Essays about: "digestate"

Showing result 1 - 5 of 37 essays containing the word digestate.

  1. 1. 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

  2. 2. 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

  3. 3. 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

  4. 4. Multi-criteria assessment of biomethane production from waste and residual feedstocks of Emilia-Romagna (Italy)

    University essay from SLU/Dept. of Energy and Technology

    Author : Giovanni Zanaroli; [2019]
    Keywords : biomethane; nutrients recycling; anaerobic digestion; multi-criteria assessment; transport;

    Abstract : Biomethane can be produced by anaerobic digestion of residues or wastes and it can be used as a renewable fuel for transport. It is associated with reduced GHG emissions, offsetting of fossil fuels and of mineral fertilizers, waste management and nutrient recycling in agriculture. READ MORE

  5. 5. Long-term application of digestate and biofuel ash to arable soil : effects on the solubility of Cd, Al and trace metals as evidenced by simulated scenarios

    University essay from SLU/Dept. of Soil and Environment

    Author : Elias Bäckström; [2018]
    Keywords : cadmium; fertilizer; Visual MINTEQ;

    Abstract : The importance of nutrient recycling could not be emphasized enough in to-day’s society. Reduction of waste as well as recycling of nutrients would be the result if ash and biogas digestate could be used as fertilizer. However, the solubility of Cd, Al and micronutrients might be affected in a different way than by standard fertilizers. READ MORE