Synthesis of waterborne polyurethane-humic acid cross-linked biomass porous materials for the adsorption of methylene blue  

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作  者:Shanghong Ma Jianbo Qu Haitao Zhang Xiubin Cui Peng Ye Qingfei Hu Mingzhen Chao 

机构地区:[1]State Key Laboratory of Biobased Material and Green Papermaking,Qilu University of Technology,Shandong Academy of Sciences,Jinan 250353,China [2]Faculty of Light Industry,Qilu University of Technology,Shandong Academy of Sciences,Jinan 250353,China

出  处:《Chinese Journal of Chemical Engineering》2024年第3期27-38,共12页中国化学工程学报(英文版)

基  金:supported by the National Natural Science Foundation of China(21704047);the Natural Science Foundation of Shandong Province(ZR2017BB078,ZR2021QE137);the Foundation of State Key Laboratory of Biobased Material and Green Papermaking(ZZ20190407);the Major scientific and technological innovation projects of Shandong Province(2019JZZY020230).

摘  要:A series of adsorbent materials(WPU-HAx-y)with a three-dimensional porous structure,green sustainability,and excellent performance were prepared and evaluated for the removal of methylene blue using nontoxic and environmentally friendly waterborne polyurethane as the matrix material and humic acid,a biomass material,as the functional material.The newly synthesized adsorbents were characterized by infrared spectroscopy,scanning electron microscopy,specific surface area,and thermogravimetric.The effects of contact time(0-8 h),starting concentration(10-100 mg·L^(-1)),pH(3-11),solution temperature(30-60℃),and coexisting ions(Ca2+,Na+,K+,Mg2+)on the performance were investigated.Pseudo-first-order,pseudo-second-order,elovich,and intra-particle diffusion models were used to analyze the adsorption kinetics;the Langmuir,Freundlich,Temkin,and Dubin-Radushkovich adsorption isotherms were evaluated;and the adsorption behavior of the adsorbent materials was found to be more appropriate for the pseudo-second-order model for chemical pollutant removal than the Langmuir model,which depends on monolayer adsorption.WPU-HA2-3 stood out with a maximum adsorption capacity of 813.0081 mg·g^(-1) fitted to the pseudo-second-order and 309.2832 mg·g^(-1) fitted to the Langmuir model,showing superior adsorption performance and regenerability.

关 键 词:Porous media BIOENERGY Sustainability Waste water 

分 类 号:TQ424[化学工程] TB383.4[一般工业技术—材料科学与工程] X703[环境科学与工程—环境工程]

 

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