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

被引：22

作者：

Bao, Teng ^{[1
,2
]}

Chen, Tianhu ^{[1
]}

Liu, Haibo ^{[1
,2
]}

Chen, Dong ^{[1
,2
]}

Qing, Chengsong ^{[1
]}

Frost, Ray L. ^{[2
]}

机构：

[1] Hefei Univ Technol, Sch Resource & Environm Engn, Lab Nanominerals & Environm Mat, Hefei, Anhui, Peoples R China

[2] Queensland Univ Technol, Sci & Engn Fac, Sch Chem Phys & Mech Engn, Brisbane, Qld, Australia

来源：

JOURNAL OF WATER PROCESS ENGINEERING | 2014年 / 4卷

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

Magnetic porous ceramsite (MPC); Goethite; Palygorskite clay; Biological aerated filter (BAF); Biofilm;

D O I：

10.1016/j.jwpe.2014.10.004

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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-raydiffraction (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/T299-2008) 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. (c) 2014 Elsevier Ltd. All rights reserved.

引用

页码：185 / 195

页数：11

共 45 条

[1] Chen Y., 2008, CHEM IND ENG PROD, V10, P1462
[2] Phosphate adsorption properties of magnetite-based nanoparticles
Daou, T. J.
Begin-Colin, S.
Greneche, J. M.
Thomas, F.
Derory, A.
Bernhardt, P.
Legare, P.
Pourroy, G.
[J]. CHEMISTRY OF MATERIALS, 2007, 19 (18) : 4494 - 4505
[3] Frost RL, 2003, J THERM ANAL CALORIM, V71, P783, DOI 10.1023/A:1023365923961
[4] Formation and destruction of chlorinated pollutants during sewage sludge incineration
Fullana, A
Conesa, JA
Font, R
Sidhu, S
[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2004, 38 (10) : 2953 - 2958
[5] Removal of phosphate from aqueous solution by thermally treated natural palygorskite
Gan, Fangqun
Zhou, Jianmin
Wang, Huoyan
Du, Changwen
Chen, Xiaoqin
[J]. WATER RESEARCH, 2009, 43 (11) : 2907 - 2915
[6] MAGNETIC-FIELDS AFTER TRANSLATION IN ESCHERICHIA-COLI
GOODMAN, EM
GREENEBAUM, B
MARRON, NT
[J]. BIOELECTROMAGNETICS, 1994, 15 (01) : 77 - 83
[7] In situ study of the goethite-hematite phase transformation by real time synchrotron powder diffraction
Gualtieri, AF
Venturelli, P
[J]. AMERICAN MINERALOGIST, 1999, 84 (5-6) : 895 - 904
[8] Structure and properties of Fe4 with different coverage by C and CO
Gutsev, GL
Mochena, MA
Bauschlicher, CW
[J]. JOURNAL OF PHYSICAL CHEMISTRY A, 2004, 108 (51) : 11409 - 11418
[9] Nitrification and denitrification in partially aerated biological aerated filter (BAF) with dual size sand media
Ha, J. H.
Ong, S. K.
[J]. WATER SCIENCE AND TECHNOLOGY, 2007, 55 (1-2) : 9 - 17
[10] The characteristics and application of sludge-fly ash ceramic particles (SFCP) as novel filter media
Han, Shuxin
Yue, Qinyan
Yue, Min
Gao, Baoyu
Li, Qian
Yu, Hui
Zhao, Yaqin
Qi, Yuanfeng
[J]. JOURNAL OF HAZARDOUS MATERIALS, 2009, 171 (1-3) : 809 - 814

← 1 2 3 4 5 →