Preparation of a novel lactose-lignin hydrogel catalyst with self-reduction capacity for nitrogenous wastewater treatment
作者机构：Qilu Univ Technol Shandong Acad Sci Key Lab Pulp & Paper Sci & Technol Minist Educ Jinan 250353 Peoples R China Dalian Polytech Univ Liaoning Prov Key Lab Paper & Pulp Engn Dalian Key Lab High Value Applicat & Dev Bot Resou Key Lab High Value Utilizat Bot Resources China Li Dalian 116034 Peoples R China
出 版 物：《FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING》 (化学科学与工程前沿（英文版）)
年 卷 期：2024年第18卷第9期
页 面：99-0页
核心收录：
学科分类：0817[工学-化学工程与技术] 08[工学]
基 金：National Natural Science Foundation of China [21776026, 22075034] Liaoning Revitalization Talents Program [XLYC1902037] Foundation of Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences) [KF202114] Dalian high level talent innovation support program (Dalian Youth Science and Technology Star Project Support Program) [2023RQ043]
主 题：carboxylated lactose Ag NPs self-reduction nitrogenous wastewater ORGANIC-DYES ACTIVE CATALYST GREEN SYNTHESIS P-NITROPHENOL NANOPARTICLES EFFICIENT 4-NITROPHENOL REMOVAL MICROSPHERES DEGRADATION
摘 要：A novel carboxylated lactose/sodium lignosulfonate/polyacrylic acid hydrogel composites with self-reduction capacity was successfully synthesized by self-assembly method. The hydrogel with well-developed porous structure provided abundant anchoring points and reduction capacity for transforming Ag+ into silver nanoparticles. Silver nanoparticles dispersed among the network of hydrogel and the composites exhibited catalytic capacity. The catalytic performance was evaluated via degradation of p-nitrophenol, rhodamine B, methyl orange and methylene blue, which were catalyzed with corresponding reaction rate constants of 0.04338, 0.07499, 0.04891, and 0.00628 s-1, respectively. In addition, the catalyst exhibited stable performance under fixed-bed condition and the corresponding conversion rate still maintained more than 80% after 540 min. Moreover, the catalytic performance still maintained effective in tap water and simulated seawater. The catalytic efficiency still remained 99.7% with no significant decrease after 8 cycles.
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