Shapeable amino-functionalized sodium alginate aerogel for high-performance adsorption of Cr(VI) and Cd(II): Experimental and theoretical investigations
Herein, an elastic polyethyleneimine/sodium alginate aerogel was designed by a one-step freeze-drying method. The 3D honeycomb-like structure endowed it excellent compressibility and plentiful exposed adsorption sites to accelerate Cr(VI) and Cd(II) adsorption. The adsorption processes matched the pseudo-second-order and Langmuir models, and the saturated adsorption capacity for Cr(VI) and Cd(II) was 678.67 and 464.23 mg/g, respectively. The obtained aerogel still expressed superior removal performance for Cr(VI) and Cd(II) even in the coexistent of multiple interfering factors and maintained stable adsorption capacity at least after 5 cycles. Importantly, the elastic cylindrical aerogel (∼0.59 g) could achieve dynamic filtration of industrial wastewater containing Cr(VI) and Cd(II) in fix-bed column system with corresponding effective treatment volume of 4.47 and 3.25 L, respectively. The reasonable mechanisms for the adsorption behaviors of heavy metals on the as-prepared aerogel was investigated via FTIR, XPS and Density functional theory (DFT), which could be attributed to the surface electrostatic adsorption, chelation and reduction effects. Eventually, the ecological assessment verified that eco-friendly SA/PEI aerogel had a powerful auxiliary effect on the anti-fouling growth of rice. Overall, such novel biomass aerogel adsorbent possessed great application potential and theoretical guiding significance for the purification of heavy metal wastewater.
National Key R&D Program of China[2019YFD1100300] ; National Natural Science Foundation of China ; Heilongjiang Natural Science Foundation[YQ2021E029] ; Open Project of State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology[QA202129]
|WOS Research Area|
Engineering, Environmental ; Engineering, Chemical
|WOS Accession No|
|EI Accession Number|
Aerogels ; Cadmium compounds ; Chemicals removal (water treatment) ; Chromium compounds ; Density functional theory ; Heavy metals ; Industrial water treatment ; Metal ions ; Sodium ; Sodium alginate ; Wastewater treatment
|ESI Classification Code|
Water Treatment Techniques for Industrial Use:445.1.2 ; Industrial Wastes:452.3 ; Industrial Wastes Treatment and Disposal:452.4 ; Metallurgy and Metallography:531 ; Metallurgy:531.1 ; Alkali Metals:549.1 ; Colloid Chemistry:801.3 ; Chemical Operations:802.3 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Probability Theory:922.1 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4
|ESI Research Field|
Cited Times [WOS]:20
|Document Type||Journal Article|
|Department||School of Environmental Science and Engineering|
1.State Key Laboratory of Urban Water Resource and Environment (SKLUWRE),School of Environment,Harbin Institute of Technology,Harbin,150090,China
2.State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control,School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,China
Wang，Qinyu,Li，Lipin,Tian，Yu,et al. Shapeable amino-functionalized sodium alginate aerogel for high-performance adsorption of Cr(VI) and Cd(II): Experimental and theoretical investigations[J]. CHEMICAL ENGINEERING JOURNAL,2022,446.
Wang，Qinyu.,Li，Lipin.,Tian，Yu.,Kong，Lingchao.,Cai，Guiyuan.,...&Wen，Boyang.(2022).Shapeable amino-functionalized sodium alginate aerogel for high-performance adsorption of Cr(VI) and Cd(II): Experimental and theoretical investigations.CHEMICAL ENGINEERING JOURNAL,446.
Wang，Qinyu,et al."Shapeable amino-functionalized sodium alginate aerogel for high-performance adsorption of Cr(VI) and Cd(II): Experimental and theoretical investigations".CHEMICAL ENGINEERING JOURNAL 446(2022).
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