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Recycling of Mud Derived from Backwash Wastewater Coagulation as Magnetic Sodalite Sphere for Zn2+Adsorption

Suiyi Zhu1, Manhong Ji1, Hongbin Yu1,*, Zhan Qu1, Jiakuan Yang2, Mingxin Huo1, Yi Wang1
1 School of Environment, Northeast Normal University, Changchun, 130024, China
2 School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
* Corresponding Author: Hongbin Yu. Email:
(This article belongs to this Special Issue: Current Advances in Green Nanomaterials Applications)

Journal of Renewable Materials 2021, 9(9), 1599-1607. https://doi.org/10.32604/jrm.2021.015189

Received 29 November 2020; Accepted 29 January 2021; Issue published 23 April 2021

Abstract

Herein, we reported a method to prepare magnetic sodalite sphere by using the mud from backwash wastewater after polyaluminum chloride (PAC) coagulation. The results showed that approximately 100% of Fe in the wastewater was precipitated as flocculent iron mud (FM) by adding PAC. FM was converted to spherical magnetic sodalite (FMP) with a diameter of 3 μm via a facile alkali hydrothermal method without adding Al/Si resources or reductant. The product FMP had the saturated magnetization of 10.9 emu g−1 and high Zn2+ adsorption capacity of 50.6 mg g−1. Without coagulation with PAC, the removal rate of Fe from the wastewater was only 92.7%, and the precipitated mud (RM) was converted to irregular particles (RMP), which had weak magnetic response and low capacity of Zn2+ adsorption comparing with FMP. With the method, the Fe in backwash wastewater was effectively recycled, and the generated sludge was converted to well-formed sodalite sphere without generating any secondary waste.


Graphical Abstract

Recycling of Mud Derived from Backwash Wastewater Coagulation as Magnetic Sodalite Sphere for Zn<sup>2+</sup>Adsorption

Keywords

Backwash wastewater; coagulation; magnetic sodalite; Mössbauer; adsorption

Cite This Article

Zhu, S., Ji, M., Yu, H., Qu, Z., Yang, J. et al. (2021). Recycling of Mud Derived from Backwash Wastewater Coagulation as Magnetic Sodalite Sphere for Zn2+Adsorption. Journal of Renewable Materials, 9(9), 1599–1607.



This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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