Open Access

ARTICLE

One-Step Synthesis of Magnetic Zeolite from Zinc Slag and Circulating Fluidized Bed Fly Ash for Degradation of Dye Wastewater

by Zhichao Han, Yaojun Zhang, Panyang He

College of Materials Science and Engineering, Xi’an University of Architecture and Technology, Xi’an, 710055, China

* Corresponding Author: Yaojun Zhang. Email:

(This article belongs to the Special Issue: Renewable materials for sustainable development)

Journal of Renewable Materials 2020, 8(4), 405-416. https://doi.org/10.32604/jrm.2020.09351

Received 05 December 2019; Accepted 13 February 2020; Issue published 24 April 2020

Abstract

In this study, a magnetic P zeolite was directly synthesized by utilization of industrial solid wastes of zinc slag (ZS) and circulating fluidized bed fly ash (CFBFA) via one-step hydrothermal method. The effects of different CFBFA/ZS ratios and hydrothermal times on the as-synthesized zeolite were investigated. The X-ray diffraction (XRD) and vibrating sample magnetometer (VSM) results indicated that the magnetic P zeolite possessed well-defined crystals and superparamagnetism. The as-prepared zeolite was employed as a Fenton-like solid catalyst for degradation of direct green B dye wastewater. It was discovered that the magnetic P zeolite took the advantage of rapid separation and efficient recovery under the external magnets in a solid-liquid reaction. The effects of the solution pH, the catalyst dosage, and the H₂O₂ concentration on the degradation rate of direct green B dye wastewater were studied systematically. The results showed that the highest degradation of 96.3% was obtained and the magnetic P zeolite showed excellent stability after four cycles. Therefore, the magnetic P zeolite derived from industrial solid wastes had a potential application in wastewater treatment.

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