Closing nutrient loops in a maize rotation. Catch crops to reduce nutrient leaching and increase biogas production by anaerobic co-digestion with dairy manure

This study evaluated antibiotic degradation and biogas production during anaerobic digestion of dairy manure contained two common veterinary antibiotics at 37 °C. After 18 days of digestion, the concentration of chlortetracycline (CTC) decreased more than 80% regardless of the initial CTC concentration. The concentration of cefazolin (CEZ) decreased from 10 to 0.08 mg/L in 6 days. Less than 50 mg/L CTC and 10 mg/L CEZ had negligible impact on biogas production during anaerobic digestion process. The result showed that the anaerobic digestion has a potential to degrade antibiotic residues in livestock manure.

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Impacts of Temperatures on Biogas Production in Dairy Manure Anaerobic Digestion

International Journal of Engineering and Technology ◽

10.7763/ijet.2012.v4.448 ◽

2012 ◽

Vol 4 (5) ◽

pp. 629-631 ◽

Cited By ~ 9

Author(s):

Pramod K. Pandey ◽

Michelle L. Soupir

Keyword(s):

Anaerobic Digestion ◽

Biogas Production ◽

Dairy Manure

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Semi-continuous anaerobic co-digestion of dairy manure with three crop residues for biogas production

Bioresource Technology ◽

10.1016/j.biortech.2014.01.064 ◽

2014 ◽

Vol 156 ◽

pp. 307-313 ◽

Cited By ~ 59

Author(s):

Jiang Li ◽

Luoyu Wei ◽

Qiwu Duan ◽

Guoquan Hu ◽

Guozhi Zhang

Keyword(s):

Crop Residues ◽

Biogas Production ◽

Dairy Manure

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Mesophilic Anaerobic Digestion of Dairy Manure and Vegetable Waste Using Batch Reactor

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1008-1009.121 ◽

2014 ◽

Vol 1008-1009 ◽

pp. 121-126

Author(s):

Lin Jun Shi ◽

Wen Lan Liu ◽

Hui Fen Liu ◽

Wei Yu Zhang ◽

Li Tong Ban

Keyword(s):

Anaerobic Digestion ◽

Biogas Production ◽

Batch Reactor ◽

Theoretical Data ◽

Gas Production ◽

Dairy Manure ◽

Experimental Results ◽

Vegetable Waste ◽

Start Up ◽

Waste Mixture

Anaerobic digestion of single dairy manure, single vegetable waste, mixture of dairy manure and vegetable waste was conducted to produce biogas. Startup characteristic, leachate parameters and inoculation amount were investigated. The experimental results showed that anaerobic digestion can start up quickly with acclimated thickening sludge as inoculation sludge and 30% was appropriate inoculation percentage. Digestion of single dairy manure and mixture of dairy manure and vegetable waste appeared better buffering ability with higher alkalinity than single vegetable waste. Compared to single digestion of dairy manure or vegetable waste, mixture of dairy manure and vegetable waste is more suitable for anaerobic digestion. Under the conditions of TS=10% and T=(36±1)°C, cumulative biogas production of mixture of dairy manure and vegetable waste is 5281 mL during the period of 30 days and average daily gas production is about 176 mL. These results could provide theoretical data for practical biogas engineering.

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Effect of Mixing Digested Slurry on the Rate of Biogas Production from Dairy Manure in Batch Fermenter

Energy Sources ◽

10.1080/009083101316862462 ◽

2001 ◽

Vol 23 (8) ◽

pp. 711-715 ◽

Cited By ~ 16

Author(s):

Anjan K. Kalia, Shiv P. Singh

Keyword(s):

Biogas Production ◽

Dairy Manure ◽

Batch Fermenter

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Ammonium Pretreatment and Addition Improve Stability of Environmental Parameters and Biogas Production under Anaerobic Co-digestion of Rice Straw and Dairy Manure

10.1101/335588 ◽

2018 ◽

Author(s):

Yun Tang ◽

Shuzhen Zou ◽

Di Kang

Keyword(s):

Environmental Factors ◽

Biogas Production ◽

Environmental Parameters ◽

Ammonium Hydroxide ◽

Variable Coefficients ◽

Dairy Manure ◽

Response Relationship ◽

Environment Factors ◽

Pretreatment Conditions ◽

The Stability

AbstractThis paper optimized the anaerobic digestion (AD) pretreatment process, identified the relationship between stability of environmental factors and biogas production under ammonium hydroxide (NH3·H2O) pretreatment and analyzed the reason of NH3·H2O pretreatment to increase biogas production. Variable coefficients (CVs) of environmental factors were calculated to study the stability of environmental factors during AD process. The effect of initial AD environment factors on the stability of environmental factors during AD process was analyzed by redundancy analysis. Path analysis was used to analyze the response relationship the stability of environmental factors between and total biogas production (TBP). Results showed that pretreatment at 8% for 4 days, the TBP produced the highest value (302.5mL/g TS) and significantly higher than the other values (P < 0.01). NH3·H2O pretreatment had effect on the initial AD environment factors and the environment factors during AD process. Under the NH3·H2O pretreatment conditions, the stability of environment factors during AD process was affected by initial AD environment factors, while they had direct and indirect influences on the TBP. This research concluded that NH3·H2O pretreatment improved TBP via changing the initial environment of AD and the stability of environment factors during AD process, as well as the response relationship among initial AD environment factors and the stability of environment factors during AD process and biogas production, the changes improved the stability of environmental factors and made the environment more suitable for AD.

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Effect of Solids Removal From Dairy Manure Feedstock on Biogas Production in Anaerobic Digesters

ASME 2010 4th International Conference on Energy Sustainability, Volume 2 ◽

10.1115/es2010-90235 ◽

2010 ◽

Author(s):

Peter E. Zemke ◽

Byard D. Wood ◽

Christopher R. Rohleder

Keyword(s):

Elevated Temperatures ◽

Biogas Production ◽

Developed Countries ◽

Dairy Manure ◽

Dairy Wastewater ◽

Anaerobic Digesters ◽

Biogas Yield ◽

Volatile Solids ◽

Mechanical Separation ◽

Separation Equipment

Many modern anaerobic digesters in developed countries consist of a digestion process in which solids are reduced to biogas, followed by mechanical separation that removes the majority of the remaining solids from the effluent. Experience has shown that such systems are often plagued with plugging due to excessive solids in the digester influent. Moreover, the mechanical separation equipment is prematurely degraded due to the elevated temperatures and corrosive compounds in the digester effluent. Reversing the order of separation and digestion offers a proven method of eliminating these problems, but at the expense of lower biogas production. The work presented in this paper quantifies this difference in biogas production by comparing the biogas yields of dairy wastewater feedstocks with and without prior mechanical solids separation through a 0.75-mm screen. Laboratory-scale batch digesters were operated up to 40 days at 35–40 °C and monitored for mass of volatile solids consumed and biogas production. Although the initially separated influent contained only half as much volatile solids, the ultimate biogas yield was only 25% less than that obtained with non-separated influent, demonstrating some tradeoff between higher energy production and system reliability.

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