Details

Autor(en) / Beteiligte

• Xie, Jie
• Wang, Zhe
• Wu, Deyi
• Zhang, Zhenjia
• Kong, Hainan

Titel

Synthesis of Zeolite/Aluminum Oxide Hydrate from Coal Fly Ash: A New Type of Adsorbent for Simultaneous Removal of Cationic and Anionic Pollutants

Ist Teil von

• Industrial & engineering chemistry research, 2013-10, Vol.52 (42), p.14890-14897

Ort / Verlag

American Chemical Society

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Since the first successful synthesis of zeolite from coal fly ash (ZFA) in 1985, the preparation and application of ZFA has been intensively investigated to recycle the solid waste. However, problems arising from the waste alkaline solution have rarely been addressed to date. This study initiated a novel method to synthesize ZFA/Al2O3 hybrid material by introducing a reaction step involving the neutralization of the waste alkaline solution with soluble Al salts into the traditional ZFA synthesis route. When compared with ZFA, ZFA/Al2O3 was found to have a significantly higher CEC. The increases of the BET surface area and phosphate-immobilization capacity were even more dramatic, with the former increasing by 2–4 times and the latter increasing by 2–3 times. The hybrid material had a significantly lower alkalinity than ZFA. The results also showed that the effluent from the production of the hybrid material could be much more environmentally friendly.