scholarly journals Biogas production from undiluted chicken manure and maize silage: A study of ammonia inhibition in high solids anaerobic digestion

2016 ◽  
Vol 218 ◽  
pp. 1215-1223 ◽  
Author(s):  
Chen Sun ◽  
Weixing Cao ◽  
Charles J. Banks ◽  
Sonia Heaven ◽  
Ronghou Liu
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Chicken Manure ◽  
High Solids ◽  
Maize Silage ◽  
Ammonia Inhibition

scholarly journals Cellulase effect on anaerobic digestion of maize silage under discontinuous operation

2015 ◽  
Vol 35 (5) ◽  
pp. 951-958 ◽  
Author(s):  
Deny Oliva-Merencio ◽  
Ileana Pereda-Reyes ◽  
Ulrike Schimpf ◽  
Stefan Koehler ◽  
Ariovaldo J. da Silva
Keyword(s):  
Particle Size ◽  
Anaerobic Digestion ◽  
Biogas Production ◽  
Batch Process ◽  
Kinetic Approach ◽  
Maize Silage ◽  
Infinite Time ◽  
Anaerobic Process ◽  
Natural Size ◽  
Biodegradability Test

ABSTRACT This paper studied the effect of adding an enzyme (ellulose) on anaerobic digestion of maize silage. We compared materials at chopping lengths of 8 mm (MSL), 4mm (MSS) and natural size (Ms) under a mesophilic and discontinuous operation (batch process). Hence, we found the process to be significantly influenced by particle size. Moreover, the ellulose addition did not significantly impact biogas production after a 35-day digestion period. Ms and MSS displayed an improved response to all variables when compared with MSL and MSL+C, with significant differences. Studies on the refractory fraction at infinite time (R0) have demonstrated that the lowest values correspond to Ms and MSS (0.122 and 0.155, respectively). The Kinetic approach and the Ultimate Biodegradability test are useful tools to evaluate the effect of the addition of an enzyme to the anaerobic process.

Effect of fipronil on biogas production performance during anaerobic digestion of chicken manure and corn straw

2019 ◽  
Vol 54 (6) ◽  
pp. 449-458 ◽  
Author(s):  
Xiongfeng Hu ◽  
Haifu Jiang ◽  
Yanjie Zhang ◽  
Fuchuan Huang ◽  
Mingsheng Jiang
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Production Performance ◽  
Chicken Manure ◽  
Corn Straw

scholarly journals Performance of Anaerobic Digestion of Chicken Manure Under Gradually Elevated Organic Loading Rates

2019 ◽  
Vol 16 (12) ◽  
pp. 2239 ◽  
Author(s):  
Fei Wang ◽  
Mengfu Pei ◽  
Ling Qiu ◽  
Yiqing Yao ◽  
Congguang Zhang ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Poultry Manure ◽  
Ammonia Nitrogen ◽  
Methane Content ◽  
Chicken Manure ◽  
Continuous Stirred Tank Reactor ◽  
Organic Loading ◽  
Biogas Yield ◽  
Loading Rates

Poultry manure is the main source of agricultural and rural non-point source pollution, and its effective disposal through anaerobic digestion (AD) is of great significance; meanwhile, the high nitrogen content of chicken manure makes it a typical feedstock for anaerobic digestion. The performance of chicken-manure-based AD at gradient organic loading rates (OLRs) in a continuous stirred tank reactor (CSTR) was investigated herein. The whole AD process was divided into five stages according to different OLRs, and it lasted for 150 days. The results showed that the biogas yield increased with increasing OLR, which was based on the volatile solids (VS), before reaching up to 11.5 g VS/(L·d), while the methane content was kept relatively stable and maintained at approximately 60%. However, when the VS was further increased to 11.5 g VS/(L·d), the total ammonia nitrogen (TAN), pH, and alkalinity (CaCO3) rose to 2560 mg·L−1, 8.2, and 15,000 mg·L−1, respectively, while the volumetric biogas production rate (VBPR), methane content, and VS removal efficiency decreased to 0.30 L·(L·d)−1, 45%, and 40%, respectively. Therefore, the AD performance immediately deteriorated and ammonia inhibition occurred. Further analysis demonstrated that the microbial biomass yield and concentrations dropped dramatically in this period. These results indicated that the AD stayed steady when the OLR was lower than 11.5 g VS/(L·d); this also provides valuable information for improving the efficiency and stability of AD of a nitrogen-rich substrate.

The valuation of malnutrition in the mono-digestion of maize silage by anaerobic batch tests

2008 ◽  
Vol 58 (7) ◽  
pp. 1453-1459 ◽  
Author(s):  
L. Hinken ◽  
I. Urban ◽  
E. Haun ◽  
I. Urban ◽  
D. Weichgrebe ◽  
...  
Keyword(s):  
Trace Elements ◽  
Anaerobic Digestion ◽  
Trace Element ◽  
Biogas Production ◽  
Renewable Energy Sources ◽  
Anaerobic Bacteria ◽  
Trace Element Content ◽  
Energy Crops ◽  
Maize Silage ◽  
Batch Tests

Anaerobic digestion is a technology which is used to produce methane from organic solids and energy crops. Especially in recent years, the fermentation of energy crops has become more and more important because of increasing costs for energy and special benefits for renewable energy sources in Germany. Anaerobic bacteria require macro and micro nutrients to grow. Absence of these elements can inhibit the anaerobic process significantly. In particular mono-substrates like maize or certain industrial wastewater often cannot provide all required nutrients. For this reason this research investigates the influence of substrate and trace elements on anaerobic digestion in detail. Different agricultural anaerobic biomasses are analysed with special regard to their trace element content. Based on these results, the influence of three trace elements (iron, cobalt, and nickel) on anaerobic digestion was studied in anaerobic batch tests at different sludge loading rates and for different substrates (maize and acetate). Biogas production was found to be 35% for maize silage and up to 70% higher for acetate with trace element dosage than in the reference reactor.

Study of Methane Production by High Temperature Anaerobic Fermentation of Chicken Manure and Stalks

2020 ◽  
Vol 14 (4) ◽  
pp. 551-557
Author(s):  
Yongku Li ◽  
Xiaomin Hu ◽  
Lei Feng
Keyword(s):  
High Temperature ◽  
Anaerobic Digestion ◽  
Production Rate ◽  
Methane Production ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Gas Production ◽  
Chicken Manure ◽  
Biogas Slurry ◽  
Production Rates

The changing parameters, as the biogas production rate, the methane production rate, the cumulative biogas amount, the cumulative methane amount, the biogas composition, pH etc. in high temperature anaerobic fermentation of chicken manure and stalks were analyzed by experiments with different mass ratios of chicken manure or livestock manure and stalks with a high C/N ratio. The methane production mechanism of high temperature anaerobic digestion of chicken manure and stalks was discussed in detail. It showed that not only the biogas production rates but also the methane production rates of R1–R7 demonstrated the trend of initial increase and then decrease after 50 d of high temperature anaerobic digestion. Besides, the gas production of R1 with pure chicken manure stopped on the 30th d of the reaction. The gas production of other groups R2–R7 also stopped on the corresponding 34th, 36th, 36th, 37th, 37th, and 37th day, respectively. At the end of the reaction, the cumulative biogas amounts and the cumulative methane amounts of R1–R7 were 411.58 and 269.54, 459.91 and 314.41, 425.32 and 294.11, 401.85 and 272.54, 382.63 and 257.07, 363.04 and 218.16, and 257.15 and 160.10 N ml/(g VS). The biogas slurry pH of R1–R7 all demonstrated a trend of initial decrease and then increase, e. g., pH of R2 reached the minimum of 5.94 on the 5th day. pH values of other groups were between 6.01 and 6.39. After the addition of 4 g of sodium bicarbonate on the 7th day, biogas slurry pH of R1–R7 all increased. pH was maintained between 7.16 and 7.44 until the end of the reaction.

scholarly journals Integration of Catalytic Biofuel Production and Anaerobic Digestion for Biogas Production

2021 ◽  
pp. 125-131
Author(s):  
G. Hurst ◽  
M. Peeters ◽  
S. Tedesco
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Biofuel Production ◽  
Chicken Manure ◽  
Solid Residue ◽  
Low Carbon ◽  
Waste Products ◽  
Low Carbon Economy ◽  
Promising Solution ◽  
Management Method

AbstractThe drive towards a low carbon economy will lead to an increase in new lignocellulosic biorefinery activities. Integration of biorefinery waste products into established bioenergy technologies could lead to synergies for increased bioenergy production. In this study, we show that solid residue from the acid hydrolysis production of levulinic acid, has hydrochar properties and can be utilised as an Anaerobic Digestion (AD) supplement. The addition of 6 g/L solid residue to the AD of ammonia inhibited chicken manure improved methane yields by +14.1%. The co-digestion of biorefinery waste solids and manures could be a promising solution for improving biogas production from animal manures, sustainable waste management method and possible form of carbon sequestration.

High-solids anaerobic digestion requires a trade-off between total solids, inoculum-to-substrate ratio and ammonia inhibition

2019 ◽  
Vol 16 (11) ◽  
pp. 7011-7024 ◽  
Author(s):  
V. Pastor-Poquet ◽  
S. Papirio ◽  
E. Trably ◽  
J. Rintala ◽  
R. Escudié ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
High Solids ◽  
Ammonia Inhibition ◽  
Trade Off ◽  
Total Solids ◽  
Substrate Ratio

Co-anaerobic digestion of chicken manure with the addition of Cymbopogan citratus, Mentha piperita and Citrus sinensis as fly deterrent agents: Biogas production and Kinetic study

2021 ◽  
Vol 15 ◽  
pp. 100748
Author(s):  
Mohd Hakimi ◽  
Rashid Shamsuddin ◽  
Rajashekar Pendyala ◽  
Ahmer Ali Siyal ◽  
Hamad AlMohamadi
Keyword(s):  
Anaerobic Digestion ◽  
Kinetic Study ◽  
Citrus Sinensis ◽  
Biogas Production ◽  
Chicken Manure ◽  
Mentha Piperita ◽  
Cymbopogan Citratus

The required characteristics of ensiled crops used as a feedstock for biogas production: a review

2011 ◽  
Vol 28 (2) ◽  
pp. 85-96 ◽  
Author(s):  
Pavel Kalač
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Starch Content ◽  
Maize Silage ◽  
High Quality ◽  
Cobalt Nickel ◽  
Maize Varieties ◽  
Biogas Plants ◽  
Low Nitrogen ◽  
Biological Nature

The required characteristics of ensiled crops used as a feedstock for biogas production: a reviewMaize and grass silages are the main feedstock for anaerobic digestion in agricultural biogas plants. High-quality silage is necessary for high methane yields. Grasses should be cut and ensiled at leafy stages, until full heading, prior to an extensive lignification. Late ripening maize varieties should be harvested towards full ripening due to the increasing starch content in grains, and early to medium ripening varieties at the end of waxy ripeness. The substrate availability for methanogens is improved by fine chopping. Pretreatment processes of a thermal, chemical or biological nature attempting to disrupt lignocellulosic matter are economically demanding, including the application of enzyme hydrolysing structural polysaccharides. Application of lactic acid bacteria inoculants at ensiling seems to have an insignificant effect on methane yields. Some micronutrients necessary for methanogens growth are often deficient in the silages and particularly cobalt, nickel and iron should be supplemented. Maize silage has too low nitrogen content for methanogens growth. The high acidity of silage needs to be partially neutralised prior to anaerobic digestion.

Biogas production from chicken manure at different organic loading rates in a mesophilic full scale anaerobic digestion plant

2020 ◽  
Vol 141 ◽  
pp. 105693 ◽  
Author(s):  
Linas Jurgutis ◽  
Alvyra Slepetiene ◽  
Jonas Volungevicius ◽  
Kristina Amaleviciute-Volunge
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Full Scale ◽  
Chicken Manure ◽  
Organic Loading ◽  
Loading Rates
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