期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 132, 期 -, 页码 478-486出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2019.03.222
关键词
Lignin; Nanoparticle; Adsorption
资金
- National Key Research and Development Program of China [2017YFB0307903]
- National Natural Science Foundation of China [21706193]
- Young Elite Scientists Sponsorship Program by Tianjin [TJSQNTJ-2017-19]
- Canada Research Chairs program of the Government of Canada
We report an ingenious technique to prepare magnetic alkaline lignin-dopamine nanoparticles (AL-DA/Fe3O4 NPs). Alkaline lignin, a kind of abundant waste from agriculture, pulping and bio-energy industry, was functionalized by the conjugation with DA molecules and nano-precipitation method. Benefiting from the three-dimensional network of lignin and mussel-inspired DA molecules, chromium(III) can be effectively removed by physisorption and chemisorption. The maximum Cr(III) adsorption capacity of AL-DA/Fe3O4 NPs was found to be 44.56 mg/g, which was among the highest of previously reported biomass-based Cr(III) adsorbents. Moreover, sensitive magnetic responsiveness (24.6 emu/g) of AL-DA/Fe3O4 NPs can be more helpful in recycling (over 90% recycled within 2 min) and multiple reusing. The preparation of this low-cost, high adsorptive capacity and good ecofriendly lignin-based nano-adsorbent is expected to become a sustainable technology to simultaneously achieve the wastewater reutilization from pulping and bio-energy industry and purification of other modern industries. (C) 2019 Elsevier B.V. All rights reserved.
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