Equilibrium and kinetic studies for silver removal from aqueous solution by hybrid hydrogels

Thu Hong Tran, Hirotaka Okabe, Yoshiki Hidaka, Kazuhiro Hara

研究成果: ジャーナルへの寄稿学術誌査読

34 被引用数 (Scopus)


Hybrid hydrogels were prepared by blending Carboxymethyl chitosan (CMCts), Carboxymethyl cellulose (CMC) with Sodium sulfonate styrene (SSS) by 60-kGy gamma rays. The prepared hydrogels were utilized as silver-ion (Ag) sorbent under non- and competitive cases. Batch adsorption experiments were conducted in functional conditions including contact time, ratios of (CMC:CMCts) and SSS, pH value, temperature and adsorbent weight. Equilibrium contact time of 10 h. was obtained by the adsorption material. The optimal 4:2 ratio of (CMC:CMCts):SSS showed the Ag highest adsorption efficiency. The maximum percentage of Ag+ removal was achieved at the pH 5. The temperature effect on the adsorption ability of hybrid hydrogel indicated the Ag adsorption process was endothermic and spontaneous. The Langmuir isotherm model fitted Ag adsorption data well, assuming a monolayer adsorption with predicted maximum adsorption capacity of 451.74 × 10−3 mg. g–1. From the kinetic data, the process of Ag adsorption had higher agreement with the pseudo-2nd order model, predicting the amount of Ag+ uptake at different contact time intervals and at equilibrium.

ジャーナルJournal of Hazardous Materials
出版ステータス出版済み - 3月 5 2019

!!!All Science Journal Classification (ASJC) codes

  • 環境工学
  • 環境化学
  • 廃棄物管理と処理
  • 汚染
  • 健康、毒物学および変異誘発


「Equilibrium and kinetic studies for silver removal from aqueous solution by hybrid hydrogels」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。