Municipal solid waste management in Malaysia: Practices and challenges

Manaf, Latifah Abd; Samah, Mohd Armi Abu; Zukki, Nur Ilyana Mohd

doi:10.1016/j.wasman.2008.07.015

Cited by 408 publications

(235 citation statements)

References 3 publications

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“…Manaf, Samah, and Zukki (2009) reported that domestic wastes is the primary source of the generation of solid wastes as a result the high concentration of Cd in Malaysia and its coast.…”

Section: Siltmentioning

confidence: 99%

Evaluation of Status of Heavy Metals Pollution of Sediments in Qua-Iboe River Estuary and Associated Creeks, South-Eastern Nigeria

Uwah¹,

Dan²,

Etiuma³

et al. 2013

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Sixteen bottom sediment samples collected from Qua-Iboe River estuary and associated creeks were analyzed for Cd, Cr, Cu, Fe, Pb, Zn, Ni, pH, Organic carbon (orgC),and grain size in order to assess the current pollution status in sediment of the study area. Concentration data were processed using Pearson correlation analysis. Sediment pollution assessment was carried out using Enrichment factor, Geo-accumulation index and Modified degree of contamination. The calculated enrichment factor showed that the sediment was enriched with Cd, Zn, Cu and Pb. The results of geo-accumulation index (Igoe) indicated that sediments are unpolluted with Fe, moderately polluted with Cr, Cu, Pb, strongly polluted with Cd and extremely polluted with Ni. This was attributed mainly to oil contaminating wastes and metal scraps. The results of the modified degree of contamination (mC d ) revealed that the sediment of Qua Iboe estuary and associated creeks fall between 8 ≤ mC d ≤ 16 indicating very high degree of contamination.

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“…Manaf, Samah, and Zukki (2009) reported that domestic wastes is the primary source of the generation of solid wastes as a result the high concentration of Cd in Malaysia and its coast.…”

Section: Siltmentioning

confidence: 99%

Evaluation of Status of Heavy Metals Pollution of Sediments in Qua-Iboe River Estuary and Associated Creeks, South-Eastern Nigeria

Uwah¹,

Dan²,

Etiuma³

et al. 2013

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“…Based on Table 3 in comparison with Table 4, the combined data was formed into the Table 5 below whereby the data of food waste composition also included in which significant differences were seen between both methods [28]. The literature also stated that only 1% of C, H, S and O were based on mass balance calculation whereby 61% of data were obtained using direct chemical analysis [28].…”

Section: Comparison Between Ultimate Anaysis and Chns Analyzermentioning

confidence: 99%

“…The literature also stated that only 1% of C, H, S and O were based on mass balance calculation whereby 61% of data were obtained using direct chemical analysis [28].…”

Section: Comparison Between Ultimate Anaysis and Chns Analyzermentioning

confidence: 99%

Chns analysis towards food waste in composting

Firdaus¹,

Samah²,

Hamid³

2018

J. CleanWAS

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High food waste generation in Malaysia that reached up to 15, 000 tonnes per day assign for major problems towards environment, economy and social aspect. Alternative method had been studied for the past years, but composting was seen among the best possible solution to treat this matter. Composting not only has an environmentally method but it also produces a valuable end product that will benefit in agricultural sector. Further studies had been done in this paper to represent their macro and micro nutrient quality as well as their bioavailability towards plant and the analysis of data collected in both CHNS analyser and mathematical method using ultimate analysis. This study also applied enhanced composting process with its segregation, drying, grinding and standard aeration time. Each container has been rotated for 5 minutes yet different resting time was applied which are 25, 55, 155 minutes namely A, B, C and D within 2 hours period. Result shown that overall Carbon (C), Nitrogen (N) and Sulphur (S) concentration increases as the higher aeration was applied while the Hydrogen vice versa. The highest elemental percentage distribution recorded is carbon (31%) while the lowest recorded is S (0.115%). The data collected from Ultimate Analysis was seen not applicable to be use as it has the same content as food waste after composting. The compound molecular formula recorded was C29H7N5S. Regarding ratio of carbon to nitrogen results, it was found that it ranged from 5.39 to 5.71% for different compost treatment under study, where the lowest value of C and N ratio (5.39%) for sample C and the highest value (5.71%) was obtained for sample B with all has the same C/N ratio which is 6: 1 which suitable range in application of soil amendment. Therefore, this study found a significant relationship between chemical factors and compost formation which contribute to better analysis, especially to food waste management.

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“…Rapid economic development and population growth, inadequate infrastructure and land scarcity was Malaysia's most critical issues in managing the municipal waste. As stated by [2], the per capita generation rate of municipal waste is about 0.5 to 0.8 kg/person/day, which domestic waste is the primary sources. Agriculture waste, industrial waste, domestic waste and construction waste were wastes that are trying to be developed by researchers and commercialize as construction materials in replacing cement.…”

Section: Introductionmentioning

confidence: 99%

Strength Performance of Blended Ash Based Geopolymer Mortar

2018

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Abstract.Geopolymer is a based on inorganic alumino-silicate binder system. Geopolymeric materials are formed using materials that containing silica and aluminium such as fly ash and rice husk ash, which activated by alkaline solution. This paper presents the study on the effect of replacement of SSA in RHA based geopolymer, types of curing and different molarity of NaOH used on the strength of Sewage Sludge Ash (SSA) and Rice Husk Ash (RHA) based geopolymer mortar incorporating with three (3) different mix proportions. Based geopolymer mortar was synthesized from treated sewage sludge and rice husk undergoing incineration process in producing ashes, activated with sodium silicate and sodium hydroxide solution by ratio of 2.5:1 and solution to ash ratio of 1:1. Molarity of 8M and 10M NaOH were used. The percentages of SSA replacement were 0%, 10% and 20% by weight. Compressive strength was conducted at age 7, 14 and 28 days to see the development of strength with two curing regimes, which are air curing and oven curing (60°C for 24 hours). From the research conducted, the ultimate compressive strength (6.28MPa) was obtained at zero replacement of SSA taken at 28 days of oven curing with 10M of NaOH. This shows that RHA, which is rich in silica content is enough to enhance the strength of geopolymer mortar especially with high molarity of NaOH.

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Municipal solid waste management in Malaysia: Practices and challenges

Cited by 408 publications

References 3 publications

Evaluation of Status of Heavy Metals Pollution of Sediments in Qua-Iboe River Estuary and Associated Creeks, South-Eastern Nigeria

Evaluation of Status of Heavy Metals Pollution of Sediments in Qua-Iboe River Estuary and Associated Creeks, South-Eastern Nigeria

Chns analysis towards food waste in composting

Strength Performance of Blended Ash Based Geopolymer Mortar

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