Past, present, and future of MSW landfills in Japan

Tanaka, Nobutoshi; Tojo, Yasumasa; Matsuto, Toshihiko

doi:10.1007/s10163-005-0133-6

Cited by 30 publications

(9 citation statements)

References 2 publications

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“…Total MSW generation and generation rate in Japan for the year 1992 was 51.18 million tons and 408.8 kpc, respectively (World Bank, 1997). The significant increase of MSW generation in Japan was observed in 2005 (693.5 kpc; Tanaka et al, 2005). According to Shekdar (2009), the per capita per year waste generation in Japan was 401.5 kg for the year 2007 with the GDP of US$33,010.…”

Section: Msw Generation From Other Asian Nationsmentioning

confidence: 97%

Municipal Solid Waste Generation, Composition, and Management: The World Scenario

Karak¹,

Bhagat²,

Bhattacharyya³

2012

Critical Reviews in Environmental Science and Technology

417

157

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Section: Msw Generation From Other Asian Nationsmentioning

confidence: 97%

Municipal Solid Waste Generation, Composition, and Management: The World Scenario

Karak¹,

Bhagat²,

Bhattacharyya³

2012

Critical Reviews in Environmental Science and Technology

417

157

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“…Furthermore, inorganic Hg can be methylated by soil bacterial action, which causes high toxicity to surrounding ecosystems under different conditions (Cheng and Hu, 2012;Earle et al, 1999;Lee et al, 2016). Similar to landfills in other countries over the last century, about 70% of MSW landfills in Japan were built into mountainsides using the natural space between ridges to limit land usage (Tanaka et al, 2005). It has been reported that between 1976 and 1979, only 40% of traditional landfills were constructed with a liner system for preventing leachate leaks; this increased to 100% for landfills constructed in 1990 (Tanaka et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

“…Similar to landfills in other countries over the last century, about 70% of MSW landfills in Japan were built into mountainsides using the natural space between ridges to limit land usage (Tanaka et al, 2005). It has been reported that between 1976 and 1979, only 40% of traditional landfills were constructed with a liner system for preventing leachate leaks; this increased to 100% for landfills constructed in 1990 (Tanaka et al, 2005). Meanwhile, the double-liner system for preventing leachate leaks became mandatory for new Japanese landfills after 1997 (Tanaka et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

“…It has been reported that between 1976 and 1979, only 40% of traditional landfills were constructed with a liner system for preventing leachate leaks; this increased to 100% for landfills constructed in 1990 (Tanaka et al, 2005). Meanwhile, the double-liner system for preventing leachate leaks became mandatory for new Japanese landfills after 1997 (Tanaka et al, 2005). Therefore, the potential leachate pollution caused by those traditional landfills without anti-leaching systems have been a societal concern (Moody and Townsend, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Comparison of mercury and methylmercury bioaccumulation in earthworms (Bimastus parvus) native to landfill-leachate-contaminated forest soil

Arizono

Ji³

et al. 2018

J. Toxicol. Sci.

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Total mercury (THg) and methylmercury (MeHg) bioaccumulation was explored in the Bimastus parvus species of earthworm (B. parvus) native to the leachate-contaminated forest soils around a Hg-polluted traditional landfill in Japan. General soil properties and concentrations of THg and MeHg in forest soils and in B. parvus were determined. The results indicated that the average THg concentrations in B. parvus and in forest soils in the leachate-contaminated sites were 10.21 and 14.90 times higher than those in the reference sites, respectively, whereas similar average MeHg concentrations were observed in forest soils (< 0.01 mg kg) and in B. parvus (0.100-0.114 mg kg) across all sampled sites. The average bioaccumulation factors of THg in B. parvus (BAF) in forest soil were similar between the leachate-contaminated sites and the reference sites. Cluster and regression analyses demonstrated that the B. parvus Hg (THg and MeHg) and soil THg were positively correlated with each other and with soil organic matter (SOM) and clays, but were negatively correlated with sand and hardly correlated with silts and pH in leachate-contaminated forest soils. From these results, it was proposed that Hg exposure to food chains is possible through B. parvus, because B. parvus showed a high ability to accumulate THg and MeHg in both leachate-contaminated and reference forest soils. Together, these findings indicated that the role of B. parvus in MeHg production is not clear, and it is possible that the MeHg in B. parvus was firstly formed within forest soils and then accumulated in their tissues.

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“…With intermediate cover, it was called the sandwich-like landfill method, but there was no technical standard until 1971. 38 This technology has been being used in Mongolia since 2009.…”

Section: Discussionmentioning

confidence: 99%

Microbiological contamination and content of heavy metals in unlined landfill sites of Ulaanbaatar

Byamba-Ochir

Tugjjav

2019

Int J Sci Rep

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Background: The aim of the study was to investigate bacterial and heavy metal pollution in four landfill sites of Ulaanbaatar. Surveyed landfills included closed and currently operating unlined landfills.Methods: In order to sample, we divided each landfill sites into three zones including zone 1: cover soil or in the boundary of the landfill, zone 2: from the boundary of the landfill to hygiene zone (25 м2 to 500 м2 out of cover soil), zone 3: from hygiene zone to settlement areas and compared the pollution. Results: The titre of Cl. perfringens, presence of Salmonella and total bacteria were not significantly different for landfill sites. The titre of E. coli and the titre of Proteus for industrial landfill site were significantly different than other sites. The titre of E. coli and the titre of Proteus for the zone 1 were significantly different than the zone 3. The presence of Salmonella and the total bacteria for the zone 1 was significantly different than the zone 2 and zone 3. The titre of Cl. perfringens was not significantly different for landfill zones. The bacterial indicators were not significantly different for seasons of the year. Content of heavy metals in soil landfills were Pb 0.1-63 mg/kg, Cr 0.4-5124 mg/kg, Ni 3.2-84 mg/kg, Zn 21.7-776 mg/kg, Cd 0.01-2.8 mg/kg.Conclusions: Microbiological contamination and content of heavy metals in closed unlined landfill are not different from currently operating unlined landfills.

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Past, present, and future of MSW landfills in Japan

Cited by 30 publications

References 2 publications

Municipal Solid Waste Generation, Composition, and Management: The World Scenario

Municipal Solid Waste Generation, Composition, and Management: The World Scenario

Comparison of mercury and methylmercury bioaccumulation in earthworms (<i>Bimastus parvus</i>) native to landfill-leachate-contaminated forest soil

Microbiological contamination and content of heavy metals in unlined landfill sites of Ulaanbaatar

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