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Shamshiry E.,National University of Malaysia | Nadi B.,National University of Malaysia | Mokhtar M.B.,National University of Malaysia | Komoo B.,National University of Malaysia | And 2 more authors.
Asian Journal of Chemistry | Year: 2012

Inefficient and/or insufficient solid waste management are one of the principal factors related to the quality degradation of natural environment. This study was conducted at Langkawi Island, which is one of the densely-populated and quite rapidly-growing touristic islands in Malaysia. The study was carried out to understand state of concepts and solid waste management practices in the island as well as their impacts on the local community, problems associated with the waste management practices, landfill leachate affecting water quality of Langkawi geopark. Environmental management system is explored by questionnaire directed towards the island residents and by interviews with personnel of Majlis Perbandaran Langkawi (municipality), key stakeholders in Langkawi Development Authority and Majlis Daerah Langkawi. The aim of this research is to evaluate the effect of landfill leachate in study area based on assessment of the criteria related to economical, social-cultural environment, physical environment and biological environment and survey on water pollution due to landfill leachate and to present some perception and views of local residents on issues related to solid waste management like the aesthetic value of the island environment. Source


Shamshiry E.,National University of Malaysia | Nadi B.,National University of Malaysia | Bin Mokhtar M.,National University of Malaysia | Komoo I.,National University of Malaysia | And 2 more authors.
Proceedings of the 2011 International Conference on Artificial Intelligence, ICAI 2011 | Year: 2011

Municipal solid waste (MSW) is the natural result of human activities. MSW generation modeling is major significant in municipal solid waste management system planning. Predicting the amount of generated waste is difficult task because it is affect by various parameters. In this research, Artificial Neural Network (ANN) was trained and tested to weekly waste generation (WWG) model in Sari's city of Iran. Input data is consisting WWG observation and the number of trucks, personnel and fuel cost were obtained from Sari Recycling and Material Conversion Organization. The gathering data related to monitoring 2006 to 2008. Source


Shamshiry E.,National University of Malaysia | Nadi B.,National University of Malaysia | Bin Mokhtar M.,National University of Malaysia | Komoo I.,National University of Malaysia | And 2 more authors.
Journal of Environmental and Public Health | Year: 2011

The population growth, changing consumption patterns, and rapid urbanization contribute significantly to the growing volumes of solid waste that are generated in urban settings. As the rate of urbanization increases, demand on the services of solid waste management increases. The rapid urban growth in Langkawi Island, Malaysia, combined with the increasing rates of solid waste production has provided evidence that the traditional solid waste management practices, particularly the methods of waste collection and disposal, are inefficient and quite nonsustainable. Accordingly, municipal managers and planners in Langkawi need to look for and adopt a model for solid waste management that emphasizes an efficient and sustainable management of solid wastes in Langkawi Island. This study presents the current practices of solid waste management in Langkawi Island, describes the composition of the solid waste generated in that area, and presents views of local residents and tourist on issues related to solid waste management like the aesthetic value of the island environment. The most important issue of this paper is that it is the first time that integrated solid waste management is investigated in the Langkawi Island. Copyright © 2011 Elmira Shamshiry et al. Source


Ta G.C.,National University of Malaysia | Mokhtar M.B.,National University of Malaysia | Peterson P.J.,National University of Malaysia | Peterson P.J.,Flinders University | Yahaya N.B.,Ministry of Housing and Local Government
Industrial Health | Year: 2011

The European Union (EU) and the World Health Organization (WHO) have applied different approaches to facilitate the implementation of the UN Globally Harmonized System of Classification and Labelling of Chemicals (GHS). The EU applied the mandatory approach by gazetting the EU Regulation 1272/2008 incorporating GHS elements on classification, labelling and packaging of substances and mixtures in 2008; whereas the WHO utilized a voluntary approach by incorporating GHS elements in the WHO guidelines entitled 'WHO Recommended Classification of Pesticides by Hazard' in 2009. We report on an analysis of both the mandatory and voluntary approaches practised by the EU and the WHO respectively, with close reference to the GHS 'purple book'. Our findings indicate that the mandatory approach practiced by the EU covers all the GHS elements referred to in the second revised edition of the GHS 'purple book'. Hence we can conclude that the EU has implemented the GHS particularly for industrial chemicals. On the other hand, the WHO guidelines published in 2009 should be revised to address concerns raised in this paper. In addition, both mandatory and voluntary approaches should be carefully examined because the classification results may be different. © 2011 by National Institute of Occupational Safety and Health. Source


Shamshiry E.,National University of Malaysia | Mokhtar M.B.,National University of Malaysia | Komoo I.,National University of Malaysia | Hashim H.S.,National University of Malaysia | And 4 more authors.
Asian Journal of Chemistry | Year: 2013

The place now used as the landfill in Mashhad (due to the increasing population and expanding city, the place used as the landfill is old) does not follow some of the environmental and socio-political standards and criteria. It makes problems include the location of the landfill site which is close to population centers where there is fertile agricultural land. As a result, there is danger of leachate leakage and pollution of groundwater and land. Therefore the area of landfill needs assessment and investigation during four seasons. With the purpose of evaluation the groundwater chemical properties in landfill of Mashhad, in northeast of Iran, groundwater samples including seven samples from wells and also one sample as evidence were taken. These samples were analyzed and studied in laboratories with ASTM method. The obtained results explained that some quantities of heavy metals elements were more than the permissible levels in water samples near the Mashhad landfill and it may be argued that samples are contaminated in relation to the heavy metals. Some indices that including the metal and heavy metal contamination index explained the water samples from wells contain heavy metal pollution. The methods were applied for water metal index to evaluate the groundwater correlation in study area for metal pollution through measured and comparison by the standard amount. Source

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