Manufacture of microporous ceramic layer by suspension-sedimentation for
filtration applications
By:Laoui, T (Laoui, Tahar)[ 1 ]; Patel, F (Patel, Faheemuddin)[ 1 ]; Saheb, N (Saheb, Nouari)[ 1
]; Al-Aqeeli, N (Al-Aqeeli, Nasser)[ 1 ]
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL
OF ENGINEERING MANUFACTURE
Volume: 227
Issue: 7
Pages: 1032-1038
DOI: 10.1177/0954405413476862
Published: JUL 2013
View Journal Information
Abstract
Microporous layers of 0.3 mu m -alumina powder were deposited on the surface of porous
zirconia substrates (average pore size of about 1 mu m) using suspension-sedimentation
method. The characteristics of the deposited alumina microporous layer was evaluated
using different types of dispersants, namely, citric acid, sodium dodecyl sulfate and Triton
X-100. The effect of these dispersants on the stability and settling characteristics of
alumina suspension was evaluated by sedimentation tests. Scanning electron microscopy
analysis of the microporous layers (prior to sintering) revealed that sodium dodecyl sulfate
dispersant produced uniform layers with least agglomeration of alumina particles, whereas
citric acid showed more agglomeration of alumina particles and the use of Triton X-100
developed holes on the surface of alumina layer. The layers deposited using sodium
dodecyl sulfate dispersant were then sintered at 1400 degrees C in air. Scanning electron
microscopy observations revealed that a uniform porous alumina layer with average pore
size in the range of 0.5-1.0 mu m was produced with this method. The results of
sedimentation tests indicated that alumina powder suspension prepared with sodium
dodecyl sulfate dispersant yielded very good stability with lowest particle settling rate,
whereas citric acid exhibited the highest particle settling rate.
Keywords
Author Keywords:Ceramics; alumina; sedimentation; microporous; dispersant; sodium
dodecyl sulfate; citric acid; Triton X-100
KeyWords Plus:WATER
Author Information
Reprint Address: Laoui, T (reprint author)
King Fahd Univ Petr & Minerals, Dept Mech Engn, POB 1548, Dhahran 31261, Saudi
Arabia.
Organization-Enhanced Name(s)
King Fahd University of Petroleum & Minerals
Addresses:
[ 1 ] King Fahd Univ Petr & Minerals, Dept Mech Engn, Dhahran 31261, Saudi Arabia
Organization-Enhanced Name(s)
King Fahd University of Petroleum & Minerals
E-mail Addresses:tlaoui@kfupm.edu.sa
Author Identifiers:Author Identifiers:
Author
ResearcherID
ORCID Number
Laoui, Tahar
B-6787-2015
View profile at ResearcherID.com
Al-Aqeeli, Nasser
B-9964-2015
View profile at ResearcherID.com
http://orcid.org/0000-0003-4634-3028
Saheb, Nouari
C-4377-2015
View profile at ResearcherID.com
Document Information
Document Type:Article
Language:English
Accession Number: WOS:000326079900010
ISSN: 0954-4054
eISSN: 2041-2975