Essays about: "digestate"

Showing result 21 - 25 of 60 essays containing the word digestate.

1. 21. Nutrient dynamics in pak choi cultivation fertilized with biogas digestate : effects of non-nutrient digestate elements and amendment with mineral nutrients

   University essay from SLU/Department of Biosystems and Technology (from 130101)

   Author : Kristina Weimers; [2020]
   Keywords : Biogas digestate; pak choi; Brassica rapa; ssp. chinensis; ‘Joy Choi’; greenhouse; soilless production; peat-based growing media; biostimulants; nitrification; nutrient recovery efficiency; phosphorus; sulphur;

   Abstract : Anaerobic digestion in biogas plants produces renewable energy and a residue which is rich in plant nutrients. This residue is called digestate. Today, these digestates are mostly spread directly onto fields as manure. READ MORE

3. 22. Stimulating national biogas production : The case of Swedish agricultural wastemanagement

   University essay from Linköpings universitet/Industriell miljöteknik

   Author : Manoj Dammur; [2020]
   Keywords : Biofuels; renewable energy; biogas; Swedish biogas; biogas policies; policies as tools; Anaerobic digestion; waste treatment;

   Abstract : Swedish state has been promoting alternative renewable fuels like biogas to reduce the dependency on fossil fuels and to curb related greenhouse gas emissions. Owing to many policies like subsidies and tax exemptions for using biogas, the country has seen a surge in demand for biogas. READ MORE

4. 23. Small-scale biogas production from organic waste and application in mid-income countries – a case study of a Lebanese community

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Sebastian Huber; [2019]
   Keywords : Sustainable Development; Lebanon; small-scale; biogas production; organic waste; liquid digestate; anaerobic digestion; feasibility study;

   Abstract : The controlled anaerobic digestion of organic waste in a biogas facility aggregates advantages of waste treatment, energy recovery and nutrient recycling and is a promising technology to deal with contemporary issues of waste management and energy recovery. Small-scale biogas production units can be simply designed and successfully operated even in settings where means for advanced technology equipment are low and institutional capacities limited. READ MORE

5. 24. Analysis of the distribution of plant nutrients in a biogas production system : a look at VH Biogas, co-digesting manure from several farms

   University essay from SLU/Dept. of Soil and Environment

   Author : André Johansson; [2019]
   Keywords : biogas; digestate; manure; nutrients;

   Abstract : This study examined nutrient flows in a system where 20 farms deliver manure to a biogas plant for digestion, and then receive digestate back. Some other substrates were also anaerobically digested at the plant e.g. slaughter residues. READ MORE

6. 25. Anaerobic degradation of volatile fatty acids in continuous biogas reactors at very short hydraulic retention times.

   University essay from Lunds universitet/Teknisk mikrobiologi; Lunds universitet/Bioteknik

   Author : Anna Lea Auguste Weimer; [2019]
   Keywords : Anaerobic digestion; hydraulic retention time; organic loading rate; biogas; applied microbiology; teknisk mikrobiologi; Technology and Engineering;

   Abstract : There is an increasing demand for safe, affordable and above allsustainable energy, due to the exhaustion of fossil fuels and increasing greenhousegas emissions. In this context, anaerobic digestion is of growing interest, as it enablesthe production of the versatile renewable energy source biogas from various types oforganic wastes. READ MORE