Environmental Functional Materials for Pollutant Separation and Remediation

A special issue of Separations (ISSN 2297-8739). This special issue belongs to the section "Materials in Separation Science".

Deadline for manuscript submissions: 10 July 2026 | Viewed by 582

Special Issue Editors


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Guest Editor
School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China
Interests: high-efficiency and low-carbon treatment of wastewater and resource recovery (advanced oxidation and adsorption) based on new environmental functional materials; high-value resource treatment of solid waste

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Guest Editor
School of Atmospheric and Remote Sensing, Wuxi University, Wuxi 214105, China
Interests: pollution control chemistry; environment functional material

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Guest Editor
Chinese Research Academy of Environmental Sciences, Beijing 100012, China
Interests: environmental functional materials; clean production technologies and concepts; reduction in heavy metal sources

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Guest Editor
School of Environmental and Spatial Informatics, China University of Mining and Technology, Xuzhou 221100, China
Interests: design of functional materials for photocatalytic/electrocatalytic H2O2 production; aimed at energy and environmental remediation applications

Special Issue Information

Dear Colleagues,

Due to the rapid development of technology and society, an abundance of new challenges are being faced in polluted water treatment processes, such as emerging pollutants (pharmaceuticals and personal care products (PPCPs), fluorochemicals, micro-nano plastics, etc.), complex components, and extreme environments (high-salinity), etc. Fortunately, the development of novel environmental functional materials for adsorption, coagulation, advanced oxidation, photo-catalysis, electrocatalysis, piezoelectric catalysis, membrane filtration, and bio-treatment technologies supply the potential methods to solve these challenges. Certainly, the modification of the corresponding treatment devices related to these novel functional materials will further accelerate problem solving. Consequently, this topic is established to comprehensively collect the latest studies about the modification and application of functional materials and their related devices for treatment of polluted or wastewater. In this way, the main and potential prospective design perspectives and modification methods for new and efficient wastewater treatment technology may be collated and shared.

Dr. Kunlun Yang
Prof. Dr. Jian Mei
Dr. Feilong Zhang
Dr. Jingzhen Zhang
Guest Editors

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Keywords

  • environmental functional materials
  • novel treatment technology
  • water treatment
  • emerging pollutants
  • modification and application

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Published Papers (1 paper)

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Research

21 pages, 3584 KB  
Article
Efficient and Rapid Removal of Cationic Methylene Blue from Aqueous Solution by Alkali-Treated Bamboo Powders as Biosorbents
by Qin Wang, Yaohui Xu, Jinqiang Yu, Runhong Xia, Zhiyun Jiang, Yuan Zhang and Fangyu Xiong
Separations 2026, 13(2), 57; https://doi.org/10.3390/separations13020057 - 6 Feb 2026
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Abstract
To develop low-cost and renewable materials for treating dye wastewater, an efficient biosorbent was prepared from Bambusa emeiensis bamboo powders (BPs) via a simple alkali pretreatment. Systematic investigation revealed that NaOH concentration was critical for enhancing adsorption performance. Under optimal conditions (NaOH ≥ [...] Read more.
To develop low-cost and renewable materials for treating dye wastewater, an efficient biosorbent was prepared from Bambusa emeiensis bamboo powders (BPs) via a simple alkali pretreatment. Systematic investigation revealed that NaOH concentration was critical for enhancing adsorption performance. Under optimal conditions (NaOH ≥ 0.2 mol/L, dosage = 10.0 g/L), the BPs achieved over 96% removal of cationic Methylene Blue (MB, 20 mg/L) within 20 min, demonstrating rapid kinetics. The adsorption process followed the Langmuir isotherm model with a maximum adsorption capacity of 4.1 mg/g without adjusting the pH of the solution and complied with the pseudo-second-order kinetic model. Thermodynamic analysis confirmed the spontaneous (ΔG < 0) and exothermic (ΔH = −52.73 kJ/mol) nature of the adsorption. Notably, the alkali-treated BPs exhibited a pronounced preference for the cationic dye, achieving a high removal rate of 96.5% for MB, in contrast to a much lower removal of 23.6% for the anionic dye AO7 under identical single-dye conditions, attributed to the enhanced surface negative charge after alkali treatment. Furthermore, the BPs maintained a high removal efficiency of 91.2% after eight adsorption-desorption cycles using 0.1 mol/L HCl as eluent, demonstrating excellent reusability. This study presents a feasible and sustainable strategy for designing regenerative bamboo-based biosorbents with rapid and preferential adsorption capabilities for cationic dye wastewater. Full article
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