Preparation of Zirconium Phosphate/Carboxymethyl Cellulose Composite Hydrogel for Cu2+ Removal

IF 4.7 3区工程技术 Q2 ENGINEERING, ENVIRONMENTAL

Journal of Polymers and the Environment Pub Date : 2024-09-03 DOI:10.1007/s10924-024-03387-2

Xue-Li Liu, Zhi-Peng Xie, Chun-Feng Zhu

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Abstract

Zirconium phosphate (α-ZrP)/carboxymethyl cellulose (CMC) composite hydrogels were prepared through graft copolymerization by the easily scaling-up method. The α-ZrP/CMC hydrogels were characterized through FI-IR, SEM (EDS-SEM), XRD, TGA, BET, swelling and zeta potential measurements. The adsorption of Cu²⁺ by α-ZrP/CMC hydrogels in aqueous solutions was also studied. The results show that α-ZrP/CMC hydrogels have great adsorption capacity for Cu²⁺. The analysis results indicated that the adsorption mechanisms of α-ZrP/CMC hydrogel on Cu²⁺ are mainly through the electrostatic interaction. The adsorption process conforms to the Langmuir model (R² = 0.9953) and Quasi-second order kinetic model (R² = 1). Under the experimental conditions explored, the optimal amount of α-ZrP and the DS of CMC are chosen as 0.5 wt% and 1.2, and the adsorption capacity of ZrP-0.5%-CMC-1.2 hydrogel for Cu²⁺ is 121.21 mg/g. The adsorption isotherms, adsorption kinetics, and thermodynamics studies were also conducted to investigate the adsorption mechanism. Therefore, α-ZrP/CMC hydrogels present excellent adsorption efficiency, shows the potential application in future treatment of Cu²⁺ wastewater.

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制备用于去除 Cu2+ 的磷酸锆/羧甲基纤维素复合水凝胶

通过接枝共聚法制备了磷酸锆（α-ZrP）/羧甲基纤维素（CMC）复合水凝胶。通过 FI-IR、SEM（EDS-SEM）、XRD、TGA、BET、膨胀率和 zeta 电位测量对 α-ZrP/CMC 水凝胶进行了表征。还研究了水溶液中 α-ZrP/CMC 水凝胶对 Cu2+ 的吸附。结果表明，α-ZrP/CMC 水凝胶对 Cu2+ 有很强的吸附能力。分析结果表明，α-ZrP/CMC 水凝胶对 Cu2+ 的吸附机理主要是通过静电作用。吸附过程符合 Langmuir 模型（R2 = 0.9953）和准二阶动力学模型（R2 = 1）。在实验条件下，α-ZrP 的最佳用量和 CMC 的 DS 分别为 0.5 wt% 和 1.2，ZrP-0.5%-CMC-1.2 水凝胶对 Cu2+ 的吸附量为 121.21 mg/g。为了研究吸附机理，还进行了吸附等温线、吸附动力学和热力学研究。因此，α-ZrP/CMC 水凝胶具有优异的吸附效率，在未来处理 Cu2+ 废水中具有潜在的应用前景。

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来源期刊

Journal of Polymers and the Environment 工程技术-高分子科学

CiteScore

9.50

自引率

7.50%

发文量

297

审稿时长

9 months

期刊介绍： The Journal of Polymers and the Environment fills the need for an international forum in this diverse and rapidly expanding field. The journal serves a crucial role for the publication of information from a wide range of disciplines and is a central outlet for the publication of high-quality peer-reviewed original papers, review articles and short communications. The journal is intentionally interdisciplinary in regard to contributions and covers the following subjects - polymers, environmentally degradable polymers, and degradation pathways: biological, photochemical, oxidative and hydrolytic; new environmental materials: derived by chemical and biosynthetic routes; environmental blends and composites; developments in processing and reactive processing of environmental polymers; characterization of environmental materials: mechanical, physical, thermal, rheological, morphological, and others; recyclable polymers and plastics recycling environmental testing: in-laboratory simulations, outdoor exposures, and standardization of methodologies; environmental fate: end products and intermediates of biodegradation; microbiology and enzymology of polymer biodegradation; solid-waste management and public legislation specific to environmental polymers; and other related topics.