新型海藻酸钠/聚乙烯亚胺水凝胶吸附剂用于 Cu 和 Pb 离子的级联去除和利用。
Novel alginate/polyethyleneimine hydrogel adsorbent for cascaded removal and utilization of Cu and Pb ions.
机构信息
State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, Jiangsu Province, China.
State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China.
出版信息
J Environ Manage. 2019 Feb 15;232:829-841. doi: 10.1016/j.jenvman.2018.11.131. Epub 2018 Dec 6.
Heavy metal ion pollution leads to severe health risk to human beings. Herein, a natural and highly efficient sodium alginate (ALG)/polyethyleneimine (PEI) composite hydrogel was designed and fabricated for the removal of heavy metal ions from wastewater. The adsorption of heavy metal ions on the ALG based, 3D composite hydrogel were thoroughly investigated in this study. Furthermore, the in situ reduced metal nanoparticle-loaded ALG/PEI composite hydrogel provided us a sustainable utilization route of the heavy metal ion with a promising adsorption-catalysis ability. In general, this research will present an effective and practical paradigm for the cascaded treatment and recycling of heavy metal ions in wastewater.
重金属离子污染对人类健康造成严重威胁。在此，设计并制备了一种天然且高效的海藻酸钠（ALG）/聚乙烯亚胺（PEI）复合水凝胶，用于去除废水中的重金属离子。本研究深入研究了基于 ALG 的 3D 复合水凝胶对重金属离子的吸附。此外，负载金属纳米颗粒的原位还原 ALG/PEI 复合水凝胶为重金属离子的可持续利用提供了一种有前途的吸附-催化途径。总的来说，该研究为废水中重金属离子的级联处理和回收提供了一种有效且实用的范例。
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