Browsing School of Environmental Engineering (Articles) by Issue Date
Now showing items 1-20 of 129
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Risk assessment study for storage explosive
(Science Publications, 2006)In Malaysia, there has been rapidly increasing usage in amount of explosives due to widely expansion in quarrying and mining industries. The explosives are usually stored in the storage where the safety precaution had given ... -
Effects of calcination temperature and zinc-source concentration on chemical-solution synthesized ZnO nanorods
(Electrochemical Society, 2006)In this paper, ZnO nanoparticles, in particular nanorods, were prepared by a time-saving and a cost effective chemical-solution process. Zinc acetate dehydrates, 2-propanol and diethanolamine were used as the source to ... -
Estimation of missing values for air pollution data using Interpolation technique
(Universiti Malaysia Perlis, 2006)Air pollution data such as PM10, sulphur dioxide, ozone and carbon monoxide are usually obtained using automated machines located at different sites. These are usually due to mechanical failure, routine maintenance, changes ... -
Chemical & Mineralogical Properties of Fly Ash
(Malaysian Nuclear Society, 2007)Fly ash is the finely divided mineral residue resulting from the combustion of coal in electric generating plants. Fly ash consists of inorganic, incombustible matter present in the coal that has been fused during combustion ... -
Comparative Study of Clinker’s Transformation at Different Temperature Zone During Cement Production
(Science Publications, 2007)Chemical composition analysis using x-ray fluorescence is one of the important quality analysis for examining of cement and widely used in cement industries for a long time as a tool to estimate phase composition. X-ray ... -
Changes in biologically-active ultraviolet radiation reaching the Earth's surface
(The Royal Society of Chemistry & Owner Societies, 2007)The Montreal Protocol is working. Concentrations of major ozone-depleting substances in the atmosphere are now decreasing, and the decline in total column amounts seen in the 1980s and 1990s at mid-latitudes has not ... -
Comparative Characterization of Clinker’s Microstructure at Different Temperature Zone during Cement Production
(Science Publications, 2007)Temperature is an important parameter for transformation of minerals in clinker during cement productions. It influences the formation of alite from belite during calcinations and clinkering processes. The result of ... -
Kinetics of adsorption of Cu(II) and Cd(II) from aqueous solution on rice husk and modified rice husk
(University of Vigo, 2007-02)The present study is aimed to investigate the adsorption behavior of Cu(II) and Cd(II) ions onto rice husk and modified rice husk. The adsorption of the heavy metal ions over both the adsorbents was found to follow Langmuir ... -
Treatment of methylene blue-containing wastewater using microorganisms supported on granular activated carbon under packed column operation
(Springer-Verlag, 2007-05)We studied the feasibility of using biological granular activated carbon-packed column in treating methylene blue-containing wastewater. The granular activated carbon with immobilized microbes was packed into a column and ... -
Removal of chromium (VI) from aqueous solution using treated oil palm fibre
(Elsevier B.V, 2007-07-17)This study proposed an oil palm by-product as a low-cost adsorbent for the removal of hexavalent chromium [Cr (VI)] from aqueous solution. Adsorption of Cr (VI) by sulphuric acid and heat-treated oil palm fibre was conducted ... -
Climate augmentation of erythemal UV-B radiation dose damage in the tropics and global change
(Indian Academy of Sciences, 2007-12-10)Skin cancer (UV carcinogenesis) causing erythemal solar ultraviolet-B (UV-B) radiation dosages received at tropical latitudes are about five times higher compared to mid-latitudes. The tropical environment also experiences ... -
Estimation of missing values in air pollution data using single imputation techniques
(Science Society of Thailand, 2008)Air pollution data obtained using automated machines often contain missing values which can cause bias due to systematic differences between observed and unobserved data. We used interpolation and mean imputation techniques ... -
Granular activated carbon-biofilm configured sequencing batch reactor treatment of C.I. Acid Orange 7
(Elsevier Ltd, 2008)The aim of this study is to investigate the mineralization of C.I. Acid Orange 7 (AO7) by biological process in oxygen limited condition under GAC-biofilm configured sequencing batch reactor (SBCR) operation. The granular ... -
Combination of adsorption and biodegradation processes for textile effluent treatment using a granular activated carbon-bioflm confgured packed column system
(The Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, 2008)The objective of this study was to investigate the feasibility of using a granular activated carbon-biofilm configured packed column system in the decolorization of azo dye Acid Orange 7-containing wastewater. The Acid ... -
A new approach for predicting solar radiation in tropical environment using satellite images - Case study of Malaysia
(World Scientific and Engineering Academy and Society (WSEAS) Press, 2008)Satellite images have been indentified as an alternative and accurate method for predicting average annual daily solar radiation of a specific location. These images can be use to predict the performance and sizing of ... -
Anaerobic treatment of olive mill wastewater and piggery effluents fermented with Candida tropicalis
(Elsevier B.V., 2008-09-24)Olive mill wastewater (OMW) contains high concentrations of phenolic compounds that are inhibitory to many microorganisms making it difficult to treat biologically prior to discharge in waterways. The total mono-cyclic ... -
Anaerobic treatment of olive mill wastewater and piggery effluents fermented with Candida tropicalis
(Elsevier B.V., 2009-05)Olive mill wastewater (OMW) contains high concentrations of phenolic compounds that are inhibitory to many microorganisms making it difficult to treat biologically prior to discharge in waterways. The total mono-cyclic ... -
Biological kinetics evaluation of anaerobic stabilization pond treatment of palm oil mill effluent
(Elsevier Ltd., 2009-11-21)Biological kinetic (bio-kinetic) study of the anaerobic stabilization pond treatment of palm oil mill effluent (POME) was carried out in a laboratory anaerobic bench scale reactor (ABSR). The reactor was operated at different ... -
Removal of colour from landfill by solar photocatalytic
(Asian Network for Scientific Information, 2010)This study was conducted to examine the percentage of colour removal using coagulation as pretreatment, followed by the effects of ZnO, pH, stirring time and solar photocatalytic as final treatment. The duration of ... -
A novel pretreatment method of lignocellulosic material as adsorbent and kinetic study of dye waste adsorption
(Springer Science+Business Media B.V., 2010)Sulphuric acid-modified bagasse has been used as low-cost adsorbent for the removal of methylene blue (MB) dye from aqueous solution. In order to remove organic compounds that contribute to chemical oxygen demand (COD), ...