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3 Polish Journal of Environmental Studies

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Assessing the effectiveness of waste minimization methods in solid waste reduction at the source by manufacturing firms in Malaysia

100%

Mallak S. K. , Ishak M. B. , Kasim M. R. M. , Samah M. A. A.

nr 5

Manufacturing industries in Malaysia play a fundamental role in economic growth and enhancing the population’s standard of living. However, a huge quantity of industrial wastes is generated daily, exacerbating landfill disposal issues. Waste minimization as the most sustainable approach of waste handling contributes to a significant reduction of waste. In Malaysia, practicing waste minimization by manufacturing firms is not very common. Thus, this study attempted to determine the most commonly practiced methods of minimization by manufacturing firms in Malaysia. Also, the effectiveness of each method in waste reduction was explored. Data were collected through survey and analyzed through the quantitative and qualitative approaches from 214 manufacturing firms that cover small, medium, and large sizes with a 67.5% response rate. The questionnaire was developed based on the review of literature and is validated by a panel of experts. Paired sample T-test was used to compare the solid waste generation one year before and one year after practicing methods. Spearman Rho Correlation and multiple linear regression analysis were used to explore the relationships of methods and their significant contribution in waste reduction. Findings revealed that waste generation was significantly different after practicing waste minimization methods (p<0.05). With respect to the methods correlation and effectiveness in waste reduction, all waste minimization methods have a significant and positive correlation with waste reduction (p<0.05). Methods include segregation of wastes, on-site reuse and recycle, improved housekeeping, and equipment modification – all of which were found to be effective in waste reduction for Malaysian manufacturing firms (p<0.05).

A case study on public participation for the conservation of a tropical urban river

100%

Chun M. H. , Sulaiman W. N. A. , Samah M. A. A.

nr 4

Population pressure and land use activities in urban areas are deteriorating the health of ecologically rich tropical rivers. Despite various programs and enforcement carried out by government agencies, most river conservation projects are not sustained according to the expected objectives. Much of the blame is due to lack of public environmental awareness and participation. However, there is a lack of adequate local field data to explain this scenario. This case study was specifically conducted to evaluate the local public perception and willingness to participate on a river conservation project of an urbanized Temiang River watershed located in Peninsular Malaysia. This survey was carried out on 200 randomly selected respondents. Contrary to blame, results indicated that awareness was not the major issue; instead, it is their voluntary involvement in protecting the river. Overall, the respondents show a high willingness to be involved in the conservation program. However, factors of age, educational background, gender, income level, marital status, and residential locations determine the level of their willingness to participate.

Analysis of municipal solid waste generation and composition at administrative building cafe in Universiti Putra Malaysia: a case study

100%

Hamid K. B. A. , Ishak M. Y. , Samah M. A. A.

nr 5

Increasing solid waste is one of the most crucial environmental problems in Malaysia. Improper management of solid waste will cause many problems. Increasing solid waste, lack of segregation from the source, and lack of knowledge and awareness about recycling have only worsened the problem. Knowledge of solid waste generation and composition is necessary for accurate decision making in the management strategy of municipal solid waste. The objectives of this study were to measure solid waste generation and analyse and compare the composition of solid waste in two different cafés at Universiti Putra Malaysia. Solid waste samples were collected every day except for Saturdays and Sundays over a three-week period and were sorted and classified into several weighed compositions such as food waste, plastic, paper, aluminium cans, glass, metal, textiles, wood, and more. Results showed that total municipal solid waste generated during three weeks of sampling at Forestry café and Park View café were 325.75 kg, or an average of 21.72 kg/day, and 2979.70 kg, or 198.65 kg/day, respectively. There is significant difference in data collection between the two locations. From the result, it shows that organic waste was the main component in municipal solid waste composition for both cafés, where it is 81% for Forestry Café and 96% for Park View Café, followed by the other compositions. The high organic waste indicates the necessity for frequent collection and removal, as well as having a good prospect for organic waste recycling through composting. Based on this information, a proper waste management system can be introduced to treat the solid waste more efficiently.