Mesophilic biogas production from fruit and vegetable waste in a tubular digester

Bouallagui, Hassib; Cheikh, Ridha Ben; Marouani, L.; Hamdi, Moktar

doi:10.1016/s0960-8524(02)00097-4

Cited by 289 publications

(122 citation statements)

References 11 publications

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“…The C: N ratio was found to vary in the range of 27.53 to 29.03. The range falls in the optimum C: N ratio of 25 to 30 for biomethanation reported by Bouallagui et al, (2003). …”

Section: Resultsmentioning

confidence: 74%

Characterization and Batch Anaerobic Digestion Study of Banana Wastes

Divyabharathi¹,

Angeeswaran²,

Jagadeeshkumar³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

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“…The C: N ratio was found to vary in the range of 27.53 to 29.03. The range falls in the optimum C: N ratio of 25 to 30 for biomethanation reported by Bouallagui et al, (2003). …”

Section: Resultsmentioning

confidence: 74%

Characterization and Batch Anaerobic Digestion Study of Banana Wastes

Divyabharathi¹,

Angeeswaran²,

Jagadeeshkumar³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

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“…We assume that Amyris has the flexibility to improve input efficiency to i = 1 25 by reducing its capacity efficiency to k = 0 9. This is "in the ballpark" but smaller than the magnitude of flexibility reported for other industrial processes that rely on metabolism by microorganisms (Bouallagui et al 2003). Nevertheless, the value of that flexibility is large in magnitude.…”

Section: Flexibility In Input Efficiency Vs Capacity Efficiencymentioning

confidence: 71%

On the Value of Input Efficiency, Capacity Efficiency, and the Flexibility to Rebalance Them

Plambeck

Taylor

2013

M&SOM

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A common characteristic of basic material manufacturers (which account for 85% of all industrial energy use) and of cleantech manufacturers is that they are price takers in their input and output markets. Variability in those prices has implications for how much a manufacturer should invest in three fundamental types of process improvement. Input price variability reduces the value of improving input efficiency (output produced per unit input) but increases that of capacity efficiency (the rate at which a production facility can convert input into output). Output price variability increases the value of capacity efficiency, but it increases the value of input efficiency if and only if the expected margin is small. Moreover, as the expected input cost rises, the value of input efficiency decreases. A third type of process improvement is to develop flexibility in input efficiency versus capacity efficiency (the ability to respond to a rise in input cost or fall in output price by increasing input-efficiency at the expense of capacity efficiency). The value of this flexibility decreases with variability in input and output prices if and only if the expected margin is thin. Together, these results suggest that a carbon tax or cap-and-trade system may reduce investment by basic material manufacturers in improving energy efficiency.

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“…So, hybrid cake with 80.40% humidity content had only slightly higher percentage of moisture compared to 80.07% humidity content of variety cakes. It has been reported that the highest methane production rates occur at the humidity level of 60-80% (Bouallagui et al, 2003). Therefore it can be concluded that the investigated substrates have moisture levels almost optimal for biogas production.…”

Section: Rapeseed Cake As Substrate In Anaerobic Digestionmentioning

confidence: 80%

Reuse of rapeseed by-products from biodiesel production

Krička

Matin

Voća

et al. 2015

Span. j. agric. res.

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The objective of this paper is to investigate usability of rapeseed cake from biodiesel fuel production as an energy source. For this research, rapeseed was grown at the research site of the Faculty of Agriculture in Zagreb, Croatia. The investigated rapeseed cake, residue from cold pressing, was divided in two groups of samples. The first group was a mix of three varieties (Bristol, Express and Navajo), while the other group consisted of three hybrids (Artus, Baldur, Titan). The utilization of rapeseed cake for energy via two routes was evaluated; namely, utilization of rapeseed cake as (1) solid biofuel (pellets) with addition of 3% of glycerol, and (2) as substrate in anaerobic digestion (AD). In investigation of cake as solid fuel, proximate (moisture content, ash content, fixed carbon and volatile matter), ultimate (content of carbon, sulphur, hydrogen, oxygen and nitrogen) and physical and calometry analyses (abrasion, diameter, length, density, higher and lower heating value were carried out. As for its use in AD, production of biogas during 40 days was monitored with a view of assessing the use of digested residue as fertilizer in agricultural production. Both groups of digested residues were analysed (pH, electroconductivity, moisture content, ash content, content of nitrogen and carbon, C/N ratio, content of P 2 O 5 , K 2 O, Ca, Mg, Na). The analysis indicated that the investigated raw material is usable as solid and gas biofuel, and digested residue as fertilizer in ecological agriculture. The two groups of samples analysed here did not show significant differences. Additional keywords: rapeseed cake; Brassica napus; pressing; pelletizing; biogas production; proximate and ultimate analysis Abbreviations used: AD (anaerobic digestion); D (diameter); EC (electroconductivity); EU (European Union); HHV (higher heating value); L (lenght); LHV (lower heating value) Citation: Krička, T.; Jurišić, V.; Bilandžija, N. (2015). Reuse of rapeseed by-products from biodiesel production. Spanish Journal of Agricultural Research, Volume 13, Issue 1, e02-007, 9 pages. http://dx

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Mesophilic biogas production from fruit and vegetable waste in a tubular digester

Cited by 289 publications

References 11 publications

Characterization and Batch Anaerobic Digestion Study of Banana Wastes

Characterization and Batch Anaerobic Digestion Study of Banana Wastes

On the Value of Input Efficiency, Capacity Efficiency, and the Flexibility to Rebalance Them

Reuse of rapeseed by-products from biodiesel production

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