Silage effluent management: A review

Gebrehanna, M.M.; Gordon, Robert J.; Madani, Ali; VanderZaag, Andrew; Wood, J. D.

doi:10.1016/j.jenvman.2014.04.012

Cited by 66 publications

(59 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Unlike, the chemical method prolonged the time of EP. Moreover, EP indicates loss of DP, as well as a reduction in silage nutritional value, besides being a water pollutant (GEBREHANNA et al, 2014). Average levels for silage dry matter (SiDM), silage dry phytomass recovery (SiDPR), and effluent production (EP) at the pre-drying of oat silage, dehydrated by mechanical and chemical methods, associated with different dehydration times.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Mechanical and chemical dehydration for pre-drying of black oat silage

Carneiro

Neumann

Heker

et al. 2017

SCA

View full text Add to dashboard Cite

This study aimed to evaluate mechanical and chemical methods of forage dehydration in the production of black oat pre-dried silage (Avena strigosa Schreb) under different dehydration times. The experiment was conducted in a randomized block experimental design with five replications and arranged in a 2 x 6 factorial scheme. We assessed two methods of dehydration, mechanical and chemical, over six dewatering times, being made at 0, 3, 6, 9, 12, and 15 days after cutting or application of glyphosate. Harvest took place at 88 days after emergence, at pre-flowering. We evaluated dry biomass production at harvest, dry matter losses during dehydration in the field, losses during ensiling, gauging effluent output, and pre-dried silage chemical composition. There was an interaction between dehydration method and harvest time for most of the production characteristics. Chemical dehydration showed an enhanced dry matter recovery at the field level, however, unsuitable for pre-dried silage. The longer the dehydration period, the lower the losses for both analyzed methods; nevertheless, the chemical method reached unsatisfactory DM contents to produce good quality silage. Key words: Avena strigosa Schreb. Bromatology. Winter cereals. Conserved forage. Dry matter recovery. ResumoObjetivou-se avaliar a interferência dos métodos mecânico e químico de desidratação da forragem na confecção de silagem pré-secada de aveia-preta (Avena strigosa Schreb), sob diferentes tempos de desidratação. O experimento foi realizado em delineamento de blocos ao acaso, com 5 repetições, em esquema fatorial 2 x 6, sendo dois métodos de desidratação, mecânico e químico, sobre seis tempos de desidratação, sendo 0, 3, 6, 9, 12 e 15 dias após o corte ou aplicação do herbicida glifosato. A colheita se deu aos 88 dias após emergência, em estádio de pré-florescimento. Foram avaliadas produção de fitomassa seca no momento da colheita, perdas de fitomassa seca durante a desidratação à campo, perdas durante a ensilagem, com aferição da produção de efluentes, além da composição bromatológica da silagem pré-secada. Houve interação entre método de desidratação x época de colheita, para a maioria

show abstract

Section: Resultsmentioning

confidence: 99%

“…Moreover, EP indicates loss of DP, as well as a reduction in silage nutritional value, besides being a water pollutant (GEBREHANNA et al, 2014). In addition, Table 1 also denotes a significant interaction for pH of plant parameters (pHP) and of silage (pHS) between times and methods of dehydration.…”

Section: Resultsmentioning

confidence: 99%

Mechanical and chemical dehydration for pre-drying of black oat silage

Carneiro

Neumann

Heker

et al. 2017

SCA

View full text Add to dashboard Cite

show abstract

“…In recent years the practice is to allow the grass to wilt or dry out as much as possible before storage. This means there is less effluent produced during fermentation because there is less moisture available [8]. Although this has helped reduce the volume of effluent produced, the problem has not been eliminated because the reduced effluent volume can still be sufficient to cause significant concrete damage.…”

Section: Introductionmentioning

confidence: 99%

“…Although this has helped reduce the volume of effluent produced, the problem has not been eliminated because the reduced effluent volume can still be sufficient to cause significant concrete damage. Furthermore it is not always possible to allow grass to wilt before storage due to unpredictable weather and time constraints [8].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Resistance of geopolymer and Portland cement based systems to silage effluent attack

Aiken

Sha

Kwasny

et al. 2017

Cement and Concrete Research

100

View full text Add to dashboard Cite

Abstract:Traditional Portland cement (PC) concrete has been used for many years in the agricultural industry for the construction of silos and silage effluent storage facilities. However, the acidic nature of the silage effluent produced by silage has led to severe degradation of PC concrete which in turn has significant environmental and financial implications. This study compares the resistance of PC and geopolymer (GP) mortars and pastes to silage effluent over 12 months. The GP samples displayed increased resistance to silage effluent in terms of mass and strength loss. Analysis of microstructure suggests that the increased stability of the reaction products is the main factor behind increased silage effluent resistance when compared with PC. It was also found that pulverised fuel ash (PFA) and ground granulated blast furnace slag (GGBS) blends with a higher PFA content may offer increased long term silage effluent resistance due to the nature of the main binder gel produced in PFA dominant systems.

show abstract

The replacement of maize (Zea mays L.) by cup plant (Silphium perfoliatum L.) as biogas substrate and its implications for the energy and material flows of a large biogas plant

Cossel

Amarysti

Wilhelm

et al. 2020

Biofuels Bioprod Bioref

View full text Add to dashboard Cite

Excessive cultivation of maize (Zea mays L.) as a biogas substrate has fired debate about potential land‐use change effects of bioenergy cropping systems. Cup plant ( Silphium perfoliatum L.) is a perennial biogas crop that provides more environmental services than maize. This study investigated (i) how to replace maize with cup plant as a biogas substrate in a large‐scale biogas plant located in southwest Germany, and (ii) how to optimize the energy and material cycles of such a biogas plant given the new feedstock. The biogas plant produces 1000 m3 biogas per hour with plans for it to be combined with a large dairy farm (1000 dairy units). It was found that the substitution of maize with cup plant as a biogas substrate results in a methane yield reduction of 10% to 20% due to lower biomass yields. However, there exists a strong potential to increase both biomass yields and biogas substrate quality of cup plant by optimizing establishment procedures and better genotypes. Furthermore, cup plant provides food and shelter for open land animals, including birds and insects, and could hence be a suitable alternative to maize for large biogas plants, being more environmentally beneficial. Extracting proteins from cup‐plant biomass could also help replace soy with locally produced protein for feeding cattle. Hydrothermal carbonization is a promising tool for closing nutrient cycles and for extracting phosphate from digestate, but more research is needed before it can be put into practice. © 2020 The Authors. Biofuels, Bioproducts and Biorefining published by Society of Chemical Industry and John Wiley & Sons, Ltd.

show abstract

Silage effluent management: A review

Cited by 66 publications

References 34 publications

Mechanical and chemical dehydration for pre-drying of black oat silage

Mechanical and chemical dehydration for pre-drying of black oat silage

Resistance of geopolymer and Portland cement based systems to silage effluent attack

The replacement of maize (Zea mays L.) by cup plant (Silphium perfoliatum L.) as biogas substrate and its implications for the energy and material flows of a large biogas plant

Contact Info

Product

Resources

About