Biogas production from olive pomace

Tekin, Ali; Dalgıç, Ali Çoşkun

doi:10.1016/s0921-3449(00)00067-7

Cited by 118 publications

(55 citation statements)

References 22 publications

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“…The mentioned authors obtained the highest production of biogas on the 20 th day of the process. The production results published by Tekin & Dalgiҫ (2000) are fully consistent with the data quoted in this paper. This is different from Petersson et al (2007) who obtained significantly lower production due to the acclimatization of microorganisms.…”

Section: Rapeseed Cake As Substrate In Anaerobic Digestionsupporting

confidence: 89%

“…Also, productivity was continuous for about 36 days from the start of the process, when a slight decline followed. Comparing the analysed production of biogas on a daily basis with the data obtained by Tekin & Dalgiҫ (2000) and Petersson et al (2007) during AD of olive cake and rapeseed cake, the traceability of the data was observed. The mentioned authors obtained the highest production of biogas on the 20 th day of the process.…”

Section: Rapeseed Cake As Substrate In Anaerobic Digestionsupporting

confidence: 51%

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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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Section: Rapeseed Cake As Substrate In Anaerobic Digestionsupporting

confidence: 89%

Section: Rapeseed Cake As Substrate In Anaerobic Digestionsupporting

confidence: 51%

Reuse of rapeseed by-products from biodiesel production

Krička

Matin

Voća

et al. 2015

Span. j. agric. res.

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“…Some solutions already proposed for the management of the pomace waste are for instance adsorption of heavy metals (Baccar et al, 2009), dyes (Akar et al, 2009) and phenols (Stasinakis et al, 2009) as well as composting (Haddadin et al, 2009) or biogas production (Tekin et al, 2000), among others.…”

Section: Introductionmentioning

confidence: 99%

Recovery of iron after Fenton-like secondary treatment of olive mill wastewater by nano-filtration and low-pressure reverse osmosis membranes

2016

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SUMMARY:In this work, the performances of novel nano-filtration (NF) and low-pressure reverse osmosis (RO) polymeric membranes were examined with the aim of recovering the iron used as catalyst in former secondary treatment based on the Fenton-like advanced oxidation of olive mill wastewater (OMW). Results highlight that both membranes exhibit a good performance towards the rejection of iron (99.1% for the NF membrane vs. 100% for the low-pressure RO membrane) in the secondary-treated OMW effluent, thus permitting the recovery of iron in the concentrate stream in order to recycle it back into the oxidation reactor to reduce catalyst consumption. Finally, the permeate streams could be re-used for irrigation. Major productivity was observed by the selected NF membrane, about 47.4 L/hm 2 upon 9 bar, whereas 30.9 L/hm 2 could be yielded with the RO membrane under an operating pressure of 8 bar. Moreover, a sensibly lower fouling index was measured on the NF membrane (0.0072 in contrast with 0.065), which ensures major steady-state performance on this membrane and a longer service lifetime. This also results in lower required membrane area and membrane plant over dimension (4 modules in case of RO operation whereas only 2 modules for NF). KEYWORDS: Iron recovery; Nano-filtration; Olive mill wastewater; Reverse osmosis; Wastewater treatment RESUMEN:Recuperación de hierro tras tratamiento secundario tipo Fenton de agua residual de la industria oleícola por membranas de nanofiltración y ósmosis inversa de baja presión. En este trabajo, se examinó el rendimiento de membranas modernas de nanofiltración (NF) y ósmosis inversa (OI) poliméricas con el objetivo de recuperar el hierro utilizado como catalizador en un tratamiento secundario previo de agua residual oleícola (OMW) basado en oxidación avanzada tipo Fenton. Los resultados ponen de relieven que ambas membranas exhiben buen rendimiento en cuanto al rechazo de hierro (99.1 % para la membrana de NF vs. 100 % para la membrana de OI de bajas presiones) en el efluente oleícola tras tratamiento secundario, permitiendo en consecuencia la recuperación de hierro en la corriente de concentrado para su recirculación de nuevo al reactor de oxidación para reducir el consumo de catalizador. Finalmente, las corrientes de permeado podrían ser reutilizadas para riego. Por otro lado, la productividad asegurada por la membrana de NF seleccionada fue mayor, en torno a 47.4 L/hm 2 a 9 bar, mientras que 30.9 L/hm 2 pudieron ser producidos por la membrana de OI bajo una presión operativa de 8 bar. Además, un índice de fouling sensiblemente menor fue medido en la membrana de NF (0.0072 en contraste con 0.065), lo que asegura mayor rendimiento en estado estacionario para esta membrana, y mayor vida de servicio. Además, ello también resultó en una menor área de membrana y sobredimensionamiento de la planta requeridas (4 módulos en caso de OI mientras que sólo para NF).

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“…It should therefore in future co-exist with traditional energy sources, especially with the problem of global warming observed in recent years (global warming) [3], [4].…”

Section: Introductionmentioning

confidence: 99%

Experimental Factors Affecting the Production of Biogas during Anaerobic Digestion of Biodegradable Waste

Laskri¹,

Hamdaoui²,

Nedjah³

2015

IJESD

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Abstract-Biogas production by anaerobic digestion from biodegradable organic waste is increasingly seen as a viable renewable energy source. However, the efficiency of anaerobic digestion process is limited by a number of factors affecting mainly slow hydrolysis of complex organic matter.Operating conditions and digester power supply are among the main factors affecting the biogas production. The operating conditions are pH and temperature. However, disturbances caused by the power supply include the composition of organic waste, the concentration of substrate digested and toxic compounds, digestion inhibitors which are mainly volatile fatty acids (AGV) and ammonia (NH 4 + ). Throughout this experimental study we tried to establish the relationship between the volume of biogas formed with the pH, temperature, AGV, and the production of NH 4 + . Index Terms-Anaerobic digestion, biogas, NH 4 + , AGV.

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Biogas production from olive pomace

Cited by 118 publications

References 22 publications

Reuse of rapeseed by-products from biodiesel production

Reuse of rapeseed by-products from biodiesel production

Recovery of iron after Fenton-like secondary treatment of olive mill wastewater by nano-filtration and low-pressure reverse osmosis membranes

Experimental Factors Affecting the Production of Biogas during Anaerobic Digestion of Biodegradable Waste

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