A landfill site, also known as a tip, dump, rubbish dump, garbage dump, or dumping ground, is a site for the disposal of waste materials. Landfill is the oldest and most common form of waste disposal, although the systematic burial of the waste with daily, intermediate and final covers only began in the 1940s. In the past, refuse was simply left in piles or thrown into pits; in archeology this is known as a midden.
A leachate is any liquid that, in the course of passing through matter, extracts soluble or suspended solids, or any other component of the material through which it has passed.
Comamonas acidovorans is a Gram-negative, non-spore-forming, aerobic, rod-shaped bacterium from the genus Comamonas and family Comamonadaceae. C. acidovorans occur in soil, mud, and water in Japan, the Netherlands, Great Britain, the US, Spain, and Sweden. It has a major role in natural biodegradation.
Comamonas composti is an aerobic, Gram-negative, rod-shaped, non-spore-forming, weak oxidase-positive, catalase-positive, motile bacterium from the genus Comamonas and family Comamonadaceae, which was isolated from food waste compost.
Comamonas denitrificans is a Gram-negative, oxidase- and catalase-positive, motile bacterium with a polar flagellum from the genus Comamonas and family Comamonadaceae, which was isolated from an activated sludge. Its colonies are yellow-white colored. Unlike other species of Comamonas, C. denitrificans can reduce nitrate to nitrogen gas.
Comamonas granuli is a Gram-negative, catalase-positive, oxidase-positive, non-spore-forming, motile, rod-shaped bacterium from the genus Comamonas and family Comamonadaceae, which was isolated from microbial granules.
Comamonas guangdongensis is a Gram-negative, anaerobic, motile bacterium from the genus Comamonas and family Comamonadaceae, which was isolated from subterranean forest sediment in Guangdong Province in China.
Comamonas kerstersii is a Gram-negative, oxidase- and catalase-positive, motile bacterium with multitrichous polar flagella from the genus Comamonas and family Comamonadaceae. C. kerstersii is a subgroup of Comamonas terrigena, and has been linked to cases of perforated appendices.
Comamonas koreensis is a Gram-negative, aerobic, oxidase- and catalase-positive, nonfermentative bacterium with no flagella from the genus Comamonas, which was isolated from a wetland sample in Woopo in the Republic of Korea.
Comamonas odontotermitis is a Gram-negative, aerobic, weak oxidase- and catalase-positive, non-spore-forming, rod-shaped, motile bacterium from the genus of Comamonas, which was isolated from the gut of the termite Coptotermes formosanus.
Comamonas terrae is a bacterium from the genus Comamonas, which was isolated from agricultural soil in Thailand. C. terrae has an arsenite-oxidizing ability.
Comamonas terrigena is a Gram-negative, rod-shaped bacterium from the genus Comamonas and the family of Comamonadaceae, which was isolated from contaminated soil in Slovakia. C. terrigena has the ability to degrade phenols.
Comamonas thiooxydans is a Gram-negative, rod-shaped bacterium from the genus Comamonas and family Comamonadaceae, which was isolated from a sulfur spring. C. thiooxydans has the ability to oxidize thiosulfate.
Comamonas zonglianii is a Gram-negative, aerobic, oxidase- and catalase-positive, nonmotile bacterium from the genus Comamonas and family Comamonadaceae, which was isolated from a phenol-contaminated soil. Colonies of C. zonglianii are pale yellow in color.
Advenella faeciporci is a nitrite-denitrifying bacterium from the genus Advenella which was isolated from piggery wastewater.
Castellaniella caeni is a Gram-negative, oxidase-positive, catalase-negative, facultatively anaerobic, denitrifying, nonmotile bacterium from the genus Castellaniella, isolated from the sludge of the aerobic treatment tanks of a municipal leachate treatment plant in Daejeon in the Republic of Korea.
Thauera mechernichensis is a bacterium from the genus of Thauera which was isolated from a landfill leachate treatment plant.
Hyphomicrobium nitrativorans is a bacterium from the genus of Hyphomicrobium which was isolated from biofilm at the Montreal Biodome in Canada.
Comamonas jiangduensis is a Gram-negative, non-spore-forming and motile bacterium from the genus Comamonas which has been isolated from soil from a rice field in Jiangdu in China.
Comamonas phosphati is a Gram-negative, rod-shaped, facultatively anaerobic and non-spore-forming bacterium from the genus Comamonas which has been isolated from a phosphate mine in Yunnan in China.
