Newspaper as a substrate for cellulolytic landfill bacteria

Cummings, Stephen; Stewart, C. S.

doi:10.1111/j.1365-2672.1994.tb01616.x

Cited by 13 publications

(10 citation statements)

References 16 publications

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“…At the end of the experimental period, the newspaper in the columns was still visible and most of the newspaper in the media remained similar in appearance to the original material. These observations are consistent with other studies that indicate that newspaper is somewhat resistant to bacterial degradation under anaerobic conditions (Cummings and Stewart, 1994;Volokita and co-workers, 1996b). This resistance seems to be at least partly the result of two factors.…”

Section: Resultssupporting

confidence: 93%

Engineered Bioretention for Removal of Nitrate From Stormwater Runoff

Kim

Seagren²,

Davis³

2000

proc water environ fed

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Control of nitrate from urban stormwater runoff can have a significant impact on nitrate levels in local waters. One option for providing treatment to urban stormwater runoff is bioretention, a simple plant-and soil-based low impact treatment/infiltration facility. The goal of this study is to re-engineer the concept of bioretention to remove nitrate from urban runoff. Specifically, a modification to incorporate a continuously submerged anoxic zone with an overdrain is being evaluated for its capacity for nitrate removal via denitrification. Work to date has focused on selecting an electron donor and carbon source that will promote significant denitrification and be stable for extended periods of time in the subsurface. The electron donor and carbon source to be used in bioretention must be readily metabolizable, as well as low cost and readily available. Two sets of organic substrates for chemoorganotrophic denitrifying bacteria were evaluated: Set #1, alfalfa, newspaper, and leaf mulch compost; and Set #2, sawdust, wood chips, and wheat straw. An inorganic substrate for chemolithotrophic denitrifying bacteria, sulfur, was evaluated in experimental Set #3, in three configurations: large sulfur particles (2 to 2.36 mm) alone, large sulfur particles with limestone, and small sulfur particles (0.6 to 1.18 mm) with limestone. All materials were uniformly mixed with washed silica sand and transferred into 40 cm long by 6.4 cm inner diameter Plexiglas columns. A total of 4 columns were used for each experimental set, including a control column packed with washed silica sand only. The columns were seeded with the supernatant of settled secondary effluent and fed anoxic synthetic stormwater runoff. Based on the Set#1 and Set#2 experiments for the organic substrates, excellent nitrate removal was observed in columns containing alfalfa, newspaper, wheat straw, wood chips, and sawdust. However, based on total nitrogen removal and other water quality characteristics, newspaper and wood chips are the best candidates out of these sets. In Set#3, significantly better nitrate removal occurred in the column with the small sulfur particles/limestone compared to the large sulfur particles, probably as a result of the increased surface area of the sulfur available per unit volume of reactor. Further studies will be performed using the electron donors that gave the best nitrate removal efficiency and effluent quality in the experiments reported here: newspaper, wood chips, and small sulfur particles/limestone.

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Section: Resultssupporting

confidence: 93%

Engineered Bioretention for Removal of Nitrate From Stormwater Runoff

Kim

Seagren²,

Davis³

2000

proc water environ fed

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“…The origin and anaerobic culture of the bacterial strains were as described by Cummings and Stewart (1994). For routine subculturing and unless otherwise stated the substrate for growth was Whatman filter paper (Whatman No.…”

Section: Stralns Medla and Product Analyslsmentioning

confidence: 99%

“…Incubations with paper (at 37°C unless specified otherwise) and the treatment of filter paper with printer's ink were performed as described by Cummings and Stewart (1994). The newspaper used was printed on recycled paper (SCA Ayelsford Ltd, Ayelsford, Kent, UK).…”

Section: Stralns Medla and Product Analyslsmentioning

confidence: 99%

Methanogenic interactions in model landfill co-cultures with paper as the carbon source

Cummings¹,

Stewart²

1995

Lett Appl Microbiol

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im. I n a simple laboratory model system containing co-cultures of cellulolytic bacteria from landfills and Methanobrevibacter smith::, methanogenesis was optimal at 37°C. Although paper solubilization was greatest in cultures containing Eubacterium strain LF 9, methanogenesis was greatest in cultures containing Eubacterium strain LF 11. Coating filter paper with printer's ink reduced methanogenesis. Cultures grown on newspaper produced less methane than those grown on filter paper. However, the rates of methane production from these substrates were similar when calculated in relation to microbial biomass present.

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“…As cellulose accounts for 40% to 50% of MSW [8], it is likely that cellulolytic microorganisms play an essential role in the degradation of refuse. Nevertheless, the cellulolytic bacteria involved in the degradation of MSW are poorly defined and only three genera including cellulose‐decomposing species have been reported to be found in MSW: Cellulomonas , Clostridium and Eubacterium [12–15]. However, no information is available on the characterization of cellulolytic bacterial population in landfills.…”

Section: Introductionmentioning

confidence: 99%

Enumeration and characterization of cellulolytic bacteria from refuse of a landfill

Pourcher

Sutra²,

Hébé

et al. 2001

FEMS Microbiology Ecology

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Enumeration and phenotypic characterization of aerobic cellulolytic bacteria were performed on fresh, 1 year old and 5 years old refuse samples of a French landfill site. Numbers of cellulolytic bacteria ranged from 1.1x10(6) to 2.3x10(8) c.f.u. (g dry wt.)(-1) and were lower in 5 years old refuse samples. A numerical analysis of phenotypic data based on 80 biochemical tests and performed on 321 Gram-positive isolates from refuse, revealed a high phenotypic diversity of cellulolytic bacteria which were distributed into 21 clusters. Based on the phenotypic analysis and the sequencing of 16S rDNA of five representative strains of major clusters, the predominant cellulolytic groups could be assigned to the family of Bacillaceae and to the genera Cellulomonas, Microbacterium and Lactobacillus. Furthermore, chemical parameters such as pH, carbohydrates and volatile solid contents influenced the composition of the cellulolytic bacterial groups which were reduced essentially to the family of Bacillaceae in the oldest refuse samples.

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Newspaper as a substrate for cellulolytic landfill bacteria

Cited by 13 publications

References 16 publications

Engineered Bioretention for Removal of Nitrate From Stormwater Runoff

Engineered Bioretention for Removal of Nitrate From Stormwater Runoff

Methanogenic interactions in model landfill co-cultures with paper as the carbon source

Enumeration and characterization of cellulolytic bacteria from refuse of a landfill

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