Nutrient Recovery From the Liquid Fraction of Digestate by Clinoptilolite

2017 ◽  
Vol 45 (6) ◽  
pp. 1500153 ◽  
Author(s):  
Nazlı Pelin Kocatürk-Schumacher ◽  
Sander Bruun ◽  
Kor Zwart ◽  
Lars Stoumann Jensen
Keyword(s):  
Liquid Fraction ◽  
Nutrient Recovery

scholarly journals Duckweed from a Biorefinery System: Nutrient Recovery Efficiency and Forage Value

Energies ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 5261
Author(s):  
Marcin Sońta ◽  
Andrzej Łozicki ◽  
Magdalena Szymańska ◽  
Tomasz Sosulski ◽  
Ewa Szara ◽  
...  
Keyword(s):  
Growth Medium ◽  
Nutritional Value ◽  
Liquid Fraction ◽  
Recovery Process ◽  
Nutrient Recovery ◽  
Growth Media ◽  
Fresh Matter ◽  
The Media ◽  
Forage Value ◽  
Interdisciplinary Study

This paper presents the results of an interdisciplinary study aimed at assessing the possibility of using duckweed to purify and recover nutrients from the effluent remaining after struvite precipitation and ammonia stripping from a liquid fraction of anaerobic digestate in a biorefinery located at a Dutch dairy cattle production farm. The nutritional value of duckweed obtained in a biorefinery was assessed as well. Duckweed (Lemna minuta) was cultured on a growth medium with various concentrations of effluent from a biorefinery (EFL) and digested slurry (DS) not subjected to the nutrient recovery process. The study’s results showed that duckweed culture on the media with high contents of DS or EFL was impossible because they both inhibited its growth. After 15 days of culture, the highest duckweed yield was obtained from the ponds with DS or EFL contents in the medium reaching 0.39% (37.8 g fresh matter (FM) and 16.8 g FM per 8500 mL of the growth medium, respectively). The recovery of N by duckweed was approximately 75% and 81%, whereas that of P was approximately 45% and 55% of the growth media with EFL0.39% and DS0.39%, respectively. Duckweed obtained from the biorefinery proved to be a valuable high-protein feedstuff with high contents of α-tocopherol and carotenoids. With a protein content in duckweed approximating 35.4–36.1%, it is possible to obtain 2–4 t of protein per 1 ha from EFL0.39% and DS0.39% ponds, respectively.

scholarly journals Nutrient recovery from anaerobically digested organic wastes

2007 ◽  
pp. 97-107
Author(s):  
Deshai Botheju ◽  
Oystein Svalheim ◽  
Bjorn Rydtun ◽  
Jo-Ela Johansen ◽  
Rune Bakke
Keyword(s):  
Liquid Fraction ◽  
Nitrogen Loss ◽  
Organic Fertilizer ◽  
Significant Loss ◽  
Organic Wastes ◽  
Nutrient Recovery ◽  
Nitrite Accumulation ◽  
Evaporative Concentration ◽  
Ammonium N ◽  
Soil Enhancement

Effluents (digestates) resulting from anaerobic digestion of wet organic wastes can berecycled as fertilizers. Separation of such digestates into a wet and a dry fraction is common.The solid fraction is often sold as a soil enhancement product while the liquid fraction isusually discarded as wastewater. A large portion of the digestate nutrients is dissolved as ionsin the liquid. The aim of this study is to establish an efficient way to convert this into a liquid"organic fertilizer". Enhancement of the nutrient concentration is necessary in order to makethe final product commercially acceptable. Direct evaporative concentration is not suitable asit would lead to a significant loss of ammonia due to the fact that most of the availablenitrogen in these digestates is present in the ammonium/ammonia form. Thus stabilizing theproduct by partial nitrification prior to evaporation is proposed based on a series ofexperiments conducted to evaluate the appropriateness of this approach.The ammonium-N concentration of the digestate used was 1.7 g/L. The nitrification does notappear to be inhibited by ammonia, nitrate or nitrite accumulation, except when pH > 7.5, asituation that can be avoided by regulating the feeding rate based on pH measurements.Significant nitrite accumulation was not observed either. Nitrification is however consistentlylimited by alkalinity so that only about 75% of the ammonia can be converted to nitratewithout alkalinity supplementation. The nitrification brings the pH down below 5.0 where theremaining ammonia is present as> 99% NH/. At this condition the nitrified digestate can beevaporated without a significant nitrogen loss and the product is recognized to be a highquality liquid fertilizer. It is suggested that the production of concentrated partially nitrifiedorganic fertilizers can become a sustainable way of nutrient recovery from anaerobicdigestates originating from municipal organic wastes.

Does the combination of biochar and clinoptilolite enhance nutrient recovery from the liquid fraction of biogas digestate?

2016 ◽  
Vol 38 (10) ◽  
pp. 1313-1323 ◽  
Author(s):  
Nazlı Pelin Kocatürk-Schumacher ◽  
Kor Zwart ◽  
Sander Bruun ◽  
Lijbert Brussaard ◽  
Lars Stoumann Jensen
Keyword(s):  
Liquid Fraction ◽  
Nutrient Recovery ◽  
Biogas Digestate

Increasing corn distillers solubles alters the liquid fraction of the ruminal microbiome

2017 ◽  
Vol 95 (8) ◽  
pp. 3540
Author(s):  
J. C. McCann ◽  
J. R. Segers ◽  
H. Derakhshani ◽  
T. L. Felix ◽  
E. Khafipour ◽  
...  
Keyword(s):  
Liquid Fraction ◽  
Corn Distillers

Nutrients demand of cactus forage

2019 ◽  
Author(s):  
João Macedo Moreira ◽  
Aldrin Martin Pérez-Marin ◽  
Jucilene Silva Araújo ◽  
George Rodrigues Lambais ◽  
Aldo Sales
Keyword(s):  
Block Design ◽  
Nutrient Utilization ◽  
Nutrient Recovery ◽  
Fertilizer Treatment ◽  
Treatment Control ◽  
Mineral Fertilization ◽  
Randomized Block Design ◽  
Nutrient Use ◽  
Different Types ◽  
Semi Arid Region

The study aimed to evaluate the efficiency of nutrient use in three cactus forage (CF) cultivars (Opuntia stricta and Nopalea cochenillifera), 365 days after planting under different types of fertilizer in two research sites (Condado and Riachão) of the semi-arid region of Paraiba state, Brazil. The experimental design was a randomized block design with treatments in a factorial scheme (3×4), three cultivars of CF (Orelha de elefante Mexicana; Miúda; Bahiana), and four fertilizer treatment (Control; Manure; Manure with Nitrogen; Mineral fertilization) with four replications. The CF cultivars did not differ significantly in nutrient use. That means of physiological efficiency by CF cultivars were 1.62, and 2.36 kg of biomass per kg of nutrient applied in Condado and Riachão, respectively. The efficiency of nutrient recovery was 16% for the Condado, according the following order: K> P> Ca> N> C = Mg and 12% for Riachão: K> P> N> C = Ca = Mg. In the two research sites, the treatment with mineral fertilization significantly increased the efficiency use of N, P and K in comparison to the other treatments. The average for efficiency of nutrient utilization was 25% and 19% for Condado and Riachão, respectively, in the following order for Condado: K> P> N> Ca = Mg> C, and Riachão: K> P> N> C> Mg = Ca. In a CF production system aiming to obtain a yearly harvest cycle, it is necessary to replenish of K and P to maintain the nutritional balance between the soil and CF plant.

Applying process modeling with GPS-X™ for Understanding the impact of the WASSTRIP™ process on nutrient recovery systems

2016 ◽  
Vol 2016 (3) ◽  
pp. 504-518
Author(s):  
Malcolm Fabiyi ◽  
Ahren Britton ◽  
Peter Schauer ◽  
Andy Shaw ◽  
Rajeev Goel
Keyword(s):  
Process Modeling ◽  
Nutrient Recovery ◽  
The Impact
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