Reversible adsorption-desorption of zn (Ii) and pb (ii) in aqueous solution by thermosensitive-sulfobetaine gel

Eva Oktavia Ningrum*, Asep Bagus, Shuji Sakohara, Suprapto, Nurlaili Humaidah

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Citations (Scopus)

Abstract

Copolymer gel contains zwitterionic betaine N,N-dimethyl(acrylamidopropyl) ammonium propane sulfonate (DMAAPS) and thermosensitive N-isopropylacrylamide (NIPAM). Later, they were employed as reversible Zn (II) and Pb (II) adsorption-desorption in aqueous solution. The effects of temperature, monomer, cross-linker concentration, and type of ions on the swelling degree, and the adsorption amount of Zn (II) and Pb (II) ions onto the gel were investigated. In addition, the adsorption-desorption reversibility of ions was also examined. The adsorption ability and swelling degree of the gel were significantly influenced by temperature, monomer, and cross-linker concentrations. The amount of ions adsorbed onto the gel was inversely proportional to its temperature at various monomer concentrations. The swelling degree of the gel with NIPAM to DMAAPS molar ratio of 9:1 and 8:2 decreased with the increase of the temperature. However, for the gel prepared with NIPAM to DMAAPS molar ratio of 7:3, the swelling degree increased significantly as the temperature increased. It was obtained that the swelling degree of the gel in Zn(NO3)2 solution was higher than the swelling degree of the gel in Pb(NO3)2 solution. In contrast, the amount of ions adsorbed onto the gel in Zn(NO3)2 solution was slightly lower than in Pb(NO3)2 solution. Copolymer gel prepared with NIPAM to DMAAPS molar ratio of 8:2 exhibited the highest adsorption ability and swelling degree in Zn(NO3)2 and Pb(NO3)2 solutions. In addition, the copolymer gel of NIPAM-co-DMAAPS showed the reversible adsorption-desorption ability toward ions up to three cycles.

Original languageEnglish
Title of host publicationSeminar on Materials Science and Technology
EditorsLukman Noerochim
PublisherTrans Tech Publications Ltd
Pages221-227
Number of pages7
ISBN (Print)9783035714340
DOIs
Publication statusPublished - 2019
Event4th International Seminar on Science and Technology, ISST 2018 - Surabaya, Indonesia
Duration: 9 Aug 20189 Aug 2018

Publication series

NameMaterials Science Forum
Volume964 MSF
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference4th International Seminar on Science and Technology, ISST 2018
Country/TerritoryIndonesia
CitySurabaya
Period9/08/189/08/18

Keywords

  • Adsorption amount
  • Reversible adsorption-desorption
  • Zwitterionic betaine

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