Unusual calcite stromatolites and pisoids from a landfill leachate collection system

Maliva, Robert G.; Missimer, Thomas M.; Leo, Kevin C.; Statom, Richard A.; Dupraz, Christophe; Lynn, Matthew J.; Dickson, J.A.D.

doi:10.1130/0091-7613(2000)028<0931:ucsapf>2.3.co;2

Cited by 10 publications

(13 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Few experiments have quantified the effects of biological processes, and even fewer have explicitly isolated the role of microorganisms (Bennett et al, 2000;Friis et al, 2003;Lü ttge and Conrad, 2004;Davis et al, 2007). This contrasts with an extensive literature concerning microbial calcite precipitation (e.g., Kirkland et al, 1999;Tiano et al, 1999;Maliva et al, 2000;Bosak and Newman, 2003;Dittrich et al, 2004;Ferris et al, 2004;DeJong et al, 2006;Lian et al, 2006;Sanchez-Ro- man et al, 2007). Moreover, most research concerning microbial calcite dissolution has targeted the marine realm (e.g., Brewer and Goldman, 1976;Emerson and Bender, 1981;Wenzhofer et al, 2001;Pfeifer et al, 2002;Walter et al, 2007).…”

Section: Introductionmentioning

confidence: 90%

Microbial dissolution of calcite at T=28°C and ambient pCO2

Jacobson

2009

Geochimica et Cosmochimica Acta

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 90%

Microbial dissolution of calcite at T=28°C and ambient pCO2

Jacobson

2009

Geochimica et Cosmochimica Acta

View full text Add to dashboard Cite

“…Biological growth in the LCRS can contribute to clogging by occupying granular media void space, coating geotextile surfaces, and contributing to mineral precipitation (Brune et al 1994;Rowe and Fleming 1998;Fleming et al 1999;Maliva et al 2000;Bouchez et al 2003;VanGulck et al 2003). Biological growth within a LCRS accompanies the decomposition of organics and other constituents found within leachate.…”

Section: Clogging Mechanismsmentioning

confidence: 99%

“…Biological growth can also cause inorganic components within the leachate to precipitate and accumulate within the LCRS (Brune et al 1994;Fleming et al 1999;Maliva et al 2000;Bouchez et al 2003;VanGulck et al 2003). Degradation of volatile fatty acids by microbial activity is well known to result in the formation of calcium carbonate.…”

Section: Clogging Mechanismsmentioning

confidence: 99%

Sustainable Practices for Landfill Design and Operation

Townsend¹,

Powell²,

Jain³

et al. 2015

View full text Add to dashboard Cite

“…This collection system controls leachate mounding and collects and removes contaminant that would otherwise be available for transport to the environment. However, the chemical and biological composition of the leachate that passes through the leachate collection system combined with the presence of microbial activity result in chemical and biological induced clogging (Brune et al 1994;Fleming et al 1999;Maliva et al 2000;Bouchez et al 2003). Voids within the drainage medium become filled with clog material.…”

Section: Introductionmentioning

confidence: 99%

Change in leachate chemistry and porosity as leachate permeates through tire shreds and gravel

McIsaac¹,

Rowe²

2005

Can. Geotech. J.

View full text Add to dashboard Cite

Rubber tire shreds are an attractive potential alternative to conventional gravel in the drainage layer of leachate collection systems at the base of landfills, yet the clogging and thus the long-term performance of tire shreds in this application is not known. This paper presents the results of an experimental investigation into the clogging potential of rubber tire shreds used as part of a leachate collection system at the base of a landfill when permeated with leachate. Experimental columns filled with two different rubber tire shreds and a conventional gravel drainage material were used to study the spatial and temporal variation of leachate characteristics and porosity changes within the drainage materials. It is shown that there are significant differences in the pore structures of the drainage materials and that these differences affect clog development and the length of time it takes for the hydraulic conductivity to drop below a threshold of 10 -5 m/s. The gravel is found to have a service life at least three times greater than that of an equivalent thickness of compressed (at 150 kPa) tire shred.Résumé : Les copeaux de pneus de caoutchouc offrent une alternative potentielle au gravier dans la couche conventionnelle de drainage des systèmes de collecte des lixiviants à la base des enfouissements sanitaires; par contre, l'on ne connaît pas le colmatage ni la performance à long terme des copeaux de caoutchouc à la base des enfouissements sanitaires. Cet article présente les résultats d'une étude expérimentale sur le potentiel de colmatage des copeaux de pneus de caoutchouc formant une composante du système de collecte du lixiviant à la base d'un enfouissement sanitaire lorsque infiltré par du lixiviant. Des colonnes expérimentales remplies de deux différents copeaux de pneus de caoutchouc et d'un matériau de drainage de gravier conventionnel ont été utilisées pour étudier la variation spatiale et temporelle des caractéristiques de lixiviant et des changements de porosité dans les matériaux de drainage. On montre qu'il y a des différences appréciables dans la structure des pores et que ces différences affectent le développement du colmatage et la longueur du temps requis pour que la conductivité hydraulique tombe sous un seuil de 10 -5 m/s. On a trouvé que le gravier a une durée de service au moins trois fois plus longue qu'une épaisseur équivalente de copeaux de pneus comprimés (à 150 kPa).

show abstract

Unusual calcite stromatolites and pisoids from a landfill leachate collection system

Cited by 10 publications

References 0 publications

Microbial dissolution of calcite at T=28°C and ambient pCO2

Microbial dissolution of calcite at T=28°C and ambient pCO2

Sustainable Practices for Landfill Design and Operation

Change in leachate chemistry and porosity as leachate permeates through tire shreds and gravel

Contact Info

Product

Resources

About