Sodium inhibition in the anaerobic digestion process: Antagonism and adaptation phenomena

Feijoo, Gumersindo; Soto, M.; Méndez, R.; Lema, Juan M.

doi:10.1016/0141-0229(94)00011-f

Cited by 235 publications

(134 citation statements)

References 16 publications

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“…It may have been due to the addition of ferrous, calcium and magnesium salts present in the trace metal solution. Similar observations have been reported by Feijoo et al (1995). However from the 34th day onwards, once again there was decrease in COD removal.…”

Section: Resultssupporting

confidence: 91%

“…But due to the decrease in COD removal, it was thought that the sodium (2.65 g/l) and sulfates (0.1 g/l) salts present in the simulated textile e uent were inhibiting the methanogens, therefore trace metal solution at the rate of 2 ml/l of feed was added from 16th day onwards for two days and then continued with 1 ml/l in the feed. Similar results have been reported by Feijoo et al (1995), where sodium concentrations of 3±16 g/l caused 50% inhibition of methanogenesis in the absence of any nutrients or any other cations. De Baere et al (1984) have reported that a sodium concentration in the range of 3.5±5.5 g/l causes moderate inhibition.…”

Section: Resultssupporting

confidence: 90%

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Anaerobic decolorisation of simulated textile wastewater containing azo dyes

Basavaraju

Chaudhari

2002

Bioresource Technology

278

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Section: Resultssupporting

confidence: 91%

Section: Resultssupporting

confidence: 90%

Anaerobic decolorisation of simulated textile wastewater containing azo dyes

Basavaraju

Chaudhari

2002

Bioresource Technology

278

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“…The main ions in sea water (Na + , K + , Mg + and Ca ++ ) are required in moderate concentrations for microbial growth and can have both an inhibitory and stimulating effect [25], but at sea water salinity adaption may be required before fullscale anaerobic digestion of marine material is considered [54,55]. Thus it is likely that simple acclimatisation protocols will have to be developed to generate inoculum for largescale commercial operation, in order to avoid the need for expensive washing procedures.…”

Section: Discussionmentioning

confidence: 99%

Comparative testing of energy yields from micro-algal biomass cultures processed via anaerobic digestion

2016

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. Comparative testing of energy yields from microalgal biomass cultures processed via anaerobic digestion. Renewable Energy, 87,[744][745][746][747][748][749][750][751][752][753] http://www.sciencedirect.com/science/article/pii/S0960148115304286 doi:10.1016/j.renene.2015.11.009 __________________________________________________________________________________ Comparative testing of energy yields from micro-algal biomass cultures processed via anaerobic digestion Keiron P. Roberts, Sonia Heaven, Charles J. Banks Faculty of Engineering and the Environment, University of Southampton, Southampton, SO17 1BJ, UK (Email K.P. Roberts@soton.ac.uk, S.Heaven@soton.ac.uk, C.J.Banks@soton.ac.uk) Abstract Although digestion of micro-algal biomass was first suggested in the 1950s, there is still only limited information available for assessment of its potential. The research examined six laboratory-grown marine and freshwater micro-algae and two samples from large-scale cultivation systems. Biomass composition was characterised to allow prediction of potentially available energy using the Buswell equation, with calorific values as a benchmark for energy recovery. Biochemical methane potential tests were analysed using a pseudo-parallel first order model to estimate kinetic coefficients and proportions of readily-biodegradable carbon. Chemical composition was used to assess potential interferences from nitrogen and sulphur components. Volatile solids (VS) conversion to methane showed a broad range, from 0.161-0.435 L CH 4 g -1 VS; while conversion of calorific value ranged from 26.4-79.2%. Methane productivity of laboratory-grown species was estimated from growth rate, measured by changes in optical density in batch culture, and biomass yield based on an assumed harvested solids content. Volumetric productivity was 0.04-0.08 L CH 4 L -1 culture day -1 , the highest from the marine species Thalassiosira pseudonana. Estimated methane productivity of the large-scale raceway was lower at 0.01 L CH 4 L -1 day -1 . The approach used offers a means of screening for methane productivity per unit of cultivation under standard conditions.

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“…7 300 mg·ℓ -1 ) accumulating in the reactor. It has been reported that sodium, at low concentrations, is essential for methanogens, probably because of its role in the formation of adenosine triphosphate (ATP), the oxidation of NADH (Feijoo et al, 1995) or in the chemi-osmotic coupling mechanism (Rinzema et al, 1988). It has also been shown that the presence of high sodium concentrations (10 000 to 25 000 mg·ℓ ) is inhibitory to anaerobic wastewater treatment in that methanogenesis is inhibited to varying degrees (Feijoo et al, 1995).…”

Section: Optimum Performancementioning

confidence: 99%

UASB treatment of a highly alkaline fruit-cannery lye-peeling wastewater

Sigge¹,

Tj²

2009

WSA

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Anaerobic treatment of a highly alkaline fruit-cannery lye-peeling wastewater was investigated, using an upflow anaerobic sludge blanket (UASB) reactor. Only a short initialisation period was required before COD reduction and OLR had stabilised at 85 to 90% and 2.40 kgCOD·m , the COD reduction remained between 85 and 93% and biogas production peaked at 4.1 ℓ·d -1 (63% methane). COD and reactor pH started to decrease after 111 d. Decreases in gas production were observed by Day 102, decreasing to 2. ) within the reactor biomass, leading to inhibition of methanogenesis.

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Sodium inhibition in the anaerobic digestion process: Antagonism and adaptation phenomena

Cited by 235 publications

References 16 publications

Anaerobic decolorisation of simulated textile wastewater containing azo dyes

Anaerobic decolorisation of simulated textile wastewater containing azo dyes

Comparative testing of energy yields from micro-algal biomass cultures processed via anaerobic digestion

UASB treatment of a highly alkaline fruit-cannery lye-peeling wastewater

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