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

Riau, Víctor; Burgos, Laura; Camps, Francesc Rius; Domingo, Francesc; Torrellas, M.; Antón, Assumpció; Blasi, August Bonmatí

doi:10.1016/j.wasman.2021.04.006

Cited by 15 publications

(9 citation statements)

References 49 publications

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“…reported a methane hectare yield of 3000–3600 Nm 3 CH 4 ha −1 when triticale is harvested at the optimal growth stage achieving high biomass yield and best premises for making silage 39 . These results highlight how triticale could also be a suitable energy crop for biogas plants when compared with other agricultural feedstocks such as sorghum, rye, and black oat, with methane hectare yields of 3137–4630, 3700–4484, 1496 m 3 CH 4 ha −1 , respectively 11,40,41 …”

Section: Resultsmentioning

confidence: 90%

Evaluation of triticale anaerobic digestion in a double cropping system: Relation between biomass yield, chemical composition, and biomethane production

Garuti

Soldano

Mazzola

et al. 2022

Biofuels Bioprod Bioref

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For sustainable biomethane production, energy crops should not compete for land against feed and food. In response to this requirement, a set of practices for an innovative way to produce food and biomethane was developed in Italy with the Biogasdoneright™ model, which introduces the double‐cropping system along with digestate fertilization and minimum tillage. Triticale is a promising feedstock as energy crop in such systems. Ninteen varieties of triticale harvested at milk and dough development stages were evaluated. Principal component analysis showed that cellulose content positively affects methane production whereas starch content has only a very weak relation with specific methane yield and methane formation rate. Despite these relations, triticale chemical composition did not influence the profitability of bioenergy production as much as the total biomass solids yields, the total solids concentration at harvest, and the timing of growth. Triticale can be considered a suitable energy crop for biomethane targeting at least 4600 Nm3 CH4 per hectare. © 2022 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Section: Resultsmentioning

confidence: 90%

Evaluation of triticale anaerobic digestion in a double cropping system: Relation between biomass yield, chemical composition, and biomethane production

Garuti

Soldano

Mazzola

et al. 2022

Biofuels Bioprod Bioref

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“…Out of 326 studies, 65 were obtained after screening, yielding 432 relevant AcoD data sets for meta-analysis and modeling, grouped according to their mono-digestion control, including the: (1) AM compared to AcoD of ruminant manure AM(RM):LB, − pig manure AM(PM):LB, chicken manure AM(CM):LB, AM:FW, ,− AM:slaughterhouse waste (SL), , AM:desugared molasses (MO), and AM:algae (AL); (2) LB mono-digestion compared to LB:AM(RM), ,,, LB:AM(PM), ,− LB:AM(CM), ,,, LB:FW, , LB:MO, and LB:SS; (3) SS mono-digestion to SS:fats, oils, grease (FOG), − SS:FW, − SS:AL, − SS:LB, , SS:high-carbon liquid substrate (L-C), and SS:glycerin (Gly); and (4) FW mono-digestion compared to FW:AM, ,, FW:LB, ,,− FW:SS, ,,,,, FW:high-nitrogen liquid substrate (L-N); as well as additional data sets ,…”

Section: Methodsmentioning

confidence: 99%

Understanding Anaerobic Co-digestion of Organic Wastes through Meta-Analysis

Chuenchart,

Surendra,

Khanal

2024

ACS EST Eng.

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Anaerobic co-digestion (AcoD) is becoming increasingly popular in the biogas industry for its numerous advantages over mono-digestion, including balanced nutrient profiles, enhanced process stability, synergistic methane production, and reduced greenhouse gas emissions. However, varying results across AcoD studies highlight the need for an extensive meta-analysis of a large data set to better understand these synergies. Here, we compared methane yields from 432 data sets, based on the ratio of means, from AcoD and mono-digestion. The relative synergistic index (RSI) revealed synergistic effects in AcoD of lignocellulosic biomass with animal manures, particularly pig (RSI = 1.91) and chicken manures (RSI = 1.71). Due to its rapid biodegradability, food waste AcoD also demonstrated synergistic effects with both animal manures (RSI = 1.28) and lignocellulosic biomass (RSI = 1.41). After regrouping data by high-carbon cosubstrates, interpretable machine learning models identified temperature, which accelerates the hydrolysis of lignocellulosic biomass and emulsification of fats, oils, and grease, as the key factor influencing methane yield. Furthermore, experimental validation using food waste and sewage sludge co-digestion confirmed the superiority of multivariable linear regression in predicting specific methane yield over other models in terms of simplicity and efficiency.

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“…Another path worth exploring is the use of catch crops to effectively reduce nutrients' runoff and leaching. In this respect, evidence was provided that the ensiling and subsequent co-digestion of catch crops with manure was an economically viable way to increase biogas production [81], all the while improving nutrient recycling and bringing grist to the mill of the circular economy.…”

Section: Best Management Practices: Reaping Optimal Benefits and Minimising Environmental Risksmentioning

confidence: 99%

The Potential of Digestate and the Liquid Fraction of Digestate as Chemical Fertiliser Substitutes under the RENURE Criteria

Reuland

Sigurnjak

Dekker³

et al. 2021

Agronomy

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This study assessed how digestate and the liquid fraction (LF) of digestate would perform as candidate RENURE fertilisers (recovered nitrogen from manure) in nitrate vulnerable zones under the proposed criteria of the Joint Research Centre, namely, (i) a mineral nitrogen to total nitrogen ratio ≥ 90% (Nmin:TN ≥ 90%) or a total organic carbon to TN ratio ≤ 3 (TOC:TN ≤ 3); (ii) limits of ≤300 copper (Cu) mg kg−1 and ≤800 Zinc (Zn) mg kg−1. These criteria were applied to unpublished data (n = 2622) on digestate compositional properties, further amended with data from the literature (n = 180); digestate analysis from seven full-scale biogas facilities (n = 14); and biogas industry stakeholders (n = 23). The results showed that Cu and Zn mostly met the criteria, with compliance rates of 94.7% (of 1035 entries) and 95.0% (of 1038 entries), respectively. Just above 5% (of 1856 entries) met the Nmin/TN ≥ 90% criterion, while 36% (of 1583 entries) met the TOC/TN ≤ 3 criterion, while total compliance was 32% (of 1893 entries). When targeting the LF, total compliance increased noticeably, between 43 and 58% depending on DM range, indicating that LFs are better suited RENURE candidate fertilisers than unseparated digestate.

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

Cited by 15 publications

References 49 publications

Evaluation of triticale anaerobic digestion in a double cropping system: Relation between biomass yield, chemical composition, and biomethane production

Evaluation of triticale anaerobic digestion in a double cropping system: Relation between biomass yield, chemical composition, and biomethane production

Understanding Anaerobic Co-digestion of Organic Wastes through Meta-Analysis

The Potential of Digestate and the Liquid Fraction of Digestate as Chemical Fertiliser Substitutes under the RENURE Criteria

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