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- W3180898033 abstract "In this study, the hydrogel was prepared by dissolving and regenerating poplar cellulose in NaOH/urea/water system. The TEMPO-oxidized cellulose hydrogels (TCH) were prepared using microwave-assisted accelerated TEMPO-oxidation system. Polyethyleneimine (PEI) was grafted onto TCH with glutaraldehyde as a cross-linking agent and the products named as TCP. The hydrogels were characterized by SEM, FTIR, XPS, and elemental analyzer. The maximum adsorption capacities of Cu2+ and Pb2+ by TCP were 109.89 mg/g and 279.32 mg/g, respectively. TCP was a single molecule adsorption process with better fitting of the Langmuir model. Adsorption kinetics showed that the Pb2+ adsorption rate of TCP was higher than that for Cu2+. The Cu2+ affinity of TCP was higher than the Pb2+. The adsorption capacity of TCP for Cu2+ and Pb2+ was 58.26 mg/g and 91.96 mg/g, respectively, after five cycles. This study provided a promising option of preparing an efficient and recyclable adsorbent in treating wastewater containing heavy metal, such as Cu2+ and Pb2+." @default.
- W3180898033 created "2021-07-19" @default.
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- W3180898033 date "2021-07-07" @default.
- W3180898033 modified "2023-10-11" @default.
- W3180898033 title "TEMPO-oxidized cellulose hydrogel for efficient adsorption of Cu2+ and Pb2+ modified by polyethyleneimine" @default.
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- W3180898033 doi "https://doi.org/10.1007/s10570-021-04052-w" @default.
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