Bioaugmentation of a two-stage thermophilic (68°C/55°C) anaerobic digestion concept for improvement of the methane yield from cattle manure

2007 ◽  
Vol 97 (6) ◽  
pp. 1638-1643 ◽  
Author(s):  
Henrik Bangsø Nielsen ◽  
Zuzana Mladenovska ◽  
Birgitte Kiær Ahring
Keyword(s):  
Anaerobic Digestion ◽  
Cattle Manure ◽  
Methane Yield ◽  
Two Stage

The effect of mixed-enzyme addition in anaerobic digestion on methane yield of dairy cattle manure

2014 ◽  
Vol 35 (19) ◽  
pp. 2476-2482 ◽  
Author(s):  
Sutaryo Sutaryo ◽  
Alastair James Ward ◽  
Henrik Bjarne Møller
Keyword(s):  
Anaerobic Digestion ◽  
Dairy Cattle ◽  
Cattle Manure ◽  
Methane Yield

Comparison of two-stage thermophilic (68°C/55°C) anaerobic digestion with one-stage thermophilic (55°C) digestion of cattle manure

2004 ◽  
Vol 86 (3) ◽  
pp. 291-300 ◽  
Author(s):  
H. B. Nielsen ◽  
Z. Mladenovska ◽  
P. Westermann ◽  
B. K. Ahring
Keyword(s):  
Anaerobic Digestion ◽  
Cattle Manure ◽  
Two Stage ◽  
One Stage

Influence of Total Solid and Stirring Frequency on Performance of Dry Anaerobic Digestion Treating Cattle Manure

2011 ◽  
Vol 79 ◽  
pp. 48-52 ◽  
Author(s):  
Hong Li Li ◽  
Yan Wang
Keyword(s):  
Anaerobic Digestion ◽  
Total Solid ◽  
Performance Parameter ◽  
Cattle Manure ◽  
Methane Yield ◽  
Operational Parameter ◽  
Experimental Procedure ◽  
Methane Generation ◽  
Biogas Yield ◽  
Dry Anaerobic Digestion

The aim of this paper was to analyze the biomethanization process of cattle manure with four different total solid percentages (15%, 20%, 25%, 30% TS) and three different stirring frequency. The experimental procedure was programmed to select the initial performance parameter and the operational parameter in a lab-reactor. The values of VFAs indicated that all the reactors showed no destabilization and at the end of the experiment the VFAs were consumed completely. The best performance for cattle manure biodegradation and methane generation was the reactor with 20% TS, with the biogas yield of 0.22 L/g VS and the methane yield of 0.11 LCH4/g VS. Furthermore, the better operational parameter of stirring frequency was stirring once every two days.

Mesophilic–thermophilic–mesophilic anaerobic digestion of liquid dairy cattle manure

2006 ◽  
Vol 53 (8) ◽  
pp. 253-261 ◽  
Author(s):  
M. Effenberger ◽  
J. Bachmaier ◽  
G. Garcés ◽  
A. Gronauer ◽  
P.A. Wilderer ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Dairy Cattle ◽  
Loading Rate ◽  
Cattle Manure ◽  
Methane Yield ◽  
Stirred Tank ◽  
Tank Reactor ◽  
Digestion Efficiency ◽  
Continuously Stirred Tank Reactor ◽  
Intestinal Enterococci

The potential of a mesophilic–thermophilic–mesophilic anaerobic digestion system was investigated with respect to improvement of both digestion and sanitation efficiencies during treatment of liquid cattle manure. The pilot plant produced a high methane yield from liquid dairy cattle manure of 0.24 m3 (kg VSfed)−1. Considering the low system loading rate of 1.4–1.5 kg VS (m3 d)−1, digestion efficiency compared to conventional processes did not appear improved. The minimum guaranteed retention time in the tubular thermophilic reactor was increased compared to a continuously stirred tank reactor. Levels of intestinal enterococci in raw liquid manure as determined with cultivation methods were reduced by 2.5–3 log units to a level of around 102 cfu/mL. This sanitizing effect was achieved both during mesophilic–thermophilic–mesophilic and thermophilic–mesophilic treatment, provided the thermophilic digester was operated at 53–55°C. A change in feeding interval from 1 h to 4 h did not significantly alter methane yield and sanitation efficiency. It was proposed that a two-stage, thermophilic–mesophilic anaerobic digestion system would be able to achieve the same sanitizing effect and equal or better digestion efficiency at lower costs.

scholarly journals Biofuel Produced from Solid-State Anaerobic Digestion of Dairy Cattle Manure in Coordination with Black Soldier Fly Larvae Decomposition

Energies ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 911 ◽  
Author(s):  
Choon Wee ◽  
Jung-Jeng Su
Keyword(s):  
Anaerobic Digestion ◽  
Solid State ◽  
Dairy Cattle ◽  
Cattle Manure ◽  
Methane Yield ◽  
Black Soldier Fly ◽  
Combination Process ◽  
Black Soldier Fly Larvae ◽  
Fly Larvae ◽  
Biological Treatment Process

This study was conducted to evaluate the feasibility of applying a two-step biological treatment process, solid-state anaerobic digestion (SSAD) and black soldier fly larvae (BSFL) composting, for the treatment of dairy cattle manure. Biogas from the SSAD of dairy cattle manure, and the digestate of SSAD was fed to BSFL. In turn, BSFL can be fed to animals as a protein supplement. Adjustment of the pH and 30% inoculation ratio (IR30) during SSAD produced the highest theoretical methane yield, 626.1 ± 28.7 L CH4/kg VSdes, with an ultimate methane yield of 96.81 ± 2.0 L CH4/kg VSload. For BSFL composting, the groups with a feeding rate of 75 and 100 mg/day/larvae had the highest body weight change, which was 969.6 ± 28.4% and 984.1 ± 177.6%, respectively. The combination process of SSAD and BSFL composting increases the incentive for dairy cattle manure treatment instead of conventional composting and produced more valuable products.

scholarly journals Biofuel Produced from Solid-State Anaerobic Digestion of Dairy Cattle Manure in Coordination with Black Soldier Fly Larvae Decomposition

2018 ◽  
Author(s):  
Choon Yong Wee ◽  
Jung-Jeng Su
Keyword(s):  
Anaerobic Digestion ◽  
Solid State ◽  
Dairy Cattle ◽  
Cattle Manure ◽  
Methane Yield ◽  
Black Soldier Fly ◽  
Combination Process ◽  
Black Soldier Fly Larvae ◽  
Fly Larvae ◽  
Biological Treatment Process

This study was conducted to evaluate the feasibility of applying a two-step biological treatment process, solid-state anaerobic digestion (SSAD) and black soldier fly larvae (BSFL) composting, for treating dairy cattle manure. Biogas from SSAD of dairy cattle manure, and the digestate of SSAD was fed to BSFL. In turn, BSFL can be fed to animals as a protein supplement. Adjustment of pH and 30% inoculation ratio (IR30) during SSAD produced the highest theoretical methane yield, 626.1±28.7 L CH4/kg VSdes, with an ultimate methane yield of 96.81±2.0 L CH4/kg VSload. For BSFL composting, the groups with a feeding rate of 75 and 100 mg/day/larvae had the highest body weight change, which was 969.6±28.4 and 984.1±177.6%, respectively. The combination process of SSAD and BSFL composting increases the incentive for dairy cattle manure treatment enabled higher waste removal efficiency, and produced more valuable products.

scholarly journals Effect of Effluent Recirculation on Biogas Production Using Two-stage Anaerobic Digestion of Citrus Waste

Molecules ◽  
2018 ◽  
Vol 23 (12) ◽  
pp. 3380 ◽  
Author(s):  
Lukitawesa ◽  
Rachma Wikandari ◽  
Ria Millati ◽  
Mohammad J. Taherzadeh ◽  
Claes Niklasson
Keyword(s):  
Anaerobic Digestion ◽  
Liquid Phase ◽  
Biogas Production ◽  
Continuous Process ◽  
Methane Yield ◽  
Organic Loading Rate ◽  
Anaerobic Sludge ◽  
Two Stage ◽  
Effluent Recirculation ◽  
Citrus Waste

Citrus waste is a promising potential feedstock for anaerobic digestion, yet the presence of inhibitors such as d-limonene is known to limit the process. Effluent recirculation has been proven to increase methane yield in a semi-continuous process for recalcitrant material, but it has never been applied to toxic materials. This study was aimed to investigate the effect of recirculation on biogas production from citrus waste as toxic feedstock in two-stage anaerobic digestion. The first digestion was carried out in a stirred tank reactor (STR). The effluent from the first-stage was filtered using a rotary drum filter to separate the solid and the liquid phase. The solid phase, rich in hydrophobic D-limonene, was discarded, and the liquid phase containing less D-limonene was fed into the second digester in an up-flow anaerobic sludge bed (UASB) reactor. A high organic loading rate (OLR 5 g VS/(L·day)) of citrus waste was fed into the first-stage reactor every day. The effluent of the first-stage was then fed into the second-stage reactor. This experiment was run for 120 days. A reactor configuration without recirculation was used as control. The result shows that the reactor with effluent recirculation produced a higher methane yield (160–203 NmL/g·VS) compared to that without recirculation (66–113 NmL/g·VS). More stable performance was also observed in the reactor with recirculation as shown by the pH of 5–6, while without recirculation the pH dropped to the range of 3.7–4.7. The VS reduction for the reactor with recirculation was 33–35% higher than that of the control without recirculation. Recirculation might affect the hydrolysis-acidogenesis process by regulating pH in the first-stage and removing most of the D-limonene content from the substrate through filtration.

scholarly journals Treatment of Cattle Manure by Anaerobic Co-Digestion with Food Waste and Pig Manure: Methane Yield and Synergistic Effect

2020 ◽  
Vol 17 (13) ◽  
pp. 4737 ◽  
Author(s):  
Gahyun Baek ◽  
Danbee Kim ◽  
Jinsu Kim ◽  
Hanwoong Kim ◽  
Changsoo Lee
Keyword(s):  
Anaerobic Digestion ◽  
Synergistic Effect ◽  
Food Waste ◽  
Antagonistic Effect ◽  
Cattle Manure ◽  
Methane Yield ◽  
Pig Manure ◽  
Mixing Ratio ◽  
Synergy Index ◽  
Index Model

The management of cattle manure (CM) has become increasingly challenging because its production continues to rise, while the regulations on manure management have become increasingly stringent. In Korea, most farms produce CM as a dry mixture with lignocellulosic bedding materials (mainly sawdust), making it impractical to treat CM by anaerobic digestion. To address this problem, this study examined whether anaerobic co-digestion with food waste (FW) and pig manure (PM) could be an effective approach for the treatment of CM. The batch anaerobic digestion tests at different CM: FW: PM mixing ratios showed that more methane was produced as the FW fraction increased, and as the CM fraction decreased. The response surface models describing how the substrate mixing ratio affects the methane yield and synergistic effect (methane yield basis) were successfully generated. The models proved that the methane yield and synergistic effect respond differently to changes in the substrate mixing ratio. The maximum 30-day methane yield was predicted at 100% FW, whereas the maximum 30-day synergy index was estimated for the mixture of 47% CM, 6% FW, and 47% PM (total solids basis). The synergy index model showed that CM, FW, and PM could be co-digested without a substantial loss of their methane potential at any mixing ratio (30-day synergy index, 0.89–1.22), and that a possible antagonistic effect could be avoided by keeping the FW proportion less than 50%. The results suggest that co-digestion with PM and FW could be flexibly applied for the treatment and valorization of CM in existing anaerobic digestion plants treating FW and PM.

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