Application of natural zeolites in anaerobic digestion processes: A review
Author
dc.contributor.author
Montalvo, Silvio
Author
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Guerrero, Lorna
es_CL
Author
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Borja, Rafael
es_CL
Author
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Sánchez, Enrique
es_CL
Author
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Milán, Zhenia
es_CL
Author
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Cortés, Isel
es_CL
Author
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Rubia, M. Ángeles de la
es_CL
Admission date
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2014-01-07T15:54:26Z
Available date
dc.date.available
2014-01-07T15:54:26Z
Publication date
dc.date.issued
2012
Cita de ítem
dc.identifier.citation
Applied Clay Science 58 (2012) 125–133
en_US
Identifier
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DOI:10.1016/j.clay.2012.01.013
Identifier
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https://repositorio.uchile.cl/handle/2250/121699
General note
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Artículo de publicación ISI
en_US
Abstract
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This paper reviews the most relevant uses and applications of zeolites in anaerobic digestion processes. The
feasibility of using natural zeolites as support media for the immobilization of microorganisms in different
high-rate reactor configurations (fixed bed, fluidized bed, etc.) is also reviewed. Zeolite, with its favorable
characteristics for microorganism adhesion, has also been widely used as an ion exchanger for the removal
of ammonium in anaerobic digestion due to the presence of Na+, Ca2+ and Mg2+ cations in its crystalline
structure. This property is also useful for improving the anaerobic process performances in the treatment
of wastewaters with high concentrations of nitrogen compounds, such as cattle, pig and chicken wastes, as
it prevents process inhibition. The influence of zeolite particle size and doses in batch mesophilic and
thermophilic processes when referring to synthetic or different wastewaters is also reviewed. Finally, the
role of zeolite in granulation processes, in anaerobic oxidation processes (Anammox) for promoting the
retention of the biomass involved (given its low growth rate), and in hybrid and sequencing reactors such
as the moving bed biofilm reactors (MBBR) are also discussed.