Details

Autor(en) / Beteiligte

• Yan, Gong
• Oliver, Su Philipp

Titel

Adsorption of Hg(II) from aqueous solution using functionalized hydrogel loaded with hydrous manganese dioxide particles

Ist Teil von

• Water science and technology, 2017-08, Vol.76 (3-4), p.747-753

Ort / Verlag

England

Erscheinungsjahr

2017

Quelle

MEDLINE

Beschreibungen/Notizen

• In this paper, a high performance adsorbent (hydrous manganese oxides onto acylamino and hydroxyl functionalized hydrogel) containing manganese oxide was prepared by the cross-linking polymer; the novel composite adsorbent has an excellent adsorption for Hg(II) removal. The adsorbent was characterized by scanning electron microscopy and Fourier transform infrared analysis, the hydrogel adsorbent had a typical three-dimensional network structure, and manganese oxides particles were dispersed into the channel and pores structure. The adsorption of Hg in water was tested by using the adsorbent. The results show that the adsorption isotherms were fitted well with Langmuir model, and the maximum Hg adsorption capacity was 0.654 mmol g (131.2 mg g ). The adsorption kinetics followed a pseudo-second-order equation, and the adsorption equilibrium can be reached in the first 120 min. The optimum pH of adsorption was determined to be 8.0. The desorption efficiency of 94% can be reached using 0.7 mol L HCl as the regeneration agent. The results suggest that this material can be a promising adsorbent for Hg removal in several industrial processes.