Agronomic characteristics of five different urban waste digestates

Tampio, Elina; Salo, Tapio; Rintala, Jukka

doi:10.1016/j.jenvman.2016.01.001

Cited by 121 publications

(75 citation statements)

References 45 publications

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“…The pH, solids concentrations of the digestate, and feedstock are usually assessed to evaluate the effect of digestate on soil quality and plant growth. The use of alkaline digestate could increase NH 4 -N volatilization from soil during spreading, depending on the temperature [40], and the acidic digestates can decrease soil pH and enhance heavy metal mobilization in soils [41]. Subsequently, the effect of digestate pH on soil is dependent on soil characteristics [42].…”

Section: Resultsmentioning

confidence: 99%

Effect of Fertilizer and Storage Period on Oxidative Stability and Color of Rapeseed Oils

Kachel‐Jakubowska¹,

Sujak²,

Krajewska³

2018

Pol. J. Environ. Stud.

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We analysed physical and chemical properties of seeds and oils from different cultivars of winter rapeseeds ('Markus', 'Bios' and 'Feliks') that were cultivated using bio-gas natural manure (digestate) or with a commercially accessible Yara NPK 5014-28 (NPK) fertilizer, both of which were analyzed for element content. Seeds produced without use of fertilizers were taken as control. Prior to cold-pressing of oils, seeds were analyzed for fatty acid content. Cultivar 'Bios' breed with use of digestate showed a lower amount of oleic acid (C18:1), while the 'Feliks' cultivar had higher content of this fatty acid and lower amounts of linoleic acid (C18:2) as compared to respective controls. In the case of the application of NPK fertilizer, the increase in C18:1 was observed for the cultivars 'Markus' and 'Feliks'. In the latter the decrease in the content of C18:2 was observed as compared to control. The oils were analyzed monthly for photosynthetic pigment content and oxidative stability as well as color during a storage period of three months. Oils contained similar amounts of chlorophylls and carotenoids. Oils derived from seeds produced with the use of commercial NPK fertilizer were characterized with higher oxidation stability (induction time) as compared to digestate. Gradual darkening of the oils was observed. Statistical analysis (p<0.05) showed significant correlation between all the color parameters and term of measurements as well as with the applied fertilizer.

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Section: Resultsmentioning

confidence: 99%

Effect of Fertilizer and Storage Period on Oxidative Stability and Color of Rapeseed Oils

Kachel‐Jakubowska¹,

Sujak²,

Krajewska³

2018

Pol. J. Environ. Stud.

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“…Hence, it is possible that application of LFDIG with high mineral N content slightly increase the lettuce FW yield. These results are supported by Tampio et al (), where in a pot experiment 5 different urban digestates produced 5–30% higher ryegrass yields compared to synthetic N fertilizer (NH 4 NO 3 ) with a similar N concentration and equal P and K levels to maintain N as the only responsive nutrient. In order to calculate the ANR and NFRV values, the crop N concentration and yield data were taken into consideration.…”

Section: Discussionmentioning

confidence: 99%

“…The

{NO}_{3}^{-}

in lettuce was determined according to Anderson and Case (). Finally, in order to evaluate the fertilizer value of tested products in terms of N, apparent N recovery (ANR; Schröder et al, ; Cavalli et al, ; Tampio et al, ) and N fertilizer replacement value (NFRV; Kai et al, ; Sørensen and Eriksen , ; Schröder et al, ; Cavalli et al, ) were determined as follows:

true ANR = \frac{false(N normal uptake {normal}_{TREATMENT} - N normal uptake {normal}_{CONTROL} false)}{total normal N normal applied {normal}_{TREATMENT}},

true NFRV (%) = \frac{AN R_{normal BIO - BASED normal TREATMENT}}{AN R_{normal CAN normal TREATMENT}} \times 100 .

…”

Section: Methodsmentioning

confidence: 99%

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Does acidification increase the nitrogen fertilizer replacement value of bio‐based fertilizers?

Sigurnjak

Michels

Crappé³

et al. 2017

J. Plant Nutr. Soil Sci.

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Acidification of manure, digestate and their processed derivatives has been proposed as a technique to, amongst others, mitigate ammonia emissions related to application in the field. The current study investigated whether acidification of (1) pig slurry (PS), (2) liquid fraction of pig slurry (LFPS), (3) digestate (DIG), and (4) liquid fraction of digestate (LFDIG) increases their nitrogen (N) fertilizer replacement value (NFRV) as compared to non‐acidified counterparts, a synthetic N fertilizer (calcium ammonium nitrate; CAN) and an unfertilized control. Product performance was evaluated from the perspective of (1) crop development (yield, nutrient uptake, and crop quality assessment) via a pot experiment with Lactuca sativa L. and (2) soil N dynamics [net N release (Nrel,net) and net N mineralization] via a soil incubation experiment. Crop yield of pots receiving bio‐based fertilizers performed ‘on par' with CAN as compared to unfertilized control, implying that bio‐based fertilizers derived from digestate or manure could potentially play a role in replacing synthetic N fertilizers. However, our findings also suggest that acidification did not result in an increased use efficiency of applied N. NFRVs of acidified products were below those of non‐acidified products and CAN, with crop yield on average 6–13% and 11–18% lower compared to non‐acidified products and the CAN treatment, respectively. A possible explanation for lower performance as compared to non‐acidified products could be an inhibitory delay in the Nrel,net, which in our experimental design proved to be negative for crops with short production cycles. This pattern was revealed in the incubation experiments in which Nrel,net in acidified products remained below that of non‐acidified, in this study tentatively attributed to immobilization of mineral N. However, this negative effect on N availability should be reaffirmed in crops with longer production cycles. Finally, some interesting findings with regard to plant composition also warrant further in‐depth investigation, e.g., Zn uptake by lettuce in acidified treatments was significantly higher than that of non‐acidified treatments. This implies that product pre‐treatment may play a future role in biofortification and amelioration of (trace) element composition of crops (arguably for crops with longer production cycles). Improving crop nutritional value by increased uptake of micronutrients is receiving increasing attention.

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“…The enhanced microbial degradation of organic matter and emission of carbon (C), particularly as methane, results in an increase in the proportion of total N that is more readily plant available (i.e., in increase in the ratio of ammonium-N (NH + 4 -N) to total N, typically to >70%), a decrease in the C:N ratio and a lower organic matter and dry matter (DM) content (Webb and Hawkes, 1985;Möller et al, 2008;Tampio et al, 2016). Anaerobic digestion can significantly reduce greenhouse gas and odor emissions (if fugitive emissions are minimized) in comparison with the feedstock (Massé et al, 2011;Battini et al, 2014), and produces a more sanitized product when the feedstock is manure (Orzi et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Advanced Processing of Food Waste Based Digestate for Mitigating Nitrogen Losses in a Winter Wheat Crop

Sánchez‐Rodríguez

Carswell

Shaw

et al. 2018

Front. Sustain. Food Syst.

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The anaerobic digestion of food waste converts waste products into "green" energy. Additionally, the secondary product from this process is a nutrient-rich digestate, which could provide a viable alternative to synthetically-produced fertilizers. However, like fertilizers, digestate applied to agricultural land can be susceptible to both ammonia (NH 3 ) and nitrous oxide (N 2 O) losses, having negative environmental impacts, and reducing the amount of N available for crop uptake. Our main aim was to assess potential methods for mitigating N losses from digestate applied to a winter wheat crop and subsequent impact on yield. Plot experiments were conducted at two UK sites, England (North Wyke-NW) and Wales (Henfaes-HF), to assess NH 3 and N 2 O losses, yield and N offtake following a single band-spread digestate application. Treatments examined were digestate (D), acidified-digestate (AD), digestate with the nitrification inhibitor DMPP (D+NI), AD with DMPP (AD+NI), and a zero-N control (C). Ammonium nitrate (NH 4 NO 3 ) fertilizer N response plots (from 75 to 300 kg N ha −1 ) were included to compare yields with the organic N source. Across both sites, cumulative NH 3 -N losses were 27.6% from D and D+NI plots and 1.5% for AD and AD+NI of the total N applied, a significant reduction of 95% with acidification. Cumulative N 2 O losses varied between 0.13 and 0.35% of the total N applied and were reduced by 50% with the use of DMPP although the differences were not significant. Grain yields for the digestate treatments were 7.52-9.21 and 7.23-9.23 t DM ha −1 at HF and NW, respectively. Yields were greater from the plots receiving acidified-digestate relative to the non-acidified treatments but the differences were not significant. The yields obtained for the digestate treatments ranged between 84.2% (D+NI) and 103.6% (D) of the yields produced by the same N rate from an inorganic source at HF. Advanced processing of digestate reduced N losses providing an environmentally sound option for N management.

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Agronomic characteristics of five different urban waste digestates

Cited by 121 publications

References 45 publications

Effect of Fertilizer and Storage Period on Oxidative Stability and Color of Rapeseed Oils

Effect of Fertilizer and Storage Period on Oxidative Stability and Color of Rapeseed Oils

Does acidification increase the nitrogen fertilizer replacement value of bio‐based fertilizers?

Advanced Processing of Food Waste Based Digestate for Mitigating Nitrogen Losses in a Winter Wheat Crop

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