Preparation of Zeolite from Waterworks Sludge for Ammonium Ion Removal in Wastewater

Chun Xia Zhao; Chun Hui Zhang; Tan Meng; Shan Shan Han; Jia Yu Jiang; Qing Xin Yin; Mei Tong Guo; Bo Quan Shao; Gui Juan Rong

doi:10.4028/www.scientific.net/AMR.1095.355

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Preparation of Sodium Paeonolsilate Intercalated into Layered Double Hydroxides and its Release Properties
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Preparation of Zeolite from Waterworks Sludge for Ammonium Ion Removal in Wastewater
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Preparation of Zeolite from Waterworks Sludge for Ammonium Ion Removal in Wastewater

Abstract:

An appropriate disposal technology should be developed for a mass of waterworks sludge (WWS) as the solid waste. While, it can be used to produce zeolite, containing a lot of aluminum and silicate elements. In addition, the synthetic zeolite was widely used because of smaller particle size and higher purity than clinoptilolite. Therefore, the WWS and sodium hydroxide were adopted as raw material; the synthetic zeolite was used as seed crystals to obtain WWS zeolite by induce crystallization, under normal pressure at 125 °C. The adsorption and exchange capacity of WWS zeolite was 18.3 mg/g when the initial concentration of ammonium ion was 100 mg/L in wastewater.