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231224s2016 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2016.06.037
|2 doi
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|a pubmed25n0874.xml
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|a (DE-627)NLM262294540
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|a (NLM)27402564
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|a (PII)S0956-053X(16)30342-7
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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1 |
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|a Romero-Güiza, M S
|e verfasserin
|4 aut
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|a The effect of magnesium as activator and inhibitor of anaerobic digestion
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|c 2016
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 14.04.2017
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|a Date Revised 14.04.2017
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2016 Elsevier Ltd. All rights reserved.
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|a Anaerobic digestion stands as a key technology in the emerging green energy economy. Mg(2+) has been identified as an important element to improve digesters methane production; however the inhibition risk that high Mg(2+) concentrations can cause to the AD process must also be considered when dosing Mg reagents and wastes containing Mg(2+). Despite its importance, Mg(2+) stimulation and inhibition mechanisms as well as threshold values are scarce in the literature. This research paper investigates the impact (stimulation and inhibition) of Mg(2+) on pig manure anaerobic digestion. Mathematical modelling was used to better understand the interaction between substrate, inoculum and magnesium, where Mg(2+) inhibition was modelled by a n-component non-competitive inhibition function. Modelling was done on absolute curves rather than specific methane productions curves (new approach) to account for the lower background methane production of the inoculum as the Mg(2+) concentration increased. Results showed that no stimulation or inhibition occurred between 40 (native concentration) and 400mgMg(2+)L(-1), while minor and major inhibition were observed at 750 and 1000mgMg(2+)L(-1), and at 2000 and 4000mgMg(2+)L(-1), respectively. Mg(2+) half maximal inhibition concentration was estimated at 2140mgMg(2+)L(-1) with an inhibition order of 2. The latter indicates that Mg(2+) inhibition is a progressive rather than a steep inhibition mechanism
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|a Journal Article
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|a Activation
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|a Anaerobic digestion
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|a Inhibition
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|a Magnesium
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|a Modelling
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|a Toxicity
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|a Biofuels
|2 NLM
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|a Manure
|2 NLM
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|a Magnesium
|2 NLM
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|a I38ZP9992A
|2 NLM
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| 650 |
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|a Methane
|2 NLM
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| 650 |
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|a OP0UW79H66
|2 NLM
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| 700 |
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|a Mata-Alvarez, J
|e verfasserin
|4 aut
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|a Chimenos, J M
|e verfasserin
|4 aut
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| 700 |
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|a Astals, S
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Waste management (New York, N.Y.)
|d 1999
|g 56(2016) vom: 01. Okt., Seite 137-42
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnns
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| 773 |
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|g volume:56
|g year:2016
|g day:01
|g month:10
|g pages:137-42
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|u http://dx.doi.org/10.1016/j.wasman.2016.06.037
|3 Volltext
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