Post-crosslinking towards stimuli-responsive sodium alginate beads for the removal of dye and heavy metals

Carbohydrate Polymers
Ting LuChang-Sheng Zhao

Abstract

Post-crosslinking as a new strategy to prepare sodium alginate (SA) beads with controllable swelling behavior, pH sensitivity and adsorption capacity was developed by using the solution of glutaraldehyde (GA), acetic acid and hydrochloric acid as the coagulating agent, for which could be used to fabricate polysaccharide beads in a large scale. Fourier transform infrared spectroscopy and thermogravimetric analysis convinced the successful cross-linking of SA by GA. The macro-porous structures of the beads were observed by scanning electron microscopy. Both acetic acid and hydrochloric acid had great effects on the swelling behavior and pH sensitivity of the SA beads. The SA beads could adsorb cationic dye (methylene blue) as high as 572mg/g and other metal ions (Cu(2+), Ag(+) and Fe(3+)). The adsorption processes fitted well with the pseudo-second-order kinetic model and the Freundlich isotherm. The large-scale production of SA beads with tunable properties opens a new route to industrially utilize polysaccharide beads in wastewater treatments, intelligent separation and so on.

References

Aug 1, 2008·Biomacromolecules·Ariel W ChanRonald J Neufeld
Feb 7, 2009·Biomacromolecules·Ariel W ChanRonald J Neufeld
Mar 7, 2009·Journal of Environmental Management·V K Gupta, Suhas
Jul 20, 2011·Journal of Colloid and Interface Science·Agnès BéeVincent Dupuis
Nov 1, 2011·Colloids and Surfaces. B, Biointerfaces·Tonghao LiuDehai Wu
Jan 28, 2012·Biomaterials·Siddhesh N Pawar, Kevin J Edgar
Nov 19, 2013·Journal of Hazardous Materials·Chong Sage ChengChangsheng Zhao
Aug 3, 2014·Journal of Colloid and Interface Science·Layaly ObeidAgnès Bée
Jan 27, 2015·Journal of Colloid and Interface Science·Jiang GongXuecheng Chen
Feb 11, 2015·Journal of Colloid and Interface Science·G L DottoE C Lima

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Citations

Jun 18, 2016·Carbohydrate Polymers·Weifeng ZhaoChangsheng Zhao
Jul 19, 2016·Journal of Hazardous Materials·Chuanxiong NieChangsheng Zhao
Oct 26, 2016·Journal of Hazardous Materials·Man ZhangChangsheng Zhao
May 15, 2020·Environmental Science and Pollution Research International·Seyedeh-Arefeh Safavi-MirmahallehHossein Roghani-Mamaqani
Jul 20, 2019·Environmental Science and Pollution Research International·Lili WangMinghua Wu
Feb 7, 2019·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Shuting GaoChaobo Huang
Jan 8, 2021·Soft Matter·Laura K Rivera-TarazonaTaylor H Ware
Nov 17, 2020·International Journal of Biological Macromolecules·Mahmoud H Abu ElellaKuk Ro Yoon
Feb 23, 2021·International Journal of Biological Macromolecules·Chuhuan HuYapeng Fang
Aug 12, 2020·Current Drug Delivery·Dhalendra KothaleDharmendra Jain
Jun 23, 2021·Chemosphere·Samaneh BandehaliAdeyemi S Adeleye

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