Degradation of cefquinome in spiked milk as a model for bioremediation of dairy farm waste milk containing cephalosporin residues

2015 ◽  
Vol 118 (4) ◽  
pp. 901-910 ◽  
Author(s):  
R.A. Horton ◽  
L.P. Randall ◽  
V. Bailey-Horne ◽  
K. Heinrich ◽  
M. Sharman ◽  
...  
Keyword(s):  
Dairy Farm ◽  
Waste Milk ◽  
Farm Waste

scholarly journals Coupling hydrothermal liquefaction and membrane distillation to treat anaerobic digestate from food and dairy farm waste

2018 ◽  
Vol 267 ◽  
pp. 408-415 ◽  
Author(s):  
Unnati Rao ◽  
Roy Posmanik ◽  
Lindsay E. Hatch ◽  
Jefferson W. Tester ◽  
Sharon L. Walker ◽  
...  
Keyword(s):  
Dairy Farm ◽  
Membrane Distillation ◽  
Hydrothermal Liquefaction ◽  
Anaerobic Digestate ◽  
Farm Waste

scholarly journals Assessment of the biochemical methane potential of mono- and co-digested dairy farm wastes

2019 ◽  
Vol 38 (1) ◽  
pp. 88-99 ◽  
Author(s):  
Mohamad Adghim ◽  
Mohamed Abdallah ◽  
Suhair Saad ◽  
Abdallah Shanableh ◽  
Majid Sartaj
Keyword(s):  
Methane Production ◽  
Dairy Farm ◽  
Gompertz Model ◽  
Maximum Error ◽  
Methane Yield ◽  
Cow Manure ◽  
Biochemical Methane Potential ◽  
Volatile Solids ◽  
Waste Milk ◽  
Methane Potential

This study aimed to evaluate the methane potential of mono- and co-digested dairy farm wastes. The tested substrates included manure from lactating, dry, and young cows, as well as waste milk and feed waste. The highest methane yield was achieved from the lactating cow manure, which produced an average of 412 L of CH4 kg−1 volatile solids, followed by young and dry cow manures (332 and 273 L of CH4 kg−1 volatile solids, respectively). Feed and milk yielded an average of 325 and 212 L of CH4 kg−1 volatile solids, respectively. Co-digesting the manures from lactating and young cows with feed improved methane production by 7%. However, co-digesting the dry cow manure with feed achieved only 85% of the calculated methane yield. Co-digesting manure and milk at a ratio of 70:30 enhanced the methane potential from lactating, dry, and young cow manures by 19, 30, and 37%, respectively. Moreover, co-digesting lactating, dry, and young cow manures with milk at a ratio of 30:70 enhanced the methane yield by 60, 30, and 88%, respectively. The cumulative methane production of all samples was accurately described using the Gompertz model with a maximum error of 10%. Carbohydrates contributed the most to methane potential, while proteins and lipids were limiting.

scholarly journals Integrated Use of Co-Compost with Lignite Fly Ash on Yield and Nutrient Uptake of Certain Crops

2021 ◽  
Vol 04 (10) ◽  
Author(s):  
Angayarkanni, A ◽  
Keyword(s):  
Fly Ash ◽  
Field Experiments ◽  
Crop Residues ◽  
Dairy Farm ◽  
Clay Loam ◽  
Combined Application ◽  
Lignite Fly Ash ◽  
Loam Soil ◽  
Farm Waste

A field experiment was conducted to know the response of crops to combined application of co compost and lignite fly ash. Field experiments were conducted in experimental farm (rice and maize) and farmers holding (groundnut and brinjal) to study the response of certain crops to the application of co composts and lignite fly ash grown in clay loam and sandy clay loam soil, respectively. The treatment consisted of Dairy Farm Waste + Crop Residues, Pressmud+ Crop Residues, Dairy Farm Waste + Crop Residues + LFA @5 t ha-1, Dairy Farm Waste + Crop Residues + LFA @10 t ha-1, Dairy Farm Waste + Crop Residues + LFA @15 t ha-1, Pressmud + crop residues + LFA @5 t ha-1, Pressmud + crop residues + LFA @10 t ha-1and Pressmud + crop residues + LFA @15 t ha-1 .The grain and straw yield in rice and maize, pod and haulm yield in groundnut and fruit yield of brinjal were recorded during harvest. Differences in yield of crops between the treatments indicate significantly different effects on soil fertility and crop yield after long-term fertilization. The uptake of nutrients increased linearly with levels of LFA tried and it was higher when it was applied with co compost of pressmud and crop residue. The addition of co composts alone or with graded dose of lignite fly ash significantly improved the physical properties of the soil.

Nitrification potential of attached biofilms in dairy farm waste stabilisation ponds

2000 ◽  
Vol 42 (10-11) ◽  
pp. 195-202 ◽  
Author(s):  
R. J. Craggs ◽  
C. C. Tanner ◽  
J. P. Sukias ◽  
R. J. Davies-Colley
Keyword(s):  
New Zealand ◽  
Dairy Farm ◽  
Pond Water ◽  
Oxygen Availability ◽  
Ammonia Toxicity ◽  
Waste Stabilisation Ponds ◽  
Nitrification Potential ◽  
N Removal ◽  
Mechanical Aeration ◽  
Farm Waste

Dairy farm waste stabilisation ponds are a major source of ammoniacal-N to surface waters in New Zealand. Ammoniacal-N is of particular concern in New Zealand where native aquatic invertebrates appear to be very sensitive to ammonia toxicity. This paper investigates improvement of ammoniacal-N nitrification in dairy farm facultative ponds with mechanical aeration and provision of biofilm attachment surfaces. Biofilm was grown on surfaces at different depths (0.1 m, 0.2 m and 0.6 m) under three mechanical aeration regimes (no aeration, night-only aeration and continuous aeration). Nitrification potential of biofilm was determined as the rate of ammoniacal-N removal in bioassays with ammoniacal-N spiked pond water or culture medium under controlled conditions (20°C, pH 7.0, constant stirring, DO 2–3 g m−3, dark). The nitrification potentials (0.30 g N m−2 biofilm d−1 to 2.17 g N m−2 biofilm d−1) of biofilm-coated surfaces were largely controlled by oxygen availability and consistency of supply in the pond. Nitrification potentials were high where oxygen availability was high, such as close to the pond surface where atmospheric re-aeration and algal photosynthesis were prevalent. Nitrification potentials of biofilms incubated at depth were enhanced by mechanical aeration, with higher values achieved under the continuous aeration regime and at more turbulent sites closer to the aerator.

Transport of Testosterone and Estrogen from Dairy-Farm Waste Lagoons to Groundwater

2008 ◽  
Vol 42 (15) ◽  
pp. 5521-5526 ◽  
Author(s):  
Shai Arnon ◽  
Ofer Dahan ◽  
Sara Elhanany ◽  
Keren Cohen ◽  
Irena Pankratov ◽  
...  
Keyword(s):  
Dairy Farm ◽  
Waste Lagoons ◽  
Farm Waste

Addressing on-farm management to enhance pasture productivity and persistence

2013 ◽  
pp. 241-244
Author(s):  
W.N. Reynolds
Keyword(s):  
Management Strategies ◽  
Dairy Farm ◽  
Stocking Rate ◽  
Pasture Management ◽  
Pasture Production ◽  
Operating Profit ◽  
The North ◽  
The Cost ◽  
On Farm ◽  
Attention To Detail

Following the 2007/08 drought, we experienced poor pasture production and persistence on our dairy farm in north Waikato, leading to decreased milksolids production and a greater reliance on bought-in feed. It is estimated that the cost of this to our farming operation was about $1300 per hectare per year in lost operating profit. While climate and black beetle were factors, they did not explain everything, and other factors were also involved. In the last 3 years we have changed our management strategies to better withstand dry summers, the catalyst for which was becoming the DairyNZ Pasture Improvement Focus Farm for the north Waikato. The major changes we made were to reduce stocking rate, actively manage pastures in summer to reduce over-grazing, and pay more attention to detail in our pasture renewal programme. To date the result has been a reduced need for pasture renewal, a lift in whole farm performance and increased profitability. Keywords: Focus farm, over-grazing, pasture management, pasture persistence, profitability

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