Preparation of magnetic porous ceramsite and its application in biological aerated filters

Bao, Teng, Chen, Tianhu, Liu, Haibo, Chen, Dong, Qing, Chengsong, & Frost, Ray L (2014) Preparation of magnetic porous ceramsite and its application in biological aerated filters. Journal of Water Process Engineering, 4, pp. 185-195.

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Abstract

Ceramsite plays a significant role as a biological aerated filter (BAF) in the treatment of wastewater. In this study, a mixture of goethite, sawdust and palygorskite clay was thermally treated to form magnetic porous ceramsite (MPC). An optimization experiment was conducted to measure the compressive strength of the MPC. X-ray diffraction (XRD), scanning electron microscopy (SEM), and polarizing microscopy (PM) characterized the pore structure of the MPC. The results show that a combination of goethite, sawdust and palygorskite clay with a mass ratio of 10:2:5 is suitable for the formation of MPC. The compressive strength of MPC conforms to the Chinese national industrial standard (CJ/T 299-2008) for wastewater treatment. The SEM and PM results also show that the uniform and interconnected pores in MPC were well suited for microbial growth. The MPC produced in this study can serve as a biomedium for advanced wastewater treatment.

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2 citations in Scopus
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ID Code: 88627
Item Type: Journal Article
Refereed: Yes
Keywords: Magnetic porous ceramsite (MPC), Goethite, Palygorskite clay, Biological aerated filter, (BAF), Biofilm
DOI: 10.1016/j.jwpe.2014.10.004
ISSN: 2214-7144
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 02 Nov 2015 02:26
Last Modified: 02 Nov 2015 02:26

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