Optimization Algorithms Applied to Anaerobic Digestion Process of Olive Mill Wastewater

2019 ◽  
pp. 84-94
Author(s):  
Echarrafi Khadija ◽  
Zouitina Manale ◽  
El Hassani Ibtisam ◽  
El Hajji Mounia
Keyword(s):  
Anaerobic Digestion ◽  
Optimization Algorithms ◽  
Olive Mill Wastewater ◽  
Anaerobic Digestion Process ◽  
Digestion Process ◽  
Olive Mill

Effect of a Starch-Rich Industrial Wastewater on the Acid-Phase Anaerobic Digestion Process

2005 ◽  
Vol 77 (4) ◽  
pp. 366-371 ◽  
Author(s):  
Panagiotis Elefsiniotis ◽  
David G Wareham ◽  
Marcus O Smith
Keyword(s):  
Anaerobic Digestion ◽  
Industrial Wastewater ◽  
Anaerobic Digestion Process ◽  
Digestion Process

A Mathematical Model for the Anaerobic Digestion Process Applied to a Mixture of Night Soil and Septic Tank Sludge

1986 ◽  
Vol 18 (7-8) ◽  
pp. 239-248 ◽  
Author(s):  
Sung Ryong Ha ◽  
Dwang Ho Lee ◽  
Sang Eun Lee
Keyword(s):  
Mathematical Model ◽  
Anaerobic Digestion ◽  
Biomass Concentration ◽  
Gas Production ◽  
Septic Tank ◽  
Volatile Acid ◽  
Hydraulic Residence Time ◽  
Anaerobic Digestion Process ◽  
Digestion Process ◽  
Proposed Model

Laboratory scale experiments were conducted to develop a mathematical model for the anaerobic digestion of a mixture of night soil and septic tank sludge. The optimum mixing ratio by volume between night soil and septic tank sludge was found to be 7:3. Due to the high solids content in the influent waste, mixed-liquor volatile suspended solids (MLVSS) was not considered to be a proper parameter for biomass concentration, therefore, the active biomass concentration was estimated based on deoxyribonucleic acid (DNA) concentration in the reactor. The weight ratio between acidogenic bacteria and methanogenic bacteria in the mixed culture of a well-operated anaerobic digester was approximately 3:2. The proposed model indicates that the amount of volatile acid produced and the gas production rate can be expressed as a function of hydraulic residence time (HRT). The kinetic constants of the two phases of the anaerobic digestion process were determined, and a computer was used to simulate results using the proposed model for the various operating parameters, such as BOD5 and volatile acid concentrations in effluent, biomass concentrations and gas production rates. These were consistent with the experimental data.

scholarly journals Linearization in the Large of the Anaerobic Digestion Process Using a Reduced-Order Koopman Operator

2020 ◽  
Vol 53 (2) ◽  
pp. 16840-16845
Author(s):  
Camilo Garcia-Tenorio ◽  
Mihaela Sbarciog ◽  
Eduardo Mojica-Nava ◽  
Alain Vande Wouwer
Keyword(s):  
Anaerobic Digestion ◽  
Koopman Operator ◽  
Reduced Order ◽  
Anaerobic Digestion Process ◽  
Digestion Process

Enhancing anaerobic digestion process with addition of conductive materials

Chemosphere ◽  
2021 ◽  
pp. 130449
Author(s):  
Yiwei Liu ◽  
Xiang Li ◽  
Shaohua Wu ◽  
Zhao Tan ◽  
Chunping Yang
Keyword(s):  
Anaerobic Digestion ◽  
Anaerobic Digestion Process ◽  
Conductive Materials ◽  
Digestion Process

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.

Low temperature thermo-chemical pretreatment of dairy waste activated sludge for anaerobic digestion process

2012 ◽  
Vol 103 (1) ◽  
pp. 415-424 ◽  
Author(s):  
R. Uma Rani ◽  
S. Adish Kumar ◽  
S. Kaliappan ◽  
Ick-Tae Yeom ◽  
J. Rajesh Banu
Keyword(s):  
Anaerobic Digestion ◽  
Low Temperature ◽  
Activated Sludge ◽  
Waste Activated Sludge ◽  
Chemical Pretreatment ◽  
Anaerobic Digestion Process ◽  
Digestion Process ◽  
Dairy Waste
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