Sequential valorisation of microalgae biomass grown in pig manure treatment photobioreactors

The effects of agitation, liquid-only manure, depth and time on odour emission rates were investigated. Manure storage tanks were filled to incremental depths every two weeks. At each depth odour samples were collected twice. The second sample was collected seven days after the first. Odour concentration was measured with an olfactometer. Three different pig-manure treatments were investigated. In one treatment, slurry manure in a storage tank was agitated before and during odour sampling. In a second treatment, the settlable solids in manure were removed gravimetrically over 24 hours and liquid manure was pumped to a storage tank. In the third treatment (control), odour samples were collected from unseparated and undisturbed slurry manure. Overall, the odour emission rates in the agitated manure treatment ranged between 0.39 and 1.02 ou s−1 m−2, increased with depth and decreased with time, i.e. after seven days at each depth. In the liquid-only manure treatment, the emission rates ranged between 0.09 and 0.69 ou s−1 m−2, increased with depth but the effect of time was not evident. In the control treatment, the emission rates ranged between 0.20 and 0.66 ou s−1 m−2 and increased with depth on the first odour sampling day but decreased with depth on the second sampling day.

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Pig manure treatment with housefly (Musca domestica) rearing – an environmental life cycle assessment

Journal of Insects as Food and Feed ◽

10.3920/jiff2014.0021 ◽

2015 ◽

Vol 1 (3) ◽

pp. 195-214 ◽

Cited By ~ 19

Author(s):

M. Roffeis ◽

B. Muys ◽

J. Almeida ◽

E. Mathijs ◽

W.M.J. Achten ◽

...

Keyword(s):

Life Cycle Assessment ◽

Life Cycle ◽

Agricultural Land ◽

Development Stage ◽

Pig Manure ◽

Future Research ◽

Land Occupation ◽

Manure Treatment ◽

Conceptual Design Phase ◽

Depletion Potential

The largest portion of a product’s environmental impacts and costs of manufacturing and use results from decisions taken in the conceptual design phase long before its market entry. To foster sustainable production patterns, applying life cycle assessment in the early product development stage is gaining importance. Following recent scientific studies on using dipteran fly species for waste management, this paper presents an assessment of two insect-based manure treatment systems. Considering the necessity of manure treatment in regions with concentrated animal operations, reducing excess manure volumes with the means of insects presents a potentially convenient method to combine waste reduction and nutrient recovery. An analytical comparison of rearing houseflies on fresh and pre-treated pig manure is reported with reference to agricultural land occupation, water and fossil depletion potential. Based on ex-ante modelled industrial scale rearing systems, the driving factors of performance and environmentally sensitive aspects of the rearing process have been assessed. Expressed per kg manure dry matter reduction, the estimated agricultural land occupation varied between 1.4 and 2.7 m2yr, fossil depletion potential ranged from 1.9 to 3.4 kgoil eq and the obtained water depletion potential was calculated from 36.4 to 65.6 m3. System improvement potential was identified for heating related energy usage and water consumption. The geographical context and the utility of the co-products, i.e. residue substrates and insect products, were determined as influential variables to the application potential of this novel manure treatment concept. The results of this study, applied at the earliest stages of the design of the process, assist evaluation of the feasibility of such a system and provide guidance for future research and development activities.

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Economic analyses of pig manure treatment options in Ireland

Bioresource Technology ◽

10.1016/j.biortech.2011.11.043 ◽

2012 ◽

Vol 105 ◽

pp. 15-23 ◽

Cited By ~ 38

Author(s):

Tereza Nolan ◽

Shane M. Troy ◽

Stephen Gilkinson ◽

Peter Frost ◽

Sihuang Xie ◽

...

Keyword(s):

Treatment Options ◽

Pig Manure ◽

Manure Treatment ◽

Economic Analyses

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Systems for Pig Manure Treatment in The Netherlands

10.13031/2013.3511 ◽

2001 ◽

Author(s):

Roland W. Melse ◽

Peter de Gijsel

Keyword(s):

The Netherlands ◽

Pig Manure ◽

Manure Treatment

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Odour abatement in the integrated reactor concept for simultaneous treatment of liquid and solid pig manure fractions

Water Science & Technology ◽

10.2166/wst.2004.0297 ◽

2004 ◽

Vol 50 (4) ◽

pp. 327-334 ◽

Cited By ~ 2

Author(s):

A.H.M. Veeken ◽

V. de Wilde ◽

H.C. Willers ◽

H.V.M. Hamelers

Keyword(s):

Nitric Acid ◽

New Technologies ◽

Bubble Column ◽

Liquid Fraction ◽

Pig Manure ◽

Simultaneous Treatment ◽

Organic Fertiliser ◽

Nitrogen Fertiliser ◽

Manure Treatment ◽

Reduce Emissions

New technologies are needed for manure treatment that can capture nutrients, reduce emissions of ammonia and nuisance odours, and kill harmful pathogens. A reactor concept was developed for simultaneous treatment of separately collected liquid and solid fractions of pig manure. The liquid fraction is concentrated by evaporating the water using energy from the composting system and at the same time scrubbing ammonia from the composting off-gas by acidifying the urine to pH 4 with nitric acid. This results in two marketable products, a concentrated liquid nitrogen fertiliser (NH4NO3) without phosphorus, and a stabilised, solid organic fertiliser, which is free of pathogens and weeds. By connecting the two reactor systems, emissions of ammonia and odours are abated as ammonia emitted from the composting is trapped in the liquid fraction and odorous compounds emitted from the liquid are degraded in the composting reactor. The concept was physically simulated by coupling a 80-L compost reactor to a 10-L bubble column. Operation of the bench-scale system showed that the concept is very promising. All nutrients were captured, and emissions of ammonia and odours were almost completely abated.

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Life cycle assessment of biological pig manure treatment versus direct land application − a trade-off story

Resources Conservation and Recycling ◽

10.1016/j.resconrec.2017.12.010 ◽

2018 ◽

Vol 131 ◽

pp. 86-98 ◽

Cited By ~ 12

Author(s):

L. Corbala-Robles ◽

W.N.D. Sastafiana ◽

V. Van linden ◽

E.I.P. Volcke ◽

T. Schaubroeck

Keyword(s):

Life Cycle Assessment ◽

Life Cycle ◽

Land Application ◽

Pig Manure ◽

Trade Off ◽

Manure Treatment

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Ratio of C:N in culture media of silk worm, Tubifex sp.

AQUATIC SCIENCE & MANAGEMENT ◽

10.35800/jasm.2.1.2014.12391 ◽

2014 ◽

Vol 2 (1) ◽

pp. 19

Author(s):

Jhonly Solang ◽

Henneke Pangkey ◽

Stenly Wullur ◽

Sartje Lantu

Keyword(s):

Culture Media ◽

C:N Ratio ◽

Chicken Manure ◽

Pig Manure ◽

Running Water ◽

Manure Treatment ◽

Soybean Curd ◽

Silk Worm ◽

Soybean Curd Residue ◽

And Control

Title (Bahasa Indonesia): Rasio C:N pada media kultur cacing sutra, Tubifex sp. This study aimed to determine the C:N ratio on each medium for the growth of the sludge worm. This study used mud and soybean curd residue (treatment A), mud and chicken manure (treatment B), mud and pig manure (treatment C), and control (mud only) (K) as culture media of the sludge worm (Tubifex sp.). The decomposition process was proceeding for six days, and then the sludge worms were stocked with initial weight of 30 grams per container. Culture period was 21 days in running water systems. The resulting C:N ratio was 60.5 for treatment A, 45.8 for treatment B, 36 for treatment C and 35 for K. The soybean curd residue and mud medium gave the highest influence on the growth of the sludge worm, followed by pig manure and mud, chicken manure and mud, and then mud (control). Penelitian ini bertujuan untuk menentukan perbandingan C:N ratio dalam media budidaya untuk pertumbuhan cacing sutra. Penelitian ini menggunakan lumpur dan ampas tahu (perlakuan A), lumpur dan kotoran ayam (perlakuan B), serta lumpur dan kotoran babi (perlakuan C) dan perlakuan K (kontrol: hanya lumpur) sebagai media kultur cacing sutra (Tubifex sp). Proses dekomposisi dilakukan selama 6 hari, kemudian dilakukan penebaran cacing sutra dengan berat awal 30 gram/wadah penelitian. Waktu pemeliharaan dilakukan selama 21 hari dalam sistem air mengalir. Hasil penelitian menunjukkan rasio C:N sebesar 60,55 untuk perlakuan A, 45,85 untuk perlakuan B, 36,08 untuk perlakuan C, dan 35,25 untuk K. Media yang menggunakan ampas tahu dan lumpur memberikan pengaruh tertinggi terhadap pertumbuhan cacing sutra, kemudian disusul oleh media kotoran babi dan lumpur, media kotoran ayam dan lumpur dan terendah media lumpur (kontrol).

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Combined application of animal manure and straw benefit soil fauna community in dryland farming

10.5194/soil-2021-132 ◽

2021 ◽

Author(s):

Ling Sun ◽

Jinggui Wu

Keyword(s):

Soil Fauna ◽

Diversity Index ◽

Animal Manure ◽

Chicken Manure ◽

Pig Manure ◽

Dominance Index ◽

Combined Application ◽

Manure Treatment ◽

Maize Straw ◽

Richness Index

Abstract. Addition of organic wastes such as animal manures and straw is a feasible practice to alleviate soil degradation, and the mitigation is closely related to the activities of soil-dwelling fauna. In this study, the community structure of soil fauna were compared under four treatment regimes: straw only, and straw combined with the use of chicken manure, ox manure and pig manure. A total of 12459 soil fauna were captured, belonging to 23 groups. Treatments animal manure combined with straw led to increased the number of soil fauna groups and individuals, diversity index, richness index and dominance index, while reduced the evenness index of soil fauna. Compared to the other treatments, maize straw plus chicken manure and maize straw plus pig manure treatments had the largest number of soil fauna groups. Among all the treatments, Oribatida, Astigmata, Desoria and Folsomia were the dominant species, accounting for 69.94 % of the total number of individuals. Maize straw plus pig manure treatment had the largest diversity index soil fauna community. The richness index of soil fauna community in maize straw plus chicken manure and maize straw plus pig manure treatments were higher compared to other treatments. The highest dominance index of soil fauna was recorded in maize straw plus ox manure treatment. In conclusion, our findings suggested that animal manure combined with straw, especially the application of maize straw plus pig manure was the most effective treatment for enhancing soil fauna community.

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The Residue of Tetracycline Antibiotics in Soil and Vegetable and Its Effect On The Diversity of Soil Bacterial Community

10.21203/rs.3.rs-92742/v1 ◽

2020 ◽

Author(s):

Longshui Xu ◽

Weizhong Wang ◽

Weihong Xu

Keyword(s):

Microbial Community ◽

Soil Microbial Community ◽

Large Scale ◽

High Throughput Sequencing ◽

Chicken Manure ◽

Pig Manure ◽

Livestock Manure ◽

Tetracycline Antibiotics ◽

Soil Microbial ◽

Manure Treatment

Abstract [Background] Tetracycline antibiotics (TCs) are a broad-spectrum antibiotic, widely used in livestock and poultry breeding. The residue of tetracycline antibiotics in animal manure may cause changes of soil microbial community. [Methods] On the basis of the investigation and analysis of TCs pollution in the soil of main vegetable bases and the livestock manure of major large-scale farms in Chongqing, China, the effects of tetracycline antibiotics on the structure and diversity of soil microbial community were investigated by high-throughput sequencing. [Results] The TCs content in soil was increased by applying livestock manure. The contents of TC, OTC and CTC in the soil under pig manure treatment were 171.07-660.20 μg·kg-1, 25.38-345.78 μg·kg-1 and 170.77-707.47 μg·kg-1, respectively. The contents of TC, OTC and CTC in the soil under the treatment of chicken manure were 166.62-353.61 μg·kg-1, 122.25-251.23 μg·kg-1 and 15.12-80.91 μg·kg-1 respectively. The content of tetracycline antibiotics (TCs) in edible parts of Brassica juncea var. gemmifera was increased after livestock manure treatment, among which pig manure had the greatest influence on the increase of TCs content, and the larger the dosage of pig manure was, the more significant the increase of TCs content was. Proteobacteria, Acidobacteria, Actinobacteria, Chioroflexi and bacteroidetes under livestock manure treatment were the dominant phyla, accounting for 85.2%-92.4% of the total abundance of soil bacteria. [Conclusions] The soil OTUs under the treatment of pig manure was higher than that under the treatment of chicken manure. Biogas residue after fermentation treatment can effectively reduce the environmental and ecological risks caused by antibiotic residues.

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