Effect of propionate toxicity on methanogenesis of night soil at phychrophilic temperature

Dhaked, Ram Kumar; Waghmare, Chandra Kant; Alam, Syed Imteyaz; Kamboj, Dev Vrat; Singh, Lokendra

doi:10.1016/s0960-8524(02)00227-4

Cited by 30 publications

(17 citation statements)

References 10 publications

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“…The maximum caproate and propionate levels were far below reported inhibitory concentrations of tens of g-COD/L for methanogenic archaea (Hajarnis and Ranade, 1994;Jarrell et al, 1987). Methanogenesis has also been observed in anaerobic systems with propionate concentrations above 4.15 g COD/L (Dhaked et al, 2003;Pullammanappallil et al, 2001). The pH, however, was at the lower limit of the reported optimum pH range for most aceticlastic methanogens (Steinhaus et al, 2007) and continued to decrease with further accumulation of VFAs.…”

Section: Acetate Uptakementioning

confidence: 84%

Inhibitory effects of the macrolide antimicrobial tylosin on anaerobic treatment

Shimada

Zilles

Morgenroth

et al. 2008

Biotech & Bioengineering

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A laboratory-scale anaerobic sequencing batch reactor (ASBR) was operated using a glucose-based synthetic wastewater to study the effects of tylosin, a macrolide antimicrobial commonly used in swine production, on treatment performance. The experimental period was divided into three consecutive phases with different influent tylosin concentrations (0, 1.67, and 167 mg/L). The addition of 1.67 mg/L tylosin to the reactor had negligible effects on the overall treatment performance, that is, total methane production and effluent chemical oxygen demand did not change significantly (P < 0.05), yet analyses of individual ASBR cycles revealed a decrease in the rates of both methane production and propionate uptake after tylosin was added. The addition of 167 mg/L tylosin to the reactor resulted in a gradual decrease in methane production and the accumulation of propionate and acetate. Subsequent inhibition of methanogenesis was attributed to a decrease in the pH of the reactor. After the addition of 167 mg/L tylosin to the reactor, an initial decrease in the rate of glucose uptake during the ASBR cycle followed by a gradual recovery was observed. In batch tests, the specific biogas production with the substrate butyrate was completely inhibited in the presence of tylosin. This study indicated that tylosin inhibited propionate- and butyrate-oxidizing syntrophic bacteria and fermenting bacteria resulting in unfavorable effects on methanogenesis.

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Section: Acetate Uptakementioning

confidence: 84%

Inhibitory effects of the macrolide antimicrobial tylosin on anaerobic treatment

Shimada

Zilles

Morgenroth

et al. 2008

Biotech & Bioengineering

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“…Thus, as SRB lower in a mixed-substrate influent effectively the acetate concentra-tion, the growth rate of methanogens is reduced and easily becomes slower than the dilution rate of the reactor. Propionate has shown to decrease the methanogenic activity (Barredo and Evison 1991;Dhaked et al 2003). Propionate is, however, fed at a rate slower than the maximal uptake rate, and therefore, in the reactor, the concentration is always low; inhibition of methanogens by the propionate is therefore in this particular situation not likely.…”

Section: Srb and Methanogens Competition For Mixed Substratementioning

confidence: 99%

Influence of acetate and propionate on sulphate-reducing bacteria activity

et al. 2014

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“…The pH value had a positive effect, probably because of (i) the reduced toxicity of anionic VFAs at neutral pH values compared to the unionized species at acidic pH (Dhaked et al, 2003) and (ii) the optimal pH for growth of several methanogens being inherently around neutrality (Boopathy and Kulpa, 1994;Lai et al, 2004).…”

Section: Pls Regression Analysis For Manure Methanogenic Activitymentioning

confidence: 99%

Physico-chemical characteristics and methanogen communities in swine and dairy manure storage tanks: Spatio-temporal variations and impact on methanogenic activity

et al. 2013

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Greenhouse gas emissions represent a major environmental problem associated with the management of manure from the livestock industry. Methane is the primary GHG emitted during manure outdoor storage. In this paper, the variability of two swine and two dairy manure storage tanks was surveyed, in terms of physico-chemical and microbiological parameters. The impact of the inter-tank and spatio-temporal variations of these parameters on the methanogenic activity of manure was ascertained. A Partial Least Square regression was carried out, which demonstrated that physico-chemical as well as microbiological parameters had a major influence on the methanogenic activity. Among the 19 parameters included in the regression, the concentrations of VFAs had the strongest negative influence on the methane emission rate of manure, resulting from their well-known inhibitory effect. The relative abundance of two amplicons in archaeal fingerprints was found to positively influence the methanogenic activity, suggesting that Methanoculleus spp. and possibly Methanosarcina spp. are major contributors to methanogenesis in storage tanks. This work gave insights into the mechanisms, which drive methanogenesis in swine and dairy manure storage tanks.

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Effect of propionate toxicity on methanogenesis of night soil at phychrophilic temperature

Cited by 30 publications

References 10 publications

Inhibitory effects of the macrolide antimicrobial tylosin on anaerobic treatment

Inhibitory effects of the macrolide antimicrobial tylosin on anaerobic treatment

Influence of acetate and propionate on sulphate-reducing bacteria activity

Physico-chemical characteristics and methanogen communities in swine and dairy manure storage tanks: Spatio-temporal variations and impact on methanogenic activity

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