吸引，对腐植酸、高岭土、微塑料和细菌（96.1%的大肠杆菌、100%的金黄色葡萄球菌）的去除效率超过90%，对微藻的去除效率达到98.8%。在实际应用中，OBF将湖水浊度降低至0.75 NTU，将城市污水化学需氧量（COD）降低85.2%，优于常规絮凝剂。OBF具有低毒性、广泛的pH适应性和可持续的生物质来源，为水处理提供了一种可扩展的、经济高效的解决方案。该接枝聚合物的结构设计和界面调制是多功能水净化技术的重要进展。

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Octopus-like biomass-based flocculant for broad-spectrum water purification

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Octopus-like biomass-based flocculant for broad-spectrum water purification

Flocculation plays a critical role in water purification, directly influencing treatment efficiency and costs. Conventional flocculants primarily target colloids and particulates but exhibit limited efficacy against dissolved organic compounds and emerging contaminants, leading to increased downstream treatment costs. Here, we present an innovative octopus-like biomass-based flocculant (OBF) designed for efficient, one-step removal of a broad-spectrum of water contaminants. The structure of OBF harnesses lignin's interfacial interactions (hydrogen bonding, hydrophobic interactions, and π-π interactions) combined with the electrostatic attraction of cationic branches, achieving removal efficiencies exceeding 90% for humic acid, kaolin, microplastics, and bacteria (96.1% Escherichia coli, 100% Staphylococcus aureus), alongside 98.8% microalgae harvesting. In practical applications, OBF reduced lake water turbidity to 0.75 NTU and municipal wastewater chemical oxygen demand (COD) by 85.2%, surpassing the performance of conventional flocculants. With low toxicity, broad pH adaptability, and sustainable biomass sourcing, OBF offers a scalable, cost-effective solution for water treatment. The structural design and interfacial modulation of this graft polymer represent a significant advance in multifunctional water purification technologies.

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来源期刊

Water Research 环境科学-工程：环境

CiteScore

20.80

自引率

9.40%

发文量

1307

审稿时长

38 days

期刊介绍： Water Research, along with its open access companion journal Water Research X, serves as a platform for publishing original research papers covering various aspects of the science and technology related to the anthropogenic water cycle, water quality, and its management worldwide. The audience targeted by the journal comprises biologists, chemical engineers, chemists, civil engineers, environmental engineers, limnologists, and microbiologists. The scope of the journal include: •Treatment processes for water and wastewaters (municipal, agricultural, industrial, and on-site treatment), including resource recovery and residuals management; •Urban hydrology including sewer systems, stormwater management, and green infrastructure; •Drinking water treatment and distribution; •Potable and non-potable water reuse; •Sanitation, public health, and risk assessment; •Anaerobic digestion, solid and hazardous waste management, including source characterization and the effects and control of leachates and gaseous emissions; •Contaminants (chemical, microbial, anthropogenic particles such as nanoparticles or microplastics) and related water quality sensing, monitoring, fate, and assessment; •Anthropogenic impacts on inland, tidal, coastal and urban waters, focusing on surface and ground waters, and point and non-point sources of pollution; •Environmental restoration, linked to surface water, groundwater and groundwater remediation; •Analysis of the interfaces between sediments and water, and between water and atmosphere, focusing specifically on anthropogenic impacts; •Mathematical modelling, systems analysis, machine learning, and beneficial use of big data related to the anthropogenic water cycle; •Socio-economic, policy, and regulations studies.