Browsing by Author "Mohd Nasir Hassan"

Now showing 1 - 4 of 4
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    Air quality in Malaysia: Impacts, management issues and future challenges
    (Wiley-Blackwell Publishing Ltd, 2001) Muhamad Bin Awang; Abu Bakar Jaafar; Ahmad Makmom Abdullah; Marzuki Bin Ismail; Mohd Nasir Hassan; Ramdzaini Abdullah; Shamsuddin Johan; Hamdan Noor
    Observations have been made on the long-term trends of major air pollutants in Malaysia including nitrogen dioxide, carbon monoxide, the ozone and total suspended particulate matter (particularly PM10), and sulfur dioxide, emitted from industrial and urban areas from early 1970s until late 1998. The data show that the status of atmospheric environment in Malaysia, in particular in highly industrialized areas such as Klang Valley, was determined both by local and transboundary emissions and could be described as haze and non-haze periods.
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    Evaluation of the pollution levels of landfill sites - the Landfill Pollution Index (LPI)
    (Environmental Management Society Malaysia, 2004) Theng Lee Chong; Mohd Nasir Hassan; Muhamad Awang; Mohd Yazid Saman
    Most of the solid waste disposal sites in Malaysia are either open dumps or controlled tipping. The pollution levels from these sites are expected to be high especially the contamination of soil, air, surface and underground water. All these pollutions have direct and indirect links to human being. The risks associated with solid waste disposal sites involved three compartments or media, i.e. the atmosphere, water and soil. This "Cross media"or "Multimedia" impacts phenomenon has been recognized in various countries as being of potential importance and complicated. This study discusses the development of a new and simple evaluation system to assess the pollution levels of landfill sites.
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    Review of air pollution and health impacts in Malaysia
    (Elsevier, 2003) Rafia Afroz; Mohd Nasir Hassan; Noor Akma Ibrahim
    In the early days of abundant resources and minimal development pressures, little attention was paid to growing environmental concerns in Malaysia. The haze episodes in Southeast Asia in 1983, 1984, 1991, 1994, and 1997 imposed threats to the environmental management of Malaysia and increased awareness of the environment. As a consequence, the government established Malaysian Air Quality Guidelines, the Air Pollution Index, and the Haze Action Plan to improve air quality. Air quality monitoring is part of the initial strategy in the pollution prevention program in Malaysia. Review of air pollution in Malaysia is based on the reports of the air quality monitoring in several large cities in Malaysia, which cover air pollutants such as Carbon monoxide (CO), Sulphur Dioxide (SO2), Nitrogen Dioxide (NO2), Ozone (O3), and Suspended Particulate Matter (SPM).
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    Technological and economic evaluation of solid waste scavenging and recycling practices
    (Universiti Pertanian Malaysia Press, 1996) Zainur Dalila Abd Malek; Mohd Nasir Hassan; Nasiman Sapari
    Existing solid waste scavenging and recycling practices in the Klang Valley, Malaysia were investigated through personal visits and field surveys to landfill sites, trading companies and factories involved in recycling. Collection of recyclable material has long been practised in landfill sites as it provides good additional income. Dealers of scrap and recyclable items who operate at the landfill sites provide a source of supply to manufacturing concerns. Glass recycling industries benefit greatly by using recycled cullet, which improves fuel efficiency. Major economic, technical and other constraints related to recycling are discussed.