Removal of wastewater phenolic compounds with triethylenetetramine functionalized polystyrene resin | Zendy

Qiaoqiao Teng | Zendy; Shufeng Ma | Zendy; Mengyi Ni | Zendy; Jiang Liu | Zendy; Jinlei Yang | Zendy; Dianhong Zhang | Zendy; Qi Meng | Zendy

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Removal of wastewater phenolic compounds with triethylenetetramine functionalized polystyrene resin

Author(s) -

Qiaoqiao Teng,

Shufeng Ma,

Mengyi Ni,

Jiang Liu,

Jinlei Yang,

Dianhong Zhang,

Qi Meng

Publication year - 2020

Publication title -

water science and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.406

H-Index - 137

eISSN - 1996-9732

pISSN - 0273-1223

DOI - 10.2166/wst.2020.345

Subject(s) - triethylenetetramine , adsorption , polystyrene , chemistry , phenol , diffusion , polymer chemistry , nuclear chemistry , amine gas treating , kinetics , freundlich equation , organic chemistry , chemical engineering , polymer , physics , quantum mechanics , thermodynamics , engineering

A polyamine functionalized polystyrene resin (PSATA) was prepared via condensation reaction of acetylated polystyrene resin with triethylenetetramine, which, upon NaBH4 reduction, produced PSATAR. In comparison with the PSATA, the PSATAR with more flexible amine groups shows improved structural properties, and the equilibrium adsorption capacities of phenol, 2-nitrophenol (ONP) and 2,4-dinitrophenol (DNP) in wastewater were up to 1.073, 1.832 and 1.901 mmol/g, respectively. Their adsorption isotherms fit well with the Freundlich model, indicating a multilayer, heterogeneous adsorption nature. Kinetic studies indicated that the adsorption of phenolic compounds conforms to the pseudo-second-order kinetics with the adsorption rate controlled by film diffusion for ONP and DNP, and intra-particle diffusion in the later stage for phenol.

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