Biogas from anaerobic digestion of fruit and vegetable wastes: Experimental results on pilot-scale and preliminary performance evaluation of a full-scale power plant

2014 ◽  
Vol 77 ◽  
pp. 22-30 ◽  
Author(s):  
Efisio Antonio Scano ◽  
Carla Asquer ◽  
Agata Pistis ◽  
Luca Ortu ◽  
Valeria Demontis ◽  
...  
2008 ◽  
Vol 63 (3) ◽  
pp. 782-790 ◽  
Author(s):  
Jiang Wu ◽  
Yan Cao ◽  
Weiguo Pan ◽  
Minqiang Shen ◽  
Jianxing Ren ◽  
...  

2014 ◽  
Vol 535 ◽  
pp. 572-576 ◽  
Author(s):  
Hui Mu ◽  
Yu Xiao Zhao ◽  
Dong Liang Hua ◽  
Xiao Dong Zhang ◽  
Yan Li ◽  
...  

The characteristics and the utilization situation of fruit and vegetable wastes (FVW) were analyzed, and a detailed research conducted on FVW treatment process techniques of single-phase and two-phase anaerobic digestion were summarized. Then the advantages and disadvantages between these two processing techniques are reviewed, respectively. Furthermore, future trends in research and development of FVW treatment process technology have also been briefly discussed, which would provide some new ideas for processing FVW.


1993 ◽  
Vol 5 (6) ◽  
pp. 481-488 ◽  
Author(s):  
J. Math-Alvarez ◽  
A. Mtz.-Viturtia ◽  
P. Llabrés-Luengo ◽  
F. Cecchi

1989 ◽  
Vol 29 (3) ◽  
pp. 189-199 ◽  
Author(s):  
A.Mtz. Viturtia ◽  
J. Mata-Alvarez ◽  
F. Cecchi ◽  
G. Fazzini

2018 ◽  
Vol 71 ◽  
pp. 474-484 ◽  
Author(s):  
Rafika Saidi ◽  
Pierre Pol Liebgott ◽  
Hana Gannoun ◽  
Lamia Ben Gaida ◽  
Baligh Miladi ◽  
...  

ChemInform ◽  
2005 ◽  
Vol 36 (19) ◽  
Author(s):  
H. Bouallagui ◽  
Y. Touhami ◽  
R. Ben Cheikh ◽  
M. Hamdi

Author(s):  
Robert A. Leishear ◽  
Si Y. Lee ◽  
Mark D. Fowley ◽  
Michael R. Poirier ◽  
Timothy J. Steeper

Research has been completed in a pilot scale, eight foot diameter tank to investigate blending, using a pump with dual opposing jets. The jets re-circulate fluids in the tank to promote blending when fluids are added to the tank. Different jet diameters and different horizontal and vertical orientations of the jets were investigated. In all, eighty five tests were performed both in a tank without internal obstructions and a tank with vertical obstructions similar to a tube bank in a heat exchanger. These obstructions provided scale models of several miles of two inch diameter, serpentine, vertical cooling coils below the liquid surface for a full scale, 1.3 million gallon, liquid radioactive waste storage tank. Two types of tests were performed. One type of test used a tracer fluid, which was homogeneously blended into solution. Data were statistically evaluated to determine blending times for solutions of different density and viscosity, and the blending times were successfully compared to computational fluid dynamics (CFD) models. The other type of test blended solutions of different viscosity. For example, in one test a half tank of water was added to a half tank of a more viscous, concentrated salt solution. In this case, the fluid mechanics of the blending process was noted to significantly change due to stratification of fluids. CFD models for stratification were not investigated. This paper is the fourth in a series of papers resulting from this research (Leishear, et.al. [1–4]), and this paper documents final test results, statistical analysis of the data, a comparison of experimental results to CFD models, and scale-up of the results to a full scale tank.


1994 ◽  
Vol 30 (3) ◽  
pp. 119-128
Author(s):  
Elemér Dobolyi ◽  
Imre Takács

An existing rendering plant wastewater treatment facility has to be upgraded to meet the newly set British and more stringent EC effluent standards. After detailed analysis it turned out, that the existing treatment plant cannot be upgraded, a new plant has to be built. The rendering plant processes slaughterhouse wastes. The wastewater contains easily biodegradable organic substances, mainly organic acids, organic bonded nitrogen and ammonia. According to the new effluent standards the main task, besides the organic removal was the complete removal of nitrogen. The aim of this study was to find out the best available technology and the basic wastewater design data. For this purpose, on site pilot scale experiments were carried out. In several test runs the influent BOD and T K N have varied of between 1400-5500 and 460-1120 mg/l, respectively. Based on the experimental results, single-sludge nitrification-denitrification technology was selected for the full scale treatment plant. The plant was extended by chemical phosphate removal applying the post-precipitation method. In addition to the experimental schedule, a mathematical model of the plant was developed for two purposes.– to verify the applicability of the general activated sludge model under high concentration influent conditions, and– to generalize experimental results and provide a tool to predict plant performance under full scale conditions. On the basis of successful pilot plant experiments and model calibration, full scale plant design parameters were determined and presented. The full scale plant is under construction.


2020 ◽  
Vol 27 (23) ◽  
pp. 28585-28596 ◽  
Author(s):  
Santiago Rodríguez-Valderrama ◽  
Carlos Escamilla-Alvarado ◽  
Pasiano Rivas-García ◽  
Jean-Pierre Magnin ◽  
Mónica Alcalá-Rodríguez ◽  
...  

1991 ◽  
Vol 23 (7-9) ◽  
pp. 1179-1188 ◽  
Author(s):  
Sam Ghosh

An innovative pilot-scale two-phase anaerobic digestion process was developed to stabilize concentrated (7-5%) activated sludge at a 12-day SRT and a loading rate of 5 kg VS/m3 d. The pilot system exhibited an unusually high VS reduction of 73%, an aggregated carbohydrate-protein-lipid reduction of 71%, and a methane yield of 0.3 m3/kg VS added. Optimum acidogenic fermentation producing 9500 mg/l of organic acids was achieved at an HRT of 3 days and a loading rate of 16 kg VS/m3.d or higher. Enhanced acidogenic hydrolysis and prehydrolysis of polymerics and nocardial residues eliminated digester foaming. Sulfate and nitrate reductions, and syntrophic methane fermentation occurred during acidogenic conversions. Acetogenesis and aceticlastic methane fermentation were predominant in the methane digester, which generated 93% of the system methane production. Contrary to literature reports, there was no inhibition of acetogens or methanogens at a high ammonia-N concentration of 2500 mg/l and pH 7.7. The acid and methane digesters could be started quickly. They were resilient to temperature drops and loading fluctuations. Acid fermentation of 8% of the plant's WAS and addition of the resulting fermentation products (enzymes, organic acids, etc.) to the full-scale high-rate digester increased VS reduction by 46% and eliminated severe foaming. Full-scale two-phase digestion of WAS is scheduled to start in 1990.


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