Tengku Nuraiti Tengku Izhar, Dr.
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41117
This page provides access to scholarly publications by UniMAP Faculty members and researchers.2024-03-29T07:55:41ZInvestigation of noise reduction coefficient of organic material as indoor noise reduction panel
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41243
Investigation of noise reduction coefficient of organic material as indoor noise reduction panel
Tengku Nuraiti, Tengku Izhar; Laila Mardiah, Deraman; Wani Nadirah, Ibrahim; Nabilah Aminah, Lutpi
Noise can cause a few types of effect to human health especially in hearing like hearing loss. Indoor noise pollution comes from many sources and places. The research focuses on the sound reduction wall surface material rather than any techniques available and using organic material like coconut coir fiber, rice husk and sawdust. These sound reduction material is suitable to apply as interior lining for homes and offices. This research conducted to compare the efficiency of coconut coir fiber, rice husk and sawdust as indoor noise reduction, to evaluate the effectiveness indoor noise level by using wall surface sound reducer material and to determine the best material that will reduce noise level. In preparation of board panel, two binders were used which is polyester resin and hardening catalyst, cement and sand. For board panel using binder of polyester resin and hardening catalyst, the binders were stirred for two minutes. Then, the mixture of polyester resin, hardening catalyst with raw material was mix uniformly. The suppression done for 24 hours in order to obtain a composite outcome that is denser. Then, the ratio for coconut coir fiber, cement and sand is 1. 5:0. 5:0. 5, the same ratio used for sawdust and rice husk and the Noise Reduction Coefficient (NRC) will be determined. The parameter use to determine the NRC and the sound transmission are the frequency, speaker intensity and the distance from the speaker. If not absorbed, the sound can be reflected and this will prevent sound dispersed to other space. The results show rice husk is better with cement binder and sand, while for polyester resin and hardening catalyst binder, sawdust is the best. Therefore, currently organic materials present good alternative to synthetic material providing good health with green environment as well as enhancing natural agricultural and growth.
Link to publisher's homepage at http://www.scientific.net/
2015-01-01T00:00:00ZA study on Hydrogen Sulphide as potential tracer in landfill gas monitoring
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/35603
A study on Hydrogen Sulphide as potential tracer in landfill gas monitoring
Tengku Nuraiti, Tengku Izhar, Dr.; Zaity Syazwani, Mohd Odli; Irnis Azura, Zakarya, Dr.; Farah Naemah, Mohd Saad; Norlia, Mohamad ibrahim; Roshazita, Che Amat; Tan, Ley Binn
Municipal solid waste (MSW) landfills are one of the major source of hydrogen sulphide (H2S) which is the offensive odours potentially creating annoyance in adjacent communities. This project focuses on H2S emission from landfills in Perlis, Malaysia. Landfill gas (LFG) samples were collected and analyzed accordance with NIOSH method 6013. The mean concentrations of H2S in Kuala Perlis Landfill and Padang Siding Landfill are 210.68 ppm and 242.85 ppm respectively. High concentrations of H2S may be a concern for employees working on the landfill site. These results indicate that workers should use proper personal protection at landfill when involved in excavation, landfill gas collection, and refuse compaction. The formation of H2S most likely to be contributed by the biological conversion of sulfate from gypsum-rich soils and landfill wastewater treatment sludges by sulfate-reducing bacteria (SRB) which can utilize dissolved sulfate as an electron acceptor. H2S is conveniently detected by hand held analyzer, such Jerome meter, landfill gas analyzer. In the organic range, in the ease of detection range in the dispersion rate within the landfill site, the monitored H2S gas form a very noticeable concentration with the travelling wind direction. It proved that the dispersion rate of H2S are suitable as tracer to detect route of travelling in a certain distance.
Link to publisher's homepage at http://www.ttp.net/
2013-01-01T00:00:00ZAdsorption efficiency of garcinia mangostana linn. (GML) shells based activated carbon
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/34051
Adsorption efficiency of garcinia mangostana linn. (GML) shells based activated carbon
Nabilah Aminah, Lutpi; W. Fadhilah, W. M. Khalik; Che Ku Kairulazam, Che Ku Abdullah; Wong, Yee Shian; Ong, Soon An, Dr.; Tengku Nuraiti, Tengku Izhar
The objective of this study is to investigate the adsorption efficiency of Garcinia Mangostana Linn. (GML) shells based activated carbon using two synthetic dyes which are methylene blue and acid orange 7. The parameters which were studied in batch mode are the effect of contact time, initial dyes concentration, particle size, adsorbent dosage and temperature. Scanning Electron Microscope (SEM) was used to determine the physical characterization of GML. Base on the percentage removal results, the basic dye (Methylene blue) depicts better performance if compared to the acid dye (Acid orange 7) with approximately 90% of the best percentage removal of Methylene blue.
Link to publisher's homepage at http://www.ttp.net/
2013-01-01T00:00:00ZSorption of methylene blue and acid orange 7 onto ananas comosus peels and leaves based activated carbon
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/34050
Sorption of methylene blue and acid orange 7 onto ananas comosus peels and leaves based activated carbon
Nabilah Aminah, Lutpi; Nurul Najiha, Jamil; Che Ku Kairulazam, Che Ku Abdullah; Wong, Yee Shian; Ong, Soon An, Dr.; Tengku Nuraiti, Tengku Izhar
The adsorption of Methylene Blue (MB) and Acid Orange 7 (AO7) dye onto Ananas Comosus Mixed Peels and Leaves (ACMPL) were carried out by conducting four different parameters such as initial concentration, pH, dosage of adsorbent, and contact time. Effect of initial concentration for both dyes showed that higher initial concentration would take longer contact time to attain equilibrium due to higher amount of adsorbate molecules. The effect of pH showed highest percentage removal for MB is at pH 9 which is 95.81%. Meanwhile for AO7 the highest percentage removal is 31.06% at pH 3. The percentage removal of MB had reached the equilibrium at dosage 0.5g while AO7 keep increasing with the increment of adsorbent dosage. The percentage removal of MB and AO7 had increased until hour 2.5 which was from 72.5% to 86.93% and 19.441% to 36.89% respectively and reached equilibrium at 3 hour contact time.
Link to publisher's homepage at http://www.ttp.net/
2013-01-01T00:00:00Z