Removal and recovery of nutrients as struvite from anaerobic digestion residues of poultry manure

Yılmazel, Yasemin Dilşad; Demirer, Göksel N.

doi:10.1080/09593330.2010.512925

Cited by 58 publications

(46 citation statements)

References 38 publications

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“…Yilmazel and Demirer (2011) showed that acidification of the solid fraction of AD effluent produced a phosphorus enriched solution. Yilmazel and Demirer (2011) attained nearly complete phosphorus (99.6-100%) and partial NH 4 -N (3.3-65.6%) recoveries from the phosphorus enriched solution in an optimized fluidized-bed reactor (Yilmazel and Demirer, 2011). To release phosphorus from calcium phosphates in struvite reactors, added EDTA as a chelating agent.…”

Section: Struvite Crystallizationmentioning

confidence: 99%

“…The composition of hydroxyapatite is similar to phosphate rocks, indicating it could be integrated into existing fertilizer manufacturing (Bellier et al, 2006). The use of acidification as pretreatment (Yilmazel and Demirer, 2011) and low cost magnesium inputs (Lahav et al, 2013) could improve the cost-effectiveness of struvite crystallization. Future investigations should evaluate struvite crystallization from AD effluent at larger scale and conduct economic analyses for feasibility assessment for both centralized and farm-scale AD systems.…”

Section: Struvite Crystallizationmentioning

confidence: 99%

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Beyond land application: Emerging technologies for the treatment and reuse of anaerobically digested agricultural and food waste

et al. 2015

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Effective treatment and reuse of the massive quantities of agricultural and food wastes generated daily has the potential to improve the sustainability of food production systems. Anaerobic digestion (AD) is used throughout the world as a waste treatment process to convert organic waste into two main products: biogas and nutrient-rich digestate, called AD effluent. Biogas can be used as a source of renewable energy or transportation fuels, while AD effluent is traditionally applied to land as a soil amendment. However, there are economic and environmental concerns that limit widespread land application, which may lead to underutilization of AD for the treatment of agricultural and food wastes. To combat these constraints, existing and novel methods have emerged to treat or reuse AD effluent. The objective of this review is to analyze several emerging methods used for efficient treatment and reuse of AD effluent. Overall, the application of emerging technologies is limited by AD effluent composition, especially the total solid content. Some technologies, such as composting, use the solid fraction of AD effluent, while most other technologies, such as algae culture and struvite crystallization, use the liquid fraction. Therefore, dewatering of AD effluent, reuse of the liquid and solid fractions, and land application could all be combined to sustainably manage the large quantities of AD effluent produced. Issues such as pathogen regrowth and prevalence of emerging organic micro-pollutants are also discussed.

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Section: Struvite Crystallizationmentioning

confidence: 99%

Section: Struvite Crystallizationmentioning

confidence: 99%

Beyond land application: Emerging technologies for the treatment and reuse of anaerobically digested agricultural and food waste

et al. 2015

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“…In many cases, particularly those where animal and agricultural waste is the main source of N and P, Mg must be supplemented into the system to promote crystallization. In recent years, struvite recovery has been implemented in the treatment of a variety of wastewater sources, including landfill leachate [85], anaerobic digester effluent [86], as well as swine [87,88], poultry [89], and fertilizer wastewater [90•]. In all cases, after the introduction of Mg, struvite recovery was shown to be between 85 and 97 %.…”

Section: Chemical Precipitationmentioning

confidence: 99%

Nitrogen and Phosphorus Recovery from Wastewater

2015

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Use of nitrogen-and phosphorus-based synthetic fertilizers shows an increasing trend, but this has led to largescale influx of reactive nitrogen in the environment, with serious implications on human health and the environment. On the other hand, phosphorus, a non-renewable resource, faces a serious risk of depletion. Therefore, recovery and reuse of nitrogen and phosphorus is highly desirable. For nitrogen recovery, an ion exchange/adsorption-based process provides concentrated streams of reactive nitrogen. Bioelectrochemical systems efficiently and effectively recover nitrogen as NH 3 (g) or (NH 4 ) 2 SO 4 . Air stripping of ammonia from anaerobic digestate has been reported to recover 70-92 % of nitrogen. Membrane separation provides recovery in the order of 99-100 % with no secondary pollutant in the permeate.With regard to phosphorus (P) removal, physical filtration and membrane processes have the potential to reduce suspended P to trace amounts but provide minimal dissolved P removal. Chemical precipitation can remove 80-99 % P in wastewater streams and recover it in the form of fertilizer (struvite). Acid hydrolysis can convert recovered P into usable phosphoric acid and phosphate fertilizers. Physical-chemical adsorption and ion exchange media can reduce P to trace or non-detect concentrations, with minimal waste production and high reusability. Biological assimilation through constructed wetlands removes both N (83-87 %) and P (70-85 %) from wastewaters, with recovery in the form of fish/animal feeds and biofuel. The paper discusses methods and important results on recovery of nitrogen and phosphorus from wastewater.

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“…Poultry manure contains a high fraction of biodegradable organic matter and therefore their disposal without treatment causes adverse environmental impacts (Ogunwande et al, 2008). Among the different methods that have been used to treat poultry wastes, anaerobic digestion has been recommended by many authors (Ardic and Taner, 2005;Yilmazel and Demirer, 2011). Anaerobic digestion is a widely applied method in which anaerobic bacteria and archaea degrade complex organic material to biogas (Angelidaki et al, 2011).…”

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confidence: 99%

Zeolite and swine inoculum effect on poultry manure biomethanation

Kougias

Fotidis

Zaganas

et al. 2013

International Agrophysics

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A b s t r a c t. Poultry manure is an ammonia-rich substrate that inhibits methanogenesis, causing severe problems to the anaerobic digestion process. In this study, the effect of different natural zeolite concentrations on the mesophilic anaerobic digestion of poultry waste inoculated with well-digested swine manure was investigated. A significant increase in methane production was observed in treatments where zeolite was added, compared to the treatment without zeolite. Methane production in the treatment with 10 g dm -3of natural zeolite was found to be 109.75% higher compared to the treatment without zeolite addition. The results appear to be influenced by the addition of zeolite, which reduces ammonia toxicity in anaerobic digestion and by the ammonia-tolerant swine inoculum.K e y w o r d s: poultry manure, zeolite, swine manure inoculum, ammonia inhibition, anaerobic digestion INTRODUCTIONPoultry farming became one of the most intensive branches of livestock production in modern agriculture. The consequence of this intensive production is generation of large amounts of wastes (Sakar et al., 2009). Poultry manure contains a high fraction of biodegradable organic matter and therefore their disposal without treatment causes adverse environmental impacts (Ogunwande et al., 2008). Among the different methods that have been used to treat poultry wastes, anaerobic digestion has been recommended by many authors (Ardic and Taner, 2005;Yilmazel and Demirer, 2011). Anaerobic digestion is a widely applied method in which anaerobic bacteria and archaea degrade complex organic material to biogas (Angelidaki et al., 2011). However, poultry manure is a substrate rich in total ammonia (ammonium + free ammonia) which, in high concentrations, is a well-known inhibitor of methanogenesis. Ammonia is produced by the biological degradation of nitrogenous matter, mostly in the form of proteins (Chen et al., 2008). It has been established that ammonia toxicity is mainly caused by the free ammonia concentration in the substrate (Chen et al., 2008). According to the literature, free ammonia concentrations above 100 mg NH 3 -N dm -3 are able to inhibit unacclimated methanogenic cultures to elevated ammonia levels (Kotsopoulos et al., 2008). The free ammonia concentration in a substrate is mainly affected by pH, temperature, the total ammonia concentration, and the total gas pressure (Bonmatí and Flotats, 2003;Nielsen and Angelidaki, 2008). Finally, it is generally accepted that when the total ammonia exceeds 4 g NH 4 + -N dm -3 , methanogenesis is inhibited regardless of free ammonia levels (Nakakubo et al., 2008). A common solution to eliminate ammonia inhibition during the anaerobic digestion of poultry manure is the dilution of the substrate to 0.5-3.0% of total solids (Bujoczek et al., 2000). However, the final large amount of wastes to be treated renders this solution as economically unattractive. An alternative way to avoid ammonia toxicity is the addition of clay mineral compounds, such as bentonite and natural zeolite. Zeolit...

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Removal and recovery of nutrients as struvite from anaerobic digestion residues of poultry manure

Cited by 58 publications

References 38 publications

Beyond land application: Emerging technologies for the treatment and reuse of anaerobically digested agricultural and food waste

Beyond land application: Emerging technologies for the treatment and reuse of anaerobically digested agricultural and food waste

Nitrogen and Phosphorus Recovery from Wastewater

Zeolite and swine inoculum effect on poultry manure biomethanation

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