The effect of aging on element plant availability and bacterial counts of mixtures of wood ash and sewage sludge
This study investigated the chemical composition of a mixture of 70% wood ashes (a by-product of timber-industry) and 30% sewage sludge (% dry weight), immediately after preparation and after storage (42 days). The mixture had higher Mehlich 3 extractable Ca, Mg and K concentrations than either comp...
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| Lenguaje: | English |
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Universidad del Bío-Bío
2011
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| Acceso en línea: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2011000300006 |
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oai:scielo:S0718-221X20110003000062012-10-09The effect of aging on element plant availability and bacterial counts of mixtures of wood ash and sewage sludgePousada-Ferradás,YudaniSeoane-Labandeira,SocorroBlanco,MiguelNúñez-Delgado,Avelino Wood ash sewage sludge quicklime mixtures E. coli counts This study investigated the chemical composition of a mixture of 70% wood ashes (a by-product of timber-industry) and 30% sewage sludge (% dry weight), immediately after preparation and after storage (42 days). The mixture had higher Mehlich 3 extractable Ca, Mg and K concentrations than either component alone, and low plant-available heavy metal concentrations, both immediately after mixing and after storage for up to 6 weeks. The results support the view that mixtures of this type may be useful for liming and fertilizing, given their neutralizing capacity and phyto nutrient concentrations. Furthermore, we compared the survival of Escherichia coli in a wood ash and sewage sludge mixture with their survival in mixtures ofsewage sludge and two levels of quicklime. The time needed to eliminate most bacteria was 29 days in the ash-sludge combination, while nine days were required for one of the quicklime-sludge mixtures, and counts were minimal for the quicklime-sludge mixture with a pH>12.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.13 n.3 20112011-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2011000300006en10.4067/S0718-221X2011000300006 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
Wood ash sewage sludge quicklime mixtures E. coli counts |
| spellingShingle |
Wood ash sewage sludge quicklime mixtures E. coli counts Pousada-Ferradás,Yudani Seoane-Labandeira,Socorro Blanco,Miguel Núñez-Delgado,Avelino The effect of aging on element plant availability and bacterial counts of mixtures of wood ash and sewage sludge |
| description |
This study investigated the chemical composition of a mixture of 70% wood ashes (a by-product of timber-industry) and 30% sewage sludge (% dry weight), immediately after preparation and after storage (42 days). The mixture had higher Mehlich 3 extractable Ca, Mg and K concentrations than either component alone, and low plant-available heavy metal concentrations, both immediately after mixing and after storage for up to 6 weeks. The results support the view that mixtures of this type may be useful for liming and fertilizing, given their neutralizing capacity and phyto nutrient concentrations. Furthermore, we compared the survival of Escherichia coli in a wood ash and sewage sludge mixture with their survival in mixtures ofsewage sludge and two levels of quicklime. The time needed to eliminate most bacteria was 29 days in the ash-sludge combination, while nine days were required for one of the quicklime-sludge mixtures, and counts were minimal for the quicklime-sludge mixture with a pH>12. |
| author |
Pousada-Ferradás,Yudani Seoane-Labandeira,Socorro Blanco,Miguel Núñez-Delgado,Avelino |
| author_facet |
Pousada-Ferradás,Yudani Seoane-Labandeira,Socorro Blanco,Miguel Núñez-Delgado,Avelino |
| author_sort |
Pousada-Ferradás,Yudani |
| title |
The effect of aging on element plant availability and bacterial counts of mixtures of wood ash and sewage sludge |
| title_short |
The effect of aging on element plant availability and bacterial counts of mixtures of wood ash and sewage sludge |
| title_full |
The effect of aging on element plant availability and bacterial counts of mixtures of wood ash and sewage sludge |
| title_fullStr |
The effect of aging on element plant availability and bacterial counts of mixtures of wood ash and sewage sludge |
| title_full_unstemmed |
The effect of aging on element plant availability and bacterial counts of mixtures of wood ash and sewage sludge |
| title_sort |
effect of aging on element plant availability and bacterial counts of mixtures of wood ash and sewage sludge |
| publisher |
Universidad del Bío-Bío |
| publishDate |
2011 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2011000300006 |
| work_keys_str_mv |
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