Methanogenic toxicity of bark tannins and the anaerobic biodegradability of water soluble bark matter

J. A. Field; M. J.H. Leyendekers; R. Sierra Alvarez; G. Lettinga; L. H.A. Habets

doi:10.2166/wst.1988.0026

Methanogenic toxicity of bark tannins and the anaerobic biodegradability of water soluble bark matter

J. A. Field, M. J.H. Leyendekers, R. Sierra Alvarez, G. Lettinga, L. H.A. Habets

Research output: Contribution to journal › Conference article › peer-review

100 Scopus citations

Abstract

The 50 percent inhibitory concentration of bark tannins averaged approximately 600 mg COD L^-1. The toxicity caused by the resin fraction of bark was demonstrated not to be very important to the methanogenic toxicity of aqueous extracts. While tree resin compounds were found to be very toxic to methanogenic bacteria, the solubility of the resin fraction was very poor due to the low natural pH during the aqueous extraction. Additionally, those compounds aqueous extracted from tree resin at the natural pH were not as toxic as all the tree resin compounds solubilized by alkali and supplied at similar concentrations. Anaerobic biodegradability results indicated that 30 to 50 percent of the bark water soluble COD can be acidified to methanogenic substrates during short term digestion. Additional study results are discussed.

Original language	English (US)
Pages (from-to)	219-240
Number of pages	22
Journal	Water Science and Technology
Volume	20
Issue number	1
DOIs	https://doi.org/10.2166/wst.1988.0026
State	Published - 1988
Externally published	Yes
Event	Forest Industry Wastewaters: Biological Treatment - Tampere, Finl Duration: Jun 9 1987 → Jun 12 1987

ASJC Scopus subject areas

Environmental Engineering
Water Science and Technology

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10.2166/wst.1988.0026

Cite this

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title = "Methanogenic toxicity of bark tannins and the anaerobic biodegradability of water soluble bark matter",

abstract = "The 50 percent inhibitory concentration of bark tannins averaged approximately 600 mg COD L-1. The toxicity caused by the resin fraction of bark was demonstrated not to be very important to the methanogenic toxicity of aqueous extracts. While tree resin compounds were found to be very toxic to methanogenic bacteria, the solubility of the resin fraction was very poor due to the low natural pH during the aqueous extraction. Additionally, those compounds aqueous extracted from tree resin at the natural pH were not as toxic as all the tree resin compounds solubilized by alkali and supplied at similar concentrations. Anaerobic biodegradability results indicated that 30 to 50 percent of the bark water soluble COD can be acidified to methanogenic substrates during short term digestion. Additional study results are discussed.",

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T1 - Methanogenic toxicity of bark tannins and the anaerobic biodegradability of water soluble bark matter

AU - Field, J. A.

AU - Leyendekers, M. J.H.

AU - Sierra Alvarez, R.

AU - Lettinga, G.

AU - Habets, L. H.A.

PY - 1988

Y1 - 1988

N2 - The 50 percent inhibitory concentration of bark tannins averaged approximately 600 mg COD L-1. The toxicity caused by the resin fraction of bark was demonstrated not to be very important to the methanogenic toxicity of aqueous extracts. While tree resin compounds were found to be very toxic to methanogenic bacteria, the solubility of the resin fraction was very poor due to the low natural pH during the aqueous extraction. Additionally, those compounds aqueous extracted from tree resin at the natural pH were not as toxic as all the tree resin compounds solubilized by alkali and supplied at similar concentrations. Anaerobic biodegradability results indicated that 30 to 50 percent of the bark water soluble COD can be acidified to methanogenic substrates during short term digestion. Additional study results are discussed.

AB - The 50 percent inhibitory concentration of bark tannins averaged approximately 600 mg COD L-1. The toxicity caused by the resin fraction of bark was demonstrated not to be very important to the methanogenic toxicity of aqueous extracts. While tree resin compounds were found to be very toxic to methanogenic bacteria, the solubility of the resin fraction was very poor due to the low natural pH during the aqueous extraction. Additionally, those compounds aqueous extracted from tree resin at the natural pH were not as toxic as all the tree resin compounds solubilized by alkali and supplied at similar concentrations. Anaerobic biodegradability results indicated that 30 to 50 percent of the bark water soluble COD can be acidified to methanogenic substrates during short term digestion. Additional study results are discussed.

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T2 - Forest Industry Wastewaters: Biological Treatment

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Methanogenic toxicity of bark tannins and the anaerobic biodegradability of water soluble bark matter

Abstract

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