scholarly journals The Effect of Distinct Operational Conditions on Organic Material Removal and Biogas Production in the Anaerobic Treatment of Cattle Manure

2011 ◽  
Author(s):  
Neslihan Manav Demir ◽  
Tamer Coskun ◽  
Eyup Debik
Keyword(s):  
Organic Material ◽  
Material Removal ◽  
Biogas Production ◽  
Anaerobic Treatment ◽  
Cattle Manure ◽  
Operational Conditions

BIOGAS PRODUCTION BY ANAEROBIC TREATMENT OF WASTE MIXTURE CONSISTING OF CATTLE MANURE AND VEGETABLE REMAINS

2012 ◽  
Vol 11 (4) ◽  
pp. 849-856 ◽  
Author(s):  
Alvydas Zagorskis ◽  
Pranas Baltrenas ◽  
Antonas Misevicius ◽  
Edita Baltrenaite
Keyword(s):  
Biogas Production ◽  
Anaerobic Treatment ◽  
Cattle Manure ◽  
Waste Mixture

Enhancement of polycyclic aromatic hydrocarbons removal during anaerobic treatment of urban sludge

2003 ◽  
Vol 48 (4) ◽  
pp. 53-60 ◽  
Author(s):  
E. Trably ◽  
D. Patureau ◽  
J.P. Delgenes
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Sewage Sludge ◽  
Aromatic Hydrocarbons ◽  
Agricultural Soils ◽  
Biogas Production ◽  
Bacterial Consortium ◽  
Anaerobic Treatment ◽  
Biological Degradation ◽  
Low Concentrations ◽  
Polycyclic Aromatic

Anaerobically stabilized sewage sludge has potential to partially substitute synthetic fertilizers. The main risk with the recycling of urban sludge on agricultural soils is the accumulation of unwanted products, such as trace metals and organic micropollutants. In this context, the polycyclic aromatic hydrocarbons (PAHs) are particularly monitored because of their toxic properties at low concentrations and their high resistance to biological degradation. The aim of the present study was to optimize PAHs removal during anaerobic digestion of contaminated sewage sludge. Thirteen PAHs were monitored in laboratory-scale anaerobic bioreactors under mesophilic (35°C) and thermophilic (55°C) methanogenic conditions. Abiotic losses were statistically significant for the lightest PAHs, such as fluorene, phenanthrene and anthracene. It was shown that PAH removal was due to a specific biological activity. Biological PAHs removal was significantly enhanced by an increase of the temperature from 35°C to 55°C, especially for the heaviest PAHs. Bioaugmentation experiment was also performed by addition of a PAH-adapted bacterial consortium to a non-acclimated reactor. Significant enhancement of PAHs removal was observed. It was finally shown that PAH removal efficiencies and methanogenic performances were closely linked. The rate of biogas production may be used as an indicator of bacterial activity on PAH removal.

Anaerobic co-digestion of winery waste and waste activated sludge: assessment of process feasibility

2013 ◽  
Vol 69 (2) ◽  
pp. 269-277 ◽  
Author(s):  
C. Da Ros ◽  
C. Cavinato ◽  
F. Cecchi ◽  
D. Bolzonella
Keyword(s):  
Activated Sludge ◽  
Biogas Production ◽  
Oxygen Demand ◽  
Pilot Scale ◽  
Waste Activated Sludge ◽  
Organic Loading ◽  
Operational Conditions ◽  
Loading Rates ◽  
Thermophilic Conditions ◽  
Soluble Chemical Oxygen Demand

In this study the anaerobic co-digestion of wine lees together with waste activated sludge in mesophilic and thermophilic conditions was tested at pilot scale. Three organic loading rates (OLRs 2.8, 3.3 and 4.5 kgCOD/m3d) and hydraulic retention times (HRTs 21, 19 and 16 days) were applied to the reactors, in order to evaluate the best operational conditions for the maximization of the biogas yields. The addition of lee to sludge determined a higher biogas production: the best yield obtained was 0.40 Nm3biogas/kgCODfed. Because of the high presence of soluble chemical oxygen demand (COD) and polyphenols in wine lees, the best results in terms of yields and process stability were obtained when applying the lowest of the three organic loading rates tested together with mesophilic conditions.

scholarly journals BIOGAS PRODUCTION FROM DAIRY CATTLE MANURE, UNDER ORGANIC AND CONVENTIONAL PRODUCTION SYSTEMS

2017 ◽  
Vol 37 (6) ◽  
pp. 1081-1090 ◽  
Author(s):  
Camila F. Matos ◽  
Juliana L. Paes ◽  
Érika F. M. Pinheiro ◽  
David V. B. De Campos
Keyword(s):  
Dairy Cattle ◽  
Production Systems ◽  
Biogas Production ◽  
Cattle Manure ◽  
Conventional Production

scholarly journals CONSIDERATIONS ON RECYCLING POSSIBILITIES OF AGRO-INDUSTRIAL WASTES BY ANAEROBIC DIGESTION TREATMENT

1970 ◽  
Vol 63 ◽  
Author(s):  
Maria V. Morar
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Bacterial Flora ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Anaerobic Treatment ◽  
Industrial Wastes ◽  
Waste Water Treatment Plant ◽  
Industrial Processing

In our country, the developments of the measures for the prevention of the environmental pollution are aligning to the UE Directives. The costs for the treatment of the water wastes are continuously increasing, following to the also increasing of the investments costs. Therefore it is necessary to accord attention for the alternatives of cleaning, treating, respective recycling of the agro-industrial wastes and their reintroduction in the natural circuit. At the processing of the food results wastes with high organic charge. The effluents form the processing of dairy products, sugar, starch, beer yeasts as well as breweries or distilleries are getting fast into acids fermentation, finally resulting organic acids. Such process water wastes can be released in the canalization by dilution or by a suitable treating. As an example, for the distillery wastes (distillery slops) with a high dry matter contents (4-20%), the waste water treatment plant shall be designed properly (with mechanical separation step and biological treatment) to ensure the capacity of purifying according to the high flow and increased concentration, due to the high CBOD5 concentration. The treatment of such water wastes can be realized with aerobic processes, which suppose a high energetic consumption. While in the aerobic purifying processes 50 % of the CBOD5 is involved in the forming of biomass and slurry in excess, in the anaerobic treatment processes (anaerobic or methane digestion) a high part of the substrate (until 70 %) is metabolized through the metabolic transformation of bacterial flora, with production of biogas. Therefore, the concentrated water wastes, with potential for the energy production could offer a possibility of energy replacement in the own processing units. The paper presents a review of the anaerobic digestion for different wastes from the agro-industrial processing and their potential for the biogas production. There are presented possibilities of mixture, respectively of co-digestion of different wastes the agro-industrial processing with other wastes from the agriculture (from cereals processing, biomass, manure etc). Simultaneously biogas plants from the praxis with functioning characteristics are presented.

scholarly journals Increasing biogas production of rumen fluid using cattle manure collected at different time as a substrate

2014 ◽  
Vol 7 (4) ◽  
pp. 44-47 ◽  
Author(s):  
Rabiu, A ◽  
◽  
Yaakub, H ◽  
Liang, J. B ◽  
Samsudin, A. A
Keyword(s):  
Biogas Production ◽  
Rumen Fluid ◽  
Cattle Manure

Shifts of acidogenic bacterial group and biogas production by adding two industrial residues in anaerobic co-digestion with cattle manure

2021 ◽  
pp. 1-9
Author(s):  
Guilherme Henrique da Silva ◽  
Nathan Oliveira Barros ◽  
Larice Aparecida Rezende Santana ◽  
Jailton da Costa Carneiro ◽  
Marcelo Henrique Otenio
Keyword(s):  
Biogas Production ◽  
Cattle Manure ◽  
Bacterial Group ◽  
Industrial Residues
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