文献类型：期刊文献

英文题名：A novel sponge composite of chitosan-sodium tripolyphosphate-melamine for anionic dye Orange II removal

作者：Hu, Jiani[1];Chen, Kexin[1];Xiang, Minghan[1];Wei, Jianxiang[1];Zeng, Yang[1];Qin, Yan[1];Zhang, Lingfan[1,2];Zhang, Wenqing[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Res Ctr Anal & Test, Shanghai 200237, Peoples R China

年份：2024

卷号：270

外文期刊名：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

收录：;EI(收录号：20242016081182);WOS:【SCI-EXPANDED(收录号:WOS:001241315000001)】；

基金：Funding: This work was supported by the National Natural Science Foundation of China [grant number 21407050] . We also thank the Research Center of Analysis and Test (ECUST) for help on data and characterization.

语种：英文

外文关键词：Chitosan-sodium tripolyphosphate-melamine sponge composite; Orange II; Adsorption; Anionic dye

摘要：Since the potential carcinogenic, toxic and non-degradable dyes trigger serious environmental contamination by improper treatment, developing novel adsorbents remains a major challenge. A novel high efficiency and biopolymer-based environmental-friendly adsorbent, chitosan-sodium tripolyphosphate-melamine sponge (CTS-STPP-MS) composite, was prepared for Orange II removing with chitosan as raw material, sodium tripolyphosphate as cross-linking agent. The composite was carefully characterized by SEM, EDS, FT-IR and XPS. The influence of crosslinking conditions, dosage, pH, initial concentration, contacting time and temperature on adsorption were tested through batch adsorption experiments. CTS-STPP-MS adsorption process was exothermic, spontaneous and agreed with Sips isotherm model accompanying the maximum adsorption capacity as 948 mg.g(-1) (pH = 3). Notably, the adsorption performance was outstanding for high concentration solutions, with a removal rate of 97 % in up to 2000 mg.L-1 OII solution (100 mg sorbent dosage, 50 mL OII solution, pH = 3, 289.15 K). In addition, the adsorption efficiency yet remained 97.85 % after 5 repeated adsorption-desorption cycles. The driving force of adsorption was attributed to electrostatic attraction and hydrogen bonds which was proved by adsorption results coupled with XPS. Owing to the excellent properties of high-effective, environmental-friendly, easy to separate and regenerable, CTS-STPP-MS composite turned out to be a promising adsorbent in contamination treatment.