Anaerobic digestion of the Barcelona central food market organic wastes: Experimental study

Mata‐Alvarez, J.; Llabrès, P.; Cecchi, Francesca; Pavan, Paolo

doi:10.1016/0960-8524(92)90054-2

Cited by 120 publications

(35 citation statements)

References 9 publications

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“…The kinetic model has been aptly used in many studies, notably in investigations on anaerobic digestion of high strength wastes (Mata-Alvarez et al 1992;Sales et al 2000).…”

Section: Resultsmentioning

confidence: 99%

Kinetics of Biogas Production from Banana Stem Waste

Zainol¹

2012

Biogas

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“…The kinetic model has been aptly used in many studies, notably in investigations on anaerobic digestion of high strength wastes (Mata-Alvarez et al 1992;Sales et al 2000).…”

Section: Resultsmentioning

confidence: 99%

Kinetics of Biogas Production from Banana Stem Waste

Zainol¹

2012

Biogas

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“…Digestion was in mesophilic conditions at organic loading rates (OLR) between 0.80-1.60 g volatile solids (VS) L -1 day -1 with a 32-day hydraulic retention time (HRT), and produced average biogas yields of 0.30-0.58 L g -1 VS. Digestion of some of these materials showed instability, and in these cases remedial measures were introduced which included alkali addition, feed interruption and mixing with a nitrogen-rich supplement. In a similar study, Mata-Alvarez et al [5] reported on the performance of a mesophilic single-stage stirred digester for the treatment of a mixture of fruit and vegetable wastes from a large food market, and found the maximum OLR that could be achieved was <3 g VS L -1 day -1 . Lane [6] also reported from experiments using completely mixed digesters with a FVW input that a loading above 4 g VS L -1 day -1 caused a fall in pH, lower gas yield and increased CO 2 content.…”

Section: Introductionmentioning

confidence: 99%

Strategies for stable anaerobic digestion of vegetable waste

2012

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International trade and the market demand for pre-prepared agricultural produce is not only increasing the total quantity of waste agricultural biomass but also centralising its availability, making it potentially useful for energy production. The current work considers the suitability of vegetable trimmings and rejects from high-value produce air-freighted between Africa and Europe as a feedstock for anaerobic digestion. The physical and chemical characteristics of a typical mixed vegetable waste of this type were determined and the theoretical energy yield predicted and compared to experimentally-determined calorific values, and to the energy recovered through a batch biochemical methane potential test. A semi-continuous digestion trial was then carried out with daily feed additions at different organic loading rates (OLR). At an OLR of 2 g VS L -1 day -1 the substrate gave a methane yield of 0.345 L g -1 VS added with VS destruction 81.3%, and showed that 76.2% of the measured calorific value of the waste could be reclaimed as methane. This was in good agreement with the estimated energy recovery of 68.6% based on reaction stoichiometry, and was 99% of the biochemical methane potential (BMP). Higher loading rates reduced the specific methane yield and energy conversion efficiency, and led to a drop in digester pH which could not be effectively controlled by alkali additions. To maintain digester stability it was necessary to supplement with additional trace elements including tungsten, which allowed loading rates up to 4 g VS L -1 day -1 to be achieved. Stability was also improved by addition of yeast extract (YE), but the higher gas yield obtained was as a result of the contribution made by the YE and no synergy was shown. Co-digestion using card packaging and cattle slurry as co-substrates also proved to be an effective means of restoring and maintaining stable operating conditions.

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“…Food waste (FW) has similar characteristic with KW, and it was reported that the individual anaerobic digestion of FW failed at the OLR 3,0 g VS.L -1 .d -1 due to acid accumulation [3]. Moreover, the stability of anaerobic digestion process would become poor when high OLR was applied [2,4]. These problems may potential limit the application of anaerobic digestion for treating such wastes in industrial scale.…”

Section: Introductionmentioning

confidence: 99%

Lab-Scale Study on Co-Digestion of Kitchen Waste, Sludge and Sewage

Tran¹

2018

JST

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Anaerobic digestion is widely used for biodegradable solid organic wastes in order to recover bio-energy in the form of biogas. Some previous studies presented that co-digestion of various substrates can improve biogas yields as well as enhanceperformance of organic wastes digestion, in comparison with digestion of sole solid waste. This study aimed to evaluate the performance of anaerobic mono-digestion and anaerobic co-digestion of the following mixtures: (a) sole kitchen waste (KW), (b) KW and sewage (SW), (c) sole sludge (SL)and (d) KW and SL. This study was conductedby four lab-scale anaerobic complete mixing reactors (numbered MH1 -MH4) in 4,5 liters working volume atorganic loading rate (OLR) 2,0 g(VS).L -1 .d -1 . The KW was collected from canteen B4 and SW was collected from effluent from septic tank C6 Building in Ho Chi Minh University of Technology (HCMUT). The results show that the reactor of sole KW obtained average total chemical oxygen demand (tCOD), soluble chemical oxygen demand (sCOD), total solid (TS), volatile solid (VS), total phosphorus (TP) and total Kjeldahl nitrogen (TKN) of 62 %, 62 %, 71 %, 72 %, 73 % and 45 %, respectively, whereas reactor of KW and SW co-digestion had were tCOD, sCOD, TS, VS, TP and TKN removal of 73 %, 78 %, 75 %, 79 %, 59 % and 57 %, respectively. Thus co-digestion of KW and SW revealed an efficient enhancement of digestion, instead of sole KW digestion. Similarly, TS (74 %) and VS removals (75 %) of co-digesting mixtures of SL and KW were higher than those of sole SL digestion (67 %). Furthermore, co-digestion of SL and KW obtained better performance in tCOD and sCOD removals (70 % and 76 %, respectively).

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Anaerobic digestion of the Barcelona central food market organic wastes: Experimental study

Cited by 120 publications

References 9 publications

Kinetics of Biogas Production from Banana Stem Waste

Kinetics of Biogas Production from Banana Stem Waste

Strategies for stable anaerobic digestion of vegetable waste

Lab-Scale Study on Co-Digestion of Kitchen Waste, Sludge and Sewage

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