Olive Mill Wastewater (OMW) Polyphenols Adsorption onto Polymeric Resins: Part I—Batch Anaerobic Digestion of OMW

2020 ◽  
Author(s):  
Aikaterini Ioannis Vavouraki ◽  
Margarita Andreas Dareioti ◽  
Michael Kornaros
Keyword(s):  
Anaerobic Digestion ◽  
Olive Mill Wastewater ◽  
Polymeric Resins ◽  
Olive Mill

Enhancement of the anaerobic digestion of olive mill wastewater by the removal of phenolic inhibitors

1992 ◽  
Vol 27 (4) ◽  
pp. 231-237 ◽  
Author(s):  
R. Borja ◽  
A. Martin ◽  
R. Maestro ◽  
J. Alba ◽  
J.A. Fiestas
Keyword(s):  
Anaerobic Digestion ◽  
Olive Mill Wastewater ◽  
Olive Mill

scholarly journals Structure of Microbial Communities When Complementary Effluents Are Anaerobically Digested

2021 ◽  
Vol 11 (3) ◽  
pp. 1293
Author(s):  
Ana Eusébio ◽  
André Neves ◽  
Isabel Paula Marques
Keyword(s):  
Anaerobic Digestion ◽  
Microbial Communities ◽  
Volatile Fatty Acids ◽  
Olive Mill Wastewater ◽  
Organic Load ◽  
Rrna Gene ◽  
Bacterial Populations ◽  
Next Generation Sequencing Ngs ◽  
Generation Sequencing ◽  
Olive Mill

Olive oil and pig productions are important industries in Portugal that generate large volumes of wastewater with high organic load and toxicity, raising environmental concerns. The principal objective of this study is to energetically valorize these organic effluents—piggery effluent and olive mill wastewater—through the anaerobic digestion to the biogas/methane production, by means of the effluent complementarity concept. Several mixtures of piggery effluent were tested, with an increasing percentage of olive mill wastewater. The best performance was obtained for samples of piggery effluent alone and in admixture with 30% of OMW, which provided the same volume of biogas (0.8 L, 70% CH4), 63/75% COD removal, and 434/489 L CH4/kg SVin, respectively. The validation of the process was assessed by molecular evaluation through Next Generation Sequencing (NGS) of the 16S rRNA gene. The structure of the microbial communities for both samples, throughout the anaerobic process, was characterized by the predominance of bacterial populations belonging to the phylum Firmicutes, mainly Clostridiales, with Bacteroidetes being the subdominant populations. Archaea populations belonging to the genus Methanosarcina became predominant throughout anaerobic digestion, confirming the formation of methane mainly from acetate, in line with the greatest removal of volatile fatty acids (VFAs) in these samples.

Kinetic study of anaerobic digestion of olive mill wastewater previously fermented with Aspergillus terreus

1993 ◽  
Vol 28 (6) ◽  
pp. 397-404 ◽  
Author(s):  
R. Borja ◽  
S.E. Garrido ◽  
L. Martínez ◽  
A. Ramos-Cormenzana ◽  
A. Martín
Keyword(s):  
Anaerobic Digestion ◽  
Kinetic Study ◽  
Aspergillus Terreus ◽  
Olive Mill Wastewater ◽  
Olive Mill

Performance and microbial analysis during long‐term anaerobic digestion of olive mill wastewater in a packed‐bed biofilm reactor

2019 ◽  
Vol 95 (3) ◽  
pp. 850-861 ◽  
Author(s):  
Ghizlane Enaime ◽  
Edith Nettmann ◽  
Stephan Berzio ◽  
Abdelaziz Baçaoui ◽  
Abdelrani Yaacoubi ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Packed Bed ◽  
Olive Mill Wastewater ◽  
Biofilm Reactor ◽  
Microbial Analysis ◽  
Olive Mill

scholarly journals Limiting factors for anaerobic digestion of olive mill wastewater blends under mesophilic and thermophilic conditions

2018 ◽  
Vol 49 (2) ◽  
pp. 130-137
Author(s):  
Demetrio Antonio Zema ◽  
Giovanni Zappia ◽  
Souraya Benalia ◽  
Giuseppe Zimbalatti ◽  
Enzo Perri ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Anaerobic Digestion ◽  
Volatile Fatty Acids ◽  
Biogas Production ◽  
Olive Mill Wastewater ◽  
Limiting Factors ◽  
Citrus Peel ◽  
Thermophilic Conditions ◽  
High Concentrations ◽  
Olive Mill

Experimental trials of anaerobic digestion of olive mill wastewater (OMW) blended with other agro-industrial by-products were carried out to evaluate biogas production and sensitivity of the process to inhibiting compounds. Blends containing different percentages of OMW, digested liquid manure, and citrus peel were subjected to a batch anaerobic digestion process under both mesophilic and thermophilic conditions. The results showed that blends with percentages of OMW higher than 20% (v/v) had low methane yields due high concentrations of polyphenols (PPs) and/or volatile fatty acids (concentrations above 0.8 g kg–1 and 2.4 g L–1, respectively). The addition of other substrates such as citrus peel may have induced synergic inhibiting effects of PPs and essential oils (EO) on microbial growth. Thermophilic processes were more sensitive to these inhibiting compounds than mesophilic processes. The results of this study suggest that reducing PPs and EO concentrations in blends subject to anaerobic digestion below the inhibiting concentrations of 0.6 g L–1 and 0.5 g kg–1, respectively, is suitable. Additionally, it is advisable to maintain the volatile fatty acids content below 2 g L–1 to avoid its evident toxic effects on the growth of microorganisms in biochemical processes.

Anaerobic Digestion of Olive Mill Wastewater: Focusing on the Effect of Nitrogen Source

2019 ◽  
Vol 47 (3) ◽  
pp. 1800300
Author(s):  
Ioannis S. Zarkadas ◽  
Stavros Zachariou ◽  
Ioannis Stamou ◽  
Fokion V. Kaldis ◽  
Marilena Lioti ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Nitrogen Source ◽  
Olive Mill Wastewater ◽  
Olive Mill
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