Preparation of the sodium alginate-g-(polyacrylic acid-co-allyltrimethylammonium chloride) polyampholytic superabsorbent polymer and its dye adsorption property

Shuxian Tang, Ying Zhao, Haitao Wang, Yuqiao Wang, Hexiang Zhu, Yu Chen*, Shusen Chen, Shaohua Jin, Ziming Yang, Puwang Li, Sidong Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

A polyampholytic superabsorbent polymer (PASAP), sodium alginate-g-(polyacrylic acid-co-allyltrimethylammonium chloride) (SA-g-(PAA-co-PTM)), was prepared by free-radical graft copolymerization and characterized. The polymer exhibited pH-dependent swelling behaviors with extremely high swelling ratios, and was saline tolerant. The dye adsorption properties of SA-g-(PAA-co-PTM) were investigated using methylene blue (MB) as a cationic dye model. It was found that its dye adsorption capacity was significantly affected by the TM content in PASAP and pH of dye solution. The dye adsorption kinetics and isotherm obey the pseudo-second-order kinetic model and the Langmuir isotherm model, respectively, and the adsorption process is chemisorption in nature. In addition, SA-g-(PAA-co-PTM) exhibited high MB adsorption capacities in a wide pH range and reusability in at least five adsorption-desorption cycles, indicating its great application potentials as the adsorbent for dye removals from effluents.

Original languageEnglish
Article number476
JournalMarine Drugs
Volume16
Issue number12
DOIs
Publication statusPublished - 29 Nov 2018

Keywords

  • Adsorption
  • Methylene blue
  • PH-dependent
  • Polyampholytic superabsorbent polymer

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