Essays about: "biogas"

Showing result 1 - 5 of 365 essays containing the word biogas.

  1. 1. Using Blue Mussels as a Tool for Mitigating Eutrophication in the Baltic Sea

    University essay from Linköpings universitet/Industriell miljöteknik; Linköpings universitet/Industriell miljöteknik

    Author : Johanna Ståhle; Linnea Henriksson; [2018]
    Keywords : Life cycle analysis LCA ; recycling of nutrients; blue mussels; mussel farm; mussel meal; biogas; compost;

    Abstract : Eutrophication is a consequence of excess nutrients in the water which leads to increased algaegrowth, reduced water transparency and hypoxic bottoms. This is the biggest environmental problemfor the Baltic Sea which recently has resulted in stricter legislations and other initiatives to help theBaltic Sea to recover. READ MORE

  2. 2. 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

  3. 3. Energy Supply & Optimization of New Tannery in Bangladesh

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik; Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Gabriel Åkerling; Carl Ekberg; [2018]
    Keywords : Tannery Energy Optimization Cooling Drying Supply Digester Biogas; Garveri Energi Optimering Kylning Torkning Rötning Biogas;

    Abstract : Böle Garveri is a tannery located outside Piteå with a long history of leather production. They are planning a new tannery in Bangladesh as a step in their ongoing expansion of their business. The leather industry in Bangladesh is currently chemically heavy and in many cases highly toxic to the environment. READ MORE

  4. 4. Arbuscular mycorrhizal fungi in spring wheat : impact of waste-based fertilizers

    University essay from SLU/Dept. of Soil and Environment

    Author : Julia Dahlqvist; [2018]
    Keywords : digestate; ash; Cd; cadmium; circular economy; phosphorus; Glomeromycota; quantitative polymerase chain reaction; qPCR; microscope; field; pH; Quarna;

    Abstract : Phosphate rock is a diminishing source of phosphorus (P) for crop production. Other sources are being investigated to replace it, for example bio-ash from wood combustion and biogas digestate from house hold wastes. Ash and digestate application have resulted in increased yields, but the effect on the soil biota has been somewhat varied. READ MORE

  5. 5. The effect of thermal pre-treatment and waste paper addition to biomethane potential of macroalgae Saccharina latissima

    University essay from Linnéuniversitetet/Institutionen för byggd miljö och energiteknik (BET)

    Author : Gadis Tandiyoputri; [2018]
    Keywords : Biomethane potential; Macroalgae; Saccharina latissima; mechanical pre-treatment; thermal pre-treatment;

    Abstract : As a steady renewable energy technology, biogas is a viable alternative to reduce our dependency to fossil fuels and to prevent severe climate change. Biogas potential can be improved through combining different types of substrate and inoculum, as well as through substrate pre-treatments. READ MORE