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Siew-Teng Ong   Dr.  University Lecturer 
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Siew-Teng Ong published an article in December 2016.
Top co-authors
Yasodha Sivasothy

24 shared publications

School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Pulau Pinang, Malaysia

Pei-Sin Keng

9 shared publications

Weng-Nam Lee

2 shared publications

Department of Science, Faculty of Engineering and Science, Universiti Tunku Abdul Rahman Jalan Genting Kelang, Setapak 53300 Kuala Lumpur, Malaysia

Publication Record
Distribution of Articles published per year 
(2009 - 2016)
Total number of journals
published in
Publications See all
BOOK-CHAPTER 1 Read 0 Citations Chapter 5 Removal of Heavy Metals by Low-Cost Adsorption Materials Siew-Teng Ong, Sie-Tiong Ha, Pei-Sin Keng, Siew-Ling Lee, Ji... Published: 01 December 2016
Advances in Industrial and Hazardous Wastes Treatment, doi: 10.1201/9781315374536-6
DOI See at publisher website
Article 1 Read 0 Citations Experimental Design Approach for Methylene Blue Dye Removal in Aqueous Environment by Nitrilotriacetic Modified Banana P... Shi-Ling Lee, Shu-Wei Liew, Siew-Teng Ong Published: 01 January 2016
Acta Chimica Slovenica,
PubMed View at PubMed
ABS Show/hide abstract
Native banana pith (NBP) was modified by using nitrilotriacetic acid to increase its efficiency and adsorption capacity for methylene blue (MB) dye. The effect of various parameters such as pH, contact time and initial dye concentration, sorption isotherm and adsorbent dosage were studied. The maximum adsorption capacity of the NBP and NTA-BP is 100 and 142.86 mg/g, respectively. The IR spectrum of NBP and NTA-BP showed the presence of both carboxyl and hydroxyl groups. From the SEM micrographs, the surface morphology of NTA-BP before adsorption appeared to be smoother as compared to that after adsorption process. The pH(pzc) of NBP is 5.6 whereas for NTA-BP is 7.6. The experimental data fitted well into Langmuir isotherm with R(2) of 0.992. Plackett-Burman design was applied to identify the significant factors in affecting the uptake whereas the interaction between the factors and their optimum levels for the maximum percentage uptake of MB were determined using response surface methodology (RSM). Based on the results, the optimum condition for adsorption of MB was by using 0.06 g of NTA-BP in dye solution at pH 6 with 120 minutes contact time. The maximum adsorption of MB by NTA-BP achieved 99.42% under the optimum condition.
Article 1 Read 0 Citations Photodegradation of Malachite Green by Immobilization of Titanium Dioxide on Glass Plates Pei-Wen Lee, Siew-Teng Ong, Yung-Tse Hung, Siew-Ling Lee Published: 01 January 2013
Asian Journal of Chemistry, doi: 10.14233/ajchem.2013.12867
DOI See at publisher website
Article 1 Read 22 Citations Dye Waste Treatment Siew-Teng Ong, Weng-Nam Lee, Pei-Sin Keng, Sie-Tiong Ha, Yun... Published: 16 February 2011
Water, doi: 10.3390/w3010157
DOI See at publisher website
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Dye wastes represent one of the most problematic groups of pollutants because they can be easily identified by the human eye and are not easily biodegradable. This literature review paper highlights and provides an overview of dye waste treatments performed over the three years period from 2008–2010. Noteworthy processes for the treatment of dye waste include biological treatment, catalytic oxidation, filtration, sorption process and combination treatments.
Article 0 Reads 0 Citations 3-Hydroxy-4-{[(4-methoxyphenyl)imino]methyl}phenyl Octadecanoate Jun-Kit Beh, Kok-Leei Foo, Teck-Ming Koh, Sie-Tiong Ha, Siew... Published: 08 June 2010
Molbank, doi: 10.3390/m686
DOI See at publisher website
ABS Show/hide abstract
A new Schiff base ester, 3-hydroxy-4-{[(4-methoxyphenyl)imino]methyl}phenyl octadecanoate, was synthesized and its IR, 1H NMR, 13C NMR and MS spectroscopic data are presented.
Article 1 Read 0 Citations 3-Hydroxy-4-{[(4-ethylphenyl)imino]methyl}phenyl Octadecanoate Jun-Kit Beh, Yip-Foo Win, Sie-Tiong Ha, Siew-Teng Ong Published: 30 April 2010
Molbank, doi: 10.3390/m681
DOI See at publisher website
ABS Show/hide abstract
A new Schiff base ester, 3-hydroxy-4-{[(4-ethylphenyl)imino]methyl}phenyl octadecanoate, was synthesized and its IR, 1H NMR, 13C NMR and MS spectroscopic data are presented.