Anaerobic digestion of chicken manure by a leach-bed process coupled with side-stream membrane ammonia separation

Bayrakdar, Alper; Sürmeli, Recep Önder; Çallı, Barış

doi:10.1016/j.biortech.2018.02.117

Cited by 66 publications

(33 citation statements)

References 45 publications

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“…This technology has been successfully applied to recover nitrogen from ammonia-rich wastewaters, such as livestock wastes or anaerobic digestates, producing valuable segregated fertilizer nutrients [ 6 , 7 , 8 ]. Diverse factors have been identified for improving the efficiency of this technology, namely the increase in the pH of the wastewater, the flow rate of the trapping solution, or the wastewater agitation [ 6 , 7 , 8 , 9 , 10 ]. For example, nitrogen recovery from raw swine manure reached 81% when pH in the wastewater was maintained in the range of 8.5–9.…”

Section: Introductionmentioning

confidence: 99%

Pilot-Scale Demonstration of Membrane-Based Nitrogen Recovery from Swine Manure

et al. 2020

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Gas-permeable membranes technology presents a high potential for nitrogen (N) recovery from wastewaters rich in ammonia (NH3). The EU project Ammonia Trapping (AT) is aimed at transferring knowledge from the lab-scale level to on-farm pilot-scale level, using this technology to recover NH3 from livestock wastewaters. The goal of this study is to report the results of an on-farm pilot-scale demonstration plant using gas-permeable membranes to recover N from raw swine manure. After a setup optimization of the plant, stable, and continuous operation was achieved. The maximum NH3 recovery rate obtained was 38.20 g NH3-N m−2 membrane day−1. This recovery rate was greatly affected by the temperature of the process. In addition to its contribution to NH3 emissions reduction, this technology contributes to the recovery of nutrients in the form of a concentrated stable ammonium sulphate solution. This solution contained 3.2% of N, which makes it suitable for fertigation. The economic approach revealed an economic feasibility of the technology, resulting in a cost of 2.07 € per kg N recovered.

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Section: Introductionmentioning

confidence: 99%

Pilot-Scale Demonstration of Membrane-Based Nitrogen Recovery from Swine Manure

et al. 2020

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“…(9). This equation has become popularized as the modified Gompertz equation: This equation has been used in current research, such as Bah et al [29], Capson-Tojo et al [3], Bayrakdar et al [4], Mancini et al [8], Martín Juárez et al [9], and Li et al [7].…”

Section: Considerations To the Gompertz Modelmentioning

confidence: 99%

Review of Mathematical Models for the Anaerobic Digestion Process

Velázquez‐Martí¹,

Quelal²,

Gaibor‐Chávez³

et al. 2019

Anaerobic Digestion

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To describe anaerobic fermentation, many mathematical models have been suggested. A commonly accepted hypothesis in microbial growth is the speed of cellular reproduction, which is proportional to the concentration of cells at that instant. The constant of proportionality between the speed of growth and cell concentration is called cell growth rate, μ. In many occasions, the cell growth rate is considered constant. This leads to conclude that the concentration of cells versus time presents an exponential function. The consideration of this equation provides a good adjustment in the beginning of central phase of the anaerobic fermentation process. However, it moves away from the measurements when there is a limited reproduction due to lack of nutrients and competition between the cells in the environment. This produces a sigmoidal variation in concentration. To find a suitable fit function for all phases of the process, Gompertz proposes a model that considers the cell growth rate as variable. In this chapter, the Gompertz model, kinetic models, transference, and cone models are evaluated. Different adaptations to fit the variables to the obtained values in the experiments have been reviewed.

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“…Such techniques include optimization of the C/N ratio or trace elements, pH or temperature control, high volume dilution of water, use of zeolite and biochar, and contact membrane technology [12,[15][16][17]. These mentioned practices quickly provide optimal biogas production, but they can be difficult to implement economically and strategically, and the environmental aspect remains unclear [11,[18][19][20][21][22]. Biological methods can be a solution to these issues.…”

Section: Introductionmentioning

confidence: 99%

Influence of Aerobic Pretreatment of Poultry Manure on the Biogas Production Process

et al. 2020

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Anaerobic digestion of poultry manure is a potentially-sustainable means of stabilizing this waste while generating biogas. However, technical, and environmental protection challenges remain, including high concentrations of ammonia, low C/N ratios, limited digestibility of bedding, and questions about transformation of nutrients during digestion. This study evaluated the effect of primary biological treatment of poultry manure on the biogas production process and reduction of ammonia emissions. Biogas yield from organic matter content in the aerobic pretreatment groups was 13.96% higher than that of the control group. Biogas production analysis showed that aerobic pretreatment of poultry manure has a positive effect on biogas composition; methane concentration increases by 6.94–7.97% after pretreatment. In comparison with the control group, NH3 emissions after aerobic pretreatment decreased from 3.37% (aerobic pretreatment without biological additives) to 33.89% (aerobic pretreatment with biological additives), depending on treatment method.

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Anaerobic digestion of chicken manure by a leach-bed process coupled with side-stream membrane ammonia separation

Cited by 66 publications

References 45 publications

Pilot-Scale Demonstration of Membrane-Based Nitrogen Recovery from Swine Manure

Pilot-Scale Demonstration of Membrane-Based Nitrogen Recovery from Swine Manure

Review of Mathematical Models for the Anaerobic Digestion Process

Influence of Aerobic Pretreatment of Poultry Manure on the Biogas Production Process

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