A kinetic evaluation of the anaerobic digestion of two-phase olive mill effluent in batch reactors

2004 ◽  
Vol 80 (3) ◽  
pp. 241-250 ◽  
Author(s):  
Francisco Raposo ◽  
Rafael Borja ◽  
Enrique Sánchez ◽  
Antonio Martín
Keyword(s):  
Anaerobic Digestion ◽  
Batch Reactors ◽  
Two Phase ◽  
Kinetic Evaluation ◽  
Olive Mill

scholarly journals Enhancing methane production from the invasive macroalga Rugulopteryx okamurae through anaerobic co-digestion with olive mill solid waste: process performance and kinetic analysis

2021 ◽  
Author(s):  
D. de la Lama-Calvente ◽  
M. J. Fernández-Rodríguez ◽  
J. Llanos ◽  
J. M. Mancilla-Leytón ◽  
R. Borja
Keyword(s):  
Anaerobic Digestion ◽  
Solid Waste ◽  
Methane Production ◽  
Methane Yield ◽  
Specific Rate ◽  
Order Kinetic ◽  
Two Phase ◽  
First Order ◽  
Olive Mill Solid Waste ◽  
Olive Mill

AbstractThe biomass valorisation of the invasive brown alga Rugulopteryx okamurae (Dictyotales, Phaeophyceae) is key to curbing the expansion of this invasive macroalga which is generating tonnes of biomass on southern Spain beaches. As a feasible alternative for the biomass management, anaerobic co-digestion is proposed in this study. Although the anaerobic digestion of macroalgae barely produced 177 mL of CH4 g−1 VS, the co-digestion with a C-rich substrate, such as the olive mill solid waste (OMSW, the main waste derived from the two-phase olive oil manufacturing process), improved the anaerobic digestion process. The mixture improved not only the methane yield, but also its biodegradability. The highest biodegradability was found in the mixture 1 R. okamurae—1 OMSW, which improved the biodegradability of the macroalgae by 12.9% and 38.1% for the OMSW. The highest methane yield was observed for the mixture 1 R. okamurae—3 OMSW, improving the methane production of macroalgae alone by 157% and the OMSW methane production by 8.6%. Two mathematical models were used to fit the experimental data of methane production time with the aim of assessing the processes and obtaining the kinetic constants of the anaerobic co-digestion of different combination of R. okamurae and OMSW and both substrates independently. First-order kinetic and the transference function models allowed for appropriately fitting the experimental results of methane production with digestion time. The specific rate constant, k (first-order model) for the mixture 1 R. okamurae- 1.5 OMSW, was 5.1 and 1.3 times higher than that obtained for the mono-digestion of single OMSW and the macroalga, respectively. In the same way, the transference function model revealed that the maximum methane production rate (Rmax) was also found for the mixture 1 R. okamurae—1.5 OMSW (30.4 mL CH4 g−1 VS day−1), which was 1.6 and 2.2 times higher than the corresponding to the mono-digestions of the single OMSW and sole R. okamurae (18.9 and 13.6 mL CH4 g−1 VS day−1), respectively.

scholarly journals Batch culture growth of Chlorella zofingiensis on effluent derived from two-stage anaerobic digestion of two-phase olive mill solid waste

2008 ◽  
Vol 11 (2) ◽  
pp. 0-0 ◽  
Author(s):  
Lissette Travieso Cordoba ◽  
Alma Rosa Dominguez Bocanegra ◽  
Barbara Rincon Llorente ◽  
Enrique Rincon Llorente ◽  
Francisco Benitez Echegoyen ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Solid Waste ◽  
Batch Culture ◽  
Two Stage ◽  
Two Phase ◽  
Chlorella Zofingiensis ◽  
Olive Mill Solid Waste ◽  
Culture Growth ◽  
Olive Mill

scholarly journals Impact of microwave pre-treatment on the batch anaerobic digestion of two-phase olive mill solid residue: a kinetic approach

2016 ◽  
Vol 67 (4) ◽  
pp. 165 ◽  
Author(s):  
B. Rincón ◽  
M. González de Canales ◽  
A. Martín ◽  
R. Borja
Keyword(s):  
Anaerobic Digestion ◽  
Kinetic Constant ◽  
Solid Residue ◽  
Heating Rates ◽  
Two Phase ◽  
Batch Tests ◽  
Pre Treatment ◽  
Anaerobic Digestibility ◽  
Kinetics Of ◽  
Olive Mill

The effect of a microwave (MW) pre-treatment on two-phase olive mill solid residue (OMSR) or alperujo with a view to enhancing its anaerobic digestibility was studied. The MW pre-treatment was carried out at a power of 800 W and at a targeted temperature of 50 °C using different heating rates and holding times. The following specific energies were applied: 4377 kJ·kg TS-1 (MW1), 4830 kJ·kg TS-1 (MW2), 7170 kJ·kg TS-1 (MW3) and 7660 kJ·kg TS-1 (MW4). The maximum methane yield, 395±1 mL CH4·g VSadded-1, was obtained for MW4. The effect of the pre-treatment on the kinetics of the process was also studied. The methane production curves generated during the batch tests showed a first exponential stage and a second sigmoidal stage for all the cases studied. In the first stage, the kinetic constant for the pre-treatment MW1 was 54.8% higher than that obtained for untreated OMSR.

The effect of organic loading rate on the anaerobic digestion of two-phase olive mill solid residue derived from fruits with low ripening index

2007 ◽  
Vol 82 (3) ◽  
pp. 259-266 ◽  
Author(s):  
Bárbara Rincón ◽  
Lissette Travieso ◽  
Enrique Sánchez ◽  
María de los Ángeles Martín ◽  
Antonio Martín ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Loading Rate ◽  
Organic Loading Rate ◽  
Solid Residue ◽  
Organic Loading ◽  
Two Phase ◽  
Ripening Index ◽  
Olive Mill
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