西安交通大学人居环境与建筑工程学院,710049,西安
作者简介:陈颖(1999—),女,博士生;
邓时海(通信作者),男,研究员,博士生导师。
收稿:2025-05-31,
纸质出版:2026-02-10
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陈颖, 邓时海, 韩杰, 等. 新型聚合水凝胶太阳能蒸发材料构建与同步脱盐截酚研究[J]. 西安交通大学学报, 2026,60(2):113-124.
CHEN Ying, DENG Shihai, HAN Jie, et al. Construction of a Novel Polymeric Hydrogel Solar Evaporation Material and Study on Simultaneous Desalination and Phenol Interception[J]. Journal of Xi'an Jiaotong University, 2026, 60(2): 113-124.
陈颖, 邓时海, 韩杰, 等. 新型聚合水凝胶太阳能蒸发材料构建与同步脱盐截酚研究[J]. 西安交通大学学报, 2026,60(2):113-124. DOI: 10.7652/xjtuxb202602011.
CHEN Ying, DENG Shihai, HAN Jie, et al. Construction of a Novel Polymeric Hydrogel Solar Evaporation Material and Study on Simultaneous Desalination and Phenol Interception[J]. Journal of Xi'an Jiaotong University, 2026, 60(2): 113-124. DOI: 10.7652/xjtuxb202602011.
针对含酚废水
深度脱盐与酚类有机物高效回收的双重需求问题,基于太阳能界面蒸发水、盐及有机质的传输机理,研发了聚(丙烯酰胺-海藻糖)/炭黑(PAT/CB)水凝胶材料。通过分子设计和结构优化,同步强化PAT/CB水凝胶的光热蒸发与酚污染物截留能力,在脱盐过程中降低冷凝水中的酚含量,选择富集酚类物质为后续回收酚提供高浓度原料,从而实现了高盐含酚废水的同步脱盐与酚拦截。研究结果表明:通过调控海藻糖(Tre)比例和单体含量可优化水凝胶溶胀性能,炭黑赋予材料97%的宽谱光吸收率和14.9℃的热限域特性,协同Tre的水合作用实现了77%的光热转换效率和1.68 kg/(m
2
·h)的蒸发速率,在NaCl质量分数为3.5%~10.5%的高盐环境中具有稳定的蒸发性能;差示扫描量热法与拉曼光谱分析结果证实,Tre能够提升中间水比例至26%,显著降低蒸发焓至1895 J/g,从分子层面揭示了蒸发机制,同步实现了大于99%的盐离子拦截和73%的苯酚截留效率。该研究可为太阳能界面蒸发技术在高盐含酚废水处理中的应用提供理论依据与技术支持。
To address the dual requirements of deep desalination and efficient recovery of phenolic organics from phenol-containing wastewater,a poly(acrylamide-trehalose)/carbon black(PAT/CB)hydrogel material was developed based on the transport mechanisms of water,salts,and organic matter in solar interfacial evaporation.Through molecular design and structural optimization,both the photothermal evaporation performance and phenol pollutant interception capability of the PAT/CB hydrogel were simultaneously enhanced.During the desalination process,the phenol content in the condensate water was reduced,while phenolic compounds were selectively enriched,providing high-concentration raw material for subsequent phenol recovery,thereby achieving simultaneous desalination and phenol interception in high-salinity phenol-containing wastewater.The results show that the swelling properties of the hydrogel can be optimized by adj usting the trehalose(Tre)ratio and monomer content.Carbon black imparts a broadband light absorption rate of 97% and a thermal localization characteristic of 14.9℃ to the material. Combined with the hydration effect of Tre,a photothermal conversion efficiency of 77% and an evaporation rate of 1.68 kg/(m
2
·h)were achieved,with stable evaporation performance maintained in high-salinity environments containing 3.5% to 10.5% NaCl. Differential scanning calorimetry and Raman spectroscopy analyses indicate that Tre increases the proportion of intermediate water to 26%,signific
antly reducing the evaporation enthalpy to 1895 J/g,thus revealing the evaporation mechanism at the molecular level.Simultaneous interception efficiencies of over 99% for salt ions and 73% for phenol were achieved.This study provides a theoretical basis and technical support for the application of solar interfacial evaporation technology in the treatment of high-salinity phenol-containing wastewater.
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