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Guest editorial separation processes.

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Asia-Pac. J. Chem. Eng. 2008; 3: 355–356
Published online in Wiley InterScience
( DOI:10.1002/apj.154
Guest editorial: separation processes
Prof. Mohamed Kheireddine Aroua obtained his PhD in Analytical Chemistry in 1992 from the University of
Nancy I, France. He also holds a Degree in Chemical Engineering and a Master’s in Material Sciences and
Engineering. He joined the Department of Chemical Engineering, University of Malaya in 1993 as a lecturer,
and was promoted to Associate Professor in 2002, then to Professor in 2007. His main research interests are
in fundamental and applied separation processes such as CO2 capture using alkanolamine and ionic liquids
technologies, membrane processes, adsorption, and electrochemical processes using activated carbons, and
development of superadsorbent materials produced from palm shell. He has published more than 40 papers
in refereed journals, and more than 70 publications in local, regional, and international conferences.
Dr Mohamed Azlan Hussain joined the Department of Chemical Engineering, University of Malaya in 1987
as a lecturer, and is currently holding the post of Professor in the Department. He obtained his PhD in
Chemical Engineering from Imperial College, London in 1996. His main research interests are modeling,
process controls, nonlinear control-systems analysis, and application of artificial intelligence techniques in
chemical engineering systems. More than 250 papers in journals and conferences have been published by him
in these areas.
Separation processes are those processes in which valued substances are separated from undesired substances
based on the physical, physicochemical, electrical, and
biochemical properties of the materials involved. Separations are an essential step in material processing
plants in the chemical, petrochemical, pharmaceutical, biomedical, semiconductor, and food and beverage industries. They are also important for effective
environmental control including prevention, abatement,
remediation, and reuse of process residues, by-products,
and waste materials. It is estimated that the cost of
separation can represent as much as 80% of total
processing costs, especially for commodity chemicals.
A wide range of separation processes exists, ranging
from conventional technologies such as distillation and
extraction to the more exciting applications of membranes, supercritical extraction, and bioseparation technologies. Effective separation technologies are critical
components of sustainable chemical-processing practices.
The papers of this special issue have been compiled to
demonstrate the wide range of application of separation
processes and discuss the current issues and advances
 2008 Curtin University of Technology and John Wiley & Sons, Ltd.
that have been made in various separation technologies.
A total of 10 papers presented in the separation
processes session of the Asian Pacific Confederation
of Chemical Engineering (APCChE) held in Kuala
Lumpur in August 2006 were initially invited for
this special edition. These papers were subjected to
a reviewing process and finally four of them were
accepted for this special edition. In order to complete
this special issue, we also selected two papers dealing with important separation technologies submitted
directly to the Journal. The papers cover a wide range
of topics showing some of the important applications of
separation processes such as bioseparation of organic
contaminants (by T.V.N. Padmesh, et al .), advanced
modeling of membrane processes for gas separation
(by S.S. Madaeni, et al .), recovery of valuable metals using conventional separation techniques namely,
acid leaching (by S. Sakultung, et al .), advanced separation techniques namely, supercritical carbon dioxide
(by Muhammad Faisal, et al .) and liquid membranes
(by S. Venkatesan, et al .), and finally a paper by Alizera Bahadori, et al ., demonstrates the importance of
separation optimization in upstream crude oil production.
It was our pleasure and privilege to serve as Guest
Editors for this second special issue, and we are grateful
to all authors for their contributions, and to all reviewers
for their valuable comments. Special thanks to Professor
Martyn Ray and his Assistant, Hong Mei Yao, for
their efforts in editing and improving the quality of the
papers. We are also grateful to Professor Moses O. Tade
 2008 Curtin University of Technology and John Wiley & Sons, Ltd.
Asia-Pacific Journal of Chemical Engineering
for his support for this special issue of the Asia-Pacific
Journal of Chemical Engineering.
Mohamed Kheireddine Aroua and
Mohamed Azlan Hussain
Department of Chemical Engineering, University of Malaya,
50 603 Kuala Lumpur, Malaysia.
Email: mk
Asia-Pac. J. Chem. Eng. 2008; 3: 355–356
DOI: 10.1002/apj
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