School of Environmental Engineering (Articles): Recent submissions
Now showing items 61-80 of 129
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Strength of concrete based cement using recycle ceramic waste as aggregate
(Trans Tech Publications, 2013)The main focus of this research is to study the strength of concrete with ceramic waste as coarse aggregate. The sources of ceramic waste are obtained from the industrial in Malaysia. Presently, in ceramics industries the ... -
Mechanical properties of polymer composites with sugarcane bagasse filler
(Trans Tech Publications, 2013)Natural fibers reinforced polymer composites have gained more interest because of their biodegradable, light weight, less expensive sources, easy processing, high specific modulus and also environmentally friendly appeal. ... -
Mechanical properties of ZTA composite using cold isostatic pressing and uniaxial pressing
(Trans Tech Publications, 2013)Alumina-zirconia composite is an engineering material with a great potential to be develop for application as high temperature resistance structural material. In this research, zirconia toughness alumina (ZTA) was produced ... -
Alteration in the microstructure of fly ash geopolymer upon exposure to elevated temperatures
(Trans Tech Publications, 2013)This paper represents the mechanical and microstructure changes in geopolymeric material synthesized by the alkali activation of locally source fly ash at high temperatures of 400, 600 and 800 °C. The high compressive ... -
A study on the synthesis of fly ash-based lightweight aggregate geopolymer concrete
(American Scientific Publishers All rights reserved., 2013-01)The experiments conducting for current investigation aimed to study the synthesis process for lightweight aggregate geopolymer concrete (LWAGC) and explore the significance and limitations of the activator content on the ... -
Comparison of geopolymer fly ash and ordinary Portland cement to the strength of concrete
(American Scientific Publishers, 2013-12)The aim of this study is to evaluate the effect of various fly ash: aggregate ratios by using fly ash (FA) based geopolymer compared to ordinary Portland cement (OPC) on the compressive strength of concrete. The different ... -
Effect of dolomite on pyrolysis of rice straw
(2013)A study of catalytic pyrolysis on rice straw was carried out in a fixed-bed reactor. The objectives were to determine the effect of dolomite catalyst on the distribution of product yield and bio-oil characterization. The ... -
Mechanical and microstructural evaluations of lightweight aggregate geopolymer concrete before and after exposed to elevated temperatures
(MDPI, Basel, Switzerland, 2013)This paper presents the mechanical and microstructural characteristics of a lightweight aggregate geopolymer concrete (LWAGC) synthesized by the alkali-activation of a fly ash source (FA) before and after being exposed to ... -
Characteristics of airborne Pm₂.₅ and Pm₂.₅-₁₀ in the urban environment of Kuala Lumpur
(Scientific.Net, 2012-12)Gravimetric and elemental analyses were conducted at a site in Kuala Lumpur from 2008 to 2010, representing the local air quality of urban and traffic. Eighteen elements were detected by ED-XRF and was further analysed for ... -
Effect of alkali concentration on mechanical properties of kaolin geopolymers
(Procema SA, 2012)Alkali concentration is the most significant factor in geopolymerization process that must be taken into consideration during the synthesis of kaolin geopolymers. The kaolin geopolymers were prepared by mixing kaolin and ... -
Production of bioflocculant by staphylococcus cohnii ssp. from Palm Oil Mill Effluent (POME)
(Springer Science+Business Media B.V., 2012-09)Staphylococcus cohnii ssp. was found to produce a bioflocculant with high flocculating activity for kaolin suspension. Using optimized culture conditions, a flocculating activity of 70.3 % at a bioflocculation concentration ... -
Strength and microstructural properties of mechanically-activated kaolin geopolymers
(Trans Tech Publications, 2012-12)Kaolin geopolymers exhibit low strength properties due to its plate-like nature which contribute to smaller surface area for geopolymerization reactions. Layered kaolin structure only allows very little, if any, substitution ... -
Photocatalytic mineralization of azo dye Acid Orange 7 under solar light irradiation
(Desalination Publications, 2012)The objective of this study was to investigate mineralization of hazardous water soluble azo dye Acid Orange 7 (AO7) under photocatalytic process. In this experiment, sunlight was used as the source for UV irradiation and ... -
Decolorization of Orange II using an anaerobic sequencing batch reactor with and without co-substrates
(The Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, 2012-02)We investigated the decolorization of Orange II with and without the addition of co-substrates and nutrients under an anaerobic sequencing batch reactor (ASBR). The increase in COD concentrations from 900 to 1750 to 3730 ... -
Solar photocatalytic degradation of mono azo methyl orange and diazo reactive green 19 in single and binary dye solutions: Adsorbability vs photodegradation rate
(Springer-Verlag Berlin Heidelberg, 2013-05)The objective of this study was to examine the effects of adsorbability and number of sulfonate group on solar photocatalytic degradation of mono azo methyl orange (MO) and diazo Reactive Green 19 (RG19) in single and ... -
Comparative study on photocatalytic degradation of mono azo dye acid orange 7 and methyl orange under solar light irradiation
(Springer Science+Business Media B.V., 2012-09)The objective of this study was to investigate and compare the kinetic photocatalytic degradation of mono azo dyes Acid Orange 7 (AO7) and Methyl Orange (MO) under solar light irradiation with titanium dioxide (TiO 2) as ... -
Performance and kinetic study on bioremediation of diazo dye (reactive black 5) in wastewater using spent GAC-biofilm sequencing batch reactor
(Springer Science+Business Media B.V., 2012-05)Combinations of sequential anaerobic and aerobic process enhance the treatment of textile wastewater. The aim of this study was to investigate the treatment of diazo dye Reactive Black 5 (RB5)- containing wastewater using ... -
Mineralization of diazo dye (Reactive Black 5) in wastewater using recirculated up-flow constructed wetland reactor
(Desalination Publications, 2012)Application of a sequential anaerobic and aerobic process in a constructed wetland can enhance the treatment performance of textile wastewater. In this study, two laboratory-scale recirculated up-flow constructed wetland ... -
Performance improvement of torque characteristics using the Multi Type Interior Permanent Magnet motor
(Praise Worthy Prize S.r.l., 2012)The torque characteristic of the novel Multi Type Interior Permanent Magnet (MTIPM) motor that can be operated as permanent magnet stepper (PMST) and dc brushless motor (BLDC) configuration is presented. It briefly presents ... -
The processing, characterization, and properties of fly ash based geopolymer concrete
(Advanced Study Center Co. Ltd, 2012)In recent years, attempts to increase the utilization of fly ash as a replacement for ordinary Portland cement (OPC) in concrete have increased in significance. Geopolymer concrete does not need the presence of Portland ...