Nutrient recovery technologies for anaerobic digestion systems: An overview

Romero-Güiza, M.S.; Mata‐Alvarez, J.; Rivera, J.; Garcia, Sergi Astals

doi:10.18273/revion.v29n1-2016001

Cited by 38 publications

(24 citation statements)

References 125 publications

(168 reference statements)

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“…The solid fraction can be used to produce compost or transported longer distances as a concentrated fertilizer since this fraction suppose only the 25-35% of the original digestate but contains 60-80% of its dry matter and almost all its phosphorus. However, only 20-25% of the initial nitrogen is retained in the solid fraction (Holm-Nielsen et al, 2009;Romero-Güiza et al, 2016). Another alternative is to burn the solid fraction in order to recover the nutrients from the ashes (Amann et al, 2018;Gorazda et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen and Phosphorus Recovery From Anaerobically Pretreated Agro-Food Wastes: A Review

Campos

Crutchik

Franchi

et al. 2019

Front. Sustain. Food Syst.

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Anaerobic digestion (AD) is commonly used for the stabilization of agro-food wastes and recovery of energy as methane. Since AD removes organic C but not nutrients (N and P), additional processes to remove them are usually applied to meet the stringent effluent criteria. However, in the past years, there was a shift from the removal to the recovery of nutrients as a result of increasing concerns regarding limited natural resources and the importance given to the sustainable treatment technologies. Recovering N and P from anaerobically pretreated agro-food wastes as easily transportable and marketable products has gained increasing importance to meet both regulatory requirements and increase revenue. For this reason, this review paper gives a critical comparison of the available and emerging technologies for N and P recovery from AD residues.

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Section: Introductionmentioning

confidence: 99%

Nitrogen and Phosphorus Recovery From Anaerobically Pretreated Agro-Food Wastes: A Review

Campos

Crutchik

Franchi

et al. 2019

Front. Sustain. Food Syst.

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“…Caldas de 2,5% (0,154MtonCO 2 e/año) [4]. Los residuos de poda y de comida han alcanzado un gran interés para ser degradados en procesos biológicos para la producción de biogás [5] y otros productos de valor agregado como ácidos grasos volátiles [6], hidrógeno [7] y nutrientes (N y P principalmente) [8]. En países como Estados Unidos, los residuos de alimentos son el componente principal de la generación municipal, con aproximadamente 43,6 millones de toneladas enviadas a disposición final cada año [9].…”

Section: Palabras-chave: Biogás Co-digestão Digestão Resíduos De Cunclassified

Evaluación de la digestión y co-digestión anaerobia de residuos de comida y de poda en bioreactores a escala laboratorio

Solarte-Toro

Moreno

Zuluaga

2017

rev.ion

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Resumen El deterioro ambiental provocado por el alto consumo de combustibles fósiles y la inadecuada disposición de residuos sólidos, ha incentivado su conversión en productos energéticos de alto valor agregado a partir de diferentes procesos biotecnológicos con el fin de compensar parte de la demanda energética. En este trabajo se evalúa la eficiencia, el rendimiento y la productividad del proceso de digestión y co-digestión anaerobia de residuos de comida y poda para valorar su viabilidad como sustratos en la generación de biogás. El seguimiento y evaluación del proceso de digestión mesófila se realizó usando biorreactores por lotes con un volumen activo de 3L, una Relación Inóculo a Sustrato (RIS) de 0,25 (sólidos totales) y una relación residuos de comida a poda de 1,6 (sólidos totales) en el ensayo de co-digestión. En los ensayos realizados se obtuvieron eficiencias de producción de biogás del 38% y 49% con respecto al potencial teórico (determinado a partir de la ecuación de Buswell) para los residuos de poda y comida respectivamente en mono-digestión, y un 66% para la mezcla poda-comida. El modelo de Gompertz de crecimiento de biomasa fue utilizado para simular la generación de biogás en cada proceso. Estos resultados y el seguimiento del pH durante la digestión, permiten concluir que la mezcla de residuos de comida con residuos de poda mejora los rendimientos de producción de biogás y la estabilidad del sistema en términos de pH, siendo una alternativa para la generación de bioenergía a partir de residuos de cotidiana generación en las ciudades colombianas.

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“…Moreover, the operational problems such as fouling in membrane, ion‐exchange and adsorption systems or prevention of light penetration in microalgal nutrient removal processes present additional concerns which limit the applicability of such processes (Sheets et al., ; Shi et al., ). Therefore, the land application of digestates as a fertilizer or soil conditioner remains as the most favorable option for digestate management (Romero‐Güiza, Mata‐Alvarez, Chimenos Rivera, & Astals Garcia, ; Sheets et al., ). However, there are several limitations regarding application of digestate on land.…”

Section: Introductionmentioning

confidence: 99%

Anaerobic treatability and residual biogas potential of the effluent stream of anaerobic digestion processes

Ülgüdür

Demirer

2019

Water Environment Research

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Although anaerobic digestion is a well-established technology, the treatment and disposal of the digestate still presents a challenge due to lack of viable methods for processing. The residual organic matter in digestates also creates a significant residual biogas potential. This fact indicates that the digestates need further processing not only to reduce their organic content for disposal, but also to capture the biogas associated with this residual organic content. This study investigated anaerobic treatment and residual biogas potential of digestates obtained from five full-scale farm-based digesters. The results indicated that it was possible to reduce the total chemical oxygen demand (COD t ) of the digestates with an efficiency of 21%-84%. The corresponding biogas yields of digestates ranged between 0.078 and 0.326 L biogas /g VS added . This level of biogas production is comparable to the biogas production potential of several commonly used raw substrates. • Practitioner points• Significant CODt reduction and biogas capture can be attained by AD of digestates. • The digestates subjected to anaerobic treatment yielded up to 82% CODt removal. • Residual biogas yields of digestates ranged between 0.078-0.326 Lbiogas/g VSadded. • Biogas yields obtained were comparable to many raw feedstocks of biogas plants.

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Nutrient recovery technologies for anaerobic digestion systems: An overview

Cited by 38 publications

References 125 publications

Nitrogen and Phosphorus Recovery From Anaerobically Pretreated Agro-Food Wastes: A Review

Nitrogen and Phosphorus Recovery From Anaerobically Pretreated Agro-Food Wastes: A Review

Evaluación de la digestión y co-digestión anaerobia de residuos de comida y de poda en bioreactores a escala laboratorio

Anaerobic treatability and residual biogas potential of the effluent stream of anaerobic digestion processes

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